Tang Ying, Finlay John A, Kowalke Gregory L, Meyer Anne E, Bright Frank V, Callow Maureen E, Callow James A, Wendt Dean E, Detty Michael R
Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260, USA.
Biofouling. 2005;21(1):59-71. doi: 10.1080/08927010500070935.
Hybrid sol-gel-derived xerogel films prepared from 45/55 (mol ratio) n-propyltrimethoxysilane (C3-TMOS)/tetramethylorthosilane (TMOS), 2/98 (mol ratio) bis[3-(trimethoxysilyl)propyl]-ethylenediamine (enTMOS)/tetraethylorthosilane (TEOS), 50/50 (mol ratio) n-octyltriethoxysilane (C8-TEOS)/TMOS, and 50/50 (mol ratio) 3,3,3-trifluoropropyltrimethoxysilane (TFP-TMOS)/TMOS were found to inhibit settlement of zoospores of the marine fouling alga Ulva (syn. Enteromorpha) relative to settlement on acid-washed glass and give greater release of settled zoospores relative to glass upon exposure to pressure from a water jet. The more hydrophobic 50/50 C8-TEOS/TMOS xerogel films had the lowest critical surface tension by comprehensive contact angle analysis and gave significantly greater release of 8-day Ulva sporeling biomass after exposure to turbulent flow generated by a flow channel than the other xerogel surfaces or glass. The 50/50 C8-TEOS/TMOS xerogel was also a fouling release surface for juveniles of the tropical barnacle Balanus amphitrite. X-ray photon electron data indicated that the alkylsilyl residues of the C3-TMOS-, C8-TEOS-, and TFP-TMOS-containing xerogels were located on the surface of the xerogel films (in a vacuum), which contributes to the film hydrophobicity. Similarly, the amine-containing silyl residues of the enTMOS/TEOS films were located at the surface of the xerogel films, which contributes to the more hydrophilic character and increased critical surface tension of these films.
由45/55（摩尔比）正丙基三甲氧基硅烷（C3 - TMOS）/四甲基原硅酸酯（TMOS）、2/98（摩尔比）双[3 - （三甲氧基甲硅烷基）丙基] - 乙二胺（enTMOS）/四乙基原硅酸酯（TEOS）、50/50（摩尔比）正辛基三乙氧基硅烷（C8 - TEOS）/TMOS以及50/50（摩尔比）3,3,3 - 三氟丙基三甲氧基硅烷（TFP - TMOS）/TMOS制备的混合溶胶 - 凝胶衍生干凝胶薄膜，相对于在酸洗玻璃上的附着情况，被发现能够抑制海洋污损藻类石莼（同义词浒苔）游动孢子的附着，并且在受到水射流压力时，相对于玻璃，能使已附着的游动孢子有更大程度的释放。通过全面的接触角分析，疏水性更强的50/50 C8 - TEOS/TMOS干凝胶薄膜具有最低的临界表面张力，并且在暴露于流动通道产生的湍流后，相对于其他干凝胶表面或玻璃，能使8天龄的石莼幼苗生物量有显著更大程度的释放。50/50 C8 - TEOS/TMOS干凝胶也是热带藤壶红巨藤壶幼体的防污释放表面。X射线光电子数据表明，含C3 - TMOS、C8 - TEOS和TFP - TMOS的干凝胶中的烷基硅烷基残基位于干凝胶薄膜表面（在真空中），这有助于薄膜的疏水性。同样，enTMOS/TEOS薄膜中含胺的硅烷基残基位于干凝胶薄膜表面，这有助于这些薄膜具有更亲水的特性并提高临界表面张力。
