Design and synthesis of heterocyclic multi-branched dyes for two-photon absorption

被引：22
|
作者：
Abbotto, A
Beverina, L
Bradamante, S
Facchetti, A
Pagani, GA
Bozio, R
Ferrante, C
Pedron, D
Signorini, R
机构：
[1] Univ Milan, Dept Mat Sci, I-20125 Milan, Italy
[2] Univ Milan, INSTM, I-20125 Milan, Italy
[3] CNR, Inst Mol Sci & Technol, I-20133 Milan, Italy
[4] Univ Padua, Dept Chem Phys, I-35131 Padua, Italy
[5] Univ Padua, INSTM, I-35131 Padua, Italy
来源：
SYNTHETIC METALS | 2003年 / 139卷 / 03期
关键词：
multiphoton absorption spectroscopy; heterocycle synthesis; laser spectroscopy; non-linear optical methods;
D O I：
10.1016/S0379-6779(03)00281-9
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We report the first example of a heterocycle-based multi-branched two-photon absorption (TPA) dye. We show that the new chromophore presents a very large TPA cross-section in the femtoseconds (fs) regime. Comparison of the TPA cross-sections between the branched system and the corresponding "monomeric unit" shows a strong cooperative enhancement. A value of 22.6:1, corresponding to a 750% enhancement, was observed. (C) 2003 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：795 / 797
页数：3
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