Photon echo evperlments are performed on delocabzed electromc evcltatlons of optxal dlmer states The delGuhzed dlmer states are found to have very long coherence times. close to the coherent hnxt The dlmer dephasmg IS quabtatlvely slmdar to dephasmg of pentacene monomers.
Temperature-dependent dephasing of delocalized dimer states of pentacene in p-terphenyl: picosecond photon echo experiments
โ Scribed by H.W.H. Lee; F.G. Patterson; R.W. Olson; D.A. Wiersma; M.D. Fayer
- Publisher
- Elsevier Science
- Year
- 1982
- Tongue
- English
- Weight
- 422 KB
- Volume
- 90
- Category
- Article
- ISSN
- 0009-2614
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โฆ Synopsis
C/lcrrlrrfr_l~ Dc/lorrrrlerlr, SrorlJwl chIlvcrsrry, Srorr~ord, Culf/onm 94305, us4 Ophcnl dcpllasmg 01 pcnraccnc dlmcrs m p-tcrplxnyl LC studtcd Dlmcr stdtcs Rx and R4 c\hlblt an ckponential tcmpcrdturc xhvdtmn ot Ti whelm IS mcorwstent wth a mcchnnism mvolting snttcrmg bchvccn dclocakzcd dlmcr stntcs Otlrcr dcpkemg nrccb~n~ms arc dwu%cd An uppcr hmlt IS plxcd on the rclawtlon ntc from the upper dtmcr state, R,, 10 R,
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in ha1 form 1 July 19S4 l'icosocond photon cc110 csperimcnts arc used to csamine opticA dephasing of substitutional dinters and monon~crs of tetrxenc and pcntaccne in p-terphenyl host crystals. \_ 4 comparison of cspuriments on tetrxenc and pcntxenc diners pennits the nnxltanim rcsponsiblc for tenlp
The homogeneous optical dephasing times (T,) and the non-photochemical hole burning (NPHB) linewidths of resorutin in glycerol glass are reported from 1.1 to 25.5 K. At low temperature, the linewidths obtained from NPHB are substantially wider than the linewidths (l/x T2) obtained from photon echo m