Synthesis, characterization, two-photon absorption, and optical limiting properties of triphenylamine-based dendrimers

被引：43
作者：
Xu, Bin [2 ]
Fang, Honghua [1 ]
Chen, Feipeng [2 ]
Lu, Hongguang [2 ]
He, Jiating [2 ]
Li, Yaowen [2 ]
Chen, Qidai [1 ]
Sun, Hongbo [1 ]
Tian, Wenjing [2 ]
机构：
[1] Jilin Univ, State Key Lab Integrated Optoelect, Changchun 130012, Peoples R China
[2] Jilin Univ, State Key Lab Supramol Struct & Mat, Changchun 130012, Peoples R China
来源：
NEW JOURNAL OF CHEMISTRY | 2009年 / 33卷 / 12期
关键词：
COOPERATIVE ENHANCEMENT; ABSORBING CHROMOPHORES; ORGANIC DENDRIMERS; BUILDING-BLOCKS; ENERGY-TRANSFER; FLUOROPHORES; DERIVATIVES; MOLECULES; EXCITATIONS; DYNAMICS;
D O I：
10.1039/b9nj00393b
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Three pi-conjugated dendrimers (Ph-G0, Ph-G1 and Ph-G2) bearing triphenylamine moieties have been synthesized through a convergent synthetic strategy without any protection-deprotection chemistry. The linear photophysical properties, two-photon absorption (TPA), and optical limiting behavior of the dendrimers were investigated in solution at room temperature. Linear absorption and emission spectra revealed a bathochromic shift and decreased fluorescence quantum yields with increasing dendrimer generation. A strong cooperative effect in the TPA absorption of these dendrimers was observed. The TPA cross-sections increase gradually with the proportion of triphenylamine units and the maximum value of the TPA cross-section can reach 5690 GM for Ph-G2. These triphenylamine-based dendrimers exhibited efficient two-photon optical limiting under femtosecond excitation.
引用
收藏
页码：2457 / 2464
页数：8
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