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Synthesis and Characterization of an Ordered Ladder Polyether

Author: LiYingFei
Tutor: ZhangYuQing;WangJianPing;XuChen
School: Henan University of Science and Technology
Course: Polymer Chemistry and Physics
Keywords: Supramolecular self-assembly Trapezoidal polymer Hydrogen bonds Template regulation
CLC: O631.3
Type: Master's thesis
Year: 2009
Downloads: 35
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Abstract


Supramolecular chemistry is the direction of extension of the supramolecular polymer chemistry , the microstructure controlled trapezoidal polymer intersection of polymer science, supramolecular chemistry and materials science . Currently, the use of the supramolecular template role have been synthesized many of the polymer having the ordered structure of the particular space . In this thesis, amide hydrogen bonds and π-π interactions as a template , using stepwise coupling polymerization method , polyether polymer synthesis of a double-stranded structure . The main contents and results are as follows: 1. Designed and synthesized three the gradual coupling reaction of the coupling agent can be used for precursors of 1,4 - dibromo - 2 ,5 - the two hexyloxybenzene 1,2 ' , 5 ' - di (hexyloxy) - biphenyl -4 - carboxylic acid and 4,4 '- ( 9 ,10 ) dibenzoate 4 , and its structure characterized . 2 was first synthesized five can be used for the stepwise coupling / reaction monomer compound N1 , N1, N4, N4- tetrakis ( 2 - hydroxyethyl) benzenedicarboxamide 5 and bis 3,5 - dihydroxybenzoate carboxamides monomer is 6 to 9, the class of compounds characterized wherein determination of the crystal structure of the 5 and 6 . The crystal structure analysis shows that these two compounds intermolecular there are a variety of O-H · · · O -type hydrogen bonds . Using four pairs of the synthesis of 3,5 - dihydroxybenzoyl amine monomers 6 to 9, as a template to the hydrogen bonding and π-π interactions , by stepwise coupling polymerization method \dibromoethane , synthetic trapezoidal polyether compound having a double-stranded structure 10 to 13, the characterization of the monomer and polymer by NMR and IR . Wherein monomer 6 and 8 , a polyether polymer 10 and 12 further characterized by XRD .

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CLC: > Mathematical sciences and chemical > Chemistry > Polymer chemistry ( polymer ) > Polymer physics and physical chemistry of polymers > The chemical nature of polymers
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