• 文献标题:   On-the-Spot Immobilization of Quantum Dots, Graphene Oxide, and Proteins via Hydrophobins
  • 文献类型:   Article
  • 作  者:   GRAVAGNUOLO AM, MORALESNARVAEZ E, MATOS CRS, LONGOBARDI S, GIARDINA P, MERKOCI A
  • 作者关键词:   graphene oxide, quantum dot, selfassembling, surface functionalization, vmh2 hydrophobin
  • 出版物名称:   ADVANCED FUNCTIONAL MATERIALS
  • ISSN:   1616-301X EI 1616-3028
  • 通讯作者地址:   ICN2 Catalan Inst Nanosci Nanotechnol
  • 被引频次:   18
  • DOI:   10.1002/adfm.201502837
  • 出版年:   2015

▎ 摘  要

Class I hydrophobin Vmh2, a peculiar surface active and versatile fungal protein, is known to self-assemble into chemically stable amphiphilic films, to be able to change wettability of surfaces, and to strongly adsorb other proteins. Herein, a fast, highly homogeneous and efficient glass functionalization by spontaneous self-assembling of Vmh2 at liquid-solid interfaces is achieved (in 2 min). The Vmh2-coated glass slides are proven to immobilize not only proteins but also nanomaterials such as graphene oxide (GO) and quantum dots (QDs). As models, bovine serum albumin labeled with Alexa 555 fluorophore, anti-immunoglobulin G antibodies, and cadmium telluride QDs are patterned in a microarray fashion in order to demonstrate functionality, reproducibility, and versatility of the proposed substrate. Additionally, a GO layer is effectively and homogeneously self-assembled onto the studied functionalized surface. This approach offers a quick and simple alternative to immobilize nanomaterials and proteins, which is appealing for new bioanalytical and nanobioenabled applications.