Triphenylamine-modified quinoxaline derivatives as two-photon photoinitiators
作者:Xingbo Cao、Feng Jin、Ying-Feng Li、Wei-Qiang Chen、Xuan-Ming Duan、Lian-Ming Yang
DOI:10.1039/b900464e
日期:——
Two new chromophores, triphenylamine-modified quinoxaline (TPAQ) and benzoquinoxaline (TPABQ), were synthesized, and their linear spectroscopy and two-photon absorption properties were investigated. For comparison, 4-ethoxyphenyl-substituted quinoxaline (EOQ) and benzoquinoxaline (EOBQ) were prepared. The results showed that TPAQ possesses a high fluorescence quantum yield and a high δ2PA value of >160 GM in the laser light wavelength range of 780–820 nm, and is superior to most common benzil-type compounds as a photoinitiator in two-photon initiated polymerization.