title: Intramolecular aggregation and optical limiting properties of triazine-linked mono-, bis- and tris-phthalocyanines.
abstract: A series of triazine-linked mono-, bis- and tris-phthalocyanines are synthesized, intramolecular aggregation is found in bis- and tris-phthalocyanines via π-π stacking interaction. Theoretical and experimental studies reveal the formation of the intramolecular aggregation. The spectrographic, photophysical and nonlinear optical properties of these compounds are adjusted for the formation of the intramolecular aggregation. The bis-phthalocyanine dimer presents smaller fluorescence quantum yield, lower triplet formation yield and the triplet-minus-ground state extinction coefficient, which causes poorer optical limiting performance. It is interesting that the tris-phthalocyanine is composed of a mono-phthalocyanine part and a bis-phthalocyanine part, the optical limiting property of the tris-phthalocyanine is similar to that of mono-phthalocyanine.
authors.affiliation: Beijing National Laboratory for Molecular Sciences, Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China; School of Materials Science and Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, PR China. Electronic address: chenjun@iccas.ac.cn.
authors.forename: Jun
authors.initials: J
authors.lastname: Chen
authors.affiliation: Beijing National Laboratory for Molecular Sciences, Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China.
authors.forename: Tao
authors.initials: T
authors.lastname: Zhang
authors.affiliation: Beijing National Laboratory for Molecular Sciences, Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China. Electronic address: g1704@iccas.ac.cn.
authors.forename: Shuangqing
authors.initials: S
authors.lastname: Wang
authors.affiliation: Beijing National Laboratory for Molecular Sciences, Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China.
authors.forename: Rui
authors.initials: R
authors.lastname: Hu
authors.affiliation: Beijing National Laboratory for Molecular Sciences, Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China.
authors.forename: Shayu
authors.initials: S
authors.lastname: Li
authors.affiliation: Beijing National Laboratory for Molecular Sciences, Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China.
authors.forename: Jin Shi
authors.initials: JS
authors.lastname: Ma
authors.affiliation: Beijing National Laboratory for Molecular Sciences, Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China. Electronic address: gqyang@iccas.ac.cn.
authors.forename: Guoqiang
authors.initials: G
authors.lastname: Yang
keywords: Intramolecular aggregation; Optical limiting properties; Photophysical properties; Phthalocyanine; Triazine