On the long-lived transient absorption observed in nanosecond laser photolysis studies of two polymethine cyanine dyes |
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Authors: | KRazi Naqvi DK Sharma GJ Hoytink |
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Institution: | Department of Chemistry, The University, Sheffield S3 7HF UK |
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Abstract: | It is shown that the long-lived transient absorption which is observed when solutions of cryptocyanine and DDI (1, 1′-diethyl-2, 2′-dicarbocyanine iodide) in methanol and other alcohols are exposed to nanosecond ruby laser pulses arises from a photoproduct whose formation requires consecutive absorption of two photons. |
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