Biomolecular recognition in DNA tagged CdSe nanowires.
DNA template driven CdSe nanobeads (NBs) and nanowires (NWs) have been synthesized by an electrodeposition technique. The synthesis protocol has yielded randomly oriented cubic CdSe NBs with mean size approximately 3.0 nm in presence of single stranded DNA, poly G(30). Monocrystalline cubic CdSe NWs of width approximately 4.0 nm with string-like morphology have been achieved when synthesized in presence of both poly G(30) and its conjugate, poly C(30). Optical absorption of CdSe NBs show a blue shift of 0.8 eV and long wavelength tailing where as NWs show steep increase of absorption in shorter wavelength regime accompanied by a further blue shift. DNA tags to the NBs or NWs have been confirmed from Fourier transform infrared spectroscopy measurements. Biomolecular recognition with CdSe NWs have been established by photoluminescence measurements.
Sarangi
S N
SN
Institute of Physics, Sachivalaya Marg, Bhubaneswar 751005, India.
Goswami
K
K
Sahu
S N
SN
D019187:Cadmium Compounds / Q000737:chemistry*; D004247:DNA / Q000737:chemistry*; D008163:Luminescent Measurements; D053770:Nanowires / Q000737:chemistry*; D018036:Selenium Compounds / Q000737:chemistry*; D012666:Semiconductors; D017550:Spectroscopy, Fourier Transform Infrared
D019187:Cadmium Compounds; D018036:Selenium Compounds; D004247:DNA; C058667:cadmium selenide