Photoexcited triplet state of porphycene, a novel porphin isomer. Time-resolved electron paramagentic resonance spectroscopy

Journal Article · Thu May 21 04:00:00 EDT 1987 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j100295a005· OSTI ID:6508825

Ofir, H; Regev, A; Levanon, H; Vogel, E; Koecher, M; Balci, M

The photoexcited triplet state of free-base porphycene and its tetra-n-propyl derivatives, oriented in a uniaxial liquid crystal, was investigated by laser photoexcitation - EPR diode detection. By monitoring the transient behavior of the magnetization, time-dependent CW spectra were obtained and examined. The results yield (a) positive values for the zero-field splitting parameters D; (b) the location of the fine structure tensor axes in the molecular frame (x and y lie in-plane and cross the bridges between the pyrrole rings, and z is perpendicular to the porphycene plane.

• Research Organization: Hebrew Univ., Jerusalem, Israel
• OSTI ID: 6508825
• Journal Information: J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 91:11; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
140505 -- Solar Energy Conversion-- Photochemical
Photobiological
& Thermochemical Conversion-- (1980-)
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400500* -- Photochemistry
CARBOXYLIC ACIDS
CHEMISTRY
DATA
ELECTRON SPIN RESONANCE
ENERGY LEVELS
EXCITED STATES
EXPERIMENTAL DATA
FINE STRUCTURE
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
INFORMATION
LASERS
MAGNETIC RESONANCE
MULTIPLETS
NEODYMIUM LASERS
NUMERICAL DATA
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PHOTOCHEMISTRY
PORPHYRINS
RESONANCE
SOLID STATE LASERS
TIME DEPENDENCE
TRIPLETS