Abstract

Quantum dots are semiconducting nanocrystals having dimensions in the range of nanometers that have attracted for their clinical and diagnostic applications Their surface modification or functionalization has been in significant progress over last decades to make them precise nanoprobes for biological imaging This practice is carried out with bioconjugation of prepared quantum dots in to various biological chemical molecules with broad absorption spectra bright emission and photophysical robustness This surface modified quantum dots might be further improved tool for nbsp brain targeted or cell imaging for getting accurate localization of tumor or diseased tissues to achieve effective diagnostic biopsy and complete surgical resection for improved surgical management of brain or cell tumors as improved optical imaging and optical spectroscopy tools

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