POLY 230 |
| By hydrolysis of trialkoxysilane with Si : Na ratio = 2 : 1, incompletely condensed Si-7 triol derivative, T7, sodium salt was firstly formed, and converted into Si-8 compound. This compound was elucidated as so-called double deck silsesquioxane tetrasilanol (double deck T8) sodium salt. When the ratio is 1 : 1, cyclic tetrasiloxane tetraol, T4 sodium salt was obtained. All cis isomer was the predominant product among the four possible isomers. When completely condensed T8 was treated with sodium hydroxide with Si : Na ratio = 2 : 1, T7 and double deck T8 and even cyclic tetramer were obtained. These are versatile intermediate to construct new nano hybrid materials. |
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Functional Nanomaterials from New Polymer Synthetic Methodologies
8:30 AM-12:00 PM, Monday, April 7, 2008 Hilton New Orleans Riverside -- Grand Salon 7/10, Oral
Division of Polymer Chemistry |