Up-converted emission in a series of phenylazomethine dendrimers with a porphyrin core

被引：43

作者：

Yan, XZ

Goodson, T ^{[1
]}

Imaoka, T

Yamamoto, K

机构：

[1] Univ Michigan, Dept Chem, Detroit, MI 48201 USA

[2] Keio Univ, CREST Project, Yokohama, Kanagawa 2238522, Japan

[3] Keio Univ, Dept Chem, Yokohama, Kanagawa 2238522, Japan

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2005年 / 109卷 / 19期

关键词：

D O I：

10.1021/jp044105q

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：

The nonlinear optical and time-resolved properties of a series of phenylazomethine-porphyrin dendrimers are reported. The linear optical properties were also investigated, and the efficiency of the energy transfer process was obtained. Measurements were also carried out with the basic building-block molecules. The process of frequency up-converted emission was observed in these porphyrin dendrimers. The mechanism for this effect is investigated and related to the process of "hot-band" absorption in the phenylazomethine-porphyrin system. Time-resolved measurements also suggested efficient intramolecular vibrational energy redistribution in these systems. These properties suggest that the porphyrin dendrimers may also have applications in light harvesting of low-frequency photons, as well as in sensors.

引用

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页码：9321 / 9329

页数：9

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