| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 869437 | Biosensors and Bioelectronics | 2007 | 6 Pages |
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 ∼3.0 nm in presence of single stranded DNA, poly G(30). Monocrystalline cubic CdSe NWs of width ∼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.
