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Research Focus
Our ‘Chemistry at nanoscale’ group is interdisciplinary in nature. Group’s research work mainly consists of synthesis of materials in nanoscale, understanding their property, application study and lab scale device fabrication. Research directions are given below:
Mesoporous materials and nanocomposites: Nanoscale structural proficiencies and high surface area in mesoporous materials combined with fascinating properties of metal nanoparticles make the nanocomposites suitable candidate towards adsorption, separation, drug delivery, sensors, catalysis, energy storage and conversion. In this context, we are interested in fabricating hybrid mesoporous oxides with ordered mesopores having different symmetrical pore arrangement by cooperative assembly as well as liquid crystal templating approach. The next challenge is to incorporate/generate metal nanoparticle, graphene dot, semiconductor quantum dots, perovskite etc. inside the mesoporous channel keeping in view the goal to fabricate advanced materials for optoelectronic, catalytic applications.
Controlled synthesis and assembly of metallic nanoparticles: Control on the size, shape and composition of the nanoparticles allow tuning their property and thus it is crucial to customize nanoparticles according to their arena of application. We are interested in designing strategies for synthesizing nanomaterials (monometallic, bimetallic including core-shell and alloy) with controllable size, shape and composition and assembling them in a predetermined fashion. Our aim is to construct functional nanocomposites and use them towards heterogeneous catalysis, bio-sensing and bio-targeting.
Estimation of optical enhancing properties of nanoparticle assemblies and coupled nanostructures: Surface enhanced Raman spectroscopy is capable of probing single molecule and plasmonic nanoparticles are required to provide the electromagnetic field needed for this enhancement. This enhancement can be tailored by the shape, size and composition as well as the extent of coupling between the nanoparticles. We would like to examine the effect on SERS enhancement by different shaped coupled nanostructures and nanoparticle assemblies.
Our research program will help the students to learn nanomaterial synthesis techniques, thin film fabrication, different spectroscopic and analytical techniques including UV/vis, IR, fluorescence, Raman spectroscopy, structural analysis using X-ray diffraction and microscopy such as SEM, TEM, AFM etc.
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Selected Publications
- Takhellambam, D.; Meena, T. R.; Jana, D.* Room temperature synthesis of blue and green emitting CsPbBr3 perovskite nanocrystals confined in mesoporous alumina film, Chem. Commun., 2019, 55, 4785-4788.
- Jana, D.*, Vasista, A. B.; Jog, H.; Tripathi, R. P. N.; Allen, M.; Allen, J.; Kumar, G. V. P. V-shaped active plasmonic meta-polymers, Nanoscale, 2019, 11, 3799-3803.
- Jana, D.*, De, G. How Does “Wormhole” Mesoporous γ‑Alumina Matrix Direct the Morphology of Pt Nanocrystals? Cryst. Growth Des. 2019, 19, 1494−1501.
- Jana, D. ; Gorunmez, Z.; He, J.; Bruzas, I.; Beck, T.; Sagle, L. Surface Enhanced Raman spectroscopy of a Au@Au core-shell structure containing a spiky shell, J. Phys. Chem. C, 2016, 120, 20814-20821.
- Jana, D.; Matti, C.; He, J.; Sagle, L. Capping agent-free gold nanostars show greatly increased versatility and sensitivity for biosensing, Anal. Chem. 2015, 7, 3964-3972.
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