Intramolecular proton transfer and excited-state relaxation in 2-(2-hydroxyphenyl)benzothiazole Academic Article uri icon


  • The excited state vibrational and conformational relaxation of 2-(2-hydroxyphenyl)benzothiazole in solution has been studied as a function of temperature by means of picosecond spectroscopy, using a streak camera with <5-ps resolution. Three distinct relaxation processes were identified: (a) intramolecular proton transfer producing a cis-keto tautomer occurring within 5 ps from T = 4 to 300 K; (b) vibrational energy redistribution and/or relaxation into the medium at a rate of 10” s'1 at 4 K and increasing rapidly with temperature; (c) radiationless decay (102-103 ps) induced by large amplitude torsional motion in solution at T > 200 K. © 1980, American Chemical Society. All rights reserved.

author list (cited authors)

  • Barbara, P. F., Brus, L. E., & Rentzepis, P. M.

citation count

  • 151

complete list of authors

  • Barbara, PF||Brus, LE||Rentzepis, PM

publication date

  • August 1980