%0 Journal Article
%T Poly(tetrasubstituted-aryl imidazole)s: A Way to Obtain Multi-Chromophore Materials with a Tunable Absorption/Emission Wavelength
%+ Laboratoire Charles Coulomb (L2C)
%+ Genèse et Usage d'Interfaces Durables pour l'Energie (GUIDE)
%+ Ingénierie des Matériaux Polymères (IMP)
%A Chauveau, Edouard
%A Perrin, Lara
%A Marestin, C.
%A Mercier, Régis
%< avec comité de lecture
%@ 2227-9717
%J Processes
%I MDPI
%V 11
%N 10
%P 2959
%8 2023-10-12
%D 2023
%R 10.3390/pr11102959
%K imidazole
%K benzothiadiazole
%K diketopyrrolopyrrole
%K fluorescent polymers
%K transfer photoluminescence
%Z Chemical Sciences/Material chemistryJournal articles
%X Some original poly(tetrasubstituted imidazole)s incorporating different units were synthesized and characterized. These materials were obtained via a cascade polycondensation process assisted by microwave irradiation that was developed by our team. This time, we integrated two well-known chromophore structures into the macromolecular backbone, which were benzothiadiazole (BTD) and diketopyrrolopyrrole (DKPP). These new polymers were fully characterized: their chemical structures were confirmed using NMR spectroscopy and their thermal, optical and electrochemical properties were investigated and compared with a reference polymer containing a phenyl spacer instead of the mentioned chromophore units. These materials were found to exhibit a large Stokes shift of up to 350 nm. Furthermore, a polymer presenting large absorption on the UV–visible range and an emission close to the near-infrared region was obtained by coupling the mentioned moieties. According to the established properties of this latter polymer, it presents a potential for applications in biological imaging or optoelectronic devices.
%G English
%2 https://hal.science/hal-04240166/document
%2 https://hal.science/hal-04240166/file/processes-11-02959.pdf
%L hal-04240166
%U https://hal.science/hal-04240166
%~ UNIV-ST-ETIENNE
%~ UNIV-SAVOIE
%~ UGA
%~ CNRS
%~ UNIV-LYON1
%~ INSA-LYON
%~ INPG
%~ IMP
%~ L2C
%~ LEPMI
%~ INC-CNRS
%~ UNIV-MONTPELLIER
%~ INSA-GROUPE
%~ UDL
%~ UNIV-LYON
%~ UGA-EPE
%~ INES
%~ UM-2015-2021
%~ UM-EPE