White light emission from a mixture of silicon quantum dots and gold nanoclusters and its utilities in sensing of mercury(ii) ions and thiol containing amino acid. Issue 28 (21st May 2019)

• Record Type: Journal Article
• Authors: Tanwar, Swati; Sharma, Bhagwati; Kaur, Vishaldeep; Sen, Tapasi
• Is Part Of: RSC advances. Volume 9:Issue 28(2019)
• Page Start: 15997
• Page End: 16006
• Publication Date: 2019-05-21
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c9ra02012h
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : A simple solution based approach for generation of WLEM and its utilities in sensing of Hg 2+ ions and cysteine. Abstract : White light emitting mixture (WLEM) was produced by controlled mixing of blue emitting silicon quantum dots (Si QDs) and orange red emitting gold nanoclusters (Au NCs). The chromaticity color co-ordinate of the WLEM studied using CIE (Commission Internationale del'Eclairage) diagram was found to be (0.33, 0.32), which was very close to that of perfect white light emitting source. The WLEM can also be achieved in the form of gel, solid and film with nearly the same CIE co-ordinates which enhances its utility as white light-emitting source in solid state devices. The reversible and thermo-responsive behaviour of the WLEM broadens its application in thermal sensing. Furthermore, the system was found to be showing fast, sensitive and selective detection of Hg 2+ ions and thiol containing amino acid cysteine.