POLYCYCLIC AROMATIC NITROGEN-HETEROCYCLES .2. EFFECT OF SOLVENT POLARITY ON THE FLUORESCENCE EMISSION FINE-STRUCTURE OF 3 AZAPYRENE COMPOUNDS

被引：27
作者：
TUCKER, SA
ACREE, WE
TANGA, MJ
机构：
[1] UNIV N TEXAS,DEPT CHEM,DENTON,TX 76203
[2] SRI INT,MENLO PK,CA 94025
来源：
APPLIED SPECTROSCOPY | 1991年 / 45卷 / 01期
关键词：
FLUORESCENCE; MOLECULAR STRUCTURE;
D O I：
10.1366/0003702914337948
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
Fluorescence emission spectra are reported for 1-azapyrene, 2-azapyrene, and 4-azapyrene dissolved in several nonelectrolyte solvents of varying polarity. Results of these measurements show that all three solutes are unsuitable for solvent polarity probes, as the calculated emission intensity ratios remain nearly constant, irrespective of solvent polarity. Abnormal fluorescence behavior was also noted for 1-azapyrene and 2-azapyrene dissolved in several chlorinated solvents. Time-dependent fluorescence spectra for 1-azapyrene in dichloromethane suggest a possible photochemical reaction between the PANH solute and chlorinated solvent molecule.
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页码：57 / 60
页数：4
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