Accession Number : AD0639947

Title :   RESEARCH ON TRIPLET STATES AND PHOTOCHROMISM.

Descriptive Note : Semi-annual research rept. no. 1, 1 Dec 61-31 May 62,

Corporate Author : TRW SPACE TECHNOLOGY LABS REDONDO BEACH CALIF

Personal Author(s) : WINDSOR,Maurice W.

Report Date : 31 MAY 1962

Pagination or Media Count : 47

Abstract : A flash photolysis apparatus with spectrographic recording was assembled. Using carefully degassed solutions, T-T absorption spectra have been recorded for several compounds out as far as 9000A. Several new bands in the near infra-red were discovered. Available data on spectra, extinction coefficients and lifetimes were collected from the literature and tabulated. Several compounds were investigated for phosphorescence activity in organic glasses at liquid nitrogen temperatures. A technique was developed for preparing optical quality plastic samples in which triplet state compounds are incorporated. The plastic samples can be machine to desired shapes and polished to optical standards. A theoretical study of radiationless transitions in complex molecules commenced. Application of the theory in a very elementary form yields the correct relative rates for the three most important intramolecular energy transfer processes in complex molecules. (Author)

Descriptors :   (*OPTICAL FILTERS, PHOTOCHROMISM), (*PHOTOCHROMISM, *MOLECULAR ENERGY LEVELS), PHOTOLYSIS, INSTRUMENTATION, INFRARED SPECTROSCOPY, ABSORPTION SPECTRA, PHOSPHORESCENCE, GLASS, PLASTICS, OPTICAL MATERIALS, SPECTROPHOTOMETERS, ELECTRON TRANSITIONS, FLASHBLINDNESS, MATERIALS

Subject Categories : Radiation and Nuclear Chemistry
      Protective Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE