Reversible Near-Infrared Light Directed Reflection in a Self-Organized   Helical Superstructure Loaded with Upconversion Nanoparticles

doi:10.1021/ja500933h

CORC > 北京大学 > 化学与分子工程学院

	Reversible Near-Infrared Light Directed Reflection in a Self-Organized Helical Superstructure Loaded with Upconversion Nanoparticles
	Wang, Ling ; Dong, Hao ; Li, Yannian ; Xue, Chenming ; Sun, Ling-Dong ; Yan, Chun-Hua ; Li, Quan
刊名	journal of the american chemical society
	2014
关键词	CHOLESTERIC LIQUID-CRYSTALS CHIRAL MOLECULAR SWITCHES RED GREEN LASER
DOI	10.1021/ja500933h
英文摘要	Adding external, dynamic control to self-organized superstructures with desired functionalities is an important leap necessary in leveraging the fascinating molecular systems for applications. Here, the new light-driven chiral molecular switch and upconversion nano-particles, doped in a liquid crystal media, were able to self-organize into an optically tunable helical superstructure. The resulting nanoparticle impregnated helical superstructure was found to exhibit unprecedented reversible near-infrared (NIR) light-guided tunable behavior only by modulating the excitation power density of a continuous-wave NIR laser (980 nm). Upon irradiation by the NIR laser at the high power density, the reflection wavelength of the photonic superstructure red-shifted, whereas its reverse process occurred upon irradiation by the same laser but with the lower power density. Furthermore, reversible dynamic NIR-light-driven red, green, and blue reflections in a single thin film, achieved only by varying the power density of the NIR light, were for the first time demonstrated.; Chemistry, Multidisciplinary; SCI(E); EI; 26; ARTICLE; sun@pku.edu.cn; yan@pku.edu.cn; qlil@kent.edu; 12; 4480-4483; 136
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/215976]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Wang, Ling,Dong, Hao,Li, Yannian,et al. Reversible Near-Infrared Light Directed Reflection in a Self-Organized Helical Superstructure Loaded with Upconversion Nanoparticles[J]. journal of the american chemical society,2014.
APA	Wang, Ling.,Dong, Hao.,Li, Yannian.,Xue, Chenming.,Sun, Ling-Dong.,...&Li, Quan.(2014).Reversible Near-Infrared Light Directed Reflection in a Self-Organized Helical Superstructure Loaded with Upconversion Nanoparticles.journal of the american chemical society.
MLA	Wang, Ling,et al."Reversible Near-Infrared Light Directed Reflection in a Self-Organized Helical Superstructure Loaded with Upconversion Nanoparticles".journal of the american chemical society (2014).