期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 345, 期 2, 页码 222-227出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2010.01.072
关键词
Quantum dots; Silica; Luminescence; Functionalization; IgC
资金
- Foundation of Taishan Scholar
A sol-gel approach including partially removing capping agents, depositing SiO(2) monomers, and growing a SiO(2) shell was developed to generate a bio-compatible functionalization on CdTe quantum dots (QDs). The QDs retained their high photoluminescence (PL) efficiency after coating with a SiO(2) shell (22.5%) by controlling the surface state of the QDs to decrease PL degradation during a sol-gel preparation. Furthermore, the CdTe QDs with a SiO(2) shell were conjugated with IgG using 3-sulfo-N-hydroxysuccinimide or streptavidin-maleimide as linkers. The biotin-streptavidin linker resulted in a high PL efficiency retained (only similar to 23% lower than the initial value of the QDs), which is crucial for bio-applications. (c) 2010 Elsevier Inc. All rights reserved.
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