Zno Nanoparticles in Hydrogel Polymer Network for Bio-Imaging-Juniper publishers
Global Journal of Nanomedicine-Juniper publishers Introduction Luminescent II-VI semiconductors have been studied immensely for their optoelectronic and bio-photonic applications. Semiconductor emitters are becoming more prominent in bio medical imaging because of their narrow, tunable emission range, and high stability. Thus by using semiconductor markers the emission wavelength may be tuned to minimize noise from auto fluorescence of biological samples, and semiconductors do not photo-bleach [ 1 ]. Zinc oxide (ZnO) is a direct band gap II-VI semiconductor with wide band gap energy of 3.37 eV at room temperature and a high exciton binding energy of 60 meV [ 2 ]. Since the exciton binding energy in ZnO is greater than the thermal energy (27 meV), emission at biocompatible temperatures are unlikely from thermally induced auto-fluorescence in biological samples. Excitons in ZnO are very stable at room temperature which ensures that its luminescence wi...
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