Journal
CHEMICAL PHYSICS LETTERS
Volume 425, Issue 1-3, Pages 94-98Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cplett.2006.04.105
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Single terrylene molecules were detected for the first time in 2,3-dimethylnaphthalene crystals. Experiments provided information about the structural dynamics of the crystal over a wide temperature range. Blinking of the fluorescence intensity of terrylene molecules, between 5 and 150 K, was related to dynamics of the methyl groups of the host molecules surrounding the probe. Photo-bleaching of single terrylenes, monitored over the whole temperature range, at temperatures above 220 K was attributed to thermally activated reorientation of the host molecules, already discovered by nuclear magnetic resonance. Photo-bleaching time was too short to detect terrylene molecules at temperatures above 260 K. (c) 2006 Elsevier B.V. All rights reserved.
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