Zhang, Chun-Hui published the artcileAn easily and environmentally friendly accessible small-molecule acetylenic donor for organic solar cells, Product Details of C18H10, the publication is Dyes and Pigments (2019), 983-988, database is CAplus.
Photovoltaic aryl acetylenes may provide a green access to high performance electron donors for organic solar cells. Here we describe a solution-processable acetylenic mol. An(DTDPPA)2, which consists of a central anthracen-9,10-diyl unit and two dithienyldiketopyrrolopyrrole end-groups via acetylenic linkages. It’s worth noting that the acetylenic linkages in An(DTDPPA)2 enable facile and green accessibility through Sonogashira reactions with atypically high yield and atom efficiency. In solid film An(DTDPPA)2 features an absorption peak at 630 nm with an emerging shoulder at 686 nm. The HOMO/LUMO level of An(DTDPPA)2 is estimated as -5.18/-3.62 eV according to cyclic voltammetry and the optical absorption onset. Due to the highly coplanar configuration and close packing, the hole mobility of the thermally annealed film of An(DTDPPA)2 was improved to as high as 9.30 × 10-4 cm2 V-1 s-1. In combination with PC61BM, the bulk heterojunction solar cells provide a power conversion efficiency of 5.26% utilizing no processing additive or solvent vapor annealing. The results are carefully discussed in comparison to the related compounds without the acetylenic linkage and based on the DFT mol. modeling. The demonstrated dramatic effects of acetylenic linkages in this work may encourage and motivate more efforts to design easily accessible and eco-friendly organic semiconductors.
Dyes and Pigments published new progress about 18512-55-5. 18512-55-5 belongs to naphthyridine, auxiliary class Alkynyl,Anthracene, name is 9,10-Diethynylanthracene, and the molecular formula is C19H14N2, Product Details of C18H10.
Referemce:
https://en.wikipedia.org/wiki/1,8-Naphthyridine,
1,8-Naphthyridine | C8H6N2 – PubChem