The invention relates to novel organic semiconducting compounds containing apolycyclicunit, to methods for their preparation and educts or intermediates used therein, to compositions, polymer blends and formulations containing them, to the use of the compounds, compositions and polymer blends as organic semiconductors in, or for the preparation of, organic electronic (OE) devices, especially organic photovoltaic (OPV) devices, perovskite-based solar cell (PSC) devices, organic photodetectors (OPD), organic field effect transistors (OFET) and organic light emitting diodes (OLED), and to OE, OPV, PSC, OPD,OFET and OLED devices comprising these compounds, compositions or polymer blends.
Synthesis and Characterization of a 2-(1,1-Dicyanomethylene) rhodanine-based Nonfullerene Acceptor for OPVs
作者:Changwoo Koh、Eunhee Lim
DOI:10.1002/bkcs.11435
日期:2018.4
We synthesized an A–π–D–π–A‐type nonfullerene small molecule acceptor (Flu‐CNRH) based on fluorene and 2‐(1,1‐dicyanomethylene)rhodanine (CNRH) by a Knoevenagel condensation of the diformyl compound (Flu‐T‐CHO) and CNRH for the use as acceptors in organic photovoltaic cells (OPVs). Introduction of CNRH end groups effectively lowered the highest occupied molecular orbital (HOMO) and the lowest unoccupied