Evaluation of the Photophysical Properties of Two Scintillators: Crystalline Para-terphenyl and Plastic-Embedded 2,5-Diphenyloxazole Dye (EJ-276) at Room and Cryogenic Temperatures
Abstract:The photophysical characterization of two dyes used as
scintillators,
crystalline para-terphenyl and EJ-276, a plastic
heavily doped with 2,5-diphenyloxazole (DPO), was investigated with
steady-state absorption, time-resolved emission, and transient absorption
at room and cryogenic temperatures. Application of time-gated emission
spectroscopy allowed for the measurement of phosphorescence spectra
and their temporal dynamics. The photophysical properties of plastic-embedded
DPO are not substantially altered com… Show more
“…As a triplet sensitizer, we chose Ir(ppy) 3, which has a suitable T 1 energy level ( T 1 = 2.48 eV) 42 for efficient triplet energy transfer to TP crystals ( T 1 = 2.15 eV). 43 …”
Section: Resultsmentioning
confidence: 99%
“…As a triplet sensitizer, we chose Ir(ppy) 3, which has a suitable T 1 energy level (T 1 = 2.48 eV) 42 for efficient triplet energy transfer to TP crystals (T 1 = 2.15 eV). 43 Dexter energy transfer requires close contact between Ir(ppy) 3 and TP molecules. Since TP is soluble in common organic solvents, the monolithic structure of TP-COMs is easily lost by organic solvents.…”
Section: Dexter Energy Transfer At the Pore Surface Of Comsmentioning
Crystalline organic monoliths (COMs) are a novel class of monolithic materials with a bicontinuous porous structure composed of photo-functional molecular crystals.
“…As a triplet sensitizer, we chose Ir(ppy) 3, which has a suitable T 1 energy level ( T 1 = 2.48 eV) 42 for efficient triplet energy transfer to TP crystals ( T 1 = 2.15 eV). 43 …”
Section: Resultsmentioning
confidence: 99%
“…As a triplet sensitizer, we chose Ir(ppy) 3, which has a suitable T 1 energy level (T 1 = 2.48 eV) 42 for efficient triplet energy transfer to TP crystals (T 1 = 2.15 eV). 43 Dexter energy transfer requires close contact between Ir(ppy) 3 and TP molecules. Since TP is soluble in common organic solvents, the monolithic structure of TP-COMs is easily lost by organic solvents.…”
Section: Dexter Energy Transfer At the Pore Surface Of Comsmentioning
Crystalline organic monoliths (COMs) are a novel class of monolithic materials with a bicontinuous porous structure composed of photo-functional molecular crystals.
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