Journal ArticleDOI
Investigation of the lowest triplet state of free base porphin by microwave induced changes in its fluorescence
TLDR
The zero-field splitting of the non-phosphorescent lowest triplet state of free base porphin is measured by observing microwave induced changes in the fluorescence of this molecule as a guest in a Shpolskii-matrix of n -octane at 4.2°K.About:
This article is published in Chemical Physics Letters.The article was published on 1973-08-15. It has received 88 citations till now. The article focuses on the topics: Porphin & Triplet state.read more
Citations
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Journal ArticleDOI
TRIPLET STATE OF METALLOPORPHYCENES: ZnPCl, PdPC2, PtPC2, and NiPC2
Moshe Toporowicz,Hanna Ofir,Haim Levanon,Emanuel Vogel,Matthias Koucher,Kakumanu Pramod,Richard W. Fessenden +6 more
TL;DR: In this paper, the triplet EPR line shapes and triplet spin polarization directions were used to detect triplets of ZnPCl, PdPC2 and PtPC2 with triplet lifetimes of 26, 5 and 0.2 µs, respectively.
Book ChapterDOI
Techniques, Theory, and Biological Applications of Optically Detected Magnetic Resonance (ODMR)
TL;DR: The first optically detected triplet-state magnetic resonance (ODMR) was reported in the solid state by as discussed by the authors, where the transition between magnetic sublevels of the lowest triplet state is detected by their effect on some optical property of the sample which is monitored simultaneously.
Journal ArticleDOI
Anisotropy of Light Emission and Absorption by Porphin Molecules in n-Octane Single Crystals
TL;DR: In this article, the Shpolsky method of quasi-line spectraI makes it possible to obtain data on frequencies of vibrations and their activity in vibronic spectra of fluorescence and absorption.
Journal ArticleDOI
The triplet state of magnesiumporphin · ethanol in an n-octane crystal studied by microwave induced changes in the fluorescence intensity
G. Jansen,J.H. van der Waals +1 more
TL;DR: The zero-field splitting of the triplet state of Magnesiumporphin solvated by ethanol is represented by D = 0.035 cm −1 and | E | −1, and the decay rates of the upper two spin components both are found to be about 20 s −1, while that of the bottom component (where the spin lies in the molecular plane) is about 2 s − 1.
References
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Journal ArticleDOI
The lowest triplet state of Zn porphin
TL;DR: In this article, three pairs of microwave transitions with widths of a few MHz are found, all of them corresponding to a decrease in phosphorescence intensity, corresponding to the Shpolskii effect, and it was further established that by pumping either of these transitions a third one can be detected at the difference frequency, so that the order of the levels must be X>Y>Z (or reverse)
Journal ArticleDOI
Optical and Zeeman studies of the first excited singlet state of zinc porphin in a single crystal of n-octane: Evidence for Jahn-Teller instability
TL;DR: In this paper, the absorption and fluorescence spectra of Zn porphin in an n-octane single crystal at 4·2 K are reported in the region between 17 400 and 18 500 cm-1.
Journal ArticleDOI
The lowest triplet state of Zn porphin. II. Investigation of its dynamics by microwave induced delayed phosphorescence
Journal Article
[Study of porphin metal complexes by the method of quasi-linear spectra].
Journal ArticleDOI
Optically Detected Adiabatic Inversion in Phosphorescent Triplet States and the Measurement of Intramolecular Energy Transfer Processes
TL;DR: The theory and observation of microwave induced population inversion within triplet magnetic sublevels in zero field is presented in this paper, where inversion via adiabatic fast passage can be measured quantitatively by changes in triplet phosphorescence and can be accomplished easily and with microwave field strengths even lower than are required for cw saturation.