Triangular platinum(II) metallacycles: Syntheses, photophysics, and nonlinear optics

doi:10.1021/am509074m

CORC > 北京大学 > 化学与分子工程学院

	Triangular platinum(II) metallacycles: Syntheses, photophysics, and nonlinear optics
	Fan, Yuanpeng ; Zhao, Dahui
刊名	acs applied materials and interfaces
	2015
DOI	10.1021/am509074m
英文摘要	Three triangular platinum(II) diimine metallacycles incorporating large cyclic oligo(phenylene-ethynylene) (OPE) bisacetylide ligands are synthesized, and their photophysical properties are studied. Two types of triplet excited states with ligand/metal-to-ligand charge-transfer and acetylide-ligand-centered characteristics respectively, are exhibited by these complexes depending on the size (conjugation length) and electronic features of the cyclic OPE ligands. When the energy levels of the two excited states are close to each other, the lowest triplet state is found to switch between the two in varied solvents, resulting from their relative energy inversion induced by solvent polarity change. Density functional theory and time-dependent density functional theory calculations provide corroborative evidence for such experimental conclusions. More importantly, the designed metallacycles show impressive two-photon absorption (2PA) and two-photon excitation phosphorescing abilities, and the 2PA cross section reaches 1020 GM at 680 nm and 670 GM at 1040 nm by two different metallacycles. Additionally, pronounced reverse saturable absorptions are observed with these metallacycles by virtue of their strong transient triplet-state absorptions. ? 2015 American Chemical Society.; SCI(E); EI; 0; ARTICLE; dhzhao@pku.edu.cn; 11; 6162-6171; 7
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/329122]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Fan, Yuanpeng,Zhao, Dahui. Triangular platinum(II) metallacycles: Syntheses, photophysics, and nonlinear optics[J]. acs applied materials and interfaces,2015.
APA	Fan, Yuanpeng,&Zhao, Dahui.(2015).Triangular platinum(II) metallacycles: Syntheses, photophysics, and nonlinear optics.acs applied materials and interfaces.
MLA	Fan, Yuanpeng,et al."Triangular platinum(II) metallacycles: Syntheses, photophysics, and nonlinear optics".acs applied materials and interfaces (2015).