Clustering-triggered emission of carboxymethyl β-cyclodextrin powder and tablet.

IF 3 4区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

ChemPlusChem Pub Date : 2025-05-13 DOI:10.1002/cplu.202500230

Xintong Li, Haiyan Xu, Hongyan Zhao, Feng Jin, Xiangxi Zhang, Qing Zhou

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引用次数: 0

Abstract

Nonconventional luminogens have great potential applications in fields like cell imaging and anti-counterfeiting encryption. But so far, the photoluminescence quantum yield (PLQY) of most these solids is still relatively low and the persistent room temperature phosphorescence (p-RTP) emission is relatively weak. To improve their PLQY and p-RTP, pressing the powder into tablets has been preliminarily proven to be an effective method, but the specific mechanism has not been fully elucidated yet. Here, carboxymethyl β-cyclodextrin (CM-β-CD) has been chosen as the representative to solve the problem. The results showed that the PLQY and p-RTP lifetimes of the tablet of CM-β-CD were improved compared to the powder. By the mechanism of clustering-triggered emission (CTE) and average packing density-promoted emission (PDE) mechanism, it has been demonstrated that the enhanced molecular interactions after compression is the key reason, which resulting in the formation of cluster emission centers with stronger emission capabilities. CM-β-CD has been proven to have excellent cell imaging and anti-counterfeiting functions.

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羧甲基β-环糊精粉剂和片剂的聚簇触发发射。

非常规发光光源在细胞成像、防伪加密等领域具有很大的应用潜力。但到目前为止，大多数固体的光致发光量子产率（PLQY）仍然较低，持续室温磷光（p-RTP）发射相对较弱。为了提高其PLQY和p-RTP，将粉末压成片剂已被初步证实是一种有效的方法，但具体机制尚未完全阐明。本文选择羧甲基β-环糊精（CM-β-CD）作为代表来解决这一问题。结果表明，与粉末相比，CM-β-CD片剂的PLQY和p-RTP寿命均有提高。通过簇致发射（CTE）机制和平均堆积密度促发射（PDE）机制，论证了压缩后分子间相互作用增强是形成具有较强发射能力的簇致发射中心的关键原因。CM-β-CD已被证明具有优异的细胞成像和防伪功能。

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

ChemPlusChem CHEMISTRY, MULTIDISCIPLINARY-

CiteScore

5.90

自引率

0.00%

发文量

200

审稿时长

1 months

期刊介绍： ChemPlusChem is a peer-reviewed, general chemistry journal that brings readers the very best in multidisciplinary research centering on chemistry. It is published on behalf of Chemistry Europe, an association of 16 European chemical societies. Fully comprehensive in its scope, ChemPlusChem publishes articles covering new results from at least two different aspects (subfields) of chemistry or one of chemistry and one of another scientific discipline (one chemistry topic plus another one, hence the title ChemPlusChem). All suitable submissions undergo balanced peer review by experts in the field to ensure the highest quality, originality, relevance, significance, and validity.