title: The control of phthalocyanine properties through nitro-group electronic effect.
abstract: The UV-vis spectra of peripherally substituted tetranitrometallophthalocyanines (TNMPcs) 1a-1d and non-peripherally substituted TNMPcs 2a-2d were investigated. In comparison of 1a with 2a, there is the only difference in the substitution position of nitro-groups. The structural diversity of 1a and 2a resulted in different electronic effects of nitro-group on Pc rings, which caused them have two kinds of Q bands. The Q band in the UV-vis spectra of 1a-1d was split into two peaks, which were obviously influenced by temperature, while no split was observed in the Q band of 2a-2d. We can draw a conclusion that tuning nitro-group electronic effect is an important approach for controlling the properties of Pcs.
authors.affiliation: Faculty of Chemistry, Northeast Normal University, Changchun 130024, China. fdcong@eyou.com
authors.forename: Fang-Di
authors.initials: FD
authors.lastname: Cong
authors.forename: Bo
authors.initials: B
authors.lastname: Ning
authors.forename: Hai-Feng
authors.initials: HF
authors.lastname: Yu
authors.forename: Xiu-Jun
authors.initials: XJ
authors.lastname: Cui
authors.forename: Bin
authors.initials: B
authors.lastname: Chen
authors.forename: Shu-Gui
authors.initials: SG
authors.lastname: Cao
authors.forename: Chun-Yu
authors.initials: CY
authors.lastname: Ma
mesh_terms: D004563:Electrochemistry / Q000379:methods; D007211:Indoles / Q000737:chemistry*; D054833:Isoindoles; D008958:Models, Molecular; D009574:Nitro Compounds / Q000737:chemistry*; D013053:Spectrophotometry; D013816:Thermodynamics
chemical_list: D007211:Indoles; D054833:Isoindoles; D009574:Nitro Compounds; C013647:phthalocyanine