Journal
JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 356, Issue 1, Pages 63-68Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2010.12.078
Keywords
Colloidal photonic crystals; Dual stopbands; Fluorescence enhancement
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Funding
- NSFC [50973117, 21074139, 20904061, 50625312, 50971011, U0634004, 20721061]
- Beijing Natural Science Foundation [1102025]
- Research Fund for the Doctoral Program of Higher Education of China [20091102110038]
- Innovation Foundation of BUAA for PhD Graduates [YWF-10-02-407]
- 973 Program [2007CB936403, 2009CB930404, 2011CB932303, 2011CB808400]
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In this work, we present a facile approach on the remarkable enhancement of fluorescent signal by heterostructure colloidal photonic crystals (PCs) with dual stopbands. The intensity of fluorescent medium on heterostructure PCs with dual stopbands overlapping the excitation wavelength and the emission wavelength of fluorescent medium can be up to 162-fold enhancement in comparison to that on the control sample. Otherwise, parameters of heterostructure PC films such as film thickness or stacking order have important effects on fluorescent signals. The method will be of great significance for developing the highly sensitive fluorescence-based detection. (C) 2010 Elsevier Inc. All rights reserved.
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