The photoexcited triplet state as a probe of dynamics and phase memory in a multiphase liquid crystal : time-resolved electron paramagnetic resonance spectroscopy

Differences between mesophases and hysteresis effects can be examined by electron paramagnetic resonance (EPR) detection of light-induced transient triplets oriented in liquid crystals (LC). Time-resolved EPR spectroscopy (direct detection) has been applied to study the photoexcited triplet state dy...

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Veröffentlicht in:	The Journal of chemical physics 1991-12, Vol.95 (11), p.7907-7916
Hauptverfasser:	REGEV, A, GALILI, T, LEVANON, H
Format:	Artikel
Sprache:	eng
Schlagworte:	Atomic and molecular physics Electron resonance and relaxation Exact sciences and technology Molecular properties and interactions with photons Physics
Online-Zugang:	Volltext
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Beschreibung
Zusammenfassung:	Differences between mesophases and hysteresis effects can be examined by electron paramagnetic resonance (EPR) detection of light-induced transient triplets oriented in liquid crystals (LC). Time-resolved EPR spectroscopy (direct detection) has been applied to study the photoexcited triplet state dynamics of tetraphenylporphyrin (free-base) oriented in a multiphase LC, ZLI-1167, having a negative anisotropic susceptibility, Δχ
ISSN:	0021-9606 1089-7690
DOI:	10.1063/1.461319