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Cover Picture: A‐π‐D‐π‐A type Small Molecules Using Ethynylene Linkages for Organic Solar Cells with High Open‐circuit Voltages (Chin. J. Chem. 4/2016)
Author(s) -
Gao Ke,
Xiao Liangang,
Kan Yuanyuan,
Li Lisheng,
Yan Yajing,
Huang Huadong,
Peng Junbiao,
Cao Yong,
Peng Xiaobin
Publication year - 2016
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.201690010
Subject(s) - chemistry , sonogashira coupling , acetylene , cover (algebra) , small molecule , molecule , chin , combinatorial chemistry , photochemistry , organic chemistry , palladium , catalysis , medicine , anatomy , mechanical engineering , biochemistry , engineering
The cover picture shows that two simple small molecules BEDPP and NEDPP were designed and synthesized via Sonogashira reaction. The typical method of introducing acetylene linkages by Sonogashira reactions can avoid the usage of toxic stannyl intermediates and potentially dangerous lithiation reactions. The solution‐processed BHJ OSCs based on BEDPP and NEDPP exhibit PCEs of 1.48% and 2.31% with very high V oc values of 0.90 and 0.98 V without using solvent additive and without post‐treatment. More details are discussed in the article by Peng et al . on page 353–358.