Electrochemical sensing for caspase 3 activity and inhibition using quantum dot functionalized carbon nanotube labels

2011 ◽  
Vol 47 (4) ◽  
pp. 1178-1180 ◽  
Author(s):  
Jing-Jing Zhang ◽  
Ting-Ting Zheng ◽  
Fang-Fang Cheng ◽  
Jun-Jie Zhu
Chemosphere ◽  
2015 ◽  
Vol 136 ◽  
pp. 204-210 ◽  
Author(s):  
Hyeon-gyu Choi ◽  
Moon Son ◽  
SangHyeon Yoon ◽  
Evrim Celik ◽  
Seoktae Kang ◽  
...  

2019 ◽  
Vol 9 (22) ◽  
pp. 4952 ◽  
Author(s):  
Sushma Rani ◽  
Bharti Sharma ◽  
Shivani Kapoor ◽  
Rajesh Malhotra ◽  
Rajender S. Varma ◽  
...  

In the present study, we report a highly effective electrochemical sensor for detecting 2,4-dinitrotoluene (2,4-DNT). The amperometric determination of 2,4-DNT was carried out using a gold electrode modified with zinc–metal organic framework-8 and silver quantum dot (Zn-MOF-8@AgQDs) composite. The synthesized nanomaterials were characterized by using transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR) and X-ray powder diffraction (XRD). The synthesized nanocomposite proved to be efficient in electro-catalysis thereby reducing the 2,4-DNT. The unique combination present in Zn-MOF-8@AgQDs composite offered an excellent conductivity and large surface area enabling the fabrication of a highly sensitive (−0.238 µA µM−1 cm−2), selective, rapid and stable 2,4-DNT sensor. The dynamic linear range and limit of detection (LOD) was about 0.0002 µM to 0.9 µM and 0.041 µM, respectively. A 2,4-DNT reduction was also observed during the linear sweep voltammetry (LSV) experiments with reduction peaks at −0.49 V and −0.68 V. This is an unprecedented report with metal organic framework (MOF) composite for sensing 2,4-DNT. In addition, the presence of other species such as thiourea, urea, ammonia, glucose, and ascorbic acid displayed no interference in the modified electrode suggesting its practicability in various environmental applications.


Author(s):  
Simas Rackauskas ◽  
Andrei V. Alaferdov ◽  
Tatiana Rackauskas ◽  
Raluca Savu ◽  
Stanislav A. Moshkalev ◽  
...  

2008 ◽  
Vol 9 (3) ◽  
pp. 317-322 ◽  
Author(s):  
Yeong Don Park ◽  
Jung Ah Lim ◽  
Yunseok Jang ◽  
Minkyu Hwang ◽  
Hwa Sung Lee ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document