Reversible Luminescence Photoswitching of Colloidal CsPbBr3 Nanocrystals Hybridized with a Diarylethene Photoswitch,ACS Materials Letters

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Reversible Luminescence Photoswitching of Colloidal CsPbBr3 Nanocrystals Hybridized with a Diarylethene Photoswitch
ACS Materials Letters ( IF 9.6 ) Pub Date : 2020-05-27 , DOI: 10.1021/acsmaterialslett.0c00131
Ashkan Mokhtar ₁ , Ryuki Morinaga ₁ , Yuji Akaishi ₁ , Manami Shimoyoshi ₁ , Sunnam Kim ₁ , Seiji Kurihara ₁ , Tetsuya Kida ₁ , Tuyoshi Fukaminato ₁

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Perovskite lead halide quantum dots (QDs) have attracted much attention because of their excellent optical properties such as high photoluminescence (PL) quantum yields, narrow full width at half maximum (FWHM), and tunability of emission color. The application of such materials in optical memories and bioimaging requires a reversible PL switching property. Here we report a reversible luminescence photoswitching of QDs hybridized with an organic photochromic diarylethene (DAE) photoswitch. A DAE derivative having triethoxysilane (TEOS) was synthesized to add the luminescence-photoswitching property and to stabilize the perovskite QDs by surface coverage. Such luminescent photoswitchable QD systems have great potential for application in various optical devices and luminescence probes for microscopic imaging.

中文翻译：

与二芳基乙烯光开关杂交的胶体CsPbBr ₃纳米晶体的可逆发光光开关。

钙钛矿卤化铅量子点（QDs）由于其出色的光学特性（例如高的光致发光（PL）量子产率，半峰全宽（FWHM）狭窄以及发射颜色的可调性）而备受关注。这种材料在光学存储器和生物成像中的应用需要可逆的PL转换特性。在这里，我们报告与有机光致变色二芳基乙烯（DAE）光开关杂交的QD的可逆发光光开关。合成具有三乙氧基硅烷（TEOS）的DAE衍生物，以增加发光-光开关性能并通过表面覆盖来稳定钙钛矿QD。这种发光的光开关QD系统具有巨大的潜力，可用于各种光学装置和用于显微成像的发光探针。

更新日期：2020-07-06

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