Journal
JOURNAL OF MATERIALS CHEMISTRY C
Volume 4, Issue 16, Pages 3540-3545Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6tc00314a
Keywords
-
Funding
- 973 program [2015CB932001]
- National Natural Science Foundation of China [21475080, 21305082, 21571116, 21306108]
- Natural Science Foundation of Shanxi Province [2014011016-2, 2013011009-5, 2012011007-2]
- Shanxi Scholarship Council of China [2014-018]
- Innovative Talents in Higher School Support Plan [2014107]
- Technology Foundation for Selected Overseas Chinese Scholar in Shanxi
Ask authors/readers for more resources
A one-pot green'' synthesis of water soluble and pH-responsive natural silk fibroin (SF)-stabilized fluorescent copper nanoclusters (CuNCs) was reported without using any additional reducing agents, and the as-prepared SF@CuNCs exhibited a fluorescence emission at 420 nm with highly stable properties. The reversible pH sensor of the fluorescent SF@CuNCs has been designed based on the obvious fluorescence enhancing properties of CuNCs. Significantly, the SF@CuNCs described here were employed as pH sensors by virtue of the fluorescence intensity of their sensitive response to fluctuating pH in a linear range of 6.08-10.05. Meanwhile, the fluorescence intensity of the SF@CuNCs increased by around 8-fold at high pH values compared with a low pH of 6.08. As expected, the pH sensor was sensitive to different buffer solutions, and also presented a good linear relationship in different buffer solutions. Besides, the ionic strength of the buffers had a slight influence on the pH-responsive behavior and various metal ions showed almost no effects. The proposed method was successfully used to detect the pH of real water samples, thereby indicating its potential practical application.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available