Quinoidal oligothiophenes: new properties behind an unconventional electronic structure

J Casado, RP Ortiz, JTL Navarrete - Chemical Society Reviews, 2012 - pubs.rsc.org
The main chemical, spectroscopic and material research done in tetracyano quinoidal
oligothiophenes in the last 30 years has been reviewed. Their use as semiconducting …

Oligothiophene-based photovoltaic materials for organic solar cells: Rise, plateau, and revival

T Duan, Q Chen, D Hu, J Lv, D Yu, G Li, S Lu - Trends in Chemistry, 2022 - cell.com
Oligothiophene derivatives have been positioned as one of the most promising donor
materials in cost-effectiveness and large-scale production of organic solar cells (OSCs) …

Efficient Vacuum‐Deposited Organic Solar Cells Based on a New Low‐Bandgap Oligothiophene and Fullerene C60

K Schulze, C Uhrich, R Schüppel, K Leo… - Advanced …, 2006 - Wiley Online Library
Organic solar cells based on a new oligothiophene derivative (see figure) and fullerene C
60 exhibit power efficiencies of up to 3.4%. α, α′‐Bis (2, 2‐dicyanovinyl)‐quinquethiophene …

Quinoidal/aromatic transformations in π‐conjugated oligomers: vibrational Raman studies on the limits of rupture for π‐bonds

PM Burrezo, JL Zafra… - Angewandte Chemie …, 2017 - Wiley Online Library
The vibrational Raman spectra of several series of aromatic and quinoidal compounds have
been analyzed considering the downshifts and upshifts of the frequencies of the relevant …

Redox mediator: a new strategy in designing cathode for prompting redox process of Li–S batteries

X Wu, N Liu, B Guan, Y Qiu, M Wang… - Advanced …, 2019 - Wiley Online Library
The multistep redox reactions of lithium–sulfur batteries involve undesirably complex
transformation between sulfur and Li2S, and it is tough to spontaneously fragmentate …

Quinoidal molecules as a new class of ambipolar semiconductor originating from amphoteric redox behavior

H Hwang, D Khim, JM Yun, E Jung… - Advanced Functional …, 2015 - Wiley Online Library
The two small molecules, quinoidal bithiophene (QBT) and quinoidal biselenophene (QBS),
are designed based on a quinoid structure, and synthesized via a facile synthetic route …

Complexes of Functionalized Dipyrido[3,2-a:2',3'-c]-phenazine:  A Synthetic, Spectroscopic, Structural, and Density Functional Theory Study

NJ Lundin, PJ Walsh, SL Howell, JJ McGarvey… - Inorganic …, 2005 - ACS Publications
The ligands 11-bromodipyrido [3, 2-a: 2 ', 3 '-c] phenazine and ethyl dipyrido [3, 2-a: 2 ', 3 '-c]
phenazine-11-carboxylate have been prepared and coordinated to ruthenium (II), rhenium …

Quinoidal Oligothiophenes: Towards Biradical Ground‐State Species

R Ponce Ortiz, J Casado… - … A European Journal, 2010 - Wiley Online Library
A family of quinoidal oligothiophenes, from the dimer to the hexamer, with fused bis
(butoxymethyl) cyclopentane groups has been extensively investigated by means of …

Antiaromatic bisindeno-[n] thienoacenes with small singlet biradical characters: syntheses, structures and chain length dependent physical properties

X Shi, PM Burrezo, S Lee, W Zhang, B Zheng… - Chemical …, 2014 - pubs.rsc.org
Recent studies demonstrated that aromaticity and biradical character play important roles in
determining the ground-state structures and physical properties of quinoidal polycyclic …

Multiple reduction of 2, 5-bis (borolyl) thiophene: isolation of a negative bipolaron by comproportionation.

H Braunschweig, V Dyakonov… - Angewandte …, 2013 - search.ebscohost.com
Abstract The 2, 5‐bis (borolyl) thiophene 2, a conjugated acceptor–π–acceptor system, can
be reduced to the monoradical anion [2].−, the dianion [2] 2−, and the tetraanion [2] 4−. The …