Iridium(III) complexes in discs for two-photon excitation applications

被引：19
|
作者：
Ho, Mei-Lin [1 ]
Lin, Min-Hsiu [1 ]
Chen, Yi-Ting [1 ]
Sheu, Hwo-Shuenn [2 ]
机构：
[1] Soochow Univ, Dept Chem, Taipei 111, Taiwan
[2] Natl Synchrotron Radiat Res Ctr, Hsinchu, Taiwan
来源：
CHEMICAL PHYSICS LETTERS | 2011年 / 509卷 / 4-6期
关键词：
OPTICAL-DATA STORAGE; ABSORPTION PROPERTIES; ORGANIC MATERIALS; TRIPLET EMITTERS; IR-III; FLUORESCENCE; DYNAMICS; LIGANDS; DESIGN; PHOSPHORESCENCE;
D O I：
10.1016/j.cplett.2011.05.003
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：
Ir(ppy)(2)(H(2)dcbpy)PF6 (IrHP, ppy = 2-phenylpyridine, H(2)dcbpy = 4,4'-dicarboxy-2,2'-bipyridine) as the bridging ligand mixed with Zn(NO3)(2)center dot 6H(2)O in a ratio of 1:2 (ZnIrHP) in PMMA discs has been synthesized. The two-photon excitation emission of IrHP and ZnIrHP is ascribed to a (MLCT)-M-3 transition. The two-photon absorption (2PA) cross section and two-photon induced excited state absorption (ESA) cross section of IrHP were deduced as 1.37 x 10(4) +/- 6.87 x 10(2) GM and 6.63 x 10(-22) +/- 3.31 x 10(-23) cm(2), respectively, at 800 nm (1 GM = 10(-50) cm(4) s/photon). In contrast, the 2PA of ZnIrHP exhibits higher-order nonlinearity and the cross section was 5.68 x 10(5) +/- 2.84 x 10(4) GM. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：162 / 168
页数：7
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