title: Octathienyl/phenyl-substituted zinc phthalocyanines J-aggregated through conformational planarization.
abstract: A novel family of thiophene-decorated phthalocyanines (M-TPcs) was efficiently synthesized, during which the key intermediate of these compounds was purified through a chemical approach. In the optimized geometries of M-TPcs, the peripherally linked thiophene rings are tilted from the Pc core, which oppose aggregation considering the mutual steric hindrance. However, Zn-TPc formed J-aggregates in many solvents while Ni-TPc and Cu-TPc did not. Octaphenyl-substituted zinc Pc (Zn-PPc) showed similar J-aggregation behavior as Zn-TPc. This unusual J-aggregation was attributed to the conformational planarization of the corresponding molecules.
authors.affiliation: The Key Lab of Organic Photoelectrons & Molecular Engineering of Ministry of Education, Department of Chemistry, Tsinghua University, Beijing, 100084, PR China. zhchen@tsinghua.edu.cn
authors.forename: Zihui
authors.initials: Z
authors.lastname: Chen
authors.forename: Lihong
authors.initials: L
authors.lastname: Niu
authors.forename: Yuanhua
authors.initials: Y
authors.lastname: Cheng
authors.forename: Xinyu
authors.initials: X
authors.lastname: Zhou
authors.forename: Cheng
authors.initials: C
authors.lastname: Zhong
authors.forename: Fushi
authors.initials: F
authors.lastname: Zhang