Reusable Xerogel Containing Quantum Dots with High Fluorescence Retention

被引：7

作者：

Liang, Xiang-Yong ^{[1
,2
]}

Wang, Lu ^{[1
,2
]}

Chang, Zhi-Yi ^{[1
,2
]}

Ding, Li-Sheng ^{[1
]}

Li, Bang-Jing ^{[1
]}

Zhang, Sheng ^{[3
]}

机构：

[1] Chinese Acad Sci, Chengdu Inst Biol, Key Lab Mt Ecol Restorat & Bioresource Utilizat, Chengdu 610041, Sichuan, Peoples R China

[2] Univ Chinese Acad Sci, Coll Life Sci, Beijing 100049, Peoples R China

[3] Sichuan Univ, Polymer Res Inst, State Key Lab Polymer Mat Engn, Chengdu 610065, Sichuan, Peoples R China

来源：

POLYMERS | 2018年 / 10卷 / 03期

基金：

中国国家自然科学基金;

关键词：

quantum dots; host-guest interactions; xerogel; BETA-CYCLODEXTRIN; INCLUSION COMPLEX; SENSITIVE DETECTION; OPTICAL-PROPERTIES; AMINO-ACIDS; NANOPARTICLES; HYDROGELS; FILMS; RECOGNITION; VANILLIN;

D O I：

10.3390/polym10030310

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Although various analytical methods have been established based on quantum dots (QDs), most were conducted in solution, which is inadequate for storage/transportation and rapid analysis. Moreover, the potential environmental problems caused by abandoned QDs cannot be ignored. In this paper, a reusable xerogel containing CdTe with strong emission is established by introducing host-guest interactions between QDs and polymer matrix. This xerogel shows high QDs loading capacity without decrease or redshift in fluorescence (the maximum of loading is 50 wt % of the final xerogel), which benefits from the steric hindrance of beta-cyclodextrin (beta CD) molecules. Host-guest interactions immobilize QDs firmly, resulting in the excellent fluorescence retention of the xerogel. The good detecting performance and reusability mean this xerogel could be employed as a versatile analysis platform (for quantitative and qualitative analyses). In addition, the xerogel can be self-healed by the aid of water.

引用

页数：14

共 63 条

[1] Size-dependent dissociation pH of thiolate ligands from cadmium chalcogenide nanocrystals [J].