Electrodeposition of CoPtP/Au multisegment nanowires: Synthesis and DNA functionalization

We have fabricated CoPtP/Au hard magnetic multisegment nanowires via template assisted electrochemical technique using a polycarbonate membrane with a nominal pore diameter of 50 nm. The synthesized nanowires are average 6 μm in lengthwith Au and CoPtP segments in alternative fashion. The CoPtP/Au exhibits a hard magnetic property with a coercive force of 1.85 kOe, when the applied field is parallel to nanowire's long axis. The magnetization value of CoPtP/Au multisegment nanowires is lower than CoPtP nanowires, which is due to the incorporation of the nonmagnetic Au material in the nanowire vicinity. The surface of the Au segment of multisegmented nanowires was modified with fluorescence loaded ds-DNA through thiol linker. The surface modification of the Au segment was confirmed through a confocal laser microscope and Fourier transform infrared spectroscopy measurement.