𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Lifetimes of electronically excited states of molecules on oxide versus metal surfaces

✍ Scribed by R.M. Jaeger; K. Homann; H. Kuhlenbeck; H.-J. Freund

Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
491 KB
Volume
203
Category
Article
ISSN
0009-2614

No coin nor oath required. For personal study only.

✦ Synopsis

The optically forbidden 'Z+ -+a 'n transition of CO adsorbed on an epitaxially grown A&O3 (111) surface has been studied by means ofelectron energy loss spectroscopy. On this surface several CO adsorption states exist with adsorption enthalpies ranging from 88 (multilayer) to 170 meV. For the first time even in the (sub)monolayer range the vibrational fine structure ofthe energy loss peaks due to the 'Z++a'lI electronic transition of adsorbed CO could be clearly resolved. The half widths of the loss peaks have been used to estimate the lifetimes of the excited states

πŸ“œ SIMILAR VOLUMES

Surface photochemistry of alkyl aryl ket
Surface photochemistry of alkyl aryl ketones: energy transfer and the effect of a silica-gel surface on electronic states of excited molecules
✍ Tadashi Hasegawa; Masaaki Kajiyama; Yuko Yamazaki πŸ“‚ Article πŸ“… 2000 πŸ› John Wiley and Sons 🌐 English βš– 79 KB πŸ‘ 2 views

Alkyl aryl ketones undergo Type II photoreaction both on a silica-gel surface and in solution. The amount of acetophenone produced from valerophenone increases linearly with increase in the amount of valerophenone loaded at coverage below ca 60%. The effect of the alkyl chain length on the Type II p