摘要
The core-shell Fe2O3@Au particle with spindle morphology were synthesized by three steps.The mean size of the core-shell paricles was about 500 nm by 85 nm.The final single separated spindle particles were attached onto Si substrates.The thiophenol(TP) was served as probe molecule to investigate the pola-rized dependent surface-enhanced Raman scattering(SERS) from single particle.Dramatic variations in SERS intensity was observed when the single core-shell particle was oriented at different angles relative to the polarization of excitation laser.The maximum SERS intensity was detected for TP absorbed on the anisotropic particle which was in the polarization direction parallel to the long axis of the particle,while the minimum intensity was detected at the direction of the incident field that is perpendicular to the long axis of the particle.Our preliminary results provided useful way for obtaining deeper insight to the SERS mechanism.
The core-shell Fe2O3@ Au panicle with spindle morphology were synthesized by three steps. The mean size of the core-shell paricles was about 500 nm by 85 nm. The final single separated spindle particles were attached onto Si substrates. The thiophenol （TP） was served as probe molecule to investigate the pola- rized dependent surface-enhanced Raman scattering（SERS） from single particle. Dramatic variations in SERS intensity was observed when the single core-shell particle was oriented at different angles relative to the polari- zation of excitation laser. The maximum SERS intensity was detected for TP absorbed on the anisotropic parti- cle which was in the polarization direction parallel to the long axis of the panicle, while the minimum intensity was detected at the direction of the incident field that is perpendicular to the long axis of the particle. Our pre- liminary results provided useful way for obtaining deeper insight to the SERS mechanism.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2009年第3期593-595,共3页
Chemical Journal of Chinese Universities
基金
国家自然科学基金(批准号:20503019,20573076,20773091)
高等学校博士学科点专项科研基金(批准号:20050285019)
江苏省自然科学基金(批准号:BK2005032)资助
