4.7 Article

Activating room-temperature phosphorescence of 1,8-naphthalimide by doping into aromatic dicarboxylic acids

期刊

CHEMICAL COMMUNICATIONS
卷 58, 期 22, 页码 3641-3644

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ROYAL SOC CHEMISTRY
DOI: 10.1039/d2cc00474g

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  1. LiaoNing Revitalization Talents Program [XLYC1902111]
  2. Key projects of the Department of Education, Liaoning Province [LZD202005]

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The room-temperature phosphorescence of 1,8-naphthalimide can be activated by doping it into aromatic dicarboxylic acids. The doping system generates a bright yellow afterglow, and a phosphorescent lifetime of 403 ms and a quantum yield of 4.2% can be achieved with 0.02 mol% doping content of 1,8-naphthalimide and isophthalic acid. Both energy transfer from the host to the guest and the formation of an intermolecular hydrogen-bonding network contribute to the efficient and long-lived phosphorescence observed.
The room-temperature phosphorescence of 1,8-naphthalimide was activated by doping it into aromatic dicarboxylic acids. The doping system gives a bright yellow afterglow and 1,8-naphthalimide and isophthalic acid (0.02 mol% doping content) afford a phosphorescent lifetime of 403 ms and a quantum yield of 4.2%. Both energy transfer from the host to the guest and the formation of an intermolecular hydrogen-bonding network are responsible for the observed efficient and long-lived phosphorescence.

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