TITLE

Photochemical hole burning of tetraphenylporphin in phenoxy resin

AUTHOR(S)
Horie, Kazuyuki; Mori, Takeo; Naito, Takuya; Mita, Itaru
PUB. DATE
September 1988
SOURCE
Applied Physics Letters;9/12/1988, Vol. 53 Issue 11, p935
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The efficiency of hole formation and the thermal stability of holes burnt at 42 K with 0.36 or 3.6 mW/cm² helium-neon laser are studied for tetraphenylporphin (TPP) in phenoxy resin (aromatic polyhydroxyether, PhR) as well as in poly (methyl methacrytate) (PMMA). The efficiency of hole formation for TPP in PhR at 4.2 and 30 K is much higher than that in PMMA and the hole depth reaches more than 30% of initial absorbance. The purification by reprecipitation of the matrix polymer and the annealing of the sample films improve the efficiency. Our system of TPP in PhR is the first system in which the hole was detected even at liquid-nitrogen temperature (80 K) after 30 rain annealing at the temperature. Partial recovery of the hole cooled again to 4.2 K was observed after holding the sample for 30 mtn at 120 K.
ACCESSION #
9828032

 

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