Abstract
Bright luminescence hybrid halide perovskite nanocrystals (PNCs) as a novel fluorophore class have not been broadly explored in biological sensing. Herein, we synthesized highly fluorescent CsPbBr3 PNCs through the LARP method using oleic acid and oleyl amine as capping ligands. Morphological and optical properties of as-synthesized PNCs were studied using transmission electron microscopy, X-ray diffraction, UV-vis, and emission spectroscopic analysis. Oleic acid- and oleyl amine-capped PNCs are employed for sensitive and selective detection of bilirubin (BR). A panel of characterizations (time-correlated single-photon count spectroscopy and photoluminescence (PL)) was carried out to investigate the detailed sensing study of PNCs-BR composite for quenching the PL emission of CsPbBr3 with BR. It has been noticed that the synthesized nanoparticles are highly capable of detecting BR and thus act as a biological material sensor.
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