Template-assisted synthesis of polymer-li composites with fractal patterns
AUSTRALIAN JOURNAL OF CHEMISTRY（2011）
摘要
A facile route for the synthesis of polymer-lithium halide composites with fractal patterns ranging from the nano-to microscale has been developed by employing a two-step template-assisted approach at room temperature. First, polydimethyl diallyl ammonium chloride (PDDA) is synthesized through the controlled polymerization of the monomers inside the interlayers of montmorillonite (MMT). Subsequently, the PDDA-MMT is used as a template to react with LiCl/THF solution. The polymer segments were separated from the MMT interlayer space by employing a reverse ion-exchange process. It was found that the morphology of the fractal patterns can be controlled by varying the polymerization concentration of the monomer. It is concluded that the limited polymerization of PDDA and the reverse ion-exchange process produce the non-equilibrium conditions that serve as the critical factors in forming the fractal patterns. The mechanism for the formation of the fractal structure is proposed and discussed in detail.
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关键词
pharmaceutical chemistry,spectroscopy,self assembly,sensors,combinatorial,kinetics,inorganic chemistry,colloids,photochemistry,ab initio calculations,amino acids,catalysis,educational,structure,density functional theory,surface chemistry,macromolecules,peptide,proteins,crystallography,polymer chemistry,biosensors,medicinal chemistry,biocatalysis,crystal structures,interfaces,mass spectrometry,combinatorial chemistry,quantum chemistry,electrochemistry,ionic liquids,enzymes,nanotechnology,green chemistry,supramolecular chemistry,analytical chemistry,organic chemistry,biological chemistry,computational chemistry,physical chemistry,reaction mechanisms
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