| Autor: |
Shirk, James S., Pong, Richard G. S., Snow, Arthur W. |
| Předmět: |
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| Zdroj: |
Journal of Chemical Physics; 3/15/1989, Vol. 90 Issue 6, p3380, 9p |
| Abstrakt: |
Persistent spectral holes were burned into the profile of the hydrogen bonded OH stretching absorption, near 3500 cm-1 , of three polymeric alcohols. The mechanism is an IR induced conformational change of a H-bonded OH group to weaken the hydrogen bond. In one polymer, an empirical quantum efficiency of about 5×10-3 was measured and a hole depth of 20% of the absorption was achieved with a low power cw laser. The conformational changes occur near the bond which is excited and before extensive intramolecular vibrational randomization. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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