Photo-controlled fluorescent switches based on Si@ZnO quantum dots and diarylethenes for bioimaging and anti-counterfeiting

IF 4.1 3区化学 Q2 CHEMISTRY, PHYSICAL

Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2024-11-27 DOI:10.1016/j.jphotochem.2024.116179

Hengju Zhou , Xinhuan Ma , Jie Hu , Kefan Ning , Shiqiang Cui , Shouzhi Pu

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引用次数: 0

Abstract

The regulation of fluorescence emission of quantum dots by photochromic molecules has received considerable attention. However, the effects of the structure of photochromic compounds on their properties still need to be further investigated. Herein, two photo-controlled fluorescent switches were constructed with Si@ZnO quantum dots and two photochromic diarylethenes, respectively. In these two fluorescent switches, the diarylethenes could be transformed between open-ring state and closed-ring state upon irradiation with UV/vis lights, resulting in the fluorescence of the Si@ZnO switched between “ON” and “OFF”. The fluorescence modulation efficiencies of the two fluorescent switches were measured to be 91.5% and 88.7%, respectively. The effects of the structure of diarylethenes on the light response times, fluorescence lifetimes, and fatigue resistance were also studied. The mechanism of the fluorescent switching could be ascribed to the fluorescence resonance energy transfer (FRET) with Si@ZnO quantum dots as energy donors and diarylethenes in closed-ring state as energy acceptors. Furthermore, the prepared fluorescent switches were applied in bioimaging and anti-counterfeiting successfully.

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来源期刊

Journal of Photochemistry and Photobiology A-chemistry 化学-物理化学

CiteScore

7.90

自引率

7.00%

发文量

580

审稿时长

48 days

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.