Synthesis and Characterization of Dendritic Macromolecules Containing Ferrocene

• Main Authors: Hsiu-ming Shen, 沈修銘
• Other Authors: Ching-fong Shu
• Format: Others
• Language: zh-TW
• Published: 1994
• Online Access: http://ndltd.ncl.edu.tw/handle/08212015238791693695

碩士 === 國立交通大學 === 應用化學系 === 83 === The novel convergent growth approach to topology macromole -culars based on dendritic fragments is described.The polyether dendritic fragments are prepared by starting from what will bec -come the periphery on the macromolecular and progressing inward .In here,we used convergent growth approach to synthesis containferrocene functional group at the periphery of the drndritic mac -romolecular.In the first stage,2 mole of 3-bromopropanyl ferro-cene is condensed with 1 mole 3,5-dihydroxylbenzyl alcohol,under phase-transfer condition. After transformation of the benzylic al -cohol functionality of the growing moleculars into the correspo -nding bromide.The procedure is repeated with stepwise addition of the monomer followed again by activation of benzylic site.In the other way, the resulting dendritic wedge,in their benzyl brom -ide can be coupled to polyfuctional core 1,1,1-tris(4-hydroxyph -yl)ethane to form the hyperbranched macromolecular.The dendri- mer structure can be characterized by use of spectroscopic tech- nology.At each growth step.their macromolecular weight about two fold,the molecular structure become progressively denser and more compact,and have a very low despersity.Electrochemical mea- sures show that all of the dendritic macromolcular show a singlereversible ovidation process.Every ferrocene at the periphera po