ORIOU, Jules; NG, Feifei; HADZIIOANNOU, Georges; BROCHON, Cyril; CLOUTET, Eric

doi:10.1002/pola.27660

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ORIOU, Jules
Laboratoire de Chimie des Polymères Organiques [LCPO]
Team 4 LCPO : Polymer Materials for Electronic, Energy, Information and Communication Technologies

NG, Feifei
Laboratoire de Chimie des Polymères Organiques [LCPO]
Team 4 LCPO : Polymer Materials for Electronic, Energy, Information and Communication Technologies

HADZIIOANNOU, Georges

Laboratoire de Chimie des Polymères Organiques [LCPO]
Team 4 LCPO : Polymer Materials for Electronic, Energy, Information and Communication Technologies

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Journal of Polymer Science Part A: Polymer Chemistry. 2015, vol. 53, n° 17, p. 2059-2068

Wiley

Résumé en anglais

A series of four -conjugated carbazole-alt-benzothiadiazole copolymers (PCBT) were prepared by Suzuki cross-coupling reaction between synthesized dibromocarbazoles as electron-rich subunits and 4,7-bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2,1,3-benzothiadiazole as electron-deficient subunits. The subunits were directly linked through 2,7- or 3,6- positions of the carbazole. In addition, the carbazole monomers have been N-substituted by a branched or a linear side-chain. The chemical structure of the copolymers and their precursors was confirmed by NMR and IR spectroscopies, and their molar masses were estimated by SEC. Thermal analysis under N-2 atmosphere showed no weight loss below 329 degrees C, and no glass transition was observed in between 0 and 250 degrees C. The band gaps of all PCBTs evaluated by optical spectroscopies and by cyclic voltammetry analysis were consistent with expectations and ranged between 2.2 and 2.3 eV. Finally, 2,7 and 3,6 linkages were shown to influence optical properties of PCBTs.< Réduire

Mots clés en anglais

POLY(3-ALKYLTHIOPHENES)

OPTICAL-MATERIALS

Carbazole

conjugated polymers

benzothiadiazole-conjugated alternated copolymers

step-growth polymerization

structure-property relation

Suzuki polycondensation

HETEROJUNCTION SOLAR-CELLS

7-CARBAZOLE-BASED CONJUGATED POLYMERS

MAIN-CHAIN POLYMERS

ELECTROLUMINESCENT POLYMERS

PHOTOVOLTAIC CELLS

PERFORMANCE

PROGRESS

DONOR

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Synthesis and structure-property relationship of carbazole-alt-benzothiadiazole copolymers

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