Gilles H. Roche

ORCID: 0000-0003-2392-0347
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About
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Research Areas
  • X-ray Diffraction in Crystallography
  • Crystallization and Solubility Studies
  • Organic Electronics and Photovoltaics
  • Crystallography and molecular interactions
  • Conducting polymers and applications
  • Molecular Junctions and Nanostructures
  • Perovskite Materials and Applications
  • High-pressure geophysics and materials
  • Organic Light-Emitting Diodes Research
  • Thermal Expansion and Ionic Conductivity
  • Semiconductor Lasers and Optical Devices
  • Photonic and Optical Devices
  • Nonlinear Optical Materials Research
  • Virology and Viral Diseases
  • Biochemical and Molecular Research
  • solar cell performance optimization
  • Hepatitis C virus research
  • Animal Virus Infections Studies
  • Thermal properties of materials
  • Click Chemistry and Applications
  • Photochemistry and Electron Transfer Studies
  • Mesoporous Materials and Catalysis
  • SARS-CoV-2 and COVID-19 Research
  • Ionic liquids properties and applications
  • Tendon Structure and Treatment

Institut Polytechnique de Bordeaux
2018-2024

Laboratoire de l'Intégration du Matériau au Système
2019-2024

Centre National de la Recherche Scientifique
2016-2024

Université de Bordeaux
2018-2024

Institut Charles Gerhardt Montpellier
2016-2022

Institut de Chimie
2017-2022

École Nationale Supérieure de Chimie de Montpellier
2016-2022

Université de Montpellier
2020-2022

Université de Rennes
2011

Genoscience Pharma (France)
2011

Abstract The influence of hydration rat‐tail tendons has been studied by measuring the heat involved in water fixation deplending on degree hydration. modulus and damping dependences have measured when changing temperature for different uptakes. In situ hydrations realized. Evidence several states absorption dervied from both calorimetic dynamic mechanical experiments. A model proposed taking into account energies corresponding to regimes fixation.

10.1002/bip.1978.360171205 article EN Biopolymers 1978-12-01

A dense high-mobility organic semiconductor presents anomalously high negative and positive uniaxial thermal expansion across an isosymmetric phase transition.

10.1039/c8sc00159f article EN cc-by-nc Chemical Science 2018-01-01

[1]Benzothieno[3,2-b]benzothiophene (BTBT) derivatives are widely employed as hole transport materials in organic field-effect transistors. The electronic properties of these depend critically on the crystal packing, which turn depends choice attached functional group. With symmetrically alcohol chains, structure may display different packing modes depending number CH2 groups alkyl chain. dipentanol BTBT derivative has two polymorphs I and II, crystallizing from solvents, with distinct...

10.1021/acs.cgd.1c00177 article EN Crystal Growth & Design 2021-06-11

Accurate structural models for rubrene, the benchmark organic semiconductor, derived from synchrotron X-ray data in temperature range of 100–300 K, show that its cofacially stacked tetracene backbone units remain blocked with respect to each other upon cooling 200 K and start slip below temperature. The release slippage occurs at approximately same as hole mobility crossover. blocking between 300 is caused by a negative correlation relatively small thermal expansion along crystallographic...

10.1021/acs.jpclett.1c03221 article EN The Journal of Physical Chemistry Letters 2022-01-05

Abstract The synthesis and characterization of a series [1]benzothieno[3,2‐ b ][1]benzothiophene (BTBT) molecules disubstituted by hydroxy aliphatic chains in positions 2 7 ( BTBT‐C n OH ), where the intralayer molecular stacking alternates between classical an inverted herringbone mode as function whether alkyl sides have even or odd number carbon atoms are reported. This odd–even effect does not only affect interlayer distance lamellar structures melting points, but also electronic...

10.1002/aelm.202100265 article EN Advanced Electronic Materials 2021-09-27

The use of novel organosilica materials embedding π‐conjugated moieties as semiconductor into field‐effect transistors is demonstrated. chosen core a [1]benzothieno[3,2‐b][1]benzothiophene that modified with hydrolyzable and crosslinkable triethoxysilyl moieties. After polycondensation, this compound forms hybrid material composed charge transport pathways well insulating sublayers made silicon oxide (SiO x ). behaves subsequently integrated active layer transistors. These precursors show...

10.1002/aelm.201700218 article EN Advanced Electronic Materials 2017-07-10

Hole transporting layers (HTL) in polymer solar cells remain a subject of importance to enable enhanced efficiency and stability compared the benchmark PEDOT:PSS. The design an interlayer based on same as one used bulk heterojunction (BHJ) is reported here. In this HTL, doped, thus forming so‐called homojunction. conductivity PTQ10 doped with magic blue optimized for varying dopant concentrations. resulting show competing power conversion widely PEDOT:PSS improved stability. This strategy...

10.1002/solr.202200815 article EN Solar RRL 2022-11-08

Compound 6,6′-([1]benzothieno[3,2- b ][1]benzothiophene-2,7-diyl)bis(butan-1-ol) ( BTBT-C4OH ) displays a continuous type 0 first-order isosymmetric phase transition at 200 K which is accompanied by change of the thermal expansion along axis from positive to negative. The equivalent isotropic atomic displacement parameters for all non-hydrogen atoms as well eigenvalues anisotropic tensor show discontinuous behavior transition. translational in rigid-body description molecule are transition,...

10.1107/s2052520620007702 article EN Acta Crystallographica Section B Structural Science Crystal Engineering and Materials 2020-07-21

Organic photovoltaic (OPV) cells are commonly produced by successive printing of four layers on top a transparent conducting electrode, with the active layer sandwiched in between interlayers followed electrode. Here, simplification OPV manufacturing without need to coat hole transport (HTL) inverted (n–i–p) is reported. To ensure required selectivity, thermally trigged molecules directly blended during device casting. Following thermal annealing complete devices, organosulfur self‐assembled...

10.1002/adpr.202400128 article EN cc-by Advanced Photonics Research 2024-09-24

A series of acceptor-acceptor (A-A’) alternated copolymers based on dithienodiketopyrrolo pyrrole were synthesized by copolymerizing it with itself and other different electron-poor monomers. The experimental computed optoelectronic properties four DPP-based copolymers, P(DPP-DPP) (with linear branched chains), copolymer diazapentalene P(DPP-DAP) also dioxothienopyrrolebenzodifurandione P(DPP-BTPBF), as well thermal characterizations described. UV-visible spectrophotometry cyclic voltammetry...

10.3390/app12094494 article EN cc-by Applied Sciences 2022-04-28

Polymer photovoltaic solar cells based on PTQ10:IT4F were fabricated and characterized with voluntary contamination of several impurities in various amounts. Impurities selected as related to the Stille coupling reagents: particular palladium catalysts their respective ligands. Below a concentration 300 ppm, pristine device efficiencies not significantly affected for any studied compounds. The degradation patterns under accelerated light soaking modified either. For higher amounts (>300...

10.2139/ssrn.4642782 preprint EN 2023-01-01

In this presentation, we thoroughly discuss organic semiconductors and their role in printing technologies to manufacture the next-generation of sustainable optoelectronic devices. Focusing on photodetectors (OPDs), study multidimensional factors affecting device impact environment. Low-temperature processing solution-processed strongly reduce environmental footprint OPDs as compared inorganic photodetectors. That being said, there is still room further improve sustainability by using...

10.1109/iedm45741.2023.10413743 article EN 2022 International Electron Devices Meeting (IEDM) 2023-12-09
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