標題: A nanoporous optically transparent CdS-pHEMA hybrid with high optical sensing capability to dielectric liquids
作者: Liao, Hung-Chou
Liu, Yen-Yu
Chen, San-Yuan
Liu, Dean-Mo
材料科學與工程學系
Department of Materials Science and Engineering
公開日期: 4-Mar-2009
摘要: A hydrogel-based functional hybrid with highly uniformly dispersed nanoparticulate CdS semiconductors is proposed. The hybrid is synthesized using an in situ polymerization following an in situ chemical reduction, where the resulting particle size and the distribution of CdS nanocrystals (NCs) can be narrowly manipulated. The hybrids, containing a relatively small amount of the CdS NCs, exhibit a pronounced photoluminescence spectrum shift when in contact with a number of dielectric liquids and such a pronounced dielectric-confinement effect has been experimentally verified and modeled in this study. The sensing capability of the hybrids with respect to dielectric liquids or molecules can be optically characterized and varied depending upon the intensity of the dielectric environment surrounding the hybrids. This work suggests that the transparent, nanoporous CdS-pHEMA hybrids can be used as highly efficient optical sensing materials.
URI: http://dx.doi.org/10.1088/0957-4484/20/9/095504
http://hdl.handle.net/11536/7505
ISSN: 0957-4484
DOI: 10.1088/0957-4484/20/9/095504
期刊: NANOTECHNOLOGY
Volume: 20
Issue: 9
結束頁: 
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