Preparation of Highly Fluorescent and pH Responsive CdTe Quantum Dots Within Dynamic Covalent Hyperbranched Polymers and Their In Vitro Application as Fluorescence Probe

2015 ◽  
Vol 7 (4) ◽  
pp. 615-622 ◽  
Author(s):  
Yunfeng Shi ◽  
Zhiyong Wang ◽  
Xiaofang Weng ◽  
Linzhu Zhou ◽  
Baiqing Yuan ◽  
...  
2014 ◽  
Vol 9 (1) ◽  
Author(s):  
Yunfeng Shi ◽  
Zhimin Ma ◽  
Ningning Cui ◽  
Yanli Liu ◽  
Xiaoyu Hou ◽  
...  

2010 ◽  
Vol 104 (11) ◽  
pp. 1148-1155 ◽  
Author(s):  
Jianbo Xiao ◽  
Tingting Chen ◽  
Longsheng Chen ◽  
Hui Cao ◽  
Fan Yang ◽  
...  

Polyhedron ◽  
2014 ◽  
Vol 70 ◽  
pp. 77-84 ◽  
Author(s):  
José S. Casas ◽  
María S. García-Tasende ◽  
Agustín Sánchez ◽  
Ángeles Sánchez-González ◽  
José Sordo ◽  
...  

2012 ◽  
Vol 9 (1) ◽  
pp. 171-174 ◽  
Author(s):  
Jun'An Liu ◽  
Xiaolei Wei ◽  
Jianhua Cao ◽  
Hong Jiang

Water soluble CdTe quantum dots have shown potential as a platform for development of live cell imaging, but their cytotoxicity limits their biological applications. To decrease their cytotoxicity, an approach to modify CdTe quantum dots (QDs) with polyamidoamine (PAMAM) was employed by forming covalent bonds between them. The resultant nanocomposites as a cell imaging bioprobe for live PK15 and their in vitro toxicity were also investigated. The results showed that the prepared nanocomposites were able to enter PK15 cells with good biocompatibility and low cellular toxicity.


2016 ◽  
Vol Volume 11 ◽  
pp. 5429-5442 ◽  
Author(s):  
Yi Zhou ◽  
Ruju Wang ◽  
Bing Chen ◽  
Dan Sun ◽  
Yong Hu ◽  
...  

Micromachines ◽  
2021 ◽  
Vol 12 (6) ◽  
pp. 713
Author(s):  
Yuefeng Gao ◽  
Sai Xu ◽  
Zhijian Liu ◽  
Kezhen Yu ◽  
Xinxiang Pan

It is urgent that a convenient and sensitive technique of detecting Hg2+ be developed because of its toxicity. Conventional fluorescence analysis works with a single fluorescence probe, and it often suffers from signal fluctuations which are influenced by external factors. In this research, a novel dual-emission probe assembled through utilizing CdTe quantum dots (QDs) and rhodamine B was designed to detect Hg2+ visually. Only the emission of CdTe QDs was quenched after adding Hg2+ in the dual-emission probe, which caused an intensity ratio change of the two different emission wavelengths and hence facilitated the visual detection of Hg2+. Compared to single emission QDs-based probe, a better linear relationship was shown between the variation of fluorescence intensity and the concentration of Hg2+, and the limit of detection (LOD) was found to be11.4 nM in the range of 0–2.6 μM. Interestingly, the intensity of the probe containing Hg2+ could be recovered in presence of glutathione (GSH) due to the stronger binding affinity of Hg2+ towards GSH than that towards CdTe QDs. Based on this phenomenon, an IMPLICATION logic gate using Hg2+/GSH as inputs and the fluorescence signal of QDs as an output was constructed.


Luminescence ◽  
2015 ◽  
Vol 30 (7) ◽  
pp. 1112-1118 ◽  
Author(s):  
Chenxia Hao ◽  
Shaopu Liu ◽  
Dan Li ◽  
Jidong Yang ◽  
Youqiu He

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