Journal
CHEMOSENSORS
Volume 4, Issue 1, Pages -Publisher
MDPI
DOI: 10.3390/chemosensors4010005
Keywords
fluorescent probes; amine; fluorescence; imine; aldehyde
Funding
- National Institute of Health [R15 GM-102867, GM-093941]
- Research Foundation of the State University of New York
- National Science Foundation [CHE-0922815]
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Two different classes of fluorescent dyes were prepared as a turn off/on sensor system for aldehydes. Amino derivatives of a boron dipyrromethene (BDP) fluorophore and a xanthene-derived fluorophore (rosamine) were prepared. Model compounds of their product with an aldehyde were prepared using salicylaldehyde. Both amino boron dipyrromethene and rosamine derivatives are almost non-fluorescent in polar and apolar solvent. However, imine formation with salicylaldehyde on each fluorophore increases the fluorescence quantum yield by almost a factor of 10 (from 0.05 to 0.4). These fluorophores are therefore suitable candidates for development of fluorescence-based sensors for aldehydes.
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