Delayed fluorescence of acridine dyes induced by supramolecular assembly of terephthalic acid and melamine

IF 4.3 2区化学 Q1 SPECTROSCOPY Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy Pub Date : 2025-01-31 DOI:10.1016/j.saa.2025.125809

Xiangying Sun , Jianping Zeng , Xiaopeng Wang , Huaiqian Wang

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Abstract

Delayed fluorescence of organic dye materials with visible light excitation has expansive application prospects. Because of the coplanarity of fluorescent dyes and rigid matrix, the reverse cross rate between the systems is slow and the fluorescence life is long. Therefore, once the fluorescent dyes are assembled in the polymer matrix, the delayed fluorescence with strong intensity and long lifetime will be produced. Herein, terephthalic acid (PTA) with melamine (MA) were assembled into the rigid matrix of PTA-MA, delayed fluorescence of acridine dyes induced based on the energy transfer from PTA-MA to acridine dyes. The long afterglow of PTA-MA@AO with about 7 s under the UV light and visible light can be produced. The mechanism of dye delayed fluorescence, and the effects of dye type on optical properties were studied. PTA-MA@acridine dyes with different long afterglow properties were used to anti-counterfeiting applications.

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来源期刊

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 物理-光谱学

CiteScore

8.40

自引率

11.40%

发文量

1364

审稿时长

40 days

期刊介绍： Spectrochimica Acta, Part A: Molecular and Biomolecular Spectroscopy (SAA) is an interdisciplinary journal which spans from basic to applied aspects of optical spectroscopy in chemistry, medicine, biology, and materials science. The journal publishes original scientific papers that feature high-quality spectroscopic data and analysis. From the broad range of optical spectroscopies, the emphasis is on electronic, vibrational or rotational spectra of molecules, rather than on spectroscopy based on magnetic moments. Criteria for publication in SAA are novelty, uniqueness, and outstanding quality. Routine applications of spectroscopic techniques and computational methods are not appropriate. Topics of particular interest of Spectrochimica Acta Part A include, but are not limited to: Spectroscopy and dynamics of bioanalytical, biomedical, environmental, and atmospheric sciences, Novel experimental techniques or instrumentation for molecular spectroscopy, Novel theoretical and computational methods, Novel applications in photochemistry and photobiology, Novel interpretational approaches as well as advances in data analysis based on electronic or vibrational spectroscopy.