Rigid Biphenyl and Tetraphenylelement Linker Scaffolds for Superior Immobilized Catalysts

用于优质固定化催化剂的刚性联苯和四苯元素连接支架

• 批准号: 0911207
• 负责人: Janet Bluemel
• 金额: $ 39万
• 依托单位: Texas A&M Research Foundation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-08-01 至 2013-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0911207&HistoricalAwards=false
• 关键词: Rigid; Biphenyl; Tetraphenylelement; Linker; Scaffolds

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5). The Inorganic, Bioinorganic and Organometallic Chemistry Program supports the research of Professor Janet Bluemel of Texas A&M University to synthesize a new generation of linkers for the immobilization of catalysts on oxide supports. New 4,4'-bisphosphine biphenyl and p-tetraphosphine tetraphenyl-element linkers incorporate rigid backbones which prevent the phosphine groups and the bound complexes from bending down to the surface of the support and decomposing. These tetraphenyl-element scaffolds offer up to three metal coordination sites per surface binding site, so that optimal surface coverages are obtained. Solid-state NMR is used to measure their translational and precession-type mobility on the surface.Special attention is given to the [(biphenyl)-R2PEt]+-O-{oxide support} linkage, as this is the first time one can probe the "flexibility" of an ionic bond. The rigid phosphine linkers are incorporated into metal catalysts for olefin hydrogenation and hydrosilylation. Students will receive interdisciplinary training with both internationally and industrially collaborative efforts.

该奖项是根据2009年《美国复苏与再投资法》（公法111-5）资助的。 无机，生物有机和有机金属化学计划支持德克萨斯州A＆M大学的Janet Bluemel教授的研究，以合成新一代的接头，以将催化剂固定在氧化物支持上。 新的4,4'-双膦二苯基和p-四膦四苯基元素连接器结合了刚性骨架，可防止磷酸基团和结合络合物弯曲到支撑的表面并分解。 这些四苯基元素支架每个表面结合位点提供多达三个金属配位位点，从而获得最佳的表面覆盖率。 固态NMR用于测量其在表面上的转化和进动型迁移率。给予[（biphenyl）-R2PET]+ - o- o- {氧化物支持}的特定注意，因为这是第一次可以探测离子键的“灵活性”。 将刚性磷酸接头掺入金属催化剂中，以进行烯烃氢化和氢化硅烷化。 学生将通过国际和工业合作的努力接受跨学科培训。