Fabrication and electrochemical application of monolayers of well-ordered macroporous silica.
Highly ordered macroporous silica films with a monolayer thickness and regular array of spherical pores with diameters of about 305 nm are prepared using templates self-assembled by polymethylmethacrylate (PMMA) spheres on solid surfaces by spin coating. The macropores are uniform in size and completely exposed on the bottom surface of the film after the PMMA spheres are etched out. Based on electrochemical experiments, the film allows for easy mass transport of Ru(bpy)3(2+) to the ITO surface. Electrochemical detection of DNA hybridization was also carried out in model oligonucleotide hybrids immobilized on the macroporous silica film.
Kim
In Young
IY
Department of Chemistry, Division of Nano Sciences, Ewha Womans University, Seoul 120-750, Korea.
Jeong
Byeongmoon
B
Yoon
Moon Young
MY
Kim
Jinheung
J
D055664:Electrochemical Techniques / Q000379:methods*; D008855:Microscopy, Electron, Scanning; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure; D036103:Nanotechnology / Q000379:methods*; D009841:Oligonucleotides / Q000737:chemistry; D019904:Polymethyl Methacrylate / Q000737:chemistry; D016062:Porosity; D012822:Silicon Dioxide / Q000737:chemistry*; D017971:Tin Compounds / Q000737:chemistry
D009841:Oligonucleotides; D017971:Tin Compounds; C109984:indium tin oxide; D012822:Silicon Dioxide; D019904:Polymethyl Methacrylate