Two-photon absorption properties of symmetric substituted diacetylene: drastic enhancement of the cross section near the one-photon absorption peak

被引：165

作者：

Kamada, K ^{[1
]}

Ohta, K

Yoichiro, I

Kondo, K

机构：

[1] Natl Inst Adv Ind Sci & Technol, Photon Res Inst, Ikeda, Osaka 5638577, Japan

[2] Ritsumeikan Univ, Dept Appl Chem, Fac Sci & Engn, Shiga 5258577, Japan

来源：

CHEMICAL PHYSICS LETTERS | 2003年 / 372卷 / 3-4期

关键词：

D O I：

10.1016/S0009-2614(03)00413-5

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：

Two-photon absorption (TPA) spectra are presented for newly synthesized bis(pyridylstyryl)-substituted diacetylene and related methyl triflate derivatives. The TPA cross section of a derivative (MPPBT) was found to increase drastically with decreasing the incident wavelength below 650 nm and to reach (2.42 +/- 0.46) x 10(-47) cm(4) s molecule(-1) photon(-1) at 571 nm, in addition to the weaker, lowest energy TPA peak centered at 764 nm. A four-state model was needed to account for the observed spectral shape, suggesting that the drastic enhancement is due to one-photon resonance enhancement not only of the lowest energy TPA transition but also of a higher energy two-photon transition. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：386 / 393

页数：8

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