| Cucurbit[n]urils(Q[n]s) have been a kind of relevant new host micracyclc compounds, the corresponding chemistry, that is the Q[n]-chemistry, become an important part in the supramolecular chemistry in recent years. A hydrophobic cavity and polar carbonyl groups surrounding the two opening portals, in additional, the varying cavity and portal sizes are common characteristic features for every member in the cucurbit[n]uril family and led to quite a few researchers focusing on this area. While Q[n]-based polymer chemistry became an important area in the Q[n]-chemistry. According to the function patterns, the Q[n]-based polymers can be divided into: 1) Q[n]-based coordination polymers based on the coordination of Q[n] with metal ions; 2) Q[n]-based supramolecular polymers based on the host-guest interaction; 3) Q[n]-based polymers based on covalent bonds.Based on previous works, Q[n]-based polymers based on covalent bonds became the main research works in this thesis, including 1) synthesis and structure characterization of cucurbit[7]uril-anchored polyacrylic acid(PAA); 2) synthesis and structure characterization of Q[7]-PAA-(2-naphthol); 3) absorption of Q[7]-PAA-(2-naphthol) for various dyes; 4) synthesis of monohydroxycucurbit[7]uril((HO)Q[7]); 5) structure characterization of(HO)Q[7]: i) using the outer surface interaction of Q[n], preparation of porous coordination polymers of(HO)Q[7] with alkaline earth metal ions(AE2+) in the presence of [Cd Cl4]2– cation as a structure directing agent, ii) absorption of the porous coordination polymer for volatile compounds.Using the one-pot strategy reported by Su and co-workers, we selected acrylic acid as monomer, ammonium persulfate as initiator and oxidant, synthesized a series of cucurbit[7]uril-anchored polyacrylic acid polymers(PAAs), the yields are in the range 30 ~ 80%. The samples have been characterized by 1H NMR, 1H NMR titrations of probe guests, 2D NMR, FTIR, SEM, TEM and TGA. This strategy offers a potential utilization of larger Q[n]s, such as Q[7] or Q[8], with higher ratio, and wider selectivities for Q[n]s and monomer materials in the preparation of Q[n]-based polymers.Esterifiation of Q[7]-PAA with 2-naphthol yielded a Q[7]-PAA-(2-naphthol), a derivative of Q[7]-PAA, which is insoluble in water, and can be used in the water treatment, and absorption of organic molecules. Q[7]-PAA-(2-naphthol) has been characterized by IR spectrum and 13 C CP-MAS NMR. The absorption of Q[7]-PAA-(2-napthol) for various basic dyes was monitored by UV-visible spectroscopy, in particular, the Q[7]-PAA-(2-napthol) polymer exhibits high selectivity for capture of neutral red in a neutral medium and releases the neutral red by washing with ethanol repeatedly. Moreover, the experiments also revealed that the higher degree of polymerization could result in an increase the number of pore space structure for more favourable the absorption of dye.Accorting to the(HO)Q[7] oxidation method reported by French scholar Bardelang and Ouariin in 2015,(HO)Q[7] has been synthesized in this thesis, X-ray diffraction analysis first revealed the crystal structure of(HO)Q[7]; using electropositive outer surface of Q[n](that is the so-called the outer surface interaction of Q[n]), which is ready to interact with [CdCl4]2- anions and so on, resulting in the coordination of Q[n] with metal ions, such as alkali, alkaline earth metal ion and formation of coordination polymers. Thus, interaction of the alkaline earth metal ions to(HO)Q[7] in the presence of [CdCl4]2– cation as a structure directing agent led to the formation of porous coordination polymers; Moreover, investigation revealed that the porous polymer showed different absorption capacity for different polar volatiles, particularly methanol. |
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