Photochemical hole-burning in vibronic bands of the S1 ← S0 transition of free-base porphin in an n-octane crystal
✍ Scribed by Silvia Voelker; Roger M. Macfarlane
- Publisher
- Elsevier Science
- Year
- 1979
- Tongue
- English
- Weight
- 550 KB
- Volume
- 61
- Category
- Article
- ISSN
- 0009-2614
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We report a study of the temperature dependence of the homogeneous width and frequency of the Sr + So O-O transitions of free-base pozphin as a guest in an n-octane matrix In the liquid helium temperature region, the measurements have been made by means of photochemicaf hole-burning, at hi&er temper
Tr.msien: and photochemical hole-burning is used to determine the homqeneous linewidths of the S, + So and Su t So . transitions of a magwsium porphin-pyridine comptex in four sites of n-octane (T= 1.1-4.2 I;). Thermally induced dephas-' ins of S, .-So is consistent 1% ith "exchange" to low-frequenc
Photochemlcal holc-burnmg IS uxd to detemunc rhc rclzmon woes oi vlbromc bands of the S, -So transmon of free-base porphm III ddlercnt subwwtIona1 sites oTrr-lle\~nc,rl-hcpt~c,fr-oct3nr and ,Idccmc at 1 6 K.. Tbr wbromc rc-Iaalion depends strongly on WC and host. A correlation bctaeen the rr-alka~e
A Zccmnn study ol the S, -So tnnsiwm or the unstable photolsomer of chlorm (7.8ilrhydroporphm) m ~hrcc dllkrcnt wcs in an whekanc single crystal at 4.2 K is prcscntcd. Zceman shafts, dctcctcd VU photochemicll holc-burnmg. hrvc J quadntlc field depcndencc which V;LIICS for each we. The S2 -Sr energy