𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Vibronic and inductive effects in the two-photon spectrum of anthracene

✍ Scribed by Pier Remigio Salvi

Publisher
Elsevier Science
Year
1985
Tongue
English
Weight
667 KB
Volume
116
Category
Article
ISSN
0009-2614

No coin nor oath required. For personal study only.

✦ Synopsis

The two-photon fluorescence excitation spectra of anthracene and a&dine in a Shpolskii matrix at 10 K, and anthracene and 9-methylanthracene in solution at room temperature, have been measured in the 3200-3900 A region. By means of the perturbation selection rules of alternant hydrocarbon theory, and a comparative analysis of the two-photon spectra of the three molecules, we have assigned the portion of the antbraccne spectrum below 28000 cm-' to the first electronic, i.e. B,,+, system and that above 28000 cm-' to the second electronic, i e. &"-, system. Our results give definite evidence of the elusive second electronic TIT* excited state.

πŸ“œ SIMILAR VOLUMES

Vibronic activity in the two-photon spec
Vibronic activity in the two-photon spectrum of pyrene
✍ G. Marconi; P.R. Salvi; R. Quacquarini πŸ“‚ Article πŸ“… 1984 πŸ› Elsevier Science 🌐 English βš– 673 KB

A CNDO/S Cl calculation of the two-photon vibronic activity of some btu and bzu vibrational modes of pyrenc is prcsented. The two-photon amplitude tensor is discussed in terms of vibronic coupling cocfticients calculated by means of the orbitat-following method. The results are in good agreement wit

The two-photon spectrum of pyrimidine. R
The two-photon spectrum of pyrimidine. Role of vibronic coupling
✍ Yi Luo; Hans Γ…gren; SΓΆren Knuts; Poul JΓΈrgensen πŸ“‚ Article πŸ“… 1993 πŸ› Elsevier Science 🌐 English βš– 578 KB

The one and two-photon spectra of the lowest electronic states of pyrimidine are analyzed by means of response theory calculations. Particular attention is paid to the lower onsphoton forbidden (nrt') 'A2 andonaphoton allowed (r&) 'Bi and 'B2 states. Despite being electronically allowed it is found

Vibronic effects in the MCD spectrum of
Vibronic effects in the MCD spectrum of buckminsterfullerene
✍ Giancarlo Marconi; Pier Remigio Salvi πŸ“‚ Article πŸ“… 1993 πŸ› Elsevier Science 🌐 English βš– 467 KB

The manifestations of vibronic coupling responsible for the magnetic circular dichroism (MCD) A terms in the region of the lowest excited state of Css have been examined through quantum-mechanical semi-empirical calculations. The vibronic sequences present both in the MCD and in the fluorescence spe

Inductive effects in alternants hydrocar
Inductive effects in alternants hydrocarbons: the two-photon spectra of biphenylene and 2,3,6,7-tetra-ethyl-biphenylene
✍ C. Gellini; P.R. Salvi; N. Orlic πŸ“‚ Article πŸ“… 1995 πŸ› Elsevier Science 🌐 English βš– 606 KB

The two-photon spectra of biphenylene (BP) and 2,3,6,7-tetra-ethyl-biphenylene (TEBP) have been measured in the region of the lowest two electronic transitions (310-440 nm). The S, -+ S, transition of BP, although group-theoretically allowed, is only weakly observed. The TEBP spectrum is, for both t