The electronic absorption spectra of nine substituted phenols

A new technique—photoacoustic spectroscopy (PAS)—is used for the first time to record the u.v.-vis spectra of nine substituted phenols. The π-π* electronic transitions analogous to benzene first primary and secondary transitions could be detected from the PAS spectra in comparison with the u.v. solu...

Full description

Saved in:
Bibliographic Details
Published in:Spectrochimica acta. Part A: Molecular spectroscopy 1988, Vol.44 (1), p.69-91
Main Authors: Sundar, N.Syam, Santhamma, C.
Format: Article
Language:English
Subjects:
Atomic and molecular physics
Exact sciences and technology
Molecular properties and interactions with photons
Molecular spectra
Physics
Ultraviolet spectra
Visible spectra
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A new technique—photoacoustic spectroscopy (PAS)—is used for the first time to record the u.v.-vis spectra of nine substituted phenols. The π-π* electronic transitions analogous to benzene first primary and secondary transitions could be detected from the PAS spectra in comparison with the u.v. solution and vapour phase spectra recorded by conventional methods. Detection of singlet → triplet absorptions from the PAS spectra, with significant intensity, is considered to be an important feature which transitions are in general either not observed or observed with weak intensity, by conventional methods. The analyses show that a few excited state combinations observed in the u.v.-vis PAS spectra compare well with such combinations in the ground state observed in the near i.r. PAS spectra of the molecules.
ISSN:0584-8539
DOI:10.1016/0584-8539(88)80263-0