Journal
JOURNAL OF FLUORESCENCE
Volume 31, Issue 5, Pages 1417-1424Publisher
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s10895-021-02773-6
Keywords
Phenanthrene; Zeolite; Fluorescence; Lifetimes; Optical microscopy
Funding
- Sao Paulo Research Foundation (FAPESP) [2021/01718-9, 17660-7/2018]
- National Council for Scientific and Technological Development (CNPq) grant [303997/2017-6]
- INCT-Catalysis/CNPq grant [444061/2018-5]
- Coordination of Superior Level Staff Improvement (CAPES) [8887.334692/2019]
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Two reactive phenanthrene derivatives were synthesized and used as fluorescent markers in fluorescence microscopy. These derivatives labeled silane modified Zeolite allowed good imaging resolution and spectroscopy measurements, with advantages in easy signal separation in confocal laser fluorescence microscopy. This also opens up the possibility of visualizing Zeolite-based materials commonly used as catalysts in thermal and photochemical reactions.
Two reactive phenanthrene derivatives, 4-(1H phenanthrol [9,10-d] imidazole-2-yl) benzaldehyde (PIB) and 6,9-dimethoxyphenanthro[9,10-c]furan-1,3-dione (PA) with high fluorescent quantum yields were prepared and used as fluorescent marker in fluorescence microscopy. In particular, silane modified mu mZeolite-L containing amino group (-NH2) in the surface were labeled with the phenanthrene derivatives allowing good imaging resolution and spectroscopy measurements. The presence of a large Stokes shift of the probes due to their intramolecular charge-transfer character gives an advantage of the compounds in confocal laser fluorescence microscopy due to easy signal separation in excitation and emission wavelengths. On the other hand, these results open up the possibility of using these probes for visualization of Zeolite-based materials commonly used as catalysts in thermal and photochemical reactions.
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