标题：Novel heterocycle-based organic molecules with two-photon induced blue fluorescent emission
作者：Huang, ZL; Lei, H; Li, N; Qiu, ZR; Wang, HZ; Guo, JD; Luo, Y; Zhong, ZP; Liu, XF; Zhou, ZH
作者机构：[Huang, ZL; Lei, H; Li, N; Qiu, ZR; Wang, HZ; Guo, JD; Luo, Y; Zhong, ZP; Liu, XF; Zhou, ZH]Zhongshan Univ, State Key Lab Optoelect 更多
通讯作者地址：[Wang, HZ]Zhongshan Univ, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Peoples R China.
来源：JOURNAL OF MATERIALS CHEMISTRY
摘要：Two-photon absorption and two-photon induced blue emission characteristics of a series of heterocycle-based organic molecules are investigated experimentally and by quantum-chemical computations. The molecules consist of a typical A-pi-A' structure, where heterocycle, styryl and formyl groups are employed as A, pi-conjugated and A' moieties, respectively. Experimental results indicate that significant enhancements in the blue emission efficiency and two-photon absorption cross-sections can be achieved by replacing S and O atoms with an N atom in the heterocycle acceptor moiety, which is also supported by the quantum-chemical computations. Additionally, larger two-photon absorption cross-sections can be obtained by choosing appropriate solvents, as indicated by the computations.