of.reIative quantum yields of pkosphorescene have been made for naphthalene versus perdeuteranaphthalenc and for toluene versus perdeutcrotoluene, all contained in argon crystds at 20ยฐK. In combination with tripIet lifetime measurements these quantum yield ratios give the ratios of radiative tripfet
The influence of iodide ions on the radiative and radiationless decay of the triplet state of aromatic hydrocarbons
โ Scribed by Jan Najbar; Janina Rodakiewicz-Nowak
- Publisher
- Elsevier Science
- Year
- 1978
- Tongue
- English
- Weight
- 395 KB
- Volume
- 58
- Category
- Article
- ISSN
- 0009-2614
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๐ SIMILAR VOLUMES
It is shown that in sromntic hydrocsrbons the ISC rate constants (7';-S0) ;?re governed by HT vibronic coupling. Some established rules for deciding between different coupling mechanisms are proved to be invalid. Application to naphthalene yields excellent agreement \iih esperimcnta! results.
The cffcct ofdcutcratlon in slowmg the radtationlesc decay of the triplet state of several porphyrin free bxxs is shown to depend critically on the position of deutcration. Deuteration of the N-II positions is one order of magnttude more effective per bond than dcuterdtlon of the rmg pocitions.
From 8r1 analysis of the internal rate pamnetffs of the pyrene excimer in soWian in propyLneglym1, isopro-pano1 and other solvents it is concluded that fi) fhe radiitire transition rate (kg&, norm&z& to a medium of n=1, is independent of the solvent, (iii the temperatu&ndependent radiafionIess kansi