The Nanoscale Spectroscopy and Photoinduced Phenomena Lab 


Four JRF positions are available in the NSPP laboratory. Students with valid CSIR-UGC or INSPIRE fellowships interested to work in the areas specified are welcome to write to Prof. Pradipta Purkayastha (

The bound guest molecules to corresponding hosts may change the morphology of the latter subsequently generating molecular suprastructures that create provisions for trapping ions. The dynamics of the process is understood using various spectroscopic techniques.

We synthesize noble metal nanoparticles and nanoclusters and apply them in drug delivery following biological compatibility. The metal nanoclusters show fluorescence signals as opposed to the nanoparticles that makes them usable as bio-markers. Guest-host chemistry can be applied to develop bio-remedies for various physiological malfunctions.

Photoinduced electron transfer is a smart concept to learn as this encompasses various applications including energy harvesting devices. We use carbon based nanomaterials, including nanoparticles, nanotubes and nanoplatelets to look into interactions with various energy donating/accepting substances in view of understanding the underlying dynamics.

New organic compounds are synthesized in this venture through structural engineering and crystals are produced intuitively so that the materials can be used various applications including light guides, OLEDs, room temperature phosphorescent substances, etc.

These microscopy based techniques are used in our laboratory to justify the positioning of various guests in bio-compatible hosts, such as, lipid vesicles. Entrapment of the fluorescent species within bilayers alters the inherent photophysics of the guests that are significant to understand before applications to drug delivery.

Selected Recent Publications: