Kartik Pankajbhai Makwana , Madhura Pradeep Deshpande , Naved I. Malek , Tae Jung Park , Suresh Kumar Kailasa
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引用次数: 0
Abstract
In this study, blue-emitting LaSrO3 perovskite quantum dots (PQDs) were synthesized using a microwave-assisted sol–gel method. The as-prepared LaSrO3 PQDs acted as a nano-fluorescent probe for detection of two biomarkers: bilirubin (BR) and epinephrine (EP). The fluorescence spectra of LaSrO3 PQDs showed λEm/Ex at 421/336 nm, displaying quantum yield of 36.91 %. Based on the remarkable fluorescence properties of LaSrO3 PQDs, fluorescence sensing studies were performed for biomarkers assay. The emission spectral results of LaSrO3 PQDs displayed remarkable fluorescence quenching by BR and EP via Förster resonance energy transfer and inner filter effect, respectively. The detection limits were 10.48 and 17.04 nM for BR and EP, respectively. The fluorescence quenching mechanisms were discussed in detail by various analytical techniques (fluorescence, UV–visible absorption, transmission electron microscopy, Fourier transform infrared, and zeta potential). In addition, LaSrO3 PQDs-based fluorescence sensing approach was successfully applied to quantitative assays of EP in pharmaceutical samples and of BR in biofluids with satisfactory recovery results.
期刊介绍：
JPPA publishes the results of fundamental studies on all aspects of chemical phenomena induced by interactions between light and molecules/matter of all kinds.
All systems capable of being described at the molecular or integrated multimolecular level are appropriate for the journal. This includes all molecular chemical species as well as biomolecular, supramolecular, polymer and other macromolecular systems, as well as solid state photochemistry. In addition, the journal publishes studies of semiconductor and other photoactive organic and inorganic materials, photocatalysis (organic, inorganic, supramolecular and superconductor).
The scope includes condensed and gas phase photochemistry, as well as synchrotron radiation chemistry. A broad range of processes and techniques in photochemistry are covered such as light induced energy, electron and proton transfer; nonlinear photochemical behavior; mechanistic investigation of photochemical reactions and identification of the products of photochemical reactions; quantum yield determinations and measurements of rate constants for primary and secondary photochemical processes; steady-state and time-resolved emission, ultrafast spectroscopic methods, single molecule spectroscopy, time resolved X-ray diffraction, luminescence microscopy, and scattering spectroscopy applied to photochemistry. Papers in emerging and applied areas such as luminescent sensors, electroluminescence, solar energy conversion, atmospheric photochemistry, environmental remediation, and related photocatalytic chemistry are also welcome.
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