期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 56, 期 27, 页码 7792-7796出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201702563
关键词
color switching; nanocrystal doping; rewritable media; tin oxide; visible light
资金
- National Natural Science Foundation of China [21671120]
- U.S. Department of Energy, Office of Science, Basic Energy Sciences, Chemical Sciences, Geosciences, & Biosciences (CSGB) Division [DE-SC0002247]
Visible-light-responsive reversible color-switching systems are attractive to many applications because visible light has superior penetration and causes far less damage to organic molecules than UV. Herein, we report that self-doping of SnO2-x nanocrystals with Sn2+ red-shifts their absorption to the visible region and simultaneously produces oxygen vacancies, which can effectively scavenge photogenerated holes and thus enable the color switching of redox dyes using visible light. Wavelength-selective switching can also be achieved by coupling the photocatalytic activity of the SnO2-x NCs with the color-switching kinetics of different redox dyes. The fast light response enables the further fabrication of a solid film that can be repeatedly written on using a visible laser pen or projection printing through a photomask. This discovery represents a big step forward towards practical applications, especially in areas in which safety issues and photodamage by UV light are of concern.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据