TRIPLET-TRIPLET SEPCTROSCOPY IN THE INFRARTED

Loading...
Thumbnail Image

Date

1981

Journal Title

Journal ISSN

Volume Title

Publisher

Ohio State University

Research Projects

Organizational Units

Journal Issue

Abstract

We have employed a Fourier Transform infrared Spectrometer to examine the T-T absorption spectrum of phenanthrene in PMMA at $15^{\circ} K$ in the near IR and viaible $(5000 ~~\mbox{cm}^{-1}$ to $23000 ~~\mbox{cm}^{-1})$ using CW excitation. T-T bands previously $reported^{1}$ in the $10000-230000 cm^{-1}$ range have been confirmed. However, no bands were observed in the 5000 to $100000 cm^{-1}$ range. From our S/N measurements in this region we conservationvely estaimate a minimum detectable c of 50 $mole^{-1}$ $cm^{-1}$. We are presently investigating the $400-5000 cm^{-1}$ region in $N_{2}$ matrices. This preliminary work demonstrates the feasibility of using the FT technique to observe absorption spectra of excited triplet species in the infrared and visible regions.

Description

$^{1a.}$ D.S. McClure, J. Chem. Phys. 19. 670 (1951). $^{b.}$B. Henry and M. Kasha, J. chem. Phys. 47, 3319 (1967).
Author Institution:

Keywords

Citation