The impact of thienothiophene isomeric structures on the optoelectronic properties and photovoltaic performance in quinoxaline based donor–acceptor copolymers

Abstract

The importance of the monomer's isomeric structure in the design of new D–A copolymers for various applications.

New conjugated polymer nanoparticles with high photoluminescence quantum yields for far-red and near infrared fluorescence bioimaging

“…The syntheses of 5,8-dibromo-2,3-bis(3-(octyloxy)phenyl)quinoxaline,5,8-dibromo-6-fluoro-2,3-bis(3-(octyloxy)phenyl)quinoxaline, 5,8-dibromo-6,7-difluoro-2,3-bis(3-(octyloxy)phenyl)quinoxaline and bis(trimethylstannyl)thiophene were performed according to already published procedures. [41][42][43] (3,4-Difluorothiophene-2,5-diyl)bis(trimethylstannane) 44 was purchased from Derthon Optoelectronic Materials Science Technology Co., Ltd and poly(ethylene glycol)methyl ether-poly(lactide-co-glycolide) (mPLGA-b-PEG) [average molecular weight per number of PLGA is % M nPLGA = 7000 g mol À1 , and that of PEG is % M nPEG = 5000 g mol À1 ] was purchased from Sigma Aldrich.…”

Impact of intentional photo-oxidation of a donor polymer and PC70BM on solar cell performance

“…5a shows the UV-vis absorption spectrum of TQ1 polymer films, exhibiting two characteristic absorption bands around 350 nm and 620 nm. 31,45 The pure TQ1 films photobleach rapidly under simulated sunlight in ambient air, which is seen by the decrease in intensity of both absorption bands. 27,46 However, in Fig.…”

Regioisomers of Organic Semiconducting Dumbbell‐Shaped Molecules: Synthesis and Structure‐Properties Relationship

“…Finally, very few examples have been reported studying the influence of the different isomeric structures on the solid-state structures and optoelectronic properties of more or less fused extended conjugated molecules. [11][12][13] One can cite the recent work reported by Jia et al that describes the Chaima Mahmoudi received her M.S degree in organic chemistry (2017) from the Faculty of sciences of Monastir (Tunisia). She is now pursuing her PhD in the University of Monastir under the supervision of Prof. Mustapha Majdoub.…”

“…In both cases, the solid‐state structures and optoelectronic properties are significantly changed from one isomer to the other, resulting in substantially different device performance. Finally, very few examples have been reported studying the influence of the different isomeric structures on the solid‐state structures and optoelectronic properties of more or less fused extended conjugated molecules [11–13] . One can cite the recent work reported by Jia et al .…”