Long-range exciton coupling from dipyrrinone chromophores

YS Byun, DA Lightner

Index: Byun, Young-Seok; Lightner, D. A. Tetrahedron, 1991 , vol. 47, # 47 p. 9759 - 9772

Full Text: HTML

Citation Number: 11

Abstract

Dipyrrinone chromophores, attached by their acid termini to give (1R, 2R)-cyclohexanediol dipropionate and diacetate esters (xanthobilirubinate and nor-xanthobilirubinate, respectively), interact through exciton coupling, as evidenced by intense bisignate circular dichroism Cotton effects for the pigment's long wavelength transition. The bis- xanthobilirubinate exhibits the expected negative exciton chirality (Δϵmax439-16, ...