Abstract
THE conventional flash photolysis technique is limited, by the flash duration, to times which are usually greater than 1 µs (ref. 1). There is a need to reach times shorter than this, particularly to observe and study the absorption of excited singlet states which typically have lifetimes in the nanosecond range. The appearance of the Q switched laser has provided a means to this end, and photoelectronic detection methods have already been used in several laboratories to observe transients in the nanosecond region. Because of the high bandwidth required, such methods have serious limitations and we have therefore sought to extend the original double flash technique2, which has been so useful in microsecond flash photolysis, into the nanosecond region. A brief description of our method was given a year ago3 and here we describe an improved form of the apparatus and its application to the observation of the absorption spectra of excited singlet states of a number of molecules.
This is a preview of subscription content, access via your institution
Access options
Subscribe to this journal
Receive 51 print issues and online access
$199.00 per year
only $3.90 per issue
Buy this article
- Purchase on Springer Link
- Instant access to full article PDF
Prices may be subject to local taxes which are calculated during checkout
Similar content being viewed by others
References
Porter, G., Z. Electrochem., 64, 59 (1960).
Porter, G., Proc. Roy. Soc., A, 200, 284 (1950).
Porter, G., and Topp, M. R., in Nobel Symposium 5—Fast Reactions and Primary Processes in Reaction Kinetics, 158 (Interscience, London and New York, 1967).
Porter, G., and Windsor, M. W., Proc. Roy. Soc., A, 245, 238 (1958).
Novak, J. R., and Windsor, M. W., J. Chem. Phys., 47, 3075 (1967); Science, 161, 1342 (1968).
Nakato, Y., Yamamoto, N., and Tsubomura, H., Chem. Phys. Lett., 2, 57 (1968).
Birks, J. B., and Munro, H., Progress in Reaction Kinetics, 4, 239 (Pergamon Press, 1967).
Berlman, I. B., Handbook of Fluorescence Spectra of Aromatic Molecules (Academic Press, 1965).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
PORTER, G., TOPP, M. Nanosecond Flash Photolysis and the Absorption Spectra of Excited Singlet States. Nature 220, 1228–1229 (1968). https://doi.org/10.1038/2201228a0
Received:
Issue Date:
DOI: https://doi.org/10.1038/2201228a0
Comments
By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.
