Photoluminescence enhancement by coupling of ovalbumin and CdTe quantum dots and its application as protein probe

Autor:	Hai-Li Zhang, Xiao-Feng Hua, Jianhao Wang, Xiu-Qing Li, Zhen-Li Huang, Hai-Qiao Wang, Yuan-Di Zhao
Rok vydání:	2007
Předmět:	Detection limit Range (particle radiation) Ovalbumin Colloid and Surface Chemistry Photoluminescence Aqueous solution biology Quantum dot Chemistry Analytical chemistry biology.protein Cadmium telluride photovoltaics Blueshift
Zdroj:	Colloids and Surfaces A: Physicochemical and Engineering Aspects. 305:48-53
ISSN:	0927-7757
DOI:	10.1016/j.colsurfa.2007.04.039
Popis:	CdTe quantum dots were synthesized in aqueous solution using 3-Mercaptopropionic acid as stabilizing agent. Chemically reduced ovalbumin had been used to modify the surface of CdTe QDs, resulting in the enhancement of photoluminescence intensity and the blue shift of the PL peak. A new method for the determination of ovalbumin is established based on the PL changes. Under the optimal conditions, experiment results showed that the PL intensity and the shift of PL peak are both in good linear with the ovalbumin concentration in the range of 0.125–4 μM and the detection limit was 0.03 μM. The method is compared with the traditional UV absorption method, and shows relatively good reliability.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::36c6582bbbe070fa054f88bf4bed107f https://doi.org/10.1016/j.colsurfa.2007.04.039 Zobrazit plný text záznamu Full Text from ScienceDirect