Associate Professor

Dr Sabyasachi Chakrabortty 

Department of Chemistry


  1. Colloidal Nanocrystals.
  2. Facet Engineering.
  3. Theranostics Nanoconjugates.
  4. Carbon Materials.



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.


  • Synthesis of Metal-Semiconductor Hybrid Nanomaterials for Multi-modal Functionalities
  • Understanding the Fundamentals of Controlled Assembly with Inorganic Nanocrystals, i.e., Polymerizations at Mesoscale.
  • Functional Nanomaterials for Theranostic Applications.
  • Sensing Bio-relevant Entities with Nano-carbon materials.

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. Chem. Int. Ed. 2010, 49, 2888–2892 (2010). (Impact Factor –11.99)
  • 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. Am. Chem. Soc. 14, 5012–5014 (2010).(Impact Factor –13.86)
  • 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. Phys. Lett. 97, 8–11 (2010).(Impact Factor –3.41)
  • 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).(Impact Factor –8.32)
  • Three-Photon Absorption in Seeded CdSe/CdS Nanorod Heterostructures. Xing, G.;Chakrabortty, S.; Ngiam, S. W.; Chan, Y.; Sum, T. C. Phys. Chem. C 115, 17711–17716 (2011).(Impact Factor –4.54)
  • Unusual Selectivity of Metal Deposition on Tapered Semiconductor Nanostructures. Mishra, N.; Lian, J.; Chakrabortty, S.; Lin, M.; Chan, Y Mater. 24, 2040–2046 (2012).(Impact Factor –9.47)
  • 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).(Impact Factor –13.94)
  • Self-Assembled Mononuclear palladium(II) Based Molecular Loops.Sahoo, H. S.; Tripathy, D.; Chakrabortty, S.; Bhat, S.; Kumbhar, A.; Chand, D. K. Acta 400, 42–50 (2013).(Impact Factor –2.05)
  • 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. Mater. 26, 6120–6126 (2014).†equal contribution.(Impact Factor –9.47)
  • 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).(Impact Factor –13.94)
  • 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).(Impact Factor –12.71)
  • 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. Chem. 87, 10292–10298 (2015).(Impact Factor –6.32)
  • 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).(Impact Factor –7.37)
  • 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).(Impact Factor –12.71)
  • 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 asNature, 539, 505–506 (2016)).(Impact Factor –12.71)
  • 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).(Impact Factor –3.97)
  • 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. Mater. 28, 9132-9138 (2016).†equal contribution. (Impact Factor –9.47)
  • 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.(Impact Factor –4.26)
  • 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. Am. Chem. Soc., 139, 2512-2519 (2017).(Impact Factor –13.86)
  • 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. Sci. 5 (5), 966-971 (2017). (Impact Factor –4.21)
  • Facet-to-facet Linking of Shape-anisotropic Colloidal Cadmium Chalcogenide Nanostructures.Ong, X.; Gupta, S.; Wu, W. Y.; Chakrabortty, S.; Chan, Y. J. Exp. 126, e56009 (doi:10.3791/56009) (2017).(Impact Factor –1.33)
  • 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).(Impact Factor –9.47)
  • Molecular Insights of Carbon Nanodot Formation and Their Two-Photon Emission Properties. Sabyasachi Chakrabortty, Nilanjon Naskar, Manfred Wagner, Hans Joachim Räder, Haoyuan Qi, Ute Kaiser, Tanja Weil. Advanced Photonics Research, (2021).(Impact Factor –9.47)
  • Efficient Plastic Recycling and Remold Circular Economy using the Technology of Trust – Blockchain. Swikriti Khadke ,Pragya Gupta ,Shanmukh Rachakunta,Chandreswar Mahata ,Suma Dawn ,Mohit Sharma ,Deepak Verma ,Aniruddha Pradhan ,Ambati Mounika Sai Krishna ,Seeram Ramakrishna, Sabyasachi Chakrabortty, Gopalan Saianand, Prashant Sonar, Sajal Biring , Jatindra Kumar Dash,and Goutam Kumar Dalapati . Sustainability, (2021).(Impact Factor –3.88)
  • Copper based Transparent Solar Heat Rejecting Film on Glass through in-situ Nanocrystal Engineering of Sputtered TiO2. Ashwini Nawade, Kunchanapalli Ramya, Sabyasachi Chakrabortty, Gopalan Saianand, Prashant Sonar, Sajal Biring , Jatindra Kumar Dash,and Goutam Kumar Dalapati. Ceramic International, (2021).(Impact Factor –4.5)
  • Tin Oxide for Optoelectronics, Photovoltaic and Energy Storage Devices - A Review. Dalapati., G, Mukhopadhyay, S., Ghosh, Siddhartha., Sabyasachi Chakrabortty,. Journal of Materials Chemistry A, (2021).(Impact Factor –14.51)
  • Electronic structure and origin of intrinsic defects in sputtered HfTiO2 alloy dielectric on Gas surface. Chandreswar Mahata, Mullapudi V.Jyothirmai, Mahesh KumarRavva, Sabyasachi Chakrabortty, Sungjun Kim, Sajal Biring, Seeram Ramakrishna, Goutam Kumar Dalapati. Journal of Alloys and Compounds, (2022).(Impact Factor –6.37)
  • The Multifarious Applications of Copper Nanoclusters in Biosensing and Bioimaging and Their Translational Role in Early Disease Detection. Kumar Babu Busi, Writoban Basu Ball, Sabyasachi Chakrabortty,. Nanomaterials, (2022).(Impact Factor –5.71)

List of Book Chapters

  • “Recent developments in the synthesis of metal-tipped semiconductor nanorods” by Sabyasachi Chakrabortty, Yinthai Chan INTECH Publishers, 2012, Book Name – Nanorods, Chapter 11.

Contact Details

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