Triplet states in isotopically mixed anthracene crystals: High resolution optical spectroscopy

Port, H.; Rund, D.; Wolf, Hans Christoph

doi:10.1016/0301-0104(81)80108-5

Cited by 27 publications

(1 citation statement)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The so-called isotope shift of these bands with respect to the main band results from the change of the energy gap between the two electronic states, owing to the dependence of the zero-point energy on isotopic composition. In previous work, similar observations for the T 1 ← S 0 0−0 transition of selectively enriched naphthalene and anthracene established an approximate sum rule for such isotope shifts, which holds that the shift for a multiply-substituted isotopic isomer equals the sum of the shifts of the corresponding singly-substituted isotopomers. , (This should not be confused with the exact sum rule valid for the sum of the square of normal-mode frequencies ,…”

Section: Introductionmentioning

confidence: 68%

Isotope Shifts and Intersystem Crossing for Pentacene in p-Terphenyl. A Model System for Single-Molecule Dynamics

et al. 1999

View full text Add to dashboard Cite

We calculate isotope shifts and perform a normal-coordinate analysis to explain the observed systematic variation with isotopic composition of the intersystem crossing for deuterated pentacene in p-terphenyl. The tuning of a near resonance of the first excited singlet state S1 and vibrational levels of T3 by S1 ← T3 isotope shifts is analyzed. The physics of isotope shifts is discussed, and an explanation is given for the phenomenological sum rule dictating additivity of isotope shifts upon multiple substitution. We discuss mechanisms through which the host matrix interactions influence isotope shifts and increase inhomogeneous broadening.

show abstract