公开(公告)号：US20090225310A1

公开(公告)日：2009-09-10

申请号：US12372672

申请日：2009-02-17

申请人： Peidong Yang ,  Martin Mulvihill ,  Andrea R. Tao ,  Prasert Sinsermsuksakul ,  John Arnold

发明人： Peidong Yang ,  Martin Mulvihill ,  Andrea R. Tao ,  Prasert Sinsermsuksakul ,  John Arnold

IPC分类号： G01J3/44

CPC分类号： G01N21/658 ,  H01L21/0245 ,  H01L29/0676 ,  H01L29/518 ,  H01L29/775

摘要： A surface-enhanced Raman spectroscopy (SERS) substrate formed from a plurality of monolayers of polyhedral silver nanocrystals, wherein at least one of the monolayers has polyvinypyrrolidone (PVP) on its surface, and thereby configured for sensing arsenic is described. Highly active SERS substrates are formed by assembling high density monolayers of differently shaped silver nanocrystals onto a solid support. SERS detection is performed directly on this substrate by placing a droplet of the analyte solution onto the nanocrystal monolayer. Adsorbed polymer, polyvinypyrrolidone (PVP), on the surface of the nanoparticles facilitates the binding of both arsenate and arsenite near the silver surface, allowing for highly accurate and sensitive detection capabilities.

摘要翻译： 描述了由多面体银纳米晶体的多个单层形成的表面增强拉曼光谱（SERS）底物，其中至少一个单层在其表面上具有聚乙烯吡咯烷酮（PVP），从而构成用于感测砷。 通过将不同形状的银纳米晶体的高密度单层组装到固体支持物上形成高活性的SERS底物。 通过将分析物溶液的滴放置在纳米晶体单层上，直接在该基板上进行SERS检测。 在纳米颗粒表面上的吸附聚合物聚乙烯吡咯烷酮（PVP）促进了砷酸盐和砷酸盐在银表面附近的结合，从而允许高精度和灵敏的检测能力。

公开(公告)号：US09057705B2

公开(公告)日：2015-06-16

申请号：US12372672

申请日：2009-02-17

申请人： Peidong Yang ,  Martin Mulvihill ,  Andrea R. Tao ,  Prasert Sinsermsuksakul ,  John Arnold

发明人： Peidong Yang ,  Martin Mulvihill ,  Andrea R. Tao ,  Prasert Sinsermsuksakul ,  John Arnold

IPC分类号： H01L51/05 ,  G01N21/65 ,  H01L29/51 ,  H01L29/06 ,  H01L29/775 ,  H01L21/02

CPC分类号： G01N21/658 ,  H01L21/0245 ,  H01L29/0676 ,  H01L29/518 ,  H01L29/775

摘要： A surface-enhanced Raman spectroscopy (SERS) substrate formed from a plurality of monolayers of polyhedral silver nanocrystals, wherein at least one of the monolayers has polyvinypyrrolidone (PVP) on its surface, and thereby configured for sensing arsenic is described. Highly active SERS substrates are formed by assembling high density monolayers of differently shaped silver nanocrystals onto a solid support. SERS detection is performed directly on this substrate by placing a droplet of the analyte solution onto the nanocrystal monolayer. Adsorbed polymer, polyvinypyrrolidone (PVP), on the surface of the nanoparticles facilitates the binding of both arsenate and arsenite near the silver surface, allowing for highly accurate and sensitive detection capabilities.

摘要翻译： 描述了由多面体银纳米晶体的多个单层形成的表面增强拉曼光谱（SERS）底物，其中至少一个单层在其表面上具有聚乙烯吡咯烷酮（PVP），从而构成用于感测砷。 通过将不同形状的银纳米晶体的高密度单层组装到固体支持物上形成高活性的SERS底物。 通过将分析物溶液的滴放置在纳米晶体单层上，直接在该基板上进行SERS检测。 在纳米颗粒表面上的吸附聚合物聚乙烯吡咯烷酮（PVP）促进了砷酸盐和砷酸盐在银表面附近的结合，从而允许高精度和灵敏的检测能力。