Luminactive Gold Complexes: Synthesis and Photophysics

发光金配合物：合成和光物理学

• 批准号: 1057659
• 负责人: Thomas Gray
• 金额: $ 39.6万
• 依托单位: Case Western Reserve University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-04-01 至 2015-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1057659&HistoricalAwards=false
• 关键词: Luminactive; Gold; Complexes; Synthesis; Photophysics

This award in the Chemical Synthesis (SYN) program supports work by Professor Thomas Gray at Case Western Reserve University to carry out fundamental studies in organometallic gold chemistry. (Ligand)gold(I) fragments bind to carbon in place of terminal hydrogens. Gold is grafted to organic scaffolds at controlled positions. Sensitive functional groups survive, and harsh reagents are avoided. The gold atom promotes population of triplet excited states upon light-excitation. These triplet states persist for microseconds or longer. Ultrafast kinetics studies of gold(I) organometallics are revealing the absorption and decay characteristics of (phosphine)gold(I) aromatics. A number of conjugated chromophores, with gold at the edges, are being prepared. The structural and optical properties of these compounds are being measured. Absorption and emission spectra, and state-to-state dynamics, are understood with time-dependent density-functional theory calculations. The Gray group is also developing synthetic methods that form stable carbon-gold bonds. These reactions form isolable, readily characterized, and easily handled organometallics. This research has relevance to such applications as catalysis, light-emitting diode construction, and film deposition, among others. The work will also contribute to an undergraduate laboratory in organometallic synthesis and in photophysical characterization. This activity applies gold click-chemistry, a copper-mediated cycloaddition of gold(I) alkynyls with organic azides. The resulting triazolate complexes are characterized by static and time-resolved emission spectroscopy. The supported research is training undergraduate and graduate students for scientific careers in industry, government, the military, and academia.

这个化学合成（SYN）项目的奖项支持凯斯西储大学托马斯·格雷教授在有机金属金化学方面的基础研究。（配体）金(I)碎片与碳结合，代替末端的氢。黄金在受控位置被嫁接到有机支架上。敏感官能团存活，避免使用刺激性试剂。金原子在光激发下促进三重态激发态的居群。这些三重态持续微秒或更长时间。金(I)有机金属的超快动力学研究揭示了（磷化氢）金(I)芳烃的吸收和衰减特性。一些边缘有金的共轭发色团正在制备中。正在测量这些化合物的结构和光学性质。吸收和发射光谱，和状态到状态的动力学，是理解与时间相关的密度泛函理论计算。格雷小组还在开发合成方法，形成稳定的碳金键。这些反应形成可分离、易于表征和易于处理的有机金属。这项研究与催化、发光二极管结构和薄膜沉积等应用有关。这项工作也将有助于有机金属合成和光物理表征的本科实验室。该活性应用金点击化学，铜介导的金(I)烷基基与有机叠氮化物的环加成。所得的三唑酸盐配合物通过静态和时间分辨发射光谱进行了表征。支持的研究是培养本科生和研究生在工业、政府、军队和学术界从事科学事业。