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説明:

Aggregation-induced optical phenomena are emerging as a central theme in modern materials science. In this study, tetracyanoethylene (TCNE) was reacted with and encapsulated by melamine. Crystallization from aqueous tetrahydrofuran solutions containing melamine and TCNE at varying concentrations produced vividly colored crystals with multi-wavelength fluorescence emission. Infrared spectroscopy and mass spectrometry identified these crystals as melamine incorporating trace amounts of 1,1,2,3,3-pentacyanopropenide. Fluorescence excitation–emission mapping revealed the concentration-dependent nature of the emission in both precursor solutions and the resulting crystals. Density functional theory calculations further attributed the multi-wavelength fluorescence to dimeric assemblies of the pentacyanopropenide. These findings demonstrate that encapsulating reactive molecules within crystalline melamine—exemplified here by pentacyanopropenide and its dimer—provides a general strategy for stabilizing otherwise unstable species while enabling unique optical responses.

権利情報:

• cc-by-3.0
  

キーワード: Fuluorescence, time-resolved spectroscopy

刊行年月日: 2025-07-03

出版者: Royal Society of Chemistry (RSC)

掲載誌:

• Materials Advances (ISSN: 26335409) vol. 6 issue. 17 p. 5884-5891

研究助成金:

• Grantová Agentura České Republiky 22-23407S
• Austrian Science Fund PIN9127924
• Ministerstvo Školství, Mládeže a Tělovýchovy V4-Japan/8F21010

原稿種別: 出版者版 (Version of record)

MDR DOI:

公開URL: https://doi.org/10.1039/d5ma00400d

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更新時刻: 2025-12-24 13:47:25 +0900

MDRでの公開時刻: 2025-12-24 16:20:29 +0900