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1. Synthesis and Photophysics of Highly Luminescent Nanoclusters: Luminescent metal nanoclusters (MNCs) are an emerging class of functional materials for their potential applications in healthcare and energy-related materials because of their high photosensitivity, thermal stability, low toxicity, and biocompatibility. Several protocols have been developed to synthesize metal nanoclusters. Generally, nanoclusters are synthesized using two different protocols, namely top-down and bottom-up approaches. The role of surface-protecting ligands is very crucial to stabilizing nanoclusters and they control the surface properties, size, fluorescence, structures, and optical properties. So, I am interested in developing new synthesis methods and functionalization of nanoclusters that allow us to control the photo-physics of nanoclusters.
2. Aggregation Induced Emission (AIE) Enhancement: Luminescence is the most attractive properties of nanoclusters. However, one of the major concerns for NCs is low quantum yield (QY) which limits their many practical applications in bio-imaging and light-emitting diodes (LEDs). Various strategies have been undertaken to prepare highly luminescent NCs by aggregation-induced emission (AIE) and assembly-induced emission enhancement, etc. AIE is an efficient strategy that has gained significant attention for luminescence enhancement compared to the other methods. My particular interest in this area is surface engineering to control luminescence properties through AIE.
3. Single-Walled Carbon Nanotubes (SWNT): Currently, I'm working on the surface modification, separation, and thermoelectric properties of single-walled carbon nanotubes (SWNT)
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