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.

该奖项根据 2009 年美国复苏和再投资法案（公法 111-5）提供资金。 无机、生物无机和有机金属化学项目支持德克萨斯农工大学 Janet Bluemel 教授的研究，合成新一代用于将催化剂固定在氧化物载体上的连接体。 新的4,4'-双膦联苯和对四膦四苯基元件连接体包含刚性主链，可防止膦基团和结合的络合物向下弯曲到支撑物表面并分解。 这些四苯基元件支架为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。 固态核磁共振用于测量它们在表面上的平移和进动型迁移率。特别关注[(联苯)-R2PEt]+-O-{氧化物载体}键，因为这是人们第一次能够探测离子键的“灵活性”。 将刚性膦连接基引入到用于烯烃氢化和氢化硅烷化的金属催化剂中。 学生将通过国际和行业合作接受跨学科培训。