Fluorescence quenching mechanism of B,N-CDs for vitamin B12 detection (IMAGE)

Biomedical Analysis

Fluorescence quenching mechanism of B,N-CDs for vitamin B12 detection

Caption

Mechanistic investigation of vitamin B12-induced fluorescence quenching of B,N-CDs. (A) Stern–Volmer plots at different temperatures; (B) fluorescence decay spectra of B,N-CDs before and after the addition of vitamin B12; (C) zeta potential and (D) dynamic light scattering (DLS) measurements of B,N-CDs, vitamin B12, and their combined system. The unchanged fluorescence lifetime together with the temperature-dependent Stern–Volmer behavior supports a static fluorescence-quenching process associated with the interaction between B,N-CDs and vitamin B12.

Credit

Mengnan Wu, Xiaoshuang Wang, Lijun Wang, Ruiyang Ji, Qiaoli Yue

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CC BY-NC

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