Smiley face Soumyajit Roy, is at present an Professor (2015-till date) at Indian Institute of Science Education and Research, Kolkata, India and leads Eco-friendly Applied Materials Laboratory, (EFAML) in the Department of Chemical Sciences of IISER-Kolkata. The areas of scientific interests of the laboratory include: Soft-oxometalates (SOMs) and Polyoxometalates (POMs) in photo-catalysis. The overarching objective of the laboratory is to understand how simple interactions can lead to complex materials. Soumyajit is interested in popularization of Science in his mother tongue, Bengali. Soumyajit is a Fellow of the Royal Society of Chemistry (FRSC) and the Royal Society of Arts (FRSA). He also serves as an associate editor of the Journal of Molecular and Engineering Materials (World Scientific) and Frontiers in Chemistry.
Soumyajit was born in Kolkata, India and completed his schooling from Hindu School, Kolkata and later his graduation in Chemistry from St. Xavier’s College, Kolkata. He obtained his M. Sc from Indian Institute of Technology, Delhi, India and his doctorate with a summa cum laude from Universität Bielefeld, Germany, working with Prof. Achim Müller (2005). He thereafter worked as a post-doctoral researcher at van’t Hoff Laboratory for Colloid & Physical Chemistry, Universiteit Utrecht, with Prof. Willem K. Kegel, in the Netherlands (2005-2007) and at BASF SE’s Polymer Research Laboratory, at ISIS, Strasbourg, France (2007-2009). Before joining IISER-Kolkata as an Assistant Professor (2011-2015) he was a Professor at Changshu Institute of Technology, Jiangsu, P. R. China (2010). Soumyajit has also authored a novel, "Flairs of Forgotten Fragrance" (2014) and another book "Dutch Touch" (2010).

We are looking for motivated PhD students and Post-docs.

Research Interests

Soft-oxometalates and Polyoxometalates

Many metals, many oxygen, a molecular cluster with an anionic charge, is what polyoxometalates (POMs) are. En route to synthesis of Smiley facemany crystalline POMs we observe a state where colloidal entities predominate. Likewise after solid POMs on dispersion leads to the same colloidal state. We investigate this colloidal state that precedes and follows the crystalline POMs, the state of soft-oxometalates, SOMs. Investigating the phase behavior of the SOMs and POMs we find that these states manifest as a function of concentration (volume fraction) at a given temperature. It is thus in principle possible to precisely determine the concentration at which crystalline POMs would be obtained. Likewise changing the pH we have been able to show that a colloidal SOM phase precede POM phase. These investigations are carried out using simple and small clusters like those of {Mo7} and {Mo8}. We are now investigating the generality of this phenomenon in the context of other POMs.
CrystEngComm (2014). Doi: 10.1039/C4CE00115J.
CrystGrowthDes 18 (2018) 4068.
Acta C 74 (2018) DOI: 10.1107/S2053229618007143.
Review: CrystEngComm 16 (2014) 4667.

Photo-redox activity of POMs and SOMs: From Water Oxidation, CO2 reduction to Organic reactions and their coupling

Multiple metal centers in POMs and SOMs raises another possibility: photo-redox activity. Exploring the photo-redox activity we have been Smiley faceable to use POMs as homogeneous photo-polymerization catalysts. Transiting to SOM state we have been able to exploit this state as a heterogeneous catalyst for photo-polymerization. Going a step further exploiting the presence of thousands of photo-redox active M=O bonds we have successfully developed a strategy for CO2 reduction to formic acid and formaldehyde coupled with water oxidation and studied their pathway. Going a step beyond we have coupled organic reaction with CO2 reduction and water oxidation.
J. Mater. Chem. A. 4 (2016) 8875.
ACS Appl. Mater. Interfaces 9 (2017) 35086.
ChemCommun 54 (2018) 2369.

On making matter move with SOMs (SOM based Active Matter)

SOMs contain several redox active metal centers and thus they can be rendered active (motile) easily either by redox or photo-redox reactions. We have successfully developed design strategies for the propulsion of several SOM based nanomotors exploiting the latent redox activity utilizing chemical fuels such as, hydrazine, dithionite, bicarbonate. But in practical life such applications are scarce as they are mostly powered by harsh toxic chemicals. Thus our recent efforts have been directed to eliminate the use of toxic fuels and use visible light to achieve motion instead. These SOM based active matter has additionally been utilized for environmental remediation,e.g., for cleaning of waste water.Efforts are underway in our laboratory to carry out directed catalysis using these SOM based active matter.
Nanoscale 10 (2018) 12713.
Front. Chem. 6 (2018) 152.
Review: A. Mallick, S. Roy, “Soft-oxometalates – a new state of oxometalates and their potential applications as nanomotors” in S. Thota, D. Crans (Eds.) "Metal Nanoparticles: Synthesis and Applications in Pharmaceutical Sciences" Wiley-VCH, Weinheim (2018) pp. 83-100.

Electrochemical CO2 Reduction

In addition to photo-chemical CO2 reduction we undertake electrochemical reduction of carbon dioxide to generate carbon rich fuelsand important chemicals like formaldehyde, formic acid, methanol, ethanol, acetaldehyde, acetic acid etc. In our lab we are trying to understand the catalytic approach towards the selectivity of carbon rich products and tuning the key catalytic features in the electro-catalysts in order to make themusefulto meet industrial needs.



80. S.Paul, S.Gonglach, M. Haas, F.Pillwein, S. S. Sreejith, S. Barman, R. De, S.Müllegger, P.Gerschel, U-P.Apfel, H. Coskun, A. Aljabour, P. Stadler, W.Schöfberger*, S. Roy*, Nat. Commun. 10, Article number: 3864 (2019). (SP, SG contributed equally).
79. S. Barman, S. Sreejith, S. Garai, R. Pochamoni, S. Roy*, “Selective Photocatalytic Carbon Dioxide Reduction by a Reduced Molybdenum‐Based Polyoxometalate Catalyst”, ChemPhotoChem 3 (2019) 93.
78. S. Das, K. Das, C. Kuebel, S. Roy*, “Light Driven Water Oxidation Coupled With C‐N Coupling Reaction Using a Hybrid CuPW12O40 Based Soft-Oxometalate”, ChemSelect 4 (2019) 1994.
77. P. Thomas, S. Ghosh, A. Mallick, A. Banerjee, S. Roy*, “Inexpensive Design of a Bio‐Chip for Disease Diagnostics: Molecular Biomarker Sensing Microchip Patterned from a Soft Oxometalate‐Perylene‐Based Hybrid Composite using Thermo‐Optical Laser Tweezers”, EurJInorgChem 3-4 (2019) 469.


76. A. Mallick, S. Roy*, “Visible light driven catalytic gold decorated softoxometalate (SOM) based nanomotors for organic pollutant remediation”, Nanoscale (2018) DOI: 10.1039/c8nr03534b (Selected as a hot paper. Highlighted in The Hindu, India’s premier Newspaper.)
75. S. Barman, S. Das, S. S. Sreejith, S. Garai, R. Pochamoni and S. Roy*, "Selective light driven reduction of CO2 to HCOOH in water using a {MoV9}n (n = 1332–3600) based soft-oxometalate (SOM)" ChemCommun 54 (2018) 2369.
74. J. Lodh, A. Mallick, S. Roy*, “Light-driven carbon dioxide reduction coupled with conversion of acetylenic group to ketone by a functional Janus catalyst based on keplerate {Mo132}” J. Mater. Chem. A (2018) DOI: 10.1039/c8ta06243a.
73. P. Thomas, S. Chandel, A. Mallick, S. S. Sreejith, N. Ghosh, S. Roy*, “Studying the Crystallization of Polyoxometalates from Colloidal Softoxometalates” CrystGrowthDes 18 (2018) 4068. (Selected as cover article).
72. A. Mallick, S. Roy*, “Soft-oxometalates – a new state of oxometalates and their potential applications as nanomotors” in S. Thota, D. Crans (Eds.) "Metal Nanoparticles: Synthesis and Applications in Pharmaceutical Sciences" Wiley-VCH, Weinheim (2018) pp. 83-100.
71. A. Mallick, A. Laskar, R. Adhikari, S. Roy*, “Redox Reaction Triggered Nanomotors Based on Soft-Oxometalates With High and Sustained Motility”, Frontiers in Chemistry, (2018) DOI: 10.3389/fchem.2018.00152.
70. S. Das, T. Balaraju, S. Sreejith, R. Pochamoni, S. Roy*, “A Molecular CO2 Reduction Catalyst Based on Giant Polyoxometalate {Mo368}”Frontiers in Chemistry, (2018) 10.3389/fchem.2018.00514.
69. S. Paul, S. S. Sreejith, S. Roy*, “pH-induced phase transition and crystallization of softoxometalates into polyoxometalates: a study on crystallization from colloids” ActaCrystaC (2018) DOI: 10.1107/S2053229618007143.
68. P. Thomas, S. Ghosh, A. Mallick, A. Banerjee, S. Roy*, "Inexpensive Design of Bio-Chip for Disease Diagnostics: Microchip Patterned from a Soft oxometalate-Perylene based Hybrid Composite using Thermo-optical Laser Tweezers", Eur J Inorg Chem (2018) doi: 10.1002/ejic.201800623.
67. S.Das , T.Balaraju , S. Barman , S. S. Sreejith , R.Pochamoni, S. Roy*, “A Molecular CO2 Reduction Catalyst Based on Giant Polyoxometalate {Mo368}”, Frontiers in Chemistry, (2018) 10.3389/fchem.2018.00514.
66. S. Barman, S. S. Sreejith, S.Garai, R. Pochamoni, S. Roy*, “Selective Photocatalytic Carbon Dioxide Reduction by a Reduced Molybdenum‐Based Polyoxometalate Catalyst”, ChemPhotoChem (2018) DOI: 10.1002/cptc.201800210.
65. P. Liang, J. Jiang, Q. Ding, X. Tang, S. Roy*, “Memory Load Influences Taste Sensitivities,” Frontiers in Psychology, (2018) doi: 10.3389/fpsyg.2018.02533.
64. S. Biswas, R. Pochamoni, S. Roy*, “Visible-Light-Driven Carbon Dioxide Reduction Coupled with Water Oxidation by a Composite Soft-Oxometalate (SOM) System” Chemistry Select 3 (2018) 2649.


63. S. Das, S. Roy*, "Photochemical water oxidation using {PMo12O40@Mo72Fe30}n based soft-oxometalate", J. Mol. Eng. Mater. 5 (2017) 1750001.
62. S. Das, S. Kumar, S. Garai, R. Pochamoni, S. Paul, and S. Roy, "Softoxometalate [{K6.5Cu(OH)8.5(H2O)7.5}0.5@{K3PW12O40}]n (n = 1348−2024) as an Efficient Inorganic Material for CO2 Reduction with Concomitant Water Oxidation" ACS Appl. Mater. Interfaces 9 (2017) 35086.
61. S. Ghosh, S. Das, S. Paul, P. Thomas, B. Roy, P. Mitra, S. Roy and A. Banerjee, "In situ self-assembly and photopolymerization for hetero-phase synthesis and patterning of conducting materials using soft oxometalates in thermo-optical tweezers" J. Mater. Chem. C. (2017) doi: ​10.1039/C7TC01941F


60. S. Das, S. Roy, "Photochemical water oxidation using {PMo12O40@Mo72Fe30}n based soft-oxometalate", J. Mol. Eng. Mater. (2016) (in press).
59. A. Mallick, S. Roy, "Autonomous movement in mixed metal based soft-oxometalates induced by CO2 evolution and topological effects on their propulsion", RSC Advances (2016) DOI:10.1039/C6RA24132H.
58. S. Biswas, D. Melgar, A. Srimany, A. Rodrigues-Fortea, T. Pradeep, C. Bo, J. M. Poblet, S. Roy, "Direct Observation of the Formation Pathway of [Mo132] Keplerates", Inorg. Chem. 55 (2016) 8285.
57. S. Barman, B. Parasar, P. Kundu, S. Roy, "A Copper based Catalyst for Poly-Urethane synthesis from Discarded Motherboard," RSC Advances, 6 (2016) 75749.
56. S. Das, S. Biswas, T. Balaraju, S. Barman, R. Pochamoni, S. Roy, "Photochemical Reduction of Carbon Dioxide Coupled with Water Oxidation using Various Soft-oxometalate (SOM) based Catalytic Systems," J. Mater. Chem. A. 4 (2016) 8875. Highlighted by Nature India.
​55. S. Das, A. Misra, S. Roy, "Light driven decarboxylative cross coupling of acrylic acid and iodobenzene using [Mo132] type Keplerate as a catalyst," Inorg. Chim. Acta. (2016) (in press) [Invited special issue titled, "Inorganic Chemistry - The Next Generation"].
54. P. Liang, P. Biswas, S. Vinnakota, L. Fu, M. Chen, Y. Quan, Y. Zhan, G. Zhang, S. Roy, "Invariant effect of vision on taste across two Asian cultures: India and China," J. Sensory Studies (2016) (in press).
53. S. Das, S. Roy, "A Newly Designed Softoxometalate [BMIm]2[DMIm][α-PW12O40]@Hydrocalumite that Controls the Chain Length of Polyacrylic Acid in Presence of Light", RSC Advances 6 (2016) 37583.
52. P. Thomas, S. Ghosh, S. Roy, "Epoxidation of alkenes on Soft Oxometalate (SOM) based trails patterned by using laser of optical tweezers set up", Chem. Select 1 (2016) 805.
51. A. Mallick, S. Roy, “Soft-oxometalates – a new state of oxometalates and their potential applications as nanomotors” in S. Thota, D. Crans (Eds.) "Metal Nanoparticles: Synthesis and Applications in Pharmaceutical Sciences" Wiley-VCH, Weinheim (2016) (in press).
50. S. Das, D. Lai, A. Mallick, S. Roy, "Photo Redox Mediated Inexpensive One-Pot Synthesis of 1,4-Diphenyl Substituted Butane-1,4-Dione from Styrene using Polyoxometalates as Catalysts", Chem. Select 1 (2016) 691.
49. S. Das, A.Misra, S. Roy, "Enhancement of Photochemical Heterogeneous Water Oxidation by Manganese Based Soft oxometalate Immobilized on Graphene Oxide Matrix", New J. Chem 40 (2016) 994.
48. A. Mallick, D. Lai, S. Roy, "Autonomous movement induced in chemically powered active soft-oxometalates using dithionite as fuel", New J. Chem. 40 (2016) 1057.
47. S. Biswas, E. Mani, A. Mandal, A. Tiwari, S. Roy, "Supramolecular Polyelectrolyte Complex (SPEC): pH Dependent Phase Transition and Exploitation of its Carrier Properties", Soft Matter, 12 (2016) 1989. Selected as Feature Article, Inside Front Cover.
46. D. Crans, S. Roy, "Introduction for the Emergent Polyoxometalates and Soft-oxometalates Thematic Issue", New J. Chem. 40 (2016) 882.
45. S. Biswas, S. Vinnakota, S. Roy, "Soft-matter led Hardening of Concrete: Enhancement of Compressive and Thermal Strength of Concrete by Polymer and Nanoparticles", RSC Advances 6 (2016) 7933.


44. S. Das, S. Kumar, A. Mallick, S. Roy, "Competitive self-assembly manifests supramolecular Darwinism in Soft-oxometalates", J. Mol. Eng. Mater. 3 (2015) 1540008.
43. K. Das, S. Roy, "Direct Synthesis of Controlled-Size Nanospheres inside Nanocavities of Self-Organized Photopolymerizing Soft Oxometalates [PW12O40]n (n=1100–7500)", Chem. Asian J. 10 (2015) 1884. Selected as Featured Article and Back Cover.
42. P. Thomas, C. Pei, B. Roy, S. Ghosh, S. Das, A. Banerjee, T. Ben, S. Qiu, S. Roy, "Site specific supramolecular heterogeneous catalysis by optically patterned soft oxometalate–porous organic framework (SOM–POF) hybrid on a chip", J. Mater. Chem. A. 3 (2015) 1431. Selected as a cover article.
41. S. Xu, S. Roy, T. Ben, C. Pei, S. Qiu, "Enhanced recognition of a nitrogen containing organic compound by adjusting the acidity of the porous organic frameworks base (JUC-Z2)", J. Mater. Chem. A. 3 (2015) 2628.


40. S. Das, P. Thomas, S. Roy, "Photoinduced Topological Transformation in Mesoscopic Inorganic Nanoparticles: Application as a UV Sensor", Eur. J. Inorg. Chem. 27 (2014) 4551.
39. S. Biswas, S. Roy, "Soft-oxometalates: Patterning and Catalysis", J. Mater. Nanosci. 1 (2014) 1. (Prof. C. N. R. Rao Special Inaugural Issue)
38. B. Roy, N. Ghosh, A. Banerjee, S. Dutta Gupta and S. Roy, "Manifestations of geometric phase and enhanced spin Hall shifts in an optical trap", New J. Phys. 16 (2014) 083037.
37. S. Roy, "Soft-oxometalates beyond crystalline polyoxometalates: formation, structure and properties", CrystEngComm 16 (2014) 4667. Selected as Cover page for the India Issue of CrystEngComm to celebrate year of crystallographhy. For the article click here.
36. A. Sahasrabudhe, S. Roy, "Photoactive gold nanoparticle softoxometalates (SOM) using a Keplerate for synthesis of polystyrene latex microspheres by photo-polymerization", J. Mol. Eng. Mater. 2 (2014) 1440002, doi: 10.1142/S2251237314400024.
35. S. Roy, A. Hor, "Soft-oxometalates (SOMs): Toward new oxometalate based materials", J. Mol. Eng. Mater. 2 (2014) 1402001, doi: 10.1142/S2251237314020018.
34. B. Roy, N. Ghosh, P. Panigrahi, A. Banerjee, A. Sahasrabudhe, B. Parasar, S. Roy, "Micro-optomechanical movements (MOMs) with soft-oxometalates: Controlled motion of single soft-oxometalate peapods using exotic optical potentials", J. Mol. Eng. Mater. 2 (2014) 1440006, doi: 10.1142/S2251237314400061.
33. S. Roy, "Molybdenum blue: A rendezvous with colloid and coordination chemistry" in V. S. Saji, S. I. Lopatin (Eds.) Molybdenum and its Compounds: Applications, Electrochemical properties and Geological implications, Nova Science Publishers, (2014).
32. Y. Li, S. Roy, T. Ben, S. Xu, S. L. Qiu, "Micropore Engineering of Carbonized Porous Aromatic Framework (PAF-1) for Supercapacitors Application", PhysChemChemPhys (2014) doi: 10.1039/C4CP00550C.


31. D. Chen, A. Sahasrabudhe, W. Peng, A. Dasgupta, R. Yuan, S. Roy, "Synthesis and properties of a novel quarternerized imidazolium [α-PW12O40] salt as a recoverable photo-polymerization catalyst" Dalton Trans. 42 (2013) 10587.
30. B. Roy, M. Arya, P. Thomas, J. Jürgschat, K. Rao , A. Banerjee, C. M. Reddy, S. Roy, "Self-Assembly of Mesoscopic Materials To Form Controlled and Continuous Patterns by Thermo-Optically Manipulated Laser Induced Microbubbles", Langmuir 29 (2013) 14733.
29. P. Liang, S. Roy, M. Chen, G. Zhang, "Visual influence of shapes and semantic familiarity on human sweet sensitivity", Behavioural Brain Research, 253 (2013) 42. [For a popular highlight on the work see: G. S. Mudur's article in The Telegraph]
28. B. Roy, N. Ghosh, S. Dutta Gupta, P. Panigrahi, S. Roy, A. Banerjee, "Controlled transportation of mesoscopic particles by enhanced spin-orbit interaction of light in an optical trap", Physical Review A 87 (2013) 043823.
27. D. Chen, X. Wang, G. Yang, Q. Li, W. Chai, R. Yuan, S. Liu, F. Gao, J. Fei; H. Jin, S. Roy, J. Mol. Catal. A: 363-364 (2012) 195.
26. Y. Ma, W. Yin, W. Cai, P. Zhu, X. Tang, R. Yuan, S. Roy, "Eight novel metal diphosphonates based on 2-(4-pyridinyl)-1-hydroxyl-1,1-ethylidenediphosphonate: syntheses, structures, and magnetic properties", RSC Advances (2013) doi: 10.1039/c3ra43137a.


25. F. Xue, D. Yuan, A. Sahasrabudhe, S. Biswas, P. Wang, X. Tang, D. Chen, R. Yuan, S. Roy, “Supramolecular Thermo Aero-able Gelators (STAGs) for synthesis of hydrogels,” New J. Chem. 36 (2012)2541.
24. E. Mani, E. Sanz, S. Roy, M. Dijkstra, J. Groenewold, W. K. Kegel, “Sheet-like assemblies of spherical particles with point-symmetrical patches,” Journal of Chemical Physics 136 (2012) 144706.
23. Y. Ma, X. Tang, W. Yin, B. Wu, F. Xue, R. Yuan, S. Roy, “Zinc and cadmium 2-pyrazinephosphonates: Syntheses, structures and luminescent properties” Dalton Transactions 41 (2012) 2340
22. Y. Ma, X. Tang, F. Xue, B. Chen, Y. Dai, R. Yuan, S. Roy, Eur. J. Inorg. Chem. “Structural Diversity and Magnetic Properties of the Manganese(II)/Carbazol-9-ylacetate/N,N'-Donor Reaction System,” 2012 (2012) 1243.


21. S. Roy, “Soft-Oxo Metalates (SOMs): A Very Short Introduction” Comments Inorg. Chem. 32 (2011) 113.
20. H. Ji, G.Yang, H.Ni, S. Roy, J. Pinto, X. Jiang, „General synthesis and morphology control of LiMnPO4 nanocrystals via microwave-hydrothermal route”, Electrochim Acta (2011) 10.1016/j.electacta.2011.01.079
19. G. Yang, H. Ji, P. Gao, A. Hong, H. Ding, S. Roy, J. Pinto, X. Jiang, “Crystal Structure and Electrochemical Performances of Proton-Substituted Li2MnO3 and the Nanocomposites Treated by LiMnO2” J. Electrochem. Soc., 158(10) (2011) A1071.
18. G. Yang, H. Ni, H. Liu, P. Gao, H. Ji, S. Roy, J. Pinto, X. Jiang, „The doping effect on the crystal structure and electrochemical properties of LiMnxM1−xPO4 (M= Mg, V, Fe, Co, Gd)”, J. Power Source 196 (2011) 4747.


17. S. J Veen, S. Roy, A. V. Petukhov, M. Versluijs, F. Soulimani, and W. K. Kegel, “Extended Structure Design with Simple Molybdenum Oxide Building Blocks and Urea As a Directing Agent”, Inorg. Chem. 47 (2008) 6863.
16. S. Roy, H. J. D. Meeldijk, A. V. Petukhov, M. Versluijs and F. Soulimani, “Synthesis and characterization of {Mo72Fe30}-coated large hexagonal gibbsite gamma-Al(OH)3 platelets”, Dalton Trans., 21 (2008) 2861.
15. S. Roy, L. C. A. M. Boissers, H. J. D. Meeldijk, B. Kuipers, and W. K. Kegel, “Directed Synthesis of Stable Large Polyoxomolybdate Spheres”, Langmuir, 24 (2008) 666.
14. S. Roy, K. L. Planken, R. Kim, D. Mandele, W. K. Kegel, “Direct Evidence on the Existence of [Mo132] type Species in Aqueous Solution”, Inorganic Chem. 46 (2007) 8469.
13. A. Verhoeff, M. L. Kistler, A. Bhatt, J. Pigga, J. Groenewold, M. Klokkenburg, S. Veen, S. Roy, T. Liu and W. K. Kegel, “Charge regulation as a stabilization mechanism for shell-like assemblies of polyoxometalates”, Phys. Rev. Lett. 99 (2007) 066104.
12. S. Roy, M. Rijneveld-Ockers, J. Groenewold, B. Kuipers, H. Meeldijk and W. K. Kegel, “Spontaneous Formation of Micrometer-Size ‘Inorganic Peapods’”, Langmuir, 23 (2007) 5292.
11. S. Roy, M. Mourad, M. Rijneveld-Ockers, “Synthesis of large surface hexagonal polyoxometalate platelets,” Langmuir, 23 (2007) 399.
10. S. Roy, “Giant Polyoxomolybdates: Synthesis, Structure and Stability Studies.” Doctoral Dissertation, Uni-Bielefeld, Germany.
9. A. Müller, S. Roy, “En route from the mystery of molybdenum blue via the related manipulateable building blocks to aspects of materials science.” Education in advanced chemistry, 9 (2005) 15.
8. A. Müller, S. Roy, “Linking giant novel polyoxomolybdates in solid- state, solution and gas-phase.” Eur. J. Inorg. Chem. (2005) 3561.
7. A. Müller, S. Roy, “Metal-oxide based porous capsules/artificial cells with unprecedented material properties.” J. Mater. Chem. 15 (2005) 4673.
6. A. Müller, S. Roy, “Oxomolybdates: From structures to functions in a new era of nanochemistry” in: C. N. R. Rao, A. Müller, A. K. Cheetham (Eds) Recent Advances in the Chemistry of Nanomaterials, Wiley-VCH, Weinheim, (2004).
5. A. Müller, S. Roy, “En route from the mystery of molybdenum blue via the related manipulateable building blocks to aspects of materials science.” Coord. Chem. Rev. 245 (2003) 153.
4. A. Müller, S. K. Das, S. Talismanov, S. Roy, E. Beckmann, H. Bögge, M. Schmidtmann, A. Merca, A. Berkle, L. Allouche, Y. Zhou, L. Zhang, “Trapping cations in specific positions in tunable artificial cell channels: new nanochemistry perspectives.” Angew. Chem. Int. Ed. 42 (2003) 5039.
3. A. Müller, E. Krickemeyer, H. Bögge, M. Schmidtmann, S. Roy, A. Berkle, “Changeable pore sizes allowing effective and specific recognition by a molybdenum-oxide based nanosponge: en route to sphere-surface and nanoporous-cluster chemistry.” Angew. Chem. Int. Ed. 41 (2002) 3604.
2. A. Müller, S. Roy, “Metal-oxide based nanoobjects: reactivity, building blocks for polymeric structures and structural variety.” Russ. Chem. Revs. 71 (2002) 981.
1. A. Müller, S. Roy, M. Schmidtmann and H. Bögge, “Urea as dues ex machine in giant molybdenum blue type cluster synthesis: an unusual hybrid compound with perspectives for related nano, supramolecular and extended structures.” Chem. Commun. (2002) 2000.

Popular Science Articles in Bengali

1. S. Roy, A. Müller, “Quest for beauty through lenses of molecules.” Desh (Bengali literary magazine), 22 (2002) 44.
2. S. Roy,“Collage of miscommunication in canvas of science“, Jigyasa (Ed. Sibnarayan Roy), 1-2 (2011) 151.
3. S. Roy, „What is truth?“ Jigyasa (Ed. Sibnarayan Roy), 4 (2011) 72.
4. S. Roy, “Remembering A. P. C. Rây on his 150th birth anniversary”, Jigyasa (Ed. Sibnarayan Roy) 3 (2012) 48. [This essay is based on an invited lecture given at National Library, Kolkata, on August 19, 2011. The lecture was also highlighted in The Telegraph.]
5. S. Roy, "When metal-oxides are soft" Samatat 3 (2013) 73.

Patents filed

1. C. Cimpeanu, T. Breiner, D. Urban, V. Schädler, R. Feuerhake, S. Roy, M. Awkal, Process for Manufacture of Packaging with Grease Barrier Properties, Publication Number: WO/2010/020581, International Application No. PCT/EP2009/060495.
2. C. Cimpeanu, T. Breiner, D. Urban, K-. H. Schumacher, A. Weiss, A. Meyer, S. Roy, Use of Polyelectrolyte Complexes as Plasticizer Barriers, Publication number: WO/2011/020769, International Application No. PCT/EP2010/061759. (International Patent Awarded.)
3. R. Yuan, D. Chen, X. Y. Tang, X. F.-Feng, S. Roy, Process for manufacturing acrylate based superabsorber, Application Number: 201010506189.3, Publication Number: CN 101967208A.
4. C. Dianyu, R. Yuan, C. Wen, Y. Ma, S. Roy, Manufacturing and application of tungsten and molybdenum polyxometalate supermolecule, Application Number: 201010297714.5.
5. R. Yuan, C. Ning, X. Y. Tang, Y. Dandan, X. F.- Feng, G. Wenjing, L. Ping, S. Roy, Manufacturing poly-ammonium ester from recycle materials or castoff, Application Number: 201010613157.3.
6. W. Chai, X. Ding, R. Yuan, D. Chen, S. Roy, Application of polyoxometalate-ionic liquid solution in heterogenous catalysis of olefenic double bonds. Application Number: 201010613387.3.

Soumyajit Roy Group

Current group

2017-2018 group

2016-2017 group

2014-2015 group

2012-2013 group

Apabrita Mallick

Working on SOM based nano-motors and their applications for water purification
“Good books bring out the best qualities in me”

Joyeeta Lodh

Working on carbon dioxide valorization coupled with organic reactions
“I love doodling pictures on the back of my notebook”

Soumitra Barman

Working on photochemical carbon dioxide reduction
“Nothing like a warm bowl of mutton curry”

Kousik Das

Working on material synthesis and catalysis
“Music makes me feel alive”

Shounik Paul

Working on electrochemical carbon dioxide reduction
“Eminem rules my world”

Rakesh Sen

Working on catalytic applications of POM and SOM based systems
“Foodie and passionate about recitation”

Ratnadip De

Working on photo and electrochemical carbon dioxide reduction
“Huge CR7 fan and addicted to TBBT”