A material comprising an electron-accepting unit of formula (I), wherein Ar1 is a 5- or 6-membered aromatic or heteroaromatic ring or is absent; Ar2 is a 5- or 6-membered aromatic or heteroaromatic ring or is absent; and wherein the electron-accepting unit of formula (I) is substituted with at least one electron-withdrawing group. The material further comprises an electron-donating unit D comprising a fused or unfused furan or thiophene. The material may be a polymer comprising repeat units of formula (I). The material may be a non-polymeric compound. An organic photodetector may contain a bulk heterojunction layer containing an electron acceptor or an electron donor wherein at least one of the electron acceptor and electron donor contains unit of formula (I).
Sharma,K.S. et al., Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1978, vol. 16, p. 892 - 894
作者:Sharma,K.S. et al.
DOI:——
日期:——
SHARMA K. S.; SINGH V.; SINGH R. P., INDIAN J. CHEM., 1978, B 16, 892-894
作者:SHARMA K. S.、 SINGH V.、 SINGH R. P.
DOI:——
日期:——
Blue-Light Photocleavable Protecting Groups Based on Benzothiadiazole Scaffolds
作者:Sean Norris、Caroline C. Warner、Andrea M. Thooft、Selin K. Demirci、Bryan J. Lampkin、Kyle Miner、Arkady Ellern、Brett VanVeller
DOI:10.1021/acs.orglett.9b04268
日期:2020.1.3
An unexpected nucleophilic aromatic substitution lead to a novel benzothiadiazole scaffold that bore the functional group pattern associated with benzyl-type photocleavable protecting groups. The new molecules display efficient photochemical release of leaving groups with blue light. The performance of both ortho- and meta-substituted derivatives was probed through both structural manipulation and computational metrics to improve performance.
Gold-Catalyzed Intermolecular Alkyne Insertion into the N–S Bond in Sulfenamides
Gold-catalyzed reactions between sulfenamides and terminal alkynes proceeded via cis-insertion of alkynes into the N–S bond in sulfenamides, affording the corresponding β-sulfenylenamines in yields up to 90%. Mechanistic studies revealed that the reactions proceeded via nucleophilic attack of the sulfenamide nitrogen atom on the π-activated alkyne, followed by tosylate-assisted intermolecular transfer