Abderrahim yassar

Abderrahim yassar

École Polytechnique

H-index: 48

Europe-France

About Abderrahim yassar

Abderrahim yassar, With an exceptional h-index of 48 and a recent h-index of 19 (since 2020), a distinguished researcher at École Polytechnique, specializes in the field of organic electronics.

His recent articles reflect a diverse array of research interests and contributions to the field:

Theoretical and Experimental Study of Different Side Chains on 3, 4-Ethylenedioxythiophene and Diketopyrrolopyrrole-Derived Polymers: Towards Organic Transistors

Incorporation of Diketopyrrolopyrrole into Polythiophene for the Preparation of Organic Polymer Transistors

Solution-Processed Functionalized Graphene Film Prepared by Vacuum Filtration for Flexible NO2 Sensors

π-Conjugated Polymer Nanoparticles from Design, Synthesis to Biomedical Applications: Sensing, Imaging, and Therapy

Preparation of Dye Semiconductors via Coupling Polymerization Catalyzed by Two Catalysts and Application to Transistor

Shear-aligned large-area organic semiconductor crystals through extended π–π interaction

Investigating the Effect of Cross-Conjugation Patterns on the Optoelectronic Properties of 7, 7′ Isoindigo-Based Materials

Synthetic approaches to p-conjugated diradicaloid materials for transistors

Abderrahim yassar Information

University

École Polytechnique

Position

___

Citations(all)

11250

Citations(since 2020)

1185

Cited By

10475

hIndex(all)

48

hIndex(since 2020)

19

i10Index(all)

113

i10Index(since 2020)

32

Email

University Profile Page

École Polytechnique

Abderrahim yassar Skills & Research Interests

organic electronics

Top articles of Abderrahim yassar

Theoretical and Experimental Study of Different Side Chains on 3, 4-Ethylenedioxythiophene and Diketopyrrolopyrrole-Derived Polymers: Towards Organic Transistors

Authors

Shiwei Ren,Wenqing Zhang,Jinyang Chen,Abderrahim Yassar

Journal

International Journal of Molecular Sciences

Published Date

2024/1/16

In this research, two polymers of P1 and P2 based on monomers consisting of thiophene, 3,4-Ethylenedioxythiophene (EDOT) and diketopyrrolopyrrole (DPP) are designed and obtained via Stille coupling polycondensation. The material shows excellent coplanarity and structural regularity due to the fine planarity of DPP itself and the weak non-covalent bonding interactions existing between the three units. Two different lengths of non-conjugated side chains are introduced and this has an effect on the intermolecular chain stacking, causing the film absorption to display different characteristic properties. On the other hand, the difference in the side chains does not have a significant effect on the thermal stability and the energy levels of the frontier orbitals of the materials, which is related to the fact that the materials both feature extremely high conjugation lengths and specific molecular compositions. Microscopic investigations targeting the side chains provide a contribution to the further design of organic semiconductor materials that meet device requirements. Tests based on organic transistors show a slight difference in conductivity between the two polymers, with P2 having better hole mobility than P1. This study highlights the importance of the impact of side chains on device performance, especially in the field of organic electronics.

Incorporation of Diketopyrrolopyrrole into Polythiophene for the Preparation of Organic Polymer Transistors

Authors

Shiwei Ren,Zhuoer Wang,Wenqing Zhang,Abderrahim Yassar,Jinyang Chen,Sichun Wang

Journal

Molecules

Published Date

2024/1/3

Polythiophene, as a class of potential electron donor units, is widely used in organic electronics such as transistors. In this work, a novel polymeric material, PDPPTT-FT, was prepared by incorporating the electron acceptor unit into the polythiophene system. The incorporation of the DPP molecule assists in improving the solubility of the material and provides a convenient method for the preparation of field effect transistors via subsequent solution processing. The introduction of fluorine atoms forms a good intramolecular conformational lock, and theoretical calculations show that the structure displays excellent co-planarity and regularity. Grazing incidence wide-angle X-ray (GIWAXS) results indicate that the PDPPTT-FT is highly crystalline, which facilitates carrier migration within and between polymer chains. The hole mobility of this π-conjugated material is as high as 0.30 cm2 V−1 s−1 in organic transistor measurements, demonstrating the great potential of this polymer material in the field of optoelectronics.

Solution-Processed Functionalized Graphene Film Prepared by Vacuum Filtration for Flexible NO2 Sensors

Authors

Mbaye Dieng,Siva Sankar,Pingping Ni,Ileana Florea,Pedro Alpuim,Andrea Capasso,Abderrahim Yassar,Fatima Zahra Bouanis

Journal

Sensors

Published Date

2023/2/7

Large-scale production of graphene nanosheets (GNSs) has led to the availability of solution-processable GNSs on the commercial scale. The controlled vacuum filtration method is a scalable process for the preparation of wafer-scale films of GNSs, which can be used for gas sensing applications. Here, we demonstrate the use of this deposition method to produce functional gas sensors, using a chemiresistor structure from GNS solution-based techniques. The GNS suspension was prepared by liquid-phase exfoliation (LPE) and transferred to a polyvinylidene fluoride (PVDF) membrane. The effect of non-covalent functionalization with Co-porphyrin and Fe-phthalocyanines on the sensor properties was studied. The pristine and functionalized GNS films were characterized using different techniques such as Raman spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM), atomic force microscopy (AFM), X-ray diffraction (XRD), and electrical characterizations. The morphological and spectroscopic analyses both confirm that the molecules (Co-porphyrin and Fe-phthalocyanine) were successfully adsorbed onto the GNSs surface through π-π interactions. The chemiresistive sensor response of functionalized GNSs toward the low concentrations of nitrogen dioxide (NO2) (0.5–2 ppm) was studied and compared with those of the film of pristine GNSs. The tests on the sensing performance clearly showed sensitivity to a low concentration of NO2 (5 ppm). Furthermore, the chemical modification of GNSs significantly improves NO2 sensing performance compared to the pristine GNSs. The sensor response can be …

π-Conjugated Polymer Nanoparticles from Design, Synthesis to Biomedical Applications: Sensing, Imaging, and Therapy

Authors

Nada Elgiddawy,Noha Elnagar,Hafsa Korri-Youssoufi,Abderrahim Yassar

Published Date

2023/8/3

In the past decade, π-conjugated polymer nanoparticles (CPNs) have been considered as promising nanomaterials for biomedical applications, and are widely used as probe materials for bioimaging and drug delivery. Due to their distinctive photophysical and physicochemical characteristics, good compatibility, and ease of functionalization, CPNs are gaining popularity and being used in more and more cutting-edge biomedical sectors. Common synthetic techniques can be used to synthesize CPNs with adjustable particle size and dispersion. More importantly, the recent development of CPNs for sensing and imaging applications has rendered them as a promising device for use in healthcare. This review provides a synopsis of the preparation and functionalization of CPNs and summarizes the recent advancements of CPNs for biomedical applications. In particular, we discuss their major role in bioimaging, therapeutics, fluorescence, and electrochemical sensing. As a conclusion, we highlight the challenges and future perspectives of biomedical applications of CPNs.

Preparation of Dye Semiconductors via Coupling Polymerization Catalyzed by Two Catalysts and Application to Transistor

Authors

Shiwei Ren,Wenqing Zhang,Zhuoer Wang,Abderrahim Yassar,Jinyang Chen,Minfeng Zeng,Zhengran Yi

Journal

Molecules

Published Date

2023/12/22

Organic dye semiconductors have received increasing attention as the next generation of semiconductors, and one of their potential applications is as a core component of organic transistors. In this study, two novel diketopyrrolopyrrole (DPP) dye core-based materials were designed and separately prepared using Stille coupling reactions under different palladium catalyst conditions. The molecular weights and elemental compositions were tested to demonstrate that both catalysts could be used to successfully prepare materials of this structure, with the main differences being the weight-average molecular weight and the dispersion index. PDPP-2Py-2Tz I with a longer conjugation length exhibited better thermodynamic stability than the counterpart polymer PDPP-2Py-2Tz II. The intrinsic optical properties of the polymers were relatively similar, while the electrochemical tests showed small differences in their energy levels. The polymers obtained with different catalysts displayed similar and moderate electron mobility in transistor devices, while PDPP-2Py-2Tz I possessed a higher switching ratio. Our study provides a comparison of such dye materials under different catalytic conditions and also demonstrates the great potential of dye materials for optoelectronic applications.

Shear-aligned large-area organic semiconductor crystals through extended π–π interaction

Authors

Song Zhang,Felix Talnack,Tanguy Jousselin-Oba,Vinayak Bhat,Yilei Wu,Yusheng Lei,Yoko Tomo,Huaxin Gong,Lukas Michalek,Donglai Zhong,Can Wu,Abderrahim Yassar,Stefan Mannsfeld,Chad Risko,Michel Frigoli,Zhenan Bao

Journal

Journal of Materials Chemistry C

Published Date

2023

Small molecule-based organic semiconductors are of broad interest in organic field-effect transistors (OFETs) due to their potential for high crystallinity and electrical performance. The 2D molecule, TIPS-peri-pentacenopentacene (TIPS-PPP), which is the vertical extension of the 1D TIPS-pentacene (TIPS-PEN) molecule, offers a lower bandgap, higher aromaticity, and an enhanced π–π interaction with neighboring molecules in the solid state when compared to TIPS-PEN. However, an in-depth understanding of the relationship between the molecule structure, solid-state molecular packing, and the electronic properties has not been reported due to poor control over the TIPS-PPP crystallite size. In this work, we successfully engineered highly oriented large-area TIPS-PPP crystals through the solution shear coating technique. Compared with narrow ribbon-like TIPS-PEN crystals, TIPS-PPP crystals can grow …

Investigating the Effect of Cross-Conjugation Patterns on the Optoelectronic Properties of 7, 7′ Isoindigo-Based Materials

Authors

Shiwei Ren,Amirhossein Habibi,Yujie Wang,Abderrahim Yassar

Journal

Electronics

Published Date

2023/8/2

Isoindigo (IID) is widely used as a building block for the fabrication of organic semiconductor devices. Understanding the impact of cross-conjugation and linear conjugation on the optoelectronic properties of disubstituted IID is of great importance for the design of improved materials. In this study, phenyl and thienyl groups were substituted at the cross-conjugated 7,7′ position of IID to generate three novel organic semiconductor structures with a donor–acceptor architecture. The optoelectronic properties of this IID derivative were investigated and compared with those of the 6,6′ linearly conjugated IID analogs using UV–Vis spectroscopy and cyclic voltammetry. The experimental results were compared using density functional theory calculations to provide structure–property relationships based on substitution types and attachment sites for IID. The frontier orbital energy levels of the material did not vary dramatically with the position of the substituent, while the type of substituent showed a more significant influence on the HOMO’s energy level and oscillator strength. Phenyl-disubstituted 7,7′ IID (7Ph7′Ph) and thienyl-disubstituted 7,7′ IID (7Th7′Th) materials were used as electron transport layers in perovskite solar cells with a power conversion efficiency of 5.70% and 6.07%, respectively. These observations enhance our understanding of the electronic structure and optoelectronic properties of IID, guiding the design of the next generation of IID-based semiconductors.

Synthetic approaches to p-conjugated diradicaloid materials for transistors

Authors

Abderrahim Yassar

Published Date

2023/10/15

Synthetic approaches to p-conjugated diradicaloid materials for transistors - Archive ouverte HAL Accéder directement au contenu Documentation FR Français (FR) Anglais (EN) Se connecter HAL science ouverte Recherche Loading... Recherche avancée Information de documents Titres Titres Sous-titre Titre de l'ouvrage Titre du volume (Série) Champ de recherche par défaut (multicritères) + texte intégral des PDF Résumé Texte intégral indexé des documents PDF Mots-clés Type de document Sous-type de document Tous les identifiants du document Identifiant HAL du dépôt Langue du document (texte) Pays (Texte) Ville À paraître (true ou false) Ajouter Auteur Auteur (multicritères) Auteur (multicritères) Auteur : Nom complet Auteur : Nom de famille Auteur : Prénom Auteur : Complément de nom, deuxième prénom Auteur : Organisme payeur Auteur : IdHal (chaîne de caractères) Auteur : Fonction Auteur : …

Liquid phase exfoliated MoS2 nanosheets for NO2 sensing

Authors

Abderrahim Yassar,Pingping Ni

Published Date

2023/5/11

Liquid phase exfoliated MoS2 nanosheets for NO2 sensing - Archive ouverte HAL Accéder directement au contenu Documentation FR Français (FR) Anglais (EN) Se connecter HAL science ouverte Recherche Loading... Recherche avancée Information de documents Titres Titres Sous-titre Titre de l'ouvrage Titre du volume (Série) Champ de recherche par défaut (multicritères) + texte intégral des PDF Résumé Texte intégral indexé des documents PDF Mots-clés Type de document Sous-type de document Tous les identifiants du document Identifiant HAL du dépôt Langue du document (texte) Pays (Texte) Ville À paraître (true ou false) Ajouter Auteur Auteur (multicritères) Auteur (multicritères) Auteur : Nom complet Auteur : Nom de famille Auteur : Prénom Auteur : Complément de nom, deuxième prénom Auteur : Organisme payeur Auteur : IdHal (chaîne de caractères) Auteur : Fonction Auteur : personID (entier) Auteur …

Tuning the Photophysical Properties of Acceptor–Donor–Acceptor Di-2-(2-oxindolin-3-ylidene) Malononitrile Materials via Extended π–Conjugation: A Joint Experimental and …

Authors

Shiwei Ren,Amirhossein Habibi,Pingping Ni,Yuexing Zhang,Abderrahim Yassar

Journal

Materials

Published Date

2023/9/26

Many optoelectronic applications require organic semiconductor (OSC) materials with high electron affinity. In this work, a series of novel acceptor–donor–acceptor (A–D–A) materials with low-lying LUMO energy levels were designed and characterized. In this strategy, two acceptor dyes, bis-isatin and di-2-(2-oxindolin-3-ylidene) malononitrile, were connected by various π–bridges (benzene ring, benzo[c][1,2,5]thiadiazole, monothiophene, trithiophene). We varied the length of the π–conjugation of the central core and the linkage position of the acceptor core (4- vs. 6-position of the phenyl ring) to investigate the effect on the optical and electrochemical properties of the materials. We performed density functional theory (DFT) and time-dependent DFT (TD–DFT) studies to gain insight into the dyes’ electronic properties by determining the energy levels. Our findings demonstrate that with increasing acceptor strength and π–conjugation length of the core, the wavelength of the longest absorption maximum as well as their respective extinction coefficients are enhanced, which results in band-gap reduction either by lowering the LUMO and/or raising the HOMO energy level of the molecules. The potential practical utility of these materials as electron-transport materials for perovskite solar cells (PSCs) has been demonstrated.

Synthesis and characterization of solution-processed indophenine derivatives for function as a hole transport layer for perovskite solar cells

Authors

Sureshraju Vegiraju,Cheng-Ming Hsieh,Deng-Yi Huang,Yen-Chia Chen,Pragya Priyanka,Jen-Shyang Ni,Firdausy Amalina Esya,Choongik Kim,Shueh Lin Yau,Chih-Ping Chen,Cheng-Liang Liu,Ming-Chou Chen

Journal

Dyes and Pigments

Published Date

2016/10/1

A series of new acceptor-donor-acceptor type conjugated small molecules with alkylated tetrathienoacene as donor and diketopyrrolopyrrole as acceptor moieties has been synthesized and characterized for solution-processed organic thin film transistor and organic photovoltaic applications. To investigate the effect of elongated conjugation on this system, thiophene and bithiophene units were systematically incorporated between the central core and end capped unit. In addition, the effect of alkyl chain substitution on diketopyrrolopyrrole was also examined. The thermal, optical, and electrochemical properties of these new molecules were investigated. The highest hole mobility of organic thin film transistor devices utilizing the solution sheared thin films of these compounds as an active layer is 1.0 × 10−1 cm2 V−1 s−1. Whereas organic photovoltaic cells based on these new molecules exhibited the power …

Liquid Shear Exfoliation of MoS2: Preparation, Characterization, and NO2-Sensing Properties

Authors

Pingping Ni,Mbaye Dieng,Jean-Charles Vanel,Ileana Florea,Fatima Zahra Bouanis,Abderrahim Yassar

Journal

Nanomaterials

Published Date

2023/9/5

2D materials possess great potential to serve as gas-sensing materials due to their large, specific surface areas and strong surface activities. Among this family, transition metal chalcogenide materials exhibit different properties and are promising candidates for a wide range of applications, including sensors, photodetectors, energy conversion, and energy storage. Herein, a high-shear mixing method has been used to produce multilayered MoS2 nanosheet dispersions. MoS2 thin films were manufactured by vacuum-assisted filtration. The structural morphology of MoS2 was studied using ς-potential, UV–visible, scanning electron microscopy (SEM), atomic force microscopy (AFM), energy-dispersive X-ray spectroscopy (EDX), transmission electron microscopy (TEM), X-ray diffraction (XRD), and Raman spectroscopy (RS). The spectroscopic and microscopic analyses confirm the formation of a high-crystalline MoS2 thin film with good inter-sheet connectivity and relative thickness uniformity. The thickness of the MoS2 layer is measured to be approximately 250 nm, with a nanosheet size of 120 nm ± 40 nm and a number of layers between 6 and 9 layers. Moreover, the electrical characteristics clearly showed that the MoS2 thin film exhibits good conductivity and a linear I–V curve response, indicating good ohmic contact between the MoS2 film and the electrodes. As an example of applicability, we fabricated chemiresistive sensor devices with a MoS2 film as a sensing layer. The performance of the MoS2-chemiresistive sensor for NO2 was assessed by being exposed to different concentrations of NO2 (1 ppm to 10 ppm). This sensor shows a …

Recent Research Progress in Indophenine-Based-Functional Materials: Design, Synthesis, and Optoelectronic Applications

Authors

Shiwei Ren,Abderrahim Yassar

Published Date

2023/3/20

This review highlights selected examples, published in the last three to four years, of recent advance in the design, synthesis, properties, and device performance of quinoidal π-conjugated materials. A particular emphasis is placed on emerging materials, such as indophenine dyes that have the potential to enable high-performance devices. We specifically discuss the recent advances and design guidelines of π-conjugated quinoidal molecules from a chemical standpoint. To the best of the authors’ knowledge, this review is the first compilation of literature on indophenine-based semiconducting materials covering their scope, limitations, and applications. In the first section, we briefly introduce some of the organic electronic devices that are the basic building blocks for certain applications involving organic semiconductors (OSCs). We introduce the definition of key performance parameters of three organic devices: organic field effect transistors (OFET), organic photovoltaics (OPV), and organic thermoelectric generators (TE). In section two, we review recent progress towards the synthesis of quinoidal semiconducting materials. Our focus will be on indophenine family that has never been reviewed. We discuss the relationship between structural properties and energy levels in this family of molecules. The last section reports the effect of structural modifications on the performance of devices: OFET, OPV and TE. In this review, we provide a general insight into the association between the molecular structure and electronic properties in quinoidal materials, encompassing both small molecules and polymers. We also believe that this review offers …

Synergistic Use of All-Acceptor Strategies for the Preparation of an Organic Semiconductor and the Realization of High Electron Transport Properties in Organic Field-Effect …

Authors

Shiwei Ren,Wenqing Zhang,Zhuoer Wang,Abderrahim Yassar,Zhiting Liao,Zhengran Yi

Journal

Polymers

Published Date

2023/8/13

The development of n-type organic semiconductor materials for transporting electrons as part of logic circuits is equally important to the development of p-type materials for transporting holes. Currently, progress in research on n-type materials is relatively backward, and the number of polymers with high electron mobility is limited. As the core component of the organic field-effect transistor (OFET), the rational design and judicious selection of the structure of organic semiconductor materials are crucial to enhance the performance of devices. A novel conjugated copolymer with an all-acceptor structure was synthesized based on an effective chemical structure modification and design strategy. PDPPTT-2Tz was obtained by the Stille coupling of the DPPTT monomer with 2Tz-SnMe3, which features high molecular weight and thermal stability. The low-lying lowest unoccupied molecular orbital (LUMO) energy level of the copolymer was attributed to the introduction of electron-deficient bithiazole. DFT calculations revealed that this material is highly planar. The effect of modulation from a donor–acceptor to acceptor–acceptor structure on the improvement of electron mobility was significant, which showed a maximum value of 1.29 cm2 V−1 s−1 and an average value of 0.81 cm2 V−1 s−1 for electron mobility in BGBC-based OFET devices. Our results demonstrate that DPP-based polymers can be used not only as excellent p-type materials but also as promising n-type materials.

Synthesis, Aromaticity, and Application of peri‐Pentacenopentacene: Localized Representation of Benzenoid Aromatic Compounds

Authors

Tanguy Jousselin‐Oba,Masashi Mamada,Karen Wright,Jérome Marrot,Chihaya Adachi,Abderrahim Yassar,Michel Frigoli

Journal

Angewandte Chemie International Edition

Published Date

2022/1/3

We report the synthesis and optoelectronic properties of TIPS‐peri‐pentacenopentacene (TIPS‐PPP), a vertical extension of TIPS‐pentacene (TIPS‐PEN) and a low‐band‐gap material with remarkable stability. We found the synthetic conditions to avoid the competition between 1,2‐ and 1,4‐addition of lithium acetylide on the large aromatic dione. The high stability of TIPS‐PPP is due to the peri‐fusion which increases the aromaticity by generating two localized aromatic sextets that are flanked with 2 diene fragments, similar to two fused‐anthracenes. Like TIPS‐PEN, TIPS‐PPP shows the archetypal 2D brickwall motif in crystals with a larger transfer integral and smaller reorganization energy. The high mobility of up to 1 cm2 V−1 s−1 was obtained in an organic field‐effect transistor fabricated by a wet process. Also, TIPS‐PPP was used as a near‐infrared (NIR) emitter for NIR organic‐light‐emitting‐diode …

Synthesis, crystal structure, tropicity and charge transport properties of diindenothienothiophene derivatives

Authors

Tanguy Jousselin-Oba,Masashi Mamada,Karen Wright,Jérôme Marrot,Chihaya Adachi,Abderrahim Yassar,Michel Frigoli

Journal

Journal of Materials Chemistry C

Published Date

2022

A set of π-conjugated diindenothienothiophene derivatives (DITTs) which formally possess an extended as-indacene core with 16 π-electrons has been synthesised and their closed-shell configuration has been confirmed by X-ray structure analysis. Bond lengths analysis provides insight into the peculiar bond lengths observed for diindenoacene diradicaloids. The annellation mode at the outer rings has a great impact on the tropicity, optoelectrochemical properties and molecular packing. The featured molecules exhibit low energy band gap with values up to 1.30 eV and have high electron affinities with LUMO energies up to 3.86 eV. Their optical properties are similar to those of benzo-fused indeno[2,1-c]fluorene (BIFs) counterparts possessing formally the as-indacene core. Analysis of the molecule tropicity using NICS and ACID plot shows that the central rings of DITTs are weakly antiaromatic and should be …

(Invited, Digital Presentation) Synthesis, Aromaticity and Application to OFET and OLED of Peri-Pentacenopentacene

Authors

Masashi Mamada,Tanguy Jousselin-Oba,Karen Wright,Jérome Marrot,Chihaya Adachi,Abderrahim Yassar,Michel Frigoli

Journal

Electrochemical Society Meeting Abstracts 241

Published Date

2022/7/7

Recently, there has been increasing interest in a class of polycyclic aromatic hydrocarbons (PAHs) with peri-extension of acenes. These peri-fused systems, referred to as peri-acenes and acenoacenes, are considered to be nanographenes.[1–3] Thus, the compounds based on tetracene and larger acenes show singlet biradical nature at the zigzag edge, offering unique and interesting properties.However, the synthesis schemes for these compounds are generally complicated, which hinder the extensive development of these derivatives and application to organic optoelectronics such as organic field-effect transistors (OFETs) and organic light-emitting diodes (OLEDs). A pentacene derivative with two triisopropylsilylethynyl groups at the central ring (TIPS-PEN) was developed in 2001. It shows good solubility, stability, and semiconducting property, resulting in being one of the most studied organic …

Localized Representation of Benzenoid Compounds/Synthesis and Properties of Peri-PentacenoPentacene

Authors

Michel Frigoli,Tanguy Jousselin-Oba,Masashi Mamada,Karen Wright,Jérome Marrot,Chihaya Adachi,A Yassar

Published Date

2022/7/3

Localized Representation of Benzenoid Compounds / Synthesis and Properties of Peri-PentacenoPentacene - Archive ouverte HAL Accéder directement au contenu Documentation FR Français (FR) Anglais (EN) Se connecter HAL science ouverte Recherche Loading... Recherche avancée Information de documents Titres Titres Sous-titre Titre de l'ouvrage Titre du volume (Série) Champ de recherche par défaut (multicritères) + texte intégral des PDF Résumé Texte intégral indexé des documents PDF Mots-clés Type de document Sous-type de document Tous les identifiants du document Identifiant HAL du dépôt Langue du document (texte) Pays (Texte) Ville À paraître (true ou false) Ajouter Auteur Auteur (multicritères) Auteur (multicritères) Auteur : Nom complet Auteur : Nom de famille Auteur : Prénom Auteur : Complément de nom, deuxième prénom Auteur : Organisme payeur Auteur : IdHal (chaîne de caractères) …

Wet-chemical noncovalent functionalization of CVD graphene: molecular doping and its effect on electrolyte-gated graphene field-effect transistor characteristics

Authors

Mbaye Dieng,Mohamed Bensifia,Jérôme Borme,Ileana Florea,Catarina M Abreu,Charafeddine Jama,Céline Léonard,Pedro Alpuim,Didier Pribat,Abderrahim Yassar,Fatima Z Bouanis

Journal

The Journal of Physical Chemistry C

Published Date

2022/2/28

Graphene sheets (mono- and multilayers) were synthesized by chemical vapor deposition and functionalized with various aromatic molecules such as Fe-/Co-porphyrin and Fe-phthalocyanine through π–π interactions. The resulting nanohybrid materials were characterized by Raman spectroscopy (RS), X-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM), scanning electron microscopy (SEM), and scanning transmission electron microscopy (STEM) techniques. The presence of physi-adsorbed molecules (Fe-/Co-porphyrin and Fe-phthalocyanine) on the graphene sheet surface is evidenced by spectroscopic and microscopic analyses, which confirm that these molecules are immobilized through electrostatic and π–π interactions. RS confirmed the n- or p-type doping of graphene, according to the chemical nature of those physi-adsorbed molecules. The electrical characteristics of electrolyte …

p-conjugated materials for electronic and optoelectronic applications

Authors

Abderrahim Yassar

Published Date

2021/11/15

p-conjugated materials for electronic and optoelectronic applications - Archive ouverte HAL Accéder directement au contenu Documentation FR Français (FR) Anglais (EN) Se connecter HAL science ouverte Recherche Loading... Recherche avancée Information de documents Titres Titres Sous-titre Titre de l'ouvrage Titre du volume (Série) Champ de recherche par défaut (multicritères) + texte intégral des PDF Résumé Texte intégral indexé des documents PDF Mots-clés Type de document Sous-type de document Tous les identifiants du document Identifiant HAL du dépôt Langue du document (texte) Pays (Texte) Ville À paraître (true ou false) Ajouter Auteur Auteur (multicritères) Auteur (multicritères) Auteur : Nom complet Auteur : Nom de famille Auteur : Prénom Auteur : Complément de nom, deuxième prénom Auteur : Organisme payeur Auteur : IdHal (chaîne de caractères) Auteur : Fonction Auteur : personID (…

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Abderrahim yassar FAQs

What is Abderrahim yassar's h-index at École Polytechnique?

The h-index of Abderrahim yassar has been 19 since 2020 and 48 in total.

What are Abderrahim yassar's top articles?

The articles with the titles of

Theoretical and Experimental Study of Different Side Chains on 3, 4-Ethylenedioxythiophene and Diketopyrrolopyrrole-Derived Polymers: Towards Organic Transistors

Incorporation of Diketopyrrolopyrrole into Polythiophene for the Preparation of Organic Polymer Transistors

Solution-Processed Functionalized Graphene Film Prepared by Vacuum Filtration for Flexible NO2 Sensors

π-Conjugated Polymer Nanoparticles from Design, Synthesis to Biomedical Applications: Sensing, Imaging, and Therapy

Preparation of Dye Semiconductors via Coupling Polymerization Catalyzed by Two Catalysts and Application to Transistor

Shear-aligned large-area organic semiconductor crystals through extended π–π interaction

Investigating the Effect of Cross-Conjugation Patterns on the Optoelectronic Properties of 7, 7′ Isoindigo-Based Materials

Synthetic approaches to p-conjugated diradicaloid materials for transistors

...

are the top articles of Abderrahim yassar at École Polytechnique.

What are Abderrahim yassar's research interests?

The research interests of Abderrahim yassar are: organic electronics

What is Abderrahim yassar's total number of citations?

Abderrahim yassar has 11,250 citations in total.

What are the co-authors of Abderrahim yassar?

The co-authors of Abderrahim yassar are Léger Jean-Michel, Tondelier Denis, yvan bonnassieux, Raimondo Luisa, Christoforos Gravalidis.

Co-Authors

H-index: 80
Léger Jean-Michel

Léger Jean-Michel

Université de Poitiers

H-index: 37
Tondelier Denis

Tondelier Denis

École Polytechnique

H-index: 31
yvan bonnassieux

yvan bonnassieux

École Polytechnique

H-index: 21
Raimondo Luisa

Raimondo Luisa

Università degli Studi di Milano-Bicocca

H-index: 17
Christoforos Gravalidis

Christoforos Gravalidis

Aristotle University of Thessaloniki

academic-engine