Exploring the Optoelectronic Properties of D-A and A-D-A 2,2'-bi[3,2- b ]thienothiophene Derivatives

The synthesis of some novel donor-acceptor and acceptor-donor-acceptor systems containing a 2,2'-bi[3,2- ]thienothiophene donor block and various electron-accepting units is described alongside their photophysical properties studied using electrochemistry, optical spectroscopy and theoretical c...

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Published in:Molecules (Basel, Switzerland) Switzerland), 2022-12, Vol.27 (23), p.8463
Main Authors: Gabrian, Levi, Giurgi, Gavril-Ionel, Stroia, Ioan, Bogdan, Elena, Crişan, Andreea Petronela, Hădade, Niculina Daniela, Grosu, Ion, Terec, Anamaria
Format: Article
Language:English
Subjects:
Aldehydes
Analysis
Computer software industry
DFT calculations
Electrochemical reactions
Electrochemistry
electron-acceptor groups
Electrons
Energy levels
fluorescence
Investigations
Optical properties
Optoelectronics
Optoelectronics industry
Spectroscopy
thienothiophene
Thin films
π-conjugated systems
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cited_by cdi_FETCH-LOGICAL-c499t-7a318663985a8096b9a9f5e252e230e4904724ee9ea3c3e84f7bbea2ec8e639e3
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description The synthesis of some novel donor-acceptor and acceptor-donor-acceptor systems containing a 2,2'-bi[3,2- ]thienothiophene donor block and various electron-accepting units is described alongside their photophysical properties studied using electrochemistry, optical spectroscopy and theoretical calculations. The obtained results show that the energy levels can be modulated by changing the strength of the acceptor unit. Among the three investigated end-groups, 1,1-dicyanomethylene-3-indanone exhibited the largest bathochromic shift and the lowest band gap suggesting the strongest electron-withdrawing character. Moreover, the emissive properties of the investigated systems vary greatly with the nature of the terminal group and are generally lower compared to their precursor aldehyde derivatives.
doi_str_mv 10.3390/molecules27238463
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subjects Aldehydes
Analysis
Computer software industry
DFT calculations
Electrochemical reactions
Electrochemistry
electron-acceptor groups
Electrons
Energy levels
fluorescence
Investigations
Optical properties
Optoelectronics
Optoelectronics industry
Spectroscopy
thienothiophene
Thin films
π-conjugated systems
title Exploring the Optoelectronic Properties of D-A and A-D-A 2,2'-bi[3,2- b ]thienothiophene Derivatives
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