期刊
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
卷 6, 期 2, 页码 1627-1638出版社
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.7b02852
关键词
Coordination induced aggregation; L132 cells; Cytotoxicity; Stability of CDs; Photophysics of CDs; Static quenching; Green chemistry
资金
- DST-INSPIRE [IF120528]
Synthesis of highly luminescent carbon dots (CDs) from waste materials gains much attention in the current scenario. We have converted waste expanded polystyrene (EPS), a nonbiodegradable environmental pollutant, into multifunctionalized fluorescent CDs. This can be a good scaling up approach for the large-scale synthesis of nitrogen-doped CDs with a high photoluminescence (PL) quantum yield (QY) of The as prepared CDs exhibit excellent water solubility and a longer PL lifetime (in nanoseconds). They also possess excellent photo stability, low cytotoxicity, and stable luminescence QY in different solution environments. Selective and sensitive detection of Au3+ ions is demonstrated using these CDs as fluorescence probes, and a LOD of 53 nM is achieved. A detailed investigation revealed that the observed PL quenching is due to coordination-induced aggregation caused PL quenching mechanism.
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