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课题组宋斌等同学在J. Am. Chem. Soc.上发表论文

发布日期:2016-03-26

题目:One-Dimensional Fluorescent Silicon Nanorods Featuring Ultrahigh Photostability, Favorable Biocompatibility and Excitation Wavelength-Dependent Emission Spectra

作者:
Bin Song, Yiling Zhong, Sicong Wu, Binbin Chu, Yuanyuan Su, and Yao He*

单位:
Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Institute of Functional Nano and Soft Materials (FUNSOM), Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, Jiangsu 215123, China

摘要:

We herein report a kind of one-dimensional biocompatible fluorescent silicon nanorods (SiNRs) with tunable lengths ranging ~100-250 nm, which can be facilely prepared through one-pot microwave synthesis. In addition to the strong fluorescence (quantum yield value: ~15%) and negligible toxicity, the resultant SiNRs exhibit excitation wavelength-dependent photoluminescence whose maximum emission wavelength ranges from ~450 nm to ~600 nm under serial excitation wavelengths from 390 to 560 nm, providing feasibility for multi-color biological imaging. More significantly, the SiNRs are ultrahighly photostable, preserving strong and nearly unchanged fluorescence under 400-min high-power UV irradiation, which is in sharp contrast to severe fluorescence quenching of organic dyes (e.g., FITC) or II-VI quantum dots (QDs) (e.g., CdTe QDs and CdSe/ZnS QDs) within 15- or 160-min UV treatment under the same experiment conditions, respectively. Taking advantage of these attractive merits, we further exploit the SiNRs as a novel type of color converters for the construction of white light-emitting diodes (LED), which is the first proof-of concept demonstration of LED device fabricated using the one-dimensional fluorescent silicon nanostructures.

影响因子:12.113

分区情况:1区

链接http://pubs.acs.org/doi/abs/10.1021/jacs.6b00479

 
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