An Efficient All-Visible Light-Activated Photoswitches Based on Diarylethenes and CdS Quantum Dots

IF 7.6 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Chemical Science Pub Date : 2024-11-13 DOI:10.1039/d4sc06110a

Kezhou Chen, Jiayi Liu, Joakim Andréasson, Bo Albinsson, Tiegen Liu, Lili Hou

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引用次数: 0

Abstract

All-visible light-activated diarylethene (DAE) photoswitches are highly attractive for applications in smart photoresponsive materials. Photocyclization of DAE via the low-lying excited triplet state through triplet energy transfer (TET) from a sensitizer has been proven as an effective approach for the realization of this scheme. However, TET process is sensitive to oxygen and typically requires more than one sensitizer per photoswitch to facilitate sensitized photocyclization. Herein, we present a bi-component system comprising carboxylic acid-functionalized DAEs and CdS quantum dots (QDs) to achieve all-visible light-activated photoswithing. Due to the large surface area-to-volume ratio of CdS QDs and surface anchored DAEs, one CdS QD can activate at least 18 DAE molecules in the solution without oxygen exclusion. The efficiency of photocyclization of DAEs under visible light irradiation through energy transfer from CdS QDs is nearly comparable to direct UV light irradiation. Moreover, our strategy is adaptable to solid-state performance exposed in the air, enabling reversible writing and erasing of color and patterns by adjusting irradiation wavelengths in the visible region.

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基于二月嫂和 CdS 量子点的高效全可见光激活型光电开关

全可见光激活的二乙烯（DAE）光开关在智能光致发光材料的应用中极具吸引力。通过敏化剂的三重态能量转移（TET），DAE 通过低洼激发的三重态进行光环化，已被证明是实现这一方案的有效方法。然而，三重态能量转移过程对氧气很敏感，通常每个光开关需要一个以上的敏化剂才能促进敏化光环化。在此，我们提出了一种由羧酸官能化 DAEs 和 CdS 量子点（QDs）组成的双组分系统，以实现全可见光激活的光合作用。由于 CdS QDs 和表面锚定 DAEs 的表面积与体积比很大，因此一个 CdS QD 可以激活溶液中至少 18 个 DAE 分子，而不会产生排氧现象。在可见光照射下，通过 CdS QD 的能量转移，DAEs 的光环化效率几乎可与直接紫外光照射相媲美。此外，我们的策略还能适应暴露在空气中的固态性能，通过调整可见光区域的照射波长，实现颜色和图案的可逆书写和擦除。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Chemical Science CHEMISTRY, MULTIDISCIPLINARY-

CiteScore

14.40

自引率

4.80%

发文量

1352

审稿时长

2.1 months

期刊介绍： Chemical Science is a journal that encompasses various disciplines within the chemical sciences. Its scope includes publishing ground-breaking research with significant implications for its respective field, as well as appealing to a wider audience in related areas. To be considered for publication, articles must showcase innovative and original advances in their field of study and be presented in a manner that is understandable to scientists from diverse backgrounds. However, the journal generally does not publish highly specialized research.