In Search of the Molecular Triplet of C60 using Low Temperature Raman Spectroscopy
Abstract
The excited state properties of C(60) thin films have been probed in the temperature range 77- 273K using Raman spectroscopy. The change in the Raman, 2A(g) mode of C(60) (whose position is largely independent of temperature) was monitored as a function of the excitation intensity at 514.5nm. This mode normally positioned at l469cm(-1), was seen to shift reversibly to a lower Raman frequency with increasing laser intensity. Two excited state species have been identified. The first, at l466cm(-1) has been associated with the molecular triplet of C60. The second species at l463cm(-1), has been speculated to be an excited state co-operative involving two or more excited states in the solid and is seen to be intrinsic to solid state C(60) below the phase transition.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 2001
- Accession Number
- ADP012137
Entities
People
- A. B. Dalton
- G. Chambers
- H. J. Byrne
Organizations
- University of Minnesota College of Science and Engineering