## Abstract Several aromatic compounds were added to lowβdensity polyethylene to determine their effects on the photodegradation of polyethylene. It was shown that some aromatic compounds indeed sensitize the hydrogen abstraction of the allylic hydrogen of unsaturated groups contained in polyethyle
Studying dynamic process of photosensitization by ESR method
β Scribed by Hongyu Zhang; Hongxia Zhao; Zhiyi Zhang
- Book ID
- 105640509
- Publisher
- Science in China Press (SCP)
- Year
- 1997
- Tongue
- English
- Weight
- 390 KB
- Volume
- 40
- Category
- Article
- ISSN
- 1674-7305
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The spin-polarized excited triplet state of stilbene formed by the photosensitization in a mice&u aggregate, which was employed as an efficient reaction field, has been detected by a time-resolved ESR technique. Both trans-and cis-stilbene provided triplet states having nearly identical zfs constant
The gas-phase ESR technique has been used to study the xenon-photosensitization of hydrogen. The ESR spectrum of atomic hydrogen was observed when the mixtures of xenon and hydrogen were irradiated by the xenon resonance line (147 nm). The results show that photosensitized decomposition of hydrogen
The excited triplet states of 1,3-cyclodienes produced by photosensitization are studied by time-resolved ESR at 77 K. The zerofield splitting (ZFS) constants of 1,3-cyclodienes are influenced by the change of the molecular framework. Simple Hiickel MO calculation provides qualitative aspects of ZFS