The excited-state torsional potentials of substituted 9-phenylanthracenes

✍ Scribed by David W. Werst; William F. Londo; John L. Smith; Paul F. Barbara

• Book ID: 103028348
• Publisher: Elsevier Science
• Year: 1985
• Tongue: English
• Weight: 588 KB
• Volume: 118
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(85)85393-8

✦ Synopsis

The seeded free jet LIF spstmscopy of the S, + S, transition of 9_(3'-me~ylphenyl)anlhracrnc. 9-(4'-methyIphenyl)Uuacenq g-(3'-fluoropbcnyl)auIhrawne, and g-(4'-fluorophenyl)anthracene has been studied. The lowest-frequency S, mode for all 01 these molauks is assigned to torsional motions about the bond thal joins the phenqi and amhracene ring+ Effective torsional potentials have been determined by filting Lhe rorsional vibrational spacings to a one-dirntional potential of the form v(e) = gz,V"(l --CDs n+) ' Alfred P. Sloan Fellowand Presidarrial Young Investigator.