✦ LIBER ✦

The nature of molecular excited states produced by weak light sources

✍ Scribed by W. Rhodes

Publisher: Elsevier Science
Year: 1971
Tongue: English
Weight: 730 KB
Volume: 11
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(71)80351-2

No coin nor oath required. For personal study only.

✦ Synopsis

It is shown 'that upon excitation of a molecule by light from a thermal source, the incident fieki ten& to act as a projection operator for a subspace spanned by eigenstates pf the molecular hamihonian. Furthermore, for chaotic light sources there is an effective upper limit, T, for the time during which there is coherent em5tation. If r is rpch greater than the uncertainty minimum, aa is normaI& the case, the reduced density operator for the excited states of. the molecule becomes "filtered", the extent of which determimes the pattern of subsequent radiative and radiationless decay protisses. The limitation of the "fi!tering" process to the intervat z provides a.new di$i+ion for iarge-aftd small-molecub behavior.

. .

📜 SIMILAR VOLUMES

Photoluminescence of molecular C70 at 1.

Photoluminescence of molecular C70 at 1.5 K. On the nature of the lowest excited states

✍ J.B.M. Warntjes; I. Holleman; G. Meijer; E.J.J. Groenen 📂 Article 📅 1996 🏛 Elsevier Science 🌐 English ⚖ 512 KB

We report Shpol'skii-type luminescence spectra of C70 in n-pentane at 1.5 K with vibronic linewidths of 3 cm -~. The vibronic structure of both fluorescence and phosphorescence has been unravelled. The fluorescence intensity largely shows up in vibronic bands corresponding to transitions to ground-s

The concentration of tocopherols from na

The concentration of tocopherols from natural sources by molecular distillation

✍ J. Green; P. R. Watt 📂 Article 📅 1950 🏛 John Wiley and Sons 🌐 English ⚖ 732 KB

The nature of the Raman damping constant

The nature of the Raman damping constant and its effect upon resonant light scattering from molecular systems in the weak field limit

✍ J.M. Friedman 📂 Article 📅 1979 🏛 Elsevier Science 🌐 English ⚖ 342 KB

Evidence for the production of singlet m

Evidence for the production of singlet molecular oxygen from the quenching of excited states of dialkyl ketones by molecular oxygen

✍ K.C. Wu; A.M. Trozzolo 📂 Article 📅 1979 🏛 Elsevier Science ⚖ 272 KB

Femtosecond studies of vibrationally hot

Femtosecond studies of vibrationally hot molecules produced by intramolecular proton transfer in the excited state

✍ C. Chudoba; S. Lutgen; T. Jentzsch; E. Riedle; M. Woerner; T. Elsaesser 📂 Article 📅 1995 🏛 Elsevier Science 🌐 English ⚖ 491 KB

The keto-type reaction product of intramolecular proton transfer in the excited state of 2-(2'-hydroxy-5'methylphenyl)benzotriazole is investigated by femtosecond experiments in a wide spectral range. Keto-type molecules produced on a 100 fs time scale show an emission band between 600 and 800 nm th

Synthesis of multiporphyrinic α-polypept

Synthesis of multiporphyrinic α-polypeptides: towards the study of the migration of an excited state for the mimicking of the natural light harvesting device

✍ Nathalie Solladié; Arnaud Hamel; Maurice Gross 📂 Article 📅 2000 🏛 Elsevier Science 🌐 French ⚖ 269 KB

The synthesis of a porphyrin functionalized derivative of the l-lysine is reported. Three peptides, bearing, respectively, two, four and eight chromophores, have been synthesized using the new porphyrin functionalized amino-acid.