标题:Helical nano-structures self-assembled from dimethylaminoethyloxycontaining unsymmetrical octakis-substituted phthalocyanine derivatives
作者:Ma, P.;Bai, Z.;Gao, Y.;Wang, Q.;Kan, J.;Bian, Y.;Jiang, J.
作者机构:[Ma, P] Department of Chemistry, University of Science and Technology Beijing, Beijing, 100083, China, Department of Chemistry, Shandong University, J 更多
通讯作者:Ma, P.
通讯作者地址:[Jiang, JZ]Univ Sci & Technol Beijing, Dept Chem, Beijing 100083, Peoples R China.
来源:Soft matter
出版年:2011
卷:7
期:7
页码:3417-3422
DOI:10.1039/c0sm01200a
摘要:The self-assembling properties of metal free unsymmetrical 2,3,9,10,16,17,23-heptakis(butyloxy)-24- mono(dimethylaminoethyloxy) phthalocyanine H_2{Pc(OC_4H_9)_7[OC _2H_4N(CH_3)_2]} (1) and its zinc complex counterpart Zn{Pc(OC_4H_9)_7[OC _2H_4N(CH_3)_2]} (2) in MeOH have been comparatively investigated by scanning electron microscopy (SEM), X-ray diffraction (XRD) technique, and IR and UV-vis spectroscopy. Cooperation of the intermolecular hydrogen bonding/Zn-N coordination bonding with π-π interaction between neighboring phthalocyanine molecules due to the presence of one peripheral dimethylaminoethyloxy side chain for 1 and 2 results in nanostructures with different morphology including left- and right-handed helical ribbons, as well as hollow nanotubes for 1 and nanowire bundles for 2. Electronic absorption spectroscopic results reveal the H-aggregate nature in all the nanostructures formed from both compounds 1 and 2, indicating the dominant π-π intermolecular interaction between phthalocyanine molecules. The IR and X-ray diffraction (XRD) results reveal a dimeric supramolecular structure formed through the intermolecular hydrogen bonding or Zn-N coordination bonding interaction between two molecules, which as the building block further packs into the target nanostructures depending on π-π interaction with the help of hydrogen bonding/ Zn-N coordination bonding interaction between the dimeric supramolecular building blocks for 1 and 2. In particular, the morphological evolution of the nanostructures from helical ribbons to nanotubes has been clearly revealed during the self-assembly process of unsymmetrical phthalocyanine compound 1. In addition, the nanostructures self-assembled from both 1 and 2 were revealed to show good semiconducting properties with the conductivity in the range of 2.04 × 10~(-5) to 1.28 × 10~(-4) S m~(-1) in air due to the ordered one-dimensional π-π stacking enhanced by hydrogen bonding/metal-ligand coordination bonding interaction, which
收录类别:EI;SCOPUS;SCIE
WOS核心被引频次:23
Scopus被引频次:22
资源类型:期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-79955800686&doi=10.1039%2fc0sm01200a&partnerID=40&md5=7e8bb02fc858178b9da491cdf3cb6312
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