Boron-doped carbon nanoparticles: Size-independent color tunability from red to blue and bioimaging applications. (January 2016)

• Record Type: Journal Article
• Authors: Sadhanala, Hari Krishna; Nanda, Karuna Kar
• Is Part Of: Carbon. Volume 96(2016)
• Page Start: 166
• Page End: 173
• Publication Date: 2016-01
• Subjects: Carbon -- Periodicals; Carbone -- Périodiques; Koolstof; Toepassingen; Electronic journals; 546.681
• DOI: 10.1016/j.carbon.2015.08.096
• Languages: English
• ISSNs: 0008-6223

Abstract

Abstract: Here, we report the hydrothermal synthesis of boron-doped CNPs (B-CNPs) with different size/atomic percentage of doping and size-independent color tunability from red to blue. The variation of size/atomic percentage of B is achieved by simply varying the reaction time, while the color tunability is obtained by diluting the solution. With dilution, the luminescence spectra are not only blue-shifted, the intensity increases as well. The huge blue-shift in the emission energy (∼1 eV) is believed to be due to the increase in the interparticle distance. The quantum yield with optimum dilution is found to increase with boron doping though it is very low as compared to CNPs and nitrogen-doped CNPs. Finally, we show that B-CNPs with a quantum yield of 0.5% can be used for bioimaging applications.