7774-73-4Relevant articles and documents
Highly efficient near-infrared and semitransparent polymer solar cells based on an ultra-narrow bandgap nonfullerene acceptor
Chen, Juan,Li, Guangda,Zhu, Qinglian,Guo, Xia,Fan, Qunping,Ma, Wei,Zhang, Maojie
, p. 3745 - 3751 (2019)
In this work, we design and synthesize an acceptor-donor-acceptor structured non-fullerene acceptor (ACS8) with an ultra-narrow bandgap (1.3 eV). It possesses a well-ordered molecular orientation and π-π stacking, and hence exhibits a high electron mobility of 2.65 × 10-4 cm2 V-1 s-1. Polymer solar cells (PSCs) based on PTB7-Th:ACS8 (1:2, w/w) processed using toluene and 0.5% PN (1-phenylnaphthalene) treatment exhibited an optimal power conversion efficiency (PCE) of 13.2% with an open circuit voltage (Voc) of 0.75 V, a short-circuit current density (Jsc) of 25.3 mA cm-2 and a fill factor (FF) of 69.3% under the illumination of AM 1.5G, 100 mW cm-2. This PCE is among the highest values reported in the literature to date for PSCs based on ultra-narrow bandgap acceptors (Eoptg ≤ 1.3 eV). Furthermore, semitransparent devices based on PTB7-Th:ACS8 exhibit an outstanding PCE up to 11.1% with an average visible transmittance of 28.6%.
Effect of regioregularity and role of heteroatom on the chiral behavior of oligo(heteroalkyl thiophene)s
Marinelli, Martina,Angiolini, Luigi,Lanzi, Massimiliano,Di Maria, Francesca,Salatelli, Elisabetta
supporting information, p. 1361 - 1376 (2020/11/23)
Novel optically active oligothiophenes bearing electron-donating chiral side chains have been prepared by synthetic methods suitable to achieve regioregular head-to-tail and head-to-head/tail-to-tail derivatives. In particular, the chiral (S)-(2-methyl)butyl moiety was linked at position 3 of the thiophene ring through heteroatoms, such as S or O, to evaluate its effect on the macro molecular aggregation and, consequently, on the chiroptical properties of the material in the solid state. The materials have been fully characterized and investigated by optical and chiroptical methods upon aggregation both from the solution and as cast films. Compared with the related head-to-tail and head-to-head/tail-to-tail poly(3-alkyl)thiophene derivatives, with the same optically active moiety directly linked to the ring and possessing a higher polymerization degree, the chiroptical properties of the newly synthesized oligomers were significant, or even better, and provided insight into the role of intrachain–interchain interactions between the heteroatom and the thienyl sulfur atom.
Synthesis of two novel cysteine-functionalized thiophenes
Cagnoli, Rita,Lanzi, Massimiliano,Mucci, Adele,Parenti, Francesca,Schenetti, Luisa
, p. 267 - 271 (2007/10/03)
The synthetic approach to methyl N-(tert-butoxycarbonyl)-S-(3-thienyl)-L- cysteinate (1) and methyl N-(tert-butoxycarbonyl)-S-[2-(3-thienyl)ethyl]-L- cysteinate (2) through tosylate intermediates is reported and discussed. These compounds, which combine the properties of the cysteine side-chain with those of the thiophene ring represent both potential bioactive molecules and interesting synthons for the development of new materials.
