Star-shaped D-pi-A conjugated molecules: synthesis and broad absorption bands.
Two donor-acceptor hybrid star-shaped D-pi-A molecules were facilely developed. The absorption spectra of TrTD2A and TrT2DA, which almost covered the whole visible range, were tuned by changing the ratio of donor and acceptor groups. However, the PL quantum efficiencies of TrTD2A and TrT2DA in solutions were dramatically reduced after the introduction of benzothiadiazole unit as acceptor chromophore.
Wang
Jin-Liang
JL
Beijing National Laboratory for Molecular Sciences, College of Chemistry, Peking University, Beijing 100871, China.
Tang
Zheng-Ming
ZM
Xiao
Qi
Q
Ma
Yuguo
Y
Pei
Jian
J