期刊
SCIENCE CHINA-CHEMISTRY
卷 56, 期 9, 页码 1204-1212出版社
SCIENCE PRESS
DOI: 10.1007/s11426-013-4924-7
关键词
two-photon absorption; aggregation-induced emission; thiophene-based triphenylamine; 1,3,5-triazine
资金
- National Natural Foundation of China [2116110444, 21172073]
- National Basic Research Program of China (973 program) [2013CB733700, 2013CB834701]
- Fundamental Research Funds for the Central Universities [WJ0913001]
Two new multibranched thiophene-based triarylamine derivatives with 1,3,5-triazine core are synthesized and characterized. Their one- and two-photon absorption properties and aggregation-induced emission effect have been investigated. Both the STAPA-based compounds are AIE active. The two-photon absorption (2PA) cross sections measured by the open aperture Z-scan technique are determined to be 620 and 1610 GM for STAPA-a and STAPA-b in chloroform, respectively, which dramatically increase with the introduction of alkyl chains. The relationship between their structures and properties on one- and two-photon absorption and aggregation-induced emission is discussed, which allows us to examine the effect of introducing alkyl chains. In addition, solvent effects also show a significant influence on the 2PA cross section. The two compounds with excellent AIE and 2PA properties provide attractive alternatives for the biophotonic materials.
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