Universal Fluorescence Enhancement Substrate Based on Multiple Heterostructure Photonic Crystal with Super-Wide Stopband and Highly Sensitive Cr(VI) Detecting Performance

被引：28

作者：

Zhang, Lijing ^{[1
]}

Wang, Jie ^{[1
]}

Tao, Shengyang ^{[1
]}

Geng, Chong ^{[2
]}

Yan, Qingfeng ^{[3
]}

机构：

[1] Dalian Univ Technol, Dept Chem, Dalian 116024, Peoples R China

[2] Hebei Univ Technol, Sch Elect & Informat Engn, Tianjin 300401, Peoples R China

[3] Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China

来源：

ADVANCED OPTICAL MATERIALS | 2018年 / 6卷 / 11期

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

Cr(VI) detection; fluorescence enhancement; heterostructure photonic crystal; super-wide stopband; universal substrate; CONVERSION EMISSION ENHANCEMENT; QUANTUM DOTS; WATER; PHOTOLUMINESCENCE; NANOPARTICLES; SILVER; GOLD;

D O I：

10.1002/adom.201701344

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Universal fluorescence (FL) enhancement is achieved based on a multiple heterostructure photonic crystal (MHPC) with a super-wide stopband. This MHPC film is fabricated by layer-by-layer deposition of annealed colloidal crystal monolayers with gradient sizes, and it displays a broadened stopband (from 280 to 650 nm) that can overlap with the excitation wavelength (E) and the emission wavelength (F) of most commonly used fluorescent media. More than 100-fold FL enhancement of [Ru(dpp)(3)Cl-2], rhodamine 6G (Rh6G), and rhodamine B (RhB) on the MHPC is observed compared to that on a glass substrate. This super-wide stopband MHPC may find significant applications for augmenting FL intensity in chemical and biochemical sensing, imaging, disease diagnosis, and environmental monitoring. The function of MHPC/rhodium B hydrazide composites is further demonstrated in the semiquantitative detection of Cr(VI), and the limit of detection of Cr(VI) is effectively improved to 0.2 ppb.

引用

页数：9