title: [The study of induced circular dichroism of phenylalanine bridged metal bis-porphyrin].
abstract: L- and D-phenylalanine bridged zinc bis-porphyrin with the connecting chain at ortho and para position of two phenyl rings [o,o-C2-Phe-C2-(TPP)2Zn2 and p,p-C2-Phe-C2-(TPP)2Zn2] have been synthesized and characterized. o,o-C2-Phe-C2-(TPP)2Zn2 exhibited strong induced circular dichroism (ICD). While p,p-C2-Phe-C2-(TPP)2Zn2 exhibited no significant ICD. The ICD of present complexes were mainly determined by the pi-pi interaction and chiral excition coupling between two porphyrin moieties of the molecules. Our results also indicated that the existence of chiral center in a porphyrin molecule does not mean it would surely exhibit ICD.
authors.affiliation: Department of Applied Chemistry, South China University of Technology, 510640 Guangzhou.
authors.forename: H
authors.initials: H
authors.lastname: Liu
authors.forename: X
authors.initials: X
authors.lastname: Ying
authors.forename: X
authors.initials: X
authors.lastname: Hu
authors.forename: Y
authors.initials: Y
authors.lastname: Liu
authors.forename: J
authors.initials: J
authors.lastname: Huang
authors.forename: J
authors.initials: J
authors.lastname: Huang
authors.forename: L
authors.initials: L
authors.lastname: Ji
authors.forename: Z
authors.initials: Z
authors.lastname: Yao
authors.forename: J
authors.initials: J
authors.lastname: Zhang
mesh_terms: D002614:Chelating Agents; D002942:Circular Dichroism / Q000379:methods; D008665:Metalloporphyrins / Q000032:analysis / Q000737:chemistry*; D015394:Molecular Structure; D010649:Phenylalanine / Q000032:analysis / Q000737:chemistry*; D013237:Stereoisomerism
chemical_list: D002614:Chelating Agents; D008665:Metalloporphyrins; C017802:zinc hematoporphyrin; D010649:Phenylalanine