Room-Temperature Phosphorescence and Reversible White Light Switch Based on a Cyclodextrin Polypseudorotaxane Xerogel

被引：75

作者：

Li, Jing-Jing ^{[1
]}

Zhang, Heng-Yi ^{[1
,2
]}

Zhang, Yi ^{[1
]}

Zhou, Wei-Lei ^{[1
]}

Liu, Yu ^{[1
,2
]}

机构：

[1] Nankai Univ, Dept Chem, State Key Lab Elementoorgan Chem, Tianjin 300071, Peoples R China

[2] Nankai Univ, Collaborat Innovat Ctr Chem Sci & Engn, Tianjin 300071, Peoples R China

来源：

ADVANCED OPTICAL MATERIALS | 2019年 / 7卷 / 20期

基金：

中国国家自然科学基金;

关键词：

alpha-cyclodextrin; pseudopolyrotaxane xerogel; room-temperature phosphorescence; white-light emission; INCLUSION; EMISSION; HYDROGEL; BEHAVIOR;

D O I：

10.1002/adom.201900589

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The development of metal-free room-temperature phosphorescent (RTP) and white-light-emitting supramolecular materials is significant for artificial soft materials. Herein, a polypseudorotaxane xerogel is fabricated by threading a linear brominated aromatic aldehyde polymer into alpha-cyclodextrin cavities. The xerogel can be excited to produce not only RTP signals based on the xerogel network structure's strong restriction of phosphor vibrations and suppression of the nonradiative relaxation process but also white-light emission at room temperature. Notably, the polypseudorotaxane system possesses excellent fluorescence-phosphorescence dual emission properties and is capable of reversible photoluminescence switching between blue fluorescence emission and white-light emission in the presence and absence of water.

引用

页数：6

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