Photoinduced Electron Transfer System from Cesium Lead Bromide Quantum Dots to Naphthalenediimide Supramolecular Polymers.

IF 3.5 3区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Chemistry - An Asian Journal Pub Date : 2024-11-21 DOI:10.1002/asia.202401299

Amrutha Manoj Lena, Mitsuaki Yamauchi, Hideyuki Murakami, Naoki Kubo, Sadahiro Masuo, Naoki Aratani, Hiroko Yamada

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引用次数: 0

Abstract

Supramolecular polymers (SPs) formed via the stacking of π-conjugated molecules are attractive nanomaterials because of their potential optoelectronic properties derived from the non-covalent interaction between the π-skeletons. Especially, SPs possessing naphthalenediimide (NDI) core units can act as superior electron acceptors due to their deep lowest unoccupied molecular orbital (LUMO). Interaction of such SP with electron donors can realize a charge transfer system, but this has not been established. Herein, we report a photoinduced electron transfer system from cesium lead bromide quantum dot (QD) as an electron donor to SP composed of cholesterol-functionalized NDI derivatives. The supramolecular polymerization in a non-polar solvent was analyzed in detail via microscopic and spectroscopic analyses. Upon mixing the SP with QDs, the photoluminescence intensity and lifetime of QDs decreased significantly, indicating efficient photoinduced electron transfer from QD to SP.

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从溴化铯铅量子点到萘二亚胺超分子聚合物的光诱导电子转移系统。

通过π-共轭分子堆叠形成的超分子聚合物（SPs）是一种极具吸引力的纳米材料，因为π-骨架之间的非共价相互作用使其具有潜在的光电特性。特别是具有萘二甲酰亚胺（NDI）核心单元的 SP，由于其具有较深的最低未占分子轨道（LUMO），因此可以充当出色的电子受体。这种 SP 与电子供体的相互作用可以实现电荷转移系统，但这一点尚未得到证实。在此，我们报告了一种从作为电子供体的溴化铯铅量子点（QD）到由胆固醇官能化 NDI 衍生物组成的 SP 的光诱导电子转移系统。通过显微镜和光谱分析，详细分析了在非极性溶剂中的超分子聚合过程。将 SP 与 QDs 混合后，QDs 的光致发光强度和寿命显著降低，这表明从 QD 到 SP 的光诱导电子转移是有效的。

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

Chemistry - An Asian Journal 化学-化学综合

CiteScore

7.00

自引率

2.40%

发文量

535

审稿时长

1.3 months

期刊介绍： Chemistry—An Asian Journal is an international high-impact journal for chemistry in its broadest sense. The journal covers all aspects of chemistry from biochemistry through organic and inorganic chemistry to physical chemistry, including interdisciplinary topics. Chemistry—An Asian Journal publishes Full Papers, Communications, and Focus Reviews. A professional editorial team headed by Dr. Theresa Kueckmann and an Editorial Board (headed by Professor Susumu Kitagawa) ensure the highest quality of the peer-review process, the contents and the production of the journal. Chemistry—An Asian Journal is published on behalf of the Asian Chemical Editorial Society (ACES), an association of numerous Asian chemical societies, and supported by the Gesellschaft Deutscher Chemiker (GDCh, German Chemical Society), ChemPubSoc Europe, and the Federation of Asian Chemical Societies (FACS).