title: Theoretical model for optical properties of porphyrin.
abstract: We propose a simple model to interpret the optical absorption spectra of porphyrin in different solvents. Our model successfully explains the decrease in the intensity of optical absorption at maxima of increased wavelengths. We also prove the dependence of the intensity and peak positions in the absorption spectra on the environment. The nature of the Soret band is supposed to derive from π plasmon. Our theoretical calculations are consistent with previous experimental studies.
authors.affiliation: Department of Physics, University of Illinois, 1110 West Green Street, Urbana, Illinois 61801, USA and Institute of Physics, Vietnam Academy of Science and Technology, 10 Dao Tan, Ba Dinh, Hanoi 10000, Vietnam.
authors.forename: Anh D
authors.initials: AD
authors.lastname: Phan
authors.affiliation: Institute of Physics, Vietnam Academy of Science and Technology, 10 Dao Tan, Ba Dinh, Hanoi 10000, Vietnam.
authors.forename: Do T
authors.initials: do T
authors.lastname: Nga
authors.affiliation: Department of Physics, Chungbuk National University, Cheongju 361-763, Korea.
authors.forename: The-Long
authors.initials: TL
authors.lastname: Phan
authors.affiliation: Faculty of Basic Science, Posts and Telecommunications Institute of Technology, 122 Hoang Quoc Viet, Hanoi 10000, Vietnam.
authors.forename: Le T M
authors.initials: le TM
authors.lastname: Thanh
authors.affiliation: Institute of Physics, Vietnam Academy of Science and Technology, 10 Dao Tan, Ba Dinh, Hanoi 10000, Vietnam.
authors.forename: Chu T
authors.initials: CT
authors.lastname: Anh
authors.affiliation: Laboratoire de Chimie Physique, CNRS UMR 8000, Université Paris-Sud, 91405 Orsay Cedex, France.
authors.forename: Sophie
authors.initials: S
authors.lastname: Bernad
authors.affiliation: Institute of Physics, Vietnam Academy of Science and Technology, 10 Dao Tan, Ba Dinh, Hanoi 10000, Vietnam.
authors.forename: N A
authors.initials: NA
authors.lastname: Viet
mesh_terms: D065966:Absorption, Physicochemical; D008958:Models, Molecular; D008968:Molecular Conformation; D055620:Optical Phenomena; D011166:Porphyrins / Q000737:chemistry*
chemical_list: D011166:Porphyrins