Strong cooperative enhancement of two-photon absorption in dendrimers

被引：0

作者：

Drobizhev, M

Karotki, A

Dzenis, Y

Rebane, A ^{[1
]}

Suo, ZY

Spangler, CW

机构：

[1] Montana State Univ, Dept Phys, Bozeman, MT 59717 USA

[2] Montana State Univ, Dept Chem & Biochem, Bozeman, MT 59717 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2003年 / 107卷 / 31期

关键词：

D O I：

10.1021/jp034986l

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We present, for the first time, unambiguous spectroscopic evidence of strong cooperative enhancement of two-photon absorption (TPA) in a series of dendritic macromolecules. The maximum TPA cross section increases in proportion to N-2, where N = 2, 4, 6 is the number of constituent identical chromophore units. We show that the enhancement is facilitated by the quasi-planar structure, which allows direct interbranch conjugation throughout the molecule.

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页码：7540 / 7543

页数：4

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