title: Cyclodextrin capped CdTe quantum dots as versatile fluorescence sensors for nitrophenol isomers.
abstract: Cyclodextrin (CD) capped CdTe quantum dots (QDs) were prepared with uniform dimension (average diameter ∼5 nm) and high quantum yield (ca. 65%). By taking advantage of the inclusion complexation of CD, β-CD-CdTe QDs exhibited strong fluorescence quenching in a linear relationship with the concentration of o-, m- and p-nitrophenol in the range of 20-100 μM. The detection limit reached 0.05 μM for o-/p-nitrophenol and 0.3 μM for m-nitrophenol. The fluorescence decay study revealed the stabilization effect of CD covering on CdTe QDs and fine-tuning of the fluorescence for selective ultrasensitive detection of nitrophenol isomers.
authors.affiliation: Key Laboratory of Soft Chemistry and Functional Materials (Ministry of Education of China), Nanjing University of Science and Technology, Nanjing 210094, China. whtang@mail.njust.edu.cn.
authors.forename: Zhixing
authors.initials: Z
authors.lastname: Zhang
authors.affiliation: Key Laboratory of Soft Chemistry and Functional Materials (Ministry of Education of China), Nanjing University of Science and Technology, Nanjing 210094, China. whtang@mail.njust.edu.cn.
authors.forename: Jie
authors.initials: J
authors.lastname: Zhou
authors.affiliation: Key Laboratory of Soft Chemistry and Functional Materials (Ministry of Education of China), Nanjing University of Science and Technology, Nanjing 210094, China. whtang@mail.njust.edu.cn.
authors.forename: Yun
authors.initials: Y
authors.lastname: Liu
authors.affiliation: Key Laboratory of Soft Chemistry and Functional Materials (Ministry of Education of China), Nanjing University of Science and Technology, Nanjing 210094, China. whtang@mail.njust.edu.cn.
authors.forename: Jian
authors.initials: J
authors.lastname: Tang
authors.affiliation: Key Laboratory of Soft Chemistry and Functional Materials (Ministry of Education of China), Nanjing University of Science and Technology, Nanjing 210094, China. whtang@mail.njust.edu.cn.
authors.forename: Weihua
authors.initials: W
authors.lastname: Tang