硫氧化态对萘酰亚胺基供体-受体体系光物理性质的影响。

IF 2.8 2区化学 Q3 CHEMISTRY, PHYSICAL

The Journal of Physical Chemistry A Pub Date : 2025-10-15 DOI:10.1021/acs.jpca.5c06126

Andrés R Urdaneta M, Marcelo Puiatti, Gustavo A Pino, Liliana B Jimenez

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引用次数: 0

摘要

本研究探讨了连接萘酰亚胺和对甲氧基苯基单元的NI-SOn-PhOMe （n = 0,1,2）中硫桥的光物理性质与氧化态之间的关系。研究在溶液和固态下进行，并与NI-PhOMe进行比较，NI-PhOMe的两个部分通过碳-碳键直接连接。在硫桥接衍生物中，观察到聚集诱导发射（AIE），其特征受分子间相互作用和形成不溶性聚集物的介质性质的影响。相反，NI-PhOMe表现出供体-受体（D-A）推挽系统典型的传统溶剂化变色。详细分析了硫原子的氧化态对主要性质的影响，包括萘酰亚胺取代引起的D-A特性，以及控制其光物理行为的电荷转移（CT）贡献。

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Influence of Sulfur Oxidation States on the Photophysical Properties of Naphthalimide-Based Donor-Acceptor Systems.

This study explores the correlation between the photophysical properties and the oxidation state of the sulfur bridge in NI-SO_n-PhOMe (n = 0, 1, 2), which connects naphthalimide and p-methoxyphenyl units. The investigations were conducted in solution and in the solid state, with comparisons made to NI-PhOMe, where the two moieties are directly linked via a carbon-carbon bond. In the sulfur-bridged derivatives, aggregation-induced emission (AIE) was observed, the characteristics of which are influenced by intermolecular interactions and the nature of the medium in which insoluble aggregates form. In contrast, NI-PhOMe exhibited conventional solvatochromism typical of donor-acceptor (D-A) push-pull systems. A detailed analysis is presented on the influence of the oxidation state of the sulfur atom on key properties, including the D-A character induced by naphthalimide substitution, as well as the charge transfer (CT) contribution that governs its photophysical behavior.

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来源期刊

The Journal of Physical Chemistry A 化学-物理：原子、分子和化学物理

CiteScore

5.20

自引率

10.30%

发文量

922

审稿时长

1.3 months

期刊介绍： The Journal of Physical Chemistry A is devoted to reporting new and original experimental and theoretical basic research of interest to physical chemists, biophysical chemists, and chemical physicists.