Rotational diffusion of dyes in solvents of low viscosity from transient-dichroism experiments
โ Scribed by A. Von Jena; H.E. Lessing
- Book ID
- 103020407
- Publisher
- Elsevier Science
- Year
- 1981
- Tongue
- English
- Weight
- 578 KB
- Volume
- 78
- Category
- Article
- ISSN
- 0009-2614
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โฆ Synopsis
Rotational dtifuslon dsta from pulsed laser expenments are presented for d)e molscuks dtssolved in alcohols and nonalcohols Cresyl vloler and iluorescetn both elhiitt strong dependence oi the rotatIonA motton upon solvent molecuku structure In complete contran the roratloml dtifuslon of the oblong d>es p)iomne G and acndlne orange do not rereal any speL*ic solute-solrent mtersctton Volum+ 78. number 1 CHEhIICAL PHYSICS LETTERS
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The picosecond transient grating technique has been used to study the rotational reorientation of CGo in various solvents: in toluene 7 + 1.5 ps, o-dichlorobenzene 10.3 f 1.5 ps, o-xylene 13 f 2 ps and in decalin 3.5 + I .5 ps. The data obtained cannot be described by hydrodynamic Debye theory. Roug
The ground-stale recovery. ercikd-smle absorprion and sumula~ed emissmn gain temporal profiles or crystal violet have been mc;Lsured in a series of normal alcohol solutions The fluores=nce lime has been round 10 be Taster than Ihe excited-slalc lilclime in all the solvenfi sudred. A hear viscosrty d