✦ LIBER ✦

The lowest triplet state of pyrimidine in a crystalline host at 1.2 K. The spin-sublevel emission spectra and their vibrational assignment

✍ Scribed by C.J. Nonhof; J.H. van der Waals

Publisher: Elsevier Science
Year: 1982
Tongue: English
Weight: 452 KB
Volume: 92
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(82)83654-3

No coin nor oath required. For personal study only.

✦ Synopsis

Spin-sublevel phosphorescence spectra of pyrimidine in benzene are reported• The spectra related to the in-plane spin axes consist of progressions of totally symmetric bands, whereas that of the third sublevel in addition shows strong nontotally symmetric bands. Assignments are given, and some out-of-plane modes previously in dispute are identified (ulO b = 808, v17 b = 960, u s -~ 992 cm -1 , all B 1 ; vl0 a = 868 cm -1 , A2). AS a check similar experiments were carried out on pyrimidine incorporated in p-xylene and cyclohexane.

📜 SIMILAR VOLUMES

The lowest triplet state of pyrimidine i

The lowest triplet state of pyrimidine in a crystalline host at 1.2 K. Total phosphorescence and Tx sublevel excitation spectra

✍ C.J. Nonhof; J.H. Van Der Waals 📂 Article 📅 1982 🏛 Elsevier Science 🌐 English ⚖ 515 KB

The lowest triplet state of K2Cr2O7. Opt

The lowest triplet state of K2Cr2O7. Optical spectra and optically detected electron spin resonance at 1.2 K

✍ W.A.J.A. van der Poel; M. Noort; J. Herbich; C.J.M. Coremans; J.H. van der Waals 📂 Article 📅 1984 🏛 Elsevier Science 🌐 English ⚖ 802 KB

Hlgh-resolutron emssion and excitation spectra are reported for a K2C1207 crwtal at 1.2 K, and rhc effect of mmowave saturation on these spectra is dacussed. In the 1-l 2 GHz regon resonances occur at 4.628 and 7.267 CHz, pro~ng that the em&on stems from a tripiet state no) The orzgms of the To-So a

Sublevel decay kinetics of the triplet s

Sublevel decay kinetics of the triplet state of bacteriochlorophyll a and b in methyltetrahydrofuran at 1.2 K

✍ H.J. den Blanken; A.J. Hoff 📂 Article 📅 1983 🏛 Elsevier Science 🌐 English ⚖ 431 KB

The decay rates of the triplet sublevels of monomeric BChl a and b have been reexamined with pulsed microwave excitation. Our values of k, and ky are significantly higher than published values. The new results are discussed in relation to the eaciton model of the special pair makmg up the primary el

Vibrational dispersion in ground and exc

Vibrational dispersion in ground and excited states: the Γ 7(2T2g)⇐Γ8(4A2g) absorption and luminescence spectra of crystalline K2ReF6 at 4 K

✍ Marco Bettinelli; Lorenzo Di Sipio; Gianluigi Ingletto; Colin D. Flint 📂 Article 📅 1987 🏛 Elsevier Science 🌐 English ⚖ 253 KB

Trigonal crystals of K\*ReF, show intense r7 ( 2Tzs) -+r r ( 4AZg) luminescence at 4 and 77 K under 5 14 nm excitation. Extensive vibronic structure is resolved which is dominated by the vibronic origins due to the trigonal components ofthe Ye, vq and Y) modes of the ReFa-ion. The vibrational disper