Assistant Professor

Dr. Sabyasachi Chakrabortty

Department of Chemistry


  1. Synthesis of Metal-Semiconductor Hybrid Nanomaterials for Multi-modal Functionalities
  2. Understanding the Fundamentals of Controlled Assembly with Inorganic Nanocrystals, i.e., Polymerizations at Mesoscale.
  3. Functional Nanomaterials for Theranostic Applications



Ramakrishna Mission Residential College, Narendrapur (University of Calcutta)
B.Sc (Hons.)


Indian Institute of Technology – Madras (IIT-M)


National University of Singapore


  • 2014 - 2017, Senior Postdoctoral Fellow,  Max-Planck-Institute for Polymer Research, Germany and Universität Ulm, Germany
  • 2012 - 2014, Postdoctoral Fellow, National University of Singapore, Singapore.
  • 2009, Visiting Scientist (Funded by JSPS), Institute for Molecular Science, Okazaki, Japan.
  • 2007, Summer Intern, Hindustan Unilever Limited, Bengaluru, India.

Awards & Fellowships

  • 2012 – Best Graduate Researcher Award – Department of Chemistry, National University of Singapore, Singapore. 
  • 2010/2011 – Kiang Ai Kim Award – Department of Chemistry, National University of Singapore, Singapore (Most prestigious award for graduate researchers in NUS).
  • 2008 – Research Scholarship – Department of Chemistry, National University of Singapore, Singapore.
  • 2006-2008 – Institute Merit Scholarship for Outstanding Academic Performance during M. Sc. – Indian Institute of Technology Madras, India.
  • 2008 – CSIR-NET and GATE – India.


  • Asymmetric Dumbbells from Selective Deposition of Metals on Seeded Semiconductor Nanorods. Chakrabortty, S.; Yang, J. A.; Tan, Y. M.; Mishra, N.; Chan, Y. Angew. Chem. Int. Ed. 2010, 49, 2888–2892 (2010).
  • pH-Responsive Quantum Dots via an Albumin-Polymer Surface Coating. Wu, Y.; Chakrabortty, S.; Gropeanu, R. a; Wilhelmi, J.; Xu, Y.; Er, K. S.; Kuan, S. L.; Koynov, K.; Chan, Y.; Weil, T. J. Am. Chem. Soc. 14, 5012–5014 (2010).
  • Enhanced Tunability of the Multiphoton Absorption Cross-Section in Seeded CdSe/CdS Nanorod Heterostructures. Xing, G.; Chakrabortty, S.; Chou, K. L.; Mishra, N.; Huan, C. H. A.; Chan, Y.; Sum, T. C. Appl. Phys. Lett. 97, 8–11 (2010).
  • Engineering Fluorescence in Au-Tipped, CdSe-Seeded CdS Nanoheterostructures. Chakrabortty, S.; Xing, G.; Xu, Y.; Ngiam, S. W.; Mishra, N.; Sum, T. C.; Chan, Y. Small 7, 2847–2852 (2011).
  • Three-Photon Absorption in Seeded CdSe/CdS Nanorod Heterostructures. Xing, G.; Chakrabortty, S.; Ngiam, S. W.; Chan, Y.; Sum, T. C. J. Phys. Chem. C 115, 17711–17716 (2011).
  • Unusual Selectivity of Metal Deposition on Tapered Semiconductor Nanostructures. Mishra, N.; Lian, J.; Chakrabortty, S.; Lin, M.; Chan, Y Chem. Mater. 24, 2040–2046 (2012).
  • Ultralow-Threshold Two-Photon Pumped Amplified Spontaneous Emission and Lasing from Seeded CdSe/CdS Nanorod Heterostructures. Xing, G.; Liao, Y.; Wu, X.; Chakrabortty, S.; Liu, X.; Yeow, E. K. L.; Chan, Y.; Sum, T. C. ACS Nano 6, 10835–10844 (2012).
  • Self-Assembled Mononuclear palladium(II) Based Molecular Loops. Sahoo, H. S.; Tripathy, D.; Chakrabortty, S.; Bhat, S.; Kumbhar, A.; Chand, D. K.  Inorganica Chim. Acta 400, 42–50 (2013).
  • Promoting 2D Growth in Colloidal Transition Metal Sulfide Semiconductor Nanostructures via Halide Ions. Wu, W.-Y.;† Chakrabortty, S.;† Chang, C. K. L.; Guchhait, A.; Lin, M.; Chan, Y. Chem. Mater. 26, 6120–6126 (2014).† equal contribution
  • Dual Wavelength Electroluminescence from CdSe/CdS Tetrapods. Wong, J. I.; Mishra, N.; Xing, G.; Li, M.; Chakrabortty, S.; Sum, T. C.; Shi, Y.; Chan, Y.; Yang, H. Y. ACS Nano 8, 2873–2879 (2014).
  • Observation of an Excitonic Quantum Coherence in CdSe Nanocrystals. Dong, S.; Trivedi, D.; Chakrabortty, S.; Kobayashi, T.; Chan, Y.; Prezhdo, O. V.; Loh, Z. H. Nano Lett. 15, 6875–6882 (2015).
  • Gene Detection in Complex Biological Media Using Semiconductor Nanorods within an Integrated Microfluidic Device. Bi, X.; Adriani, G.; Xu, Y.; Chakrabortty, S.; Pastorin, G.; Ho, H. K.; Ang, W. H.; Chan, Y. Anal. Chem. 87, 10292–10298 (2015).
  • Cation Exchange Synthesis of Uniform PbSe/PbS Core/Shell Tetrapods and their use as Near-Infrared Photodetectors. Mishra, N.; Mukherjee, B.; Xing, G.; Chakrabortty, S.; Guchhait, A.; Lim, J.Y. Nanoscale, 8, 14203–14212 (2016).
  • Facet to Facet Linking of Shape Anisotropic Inorganic Nanocrystals with Site Specific and Stoichiometric Control. Chakrabortty, S.; Guchhait, A.; Ong, X.; Mishra, N.; Wu, W.-Y.; Jhon, M. H.; Chan, Y. Nano Lett. 16, 6431–6436 (2016).
  • Fluorescent Nanodiamond–Gold Hybrid Particles for Multimodal Optical and Electron Microscopy Cellular Imaging. Liu, W.; Naydenov, B.; Chakrabortty, S.; Wuensch, B.; Hübner, K.; Ritz, S.; Cölfen, H.; Barth, H.; Koynov, K.; Qi, H.; Leiter, R.; Reuter, R.; Wrachtrup, J.; Boldt, F.; Scheuer, J.; Kaiser, U.; Sison, M.; Lasser, T.; Tinnefeld, P.; Jelezko, F.; Walther, P.; Wu, Y.; Weil, T.  Nano Lett. 16, 6236–6244 (2016). (This work is highlighted in Nature News and Views as Nature, 539, 505–506 (2016))
  • GaInN Quantum Wells as Optochemical Transducers for Chemical Sensors and Biosensors. Heinz, D.; Huber, F.; Spiess, M.; Asad, M.; Wu, L.; Rettig, O.; Wu, D.; Neuschl, B.; Bauer, S.; Wu, Y.; Chakrabortty, S.; Hibst, N.; Strehle, S.; Weil, T.; Thonke, K.; Scholz, F. IEEE J. Sel. Top. Quantum Electron. 23, 1900109 (1-9) (2017).
  • Solution-Processed 2D PbS Nanoplates with Residual Cu2S Exhibiting Low Resistivity and High Infrared Responsivity. Wu, W.-Y.;† Chakrabortty, S.;† Guchhait, A.; † Wong, G. Y. Z.; Dalapati, G. K.; Lin, M.; Chan, Y. Chem. Mater. 28, 9132-9138 (2016).
  • †equal contribution
  • Three-dimensional time lapse imaging of live cell mitochondria with photothermal optical lock-in optical coherence microscopy. Sison, M.;† Chakrabortty, S.;† Extermann, J.; Nahas, A.; Weil, T.; Lasser, T. Scientific Reports, 7, 43275 (2017).
  • †equal contribution
  • Mitochondria Targeted Protein-Ruthenium Photosensitizer for Efficient Photodynamic Applications. Chakrabortty, S.; Agrawalla, B. K.; Stumper, A.; Vegi, N. M.; Fischer, S.; Reichardt, C.; Kögler, M.; Dietzek, B.; Feuring-Buske, M.; Buske, C.; Rau, S.; Weil, T. J. Am. Chem. Soc., 139, 2512-2519 (2017).
  • NIR-emitting and Photo-thermal Active Nanogold for Mitochondria Targeting.  Chakrabortty, S.; Sison, M.; Wu, Y.; Ladenburger, A.; Pramanik, G.; Biskupek, J.; Extermann, J.; Kaiser, U.; Lasser, T.; Weil, T. Biomater. Sci. 5 (5), 966-971 (2017).
  • Facet-to-facet Linking of Shape-anisotropic Colloidal Cadmium Chalcogenide Nanostructures. Ong, X.; Gupta, S.; Wu, W. Y.; Chakrabortty, S.; Chan, Y. J. Vis. Exp. 126, e56009 (doi:10.3791/56009) (2017).
  • Hierarchical Multicomponent Nanoheterostructures via Facet to Facet Attachment of Anisotropic Semiconductor Nanoparticles. Gupta, S.; Wu, W.-Y.; Chakrabortty, S.; Li, M.; Wang, Y.; Ong, X.; Chan, Y. Chem. Mater. 29, 9075-9083 (2017).

Contact Details

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