Sensors and Actuators, B: Chemical
Sensors and Actuators, B: Chemical
5 years ago

Tenfold enhancement of fluorescence quantum yield of water soluble silver nanoclusters for nano-molar level glucose sensing and precise determination of blood glucose level

Tenfold enhancement of fluorescence quantum yield of water soluble silver nanoclusters for nano-molar level glucose sensing and precise determination of blood glucose level
Specially designed water soluble fluorescent silver nanoclusters anchored with 3-aminophenyl boronic acid (AgNCs-a-APBA) have been synthesized sonochemically in environmentally benign water medium. The new material (AgNCs-a-APBA) shows tenfold enhancement of fluorescence intensity compared to AgNCs. Fluorescence quenching experiments reveals its precise glucose sensing property up to nano-molar level. The method utilized to check glucose level in human blood sample and the results are compared with conventional data obtained from Glucometer and Colorimetric/Fluorometric Assay kit. The role of APBA in enhancing fluorescence property has been explained. The hydrogen bonding-driven aggregation of APBA with AgNCs and the glucose-triggered disaggregation of the nanoclusters are investigated in details. The synthesized materials are characterized with the help of conventional experimental techniques such as UV–vis, TEM, HR-MS, FTIR, SAED, XRD, DLS and fluorescence measurements.

Publisher URL: www.sciencedirect.com/science

DOI: S0925400517313588

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