Studies on the spectroscopic behavior of cryptotanshinone, tanshinone IIA, and tanshinone I.
Spectrochim Acta A Mol Biomol Spectrosc
; 60(4): 751-6, 2004 Mar.
Article
in En
| MEDLINE
| ID: mdl-15036084
ABSTRACT
A comparative study on the spectroscopic behavior of cryptotanshinone (CTan), tanshinone IIA (Tan IIA), and tanshinone I (Tan I) has been investigated, including UV-Vis absorption, low temperature phosphorescence (LTP), low temperature fluorescence (LTF), paper substrate-room temperature phosphorescence (PS-RTP), paper substrate-room temperature fluorescence (PS-RTF) and fluorescence in liquid (LF). The effect of pH on the luminescence intensity is discussed. Lifetime and polarization of the LTP and RTP have been examined with phosphorescence lifetime in the range of 0.6-0.9s and polarization in the range of 0.10-0.27. Analytical characteristics of LF, PS-RTF and PS-RTP of CTan, Tan IIA, and Tan I have been studied.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Phenanthrenes
/
Spectrometry, Fluorescence
/
Spectrophotometry
Type of study:
Prognostic_studies
Language:
En
Journal:
Spectrochim Acta A Mol Biomol Spectrosc
Journal subject:
BIOLOGIA MOLECULAR
Year:
2004
Type:
Article