http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Fabrication of Layer-By-Layer Assembled Bio-Architecture on Gold Nanorods
강대준,김동청,장아랑,유상훈,박성호 한국물리학회 2008 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.53 No.2
We have successfully fabricated a layer-by-layer (LBL)-assembled functional bio-architecture on gold nanorod substrates with an increased number of immobilized biomolecules. The vertical array of gold nanorods was fabricated through an electrochemical process, using porous aluminum oxide as a template and the dispersed lm of gold nanorods was prepared by using the Langmuir-Blodgett technique. Horse radish peroxidase was immobilized on the vertical array and on the dispersed film of gold nanorods through LBL assembly by using the specic interaction between avidin-biotin molecules. The levels of catalytic activity of the LBL-assembled bio-architectures fabricated on both the vertical array and the dispersed film of gold nanorods were, respectively, ∽2.8 and ∽1.5 times better than that of the flat gold surface due to an increase in surface area and ease of substrate accessibility. Scanning electron microscopy (SEM) and fluorescence images clearly show a regular, successively well-controlled LBL-assembled bio-architecture with a bilayer structure of proteins on gold nanorods. This controlled fabrication of biologically active enzymes on gold nanorod structures via LBL assembly demonstrates a technique for the development of bio-functional molecular devices with enhanced sensitivities and fast response time.