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Optical spectroscopic study of the domain structure of triclinic p-terphenyl

✍ Scribed by Camilo de La Riva; Carola Kryschi; H.Peter Trommsdorff

Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
559 KB
Volume
227
Category
Article
ISSN
0009-2614

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✦ Synopsis

The relative intensities, at 4.2 K, of fluorescence lines attributed to tetracene guests in different sites of a p-terphenyl host crystal are shown to depend on the rate of cooling of the crystal between 240 and 140 K across the disorder-order phase transition. This observation reflects the kinetics of the formation of the domain structure in the low-temperature phase, which affects the distribution of guest molecules located within domains and within domains boundaries.

πŸ“œ SIMILAR VOLUMES

UV Absorption study of the phase transit
UV Absorption study of the phase transition in p-terphenyl crystal
✍ Nobuko I. Wakayama; Sanae Matsuzaki; Masagi Mizuno πŸ“‚ Article πŸ“… 1980 πŸ› Elsevier Science 🌐 English βš– 247 KB

The UV absorption spectrum of a TP smgle crystal IS measured between 297 and 77 K. The UV spectrum shifts to hyhcr encgy as the temperature falls. The temperature dependence of the UV absorption spectrum mdrcates that a disphcwe transltlon occurs rather than an order-disorder one III a TP crystal.