Calixarene constructed supramolecular polymer material and preparation method thereof
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A supramolecular polymer, calixarene technology, applied in organic chemistry and other directions, can solve the problems of poor water solubility of neutral viologen, difficult electrochemical manipulation process, etc., and achieve the effects of simple operation, broad application prospects and high yield
Inactive Publication Date: 2012-01-04
NANKAI UNIV
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But the fly in the ointment is that due to the poor water solubility of neutral vi
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[0032] A preparation method of a novel supramolecular polymer material, comprising the steps of:
[0033] 1) Preparation of ethyl bridged calix[4]arene:
[0034] Dissolve 1.7 g (4 mmol) of calix[4]arene in 60 mL of acetonitrile, add 0.28 g (5 mmol) of anhydrous sodium methoxide, and heat to reflux for 0.5 hour under nitrogen protection. Thereafter, 0.74 g (2 mmol) of ethylene glycol disulfonate was added, and reflux was continued for 48 hours. Cool to room temperature, filter and spin dry the solvent, add 100ml of dichloromethane to dissolve, wash the organic phase with 0.2mol / L hydrochloric acid (3×50mL) and distilled water respectively. Then add anhydrous sodium sulfate and dry for 9h. The desiccant was filtered, and the concentrated crude product was separated with a silica gel column, and the eluent was a dichloromethane-petroleum ether solution with a volume ratio of 1:1 to obtain 0.74 g of a white ethyl bridged calix[4]arene solid, producing rate 33%. The characteriz...
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Abstract
The invention discloses a calixarene constructed supramolecular polymer material. The chemical formula of a repeat unit of the material is C210H206N72O64S8; and the material consists of ethyl-bridged p-sulfonated calix[4]arene, cucurbit[8]uril and hexyl-bridged methyl viologen, wherein the ethyl-bridged p-sulfonated calix[4]arene and the cucurbit[8]uril serve as a large-ring host, the hexyl-bridged methyl viologen serves as a guest, and the supramolecular polymer with a host-guest inclusion structure is constructed through host-guest bonding. The invention has the advantages that: by the recognition advantage of the p-sulfonated calix[4]arene and the cucurbit[8]uril on specific groups of the viologen, a fibrous polymer material is prepared by a simple and feasible solution mixing method, and the method is easy to implement, high in yield, convenient and effective; and by a chemical reduction means of adding hydrazine hydrate, the polymer material can be well reduced and depolymerized,and the supramolecular polymer material has wide application prospect in the field of materials.
Description
【Technical field】 [0001] The invention relates to a preparation technology of a supramolecular polymer material, in particular to a supramolecular polymer material constructed of calixarene and a preparation method thereof. 【Background technique】 [0002] Supramolecular polymers are a class of new materials constructed through non-covalent bond interactions and have supramolecular chemical properties and polymer material properties [see: 1) Brunsveld, L., Folmer, B.J.B., Meijer, E.W., Sijbesma , R.P.Chem.Rev.2001, 101, 4071-4097.2) De Greef, T.F.A., Smulders, M.M.J., Wolffs, M., Schenning, A.P.H.J., Sijbesma, R.P., Meijer, E.W.Chem.Rev.2009, 109, 5687-5754 .]. When subjected to external stimuli, supramolecular polymers have good bond reversibility compared to covalent polymer molecules. People take advantage of this advantage to construct polymer materials with heat sensitivity and acid-base response [see: 1) Bergman, S.D. , Wudl, F.J. Mater.Chem.2008, 18, 41-62.2) Cordier...
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