Spectroscopy of perylene van der waals complexes: the effect of blocking one site with benzene

✍ Scribed by Mark M. Doxtader; Michael R. Topp

• Publisher: Elsevier Science
• Year: 1986
• Tongue: English
• Weight: 454 KB
• Volume: 124
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(86)85009-6

✦ Synopsis

The fluorescence excitation spectra obtained on further complexation of perylene-benzene by other species m quatemary supersonic expansions have been used to confirm a number of important structural assignments in molecular complexes. The interpretation of spectra of species such as perylene-Ar, is complicated by the fact that there are two equivalent adsorption sites above and below the aromatic ring plane. It is shown here that benzene effectively blocks perylene to close approach by species such as Ar, N, and cyclopropane. Thus, red-shifted sequences of resonances may be generated from which two-sided complexation has effectively been eliminated. The resulting simplified spectra have been used to confirm previous structural assignments.