title: [The change in optical spectra from solid and liquid solution of copper phthalocyanines derivatives].
abstract: In the present work, the change in electronic absorption spectra from three copper phthalocyanines (CuPc, tb-CuPc, oo-CuPc) in different environments was investigated. The mechanism of red shift Q-band absorption from the three species in an organic solvent before and after protonation was discussed. This was used to compare with those dispersed in solid films. The relation between the molecular interactions and the spectra change was studied. In a combination of POM, DSC and XRD techniques, the structure and morphology of the thin films were characterised. It was found that the molecules in the doped matrices of PC were associated or aggregated. This association and hence the corresponding change in absorption spectra cannot be altered by the modification of dopant concentration.
authors.affiliation: Key Laboratory of Luminescence and Optical Information, Institute of Optoelectronic Technology, Beijing Jiaotong University, China.
authors.forename: Xiao-pan
authors.initials: XP
authors.lastname: Zheng
authors.forename: Zhi-qun
authors.initials: ZQ
authors.lastname: He
authors.forename: Chun-xiu
authors.initials: CX
authors.lastname: Zhang
authors.forename: Zheng
authors.initials: Z
authors.lastname: Xu
authors.forename: Yong-sheng
authors.initials: YS
authors.lastname: Wang