Two-Photon Absorption Properties of Two Kinds of Compounds with Fluorene as Centre

被引：1

作者：

Li Xiao-Jing ^{[1
]}

Li Jing ^{[1
]}

Wang Chuan-Kui ^{[1
]}

机构：

[1] Shandong Normal Univ, Coll Phys & Elect, Jinan 250014, Peoples R China

来源：

ACTA PHYSICO-CHIMICA SINICA | 2009年 / 25卷 / 11期

关键词：

One-photon absorption; Two-photon absorption; Response function method; Molecule photonics; OPTICAL-PROPERTIES; ORGANIC-MOLECULES; DYNAMICS; STATE; LASER;

D O I：

10.3866/PKU.WHXB20091033

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 two-photon absorption properties of two newly synthesized compounds containing fluorene as a pi centre (denoted SK-G1 and NT-G1) were calculated using a response function method with density functional theory. Results show that both compounds have large one-photon and two-photon absorption abilities. In the low energy region, the maximum one-photon absorption strength of NT-G1 is twice as much as that of SK-G1 and its maximum absorption is red shifted compared to that for SK-G1. The maximum two-photon absorption cross section of NT-G1 is about five times as large as that of SK-G1 and those are found for the second excited states. Furthermore, NT-G1 has a wider two-photon absorption energy band. The optical properties of the molecules are closely related to their charge transfer processes when they are excited. The solvent effect on their one-photon absorption properties was calculated using the Onsager model. The numerical calculation is found to be in good agreement with experimental measurements.

引用

页码：2319 / 2324

页数：6

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