文献类型：期刊文献

英文题名：A supramolecular peptide polymer from hydrogen-bond and coordination-driven self-assembly

作者：Zhu, Xiaomin[1,2];Zou, Rongfeng[3];Sun, Peng[4];Wang, Qi[5];Wu, Junchen[1,2]

机构：[1]East China Univ Sci & Technol, Key Lab Adv Mat, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Inst Fine Chem, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China;[3]Royal Inst Technol KTH, Div Theoret Chem & Biol, Sch Biotechnol, AlbaNova Univ Ctr, S-10691 Stockholm, Sweden;[4]Chinese Acad Sci, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan Inst Phys & Math, Wuhan 430071, Hubei, Peoples R China;[5]Nantong Univ, Coll Publ Hlth, 9 Seyuan Rd, Nantong 226019, Peoples R China

年份：2018

卷号：9

期号：1

起止页码：69

外文期刊名：POLYMER CHEMISTRY

收录：;EI(收录号：20175204580157);WOS:【SCI-EXPANDED(收录号:WOS:000418370400008)】；

基金：We thank the NSFC/China (91529101, 21572057 and 21778017) (91529101 and 21572057) for financial support. Rongfeng Zou thanks the China Scholarship Council (CSC) for financial support.

语种：英文

外文关键词：Dichroism - Fluorescence spectroscopy - Fourier transform infrared spectroscopy - Viscosity measurement - Drug delivery - Light scattering - Scanning electron microscopy - Dimethyl sulfoxide - High resolution transmission electron microscopy - Peptides - Atomic force microscopy - Positive ions - Circular dichroism spectroscopy - Nuclear magnetic resonance spectroscopy - Hydrogen bonds

摘要：A terpyridine-and guanine-functionalized peptide was developed that could form different morphologies by self-assembly or coordination with Fe2+ in dimethyl sulfoxide. The self-assembly of the peptide is attributed to the G-quartet formation of a guanine moiety and intermolecular terpyridine p-p stacking. Upon the addition of Fe2+, a Fe2+- (terpyridine)(2) complex is formed that turns the square-planar self-assembly to a three-dimensional self-assembly. As a consequence, a variety of interesting morphologies and chemical properties were observed. The self-assembled polymers were studied by nuclear magnetic resonance spectroscopy, ultraviolet-visible and fluorescence spectroscopy, viscosity measurement, circular dichroism, Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy, transmission electron microscopy, dynamic light scattering, and atomic force microscopy. This external stimuli driven self-assembly of a peptide may be further applied to drug delivery applications.