CAJ | 학술논문

通过氧化还原法制备了粒径处于50~65 nm的球形银(Ag)纳米粒子,采用扫描电子显微镜(SEM)分析其形貌及单分散性。在 Ag 纳米粒子基础上采用沉积自组装法合成了有效粒径为80．8 nm 的Ag/牛血清白蛋白(BSA)核壳结构纳米粒子。结合SEM、透射电子显微镜(TEM)、X 射线衍射(XRD)和荧光发射光谱(FL)分析发现,BSA 有效地包覆在 Ag纳米粒子的外层,Ag/BSA 核壳结构纳米粒子单分散性良好,加入 Ag/BSA 核壳结构纳米粒子的聚苯乙烯(PS)的荧光强度从100增强到6000。研究结果表明, BSA 隔离层对位于 Ag 表面附近的 PS 分子的荧光强度有显著的增强效应。
통과양화환원법제비료립경처우50~65 nm적구형은(Ag)납미입자,채용소묘전자현미경(SEM)분석기형모급단분산성。재 Ag 납미입자기출상채용침적자조장법합성료유효립경위80．8 nm 적Ag/우혈청백단백(BSA)핵각결구납미입자。결합SEM、투사전자현미경(TEM)、X 사선연사(XRD)화형광발사광보(FL)분석발현,BSA 유효지포복재 Ag납미입자적외층,Ag/BSA 핵각결구납미입자단분산성량호,가입 Ag/BSA 핵각결구납미입자적취분을희(PS)적형광강도종100증강도6000。연구결과표명, BSA 격리층대위우 Ag 표면부근적 PS 분자적형광강도유현저적증강효응。
Spherical silver (Ag)nanoparticles with the average diameter 50-65 nm were synthesized by oxida-tion-reduction process.The morphology and monodispersity of the Ag nanoparticles was characterized by scan-ning electron microscope (SEM).Ag/bovine serum albumin (BSA)core-shell structure nanoparticles approxi-mately 80.8 nm in effective diameter were fabricated by deposition method and self-assembling onto Ag nanop-articles.The results of SEM,transmission electron microscope (TEM),X-ray diffraction (XRD)and fluores-cence emission spectra (FL)showed that BSA effectively coated on the surface of Ag nanoparticles,and Ag/BSA core-shell structured nanoparticles had good monodispersity.Furthermore,fluorescence intensity of PS en-hanced from 100 to 6 000 by Ag/BSA core-shell structured nanoparticles.The results showed that BSA isolation layer had significant enhancement effect on fluorescence intensity of PS near the surface of Ag.