White light emission by controlled mixing of carbon dots and rhodamine B for applications in optical thermometry and selective Fe3+ detection. Issue 88 (6th September 2016)

• Record Type: Journal Article
• Authors: Mandani, Sonam; Sharma, Bhagwati; Dey, Deepa; Sarma, Tridib K.
• Is Part Of: RSC advances. Volume 6:Issue 88(2016)
• Page Start: 84599
• Page End: 84603
• Publication Date: 2016-09-06
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c6ra17306c
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : Controlled mixing of rhodamine B with fluorescent carbon dots derived from β-carotene resulted in a white light emitting mixture that could be used for optical thermometry and Fe 3+ ion detection in water. Abstract : A simple mixing of rhodamine B with fluorescent carbon dots in water led to aggregation of the dye molecules on the carbon dot surface. Controlling the emission of free rhodamine B dye with that of the resultant carbon dot-aggregated rhodamine B composite resulted in efficient white light emission with the CIE coordinate (0.33, 0.32). The white light emitting system can be incorporated into a gel or polymer matrix for solid-state processibility. Further, selective sensing of Fe 3+ ions as well as reversible and thermo-responsive emission in the temperature range of 25–80 °C in water shows the versatility in application potential of the nanocomposite.