Abstract
3-Naphthyl-1-phenyl-5-(5-fluoro-2-nitrophenyl)-2-pyrazoline (NPFP), a fluorogenic probe and its derivative NPFP-Phenylephrine were synthesized and their absorption and fluorescence properties were recorded in solvents of varying polarity. Spectroscopic studies reveal that, the solvatochromic behavior of the compounds depend not only on the polarity but also on the hydrogen-bonding properties of the solvents. The effects of β-cyclodextrin on the fluorescence properties of both compounds were studied. It was found that there is an enhancement in the fluorescence intensity of labeled drug (NPFP-Phenylephrine) in the presence of β-cyclodextrin. In the present study, the molecular motions of NPFP-Phenylephrine embedded in a β-cyclodextrin cavity have been investigated by fluorescence techniques in steady-state and time resolved modes.
| Original language | English |
|---|---|
| Pages (from-to) | 661-671 |
| Number of pages | 11 |
| Journal | Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy |
| Volume | 136 |
| Issue number | PB |
| DOIs | |
| Publication status | Published - Feb 5 2015 |
| Externally published | Yes |
Keywords
- Charge-transfer character
- Fluorescence anisotropy
- Pyrazoline
- Solvent effect
- Synthesis
- β-cyclodextrin
ASJC Scopus subject areas
- Analytical Chemistry
- Atomic and Molecular Physics, and Optics
- Instrumentation
- Spectroscopy