Transient ESR nutation signals in excited aromatic triplet states
โ Scribed by R. Furrer; P. Fujara; C. Lange; D. Stehlik; H.M. Vieth; W. Vollmann
- Publisher
- Elsevier Science
- Year
- 1980
- Tongue
- English
- Weight
- 712 KB
- Volume
- 75
- Category
- Article
- ISSN
- 0009-2614
No coin nor oath required. For personal study only.
โฆ Synopsis
Tranaent ESR nutatlon signals followmg laser pulse excitation are analyzed for the case of the photoevnted tnplet state of acrrdme m a molecular crystal mafnx Essential features, in particular the short rise-time (<IO-' s) of the signals, can be related to the mhomogeneous nature of the ESR hnewdth Applications are dwxssed transition matrix ele-
๐ SIMILAR VOLUMES
Molecular order and dynamics of chlorophyll a triplets in liquid crystals are studied by transient ESR following pulsed laser excitation. The time evolution of the transverse magnetization is monitored at various static and microwave magnetic fields. Analysis ofthc ESR transients isachicved by emplo
## Abstract The ESR spectra of some aromatic chargeโtransfer complexes in the lowest excited triplet states were measured. From the extracted zeroโfieldโsplitting parameters it was found that in each case the lowest excited triplet state was localized on the donor, with a variable contribution of c
Blacetyl phosphorescence sensitzed by tnplet-excited recombmation products has been used to gwe opkally detected E!SR of radical-ton pmrs under radiolysls The yields of singlet-and tnplet-excrted products per germnate recombmmg pair of a yven muluphclty prove IO be equaI, and both are approxnnately
Triplet-state ESR spectra show that when the aromatic molecules anthracene, anthracene-d,,,, terphenyl, and acridine are dissolved m stretched, low-density polyethylene films, a fraction of these solute molecules become oriented with their X axis along the stretch direction but with their XY planes