Surface-Enhanced Infrared Absorption of Ligands on Colloidal Gold Nanowires through Resonant Coupling.
作者: Wang DiWang XuxiangLin HanjieWang BenxinJiang JianhuiLi Zheng
作者单位: 1State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China.
2School of Science, Jiangnan University, Wuxi 214122, China.
刊名: Analytical chemistry, 2020, Vol.92 (5), pp.3494-3498
来源数据库: PubMed Journal
DOI: 10.1021/acs.analchem.9b04885
原始语种摘要: Pushing the detection limit of infrared absorption (IR) through surface-enhanced (SEIRA) approaches have far-reaching prospect for related applications in molecular analysis and detection. Specifically engineered Au nanowires (NWs) can be applied as the surface-enhancing substrates in colloidal solution, given their longitudinal surface plasmon resonance (SPR) being aspect-ratio dependent and extendable into the infrared region. Through carefully designed control experiments, we realized resonant coupling between the longitudinal surface plasmons of Au NWs and the vibration modes of the bonded oleylamine (OA) ligands. In our system, after deliberately tuning thickness of the OA ligands and ratio of the detached/attached ligands in the solution, the apparent enhancement factor of IR signal...
全文获取路径: PubMed  (合作)
影响因子:5.695 (2012)

  • through 经过
  • solution 溶液
  • ratio 
  • colloidal 胶质的
  • could 能够
  • given 已知的
  • extendable 可伸长的
  • around 环绕
  • longitudinal 纵向的
  • applied 应用的