Patent
- Amorphous Metal Oxide films, (In area of multifunctional Inorganic coating); Technology is licensed K.L.G. Goh, H.Q. Le, and Ajay Kushwaha International Patent: WO-2,016,039,693 US(WIPO) patent:US20170259300
Books and Book Chapters
6. Engineering of the Metal Oxides Nanostructures for Solar Energy Harvesting Lokanath Mohapatra, Ajay K. Kushwaha, *Optical Properties of Metal Oxide Nanostructures, Springer Nature Singapore (2023): ISBN 978-981-99-5640-1.
5. Graphene and Graphene Derivatives for Wastewater Treatment, Hemen Kumar Kalita*, Biswajit Dehingia, Rajesh Ghosh, Archit Ojha, and Ajay K. Kushwaha, *, Resource Recovery in Drinking Water Treatment, Elsevier, (2023): ISBN:978-0-323-95327-6
4. Two-dimensional (2-D) thermoelectric materials, Ajay K. Kushwaha, Hemen Kalita, Siddhartha Suman, Aditya Bhardwaj, and Rajesh Ghosh,
Thermoelectricity and Advanced Thermoelectric Materials, Woodhead Publishing Series in Electronic and Optical Materials,2021, Pages 233-260.
3. Application of Nanotechnology in Detection and Prevention of Covid-19, Ajay K. Kushwaha, Hemen Kalita, Aditya Bhardwaj, Siddhartha Suman, Biswajit Dehengia, and Rajneesh Kumar Mishra Integrated risk of Covid-19-like outbreaks: Impacts, Resilience and Recommendations, Springer Publishing (2020).
2. Development in electrodes and electrolytes of Dye-sensitized solar cells, Ajay K. Kushwaha, Nagaraju Mokurala, Krishnaiah Mokurala and Siddhartha Suman
Photosynthetic Protein-based photovoltaics, Taylor and Francis (2018).
1. Zinc oxide nanowire films: solution growth, defect states and electrical conductivity, Ajay Kushwaha and Aslam, Advanced Materials for Agriculture, Food and Environmental Safety, WILEY-Scrivener Publishing, LLC, USA (2014).
Journals
2025
76. Iron tuned Ni–Co–Fe alloy films via electrodeposition for hydrogen evolution reaction, Akshay Kumar Sonwane, Lokanath Mohapatra, Sonali Samal, Tushar Chauhan, Ritunesh Kumar, Irina Alexandrovna Kurzina, Mariya Petrovna Shcherbakova-Sandu, Semyon Andreevich Gulevich, Ajay K. Kushwaha, Electrochimica Acta, 2025, 542, 1, 147418.
75. Enhancing the photocatalytic water electrolysis performance of Zn2SnO4 nanostructures via post-synthesis nitrogen doping, Lokanath Mohapatra, Akshay Kumar Sonwane, Sonali Samal, Tushar Chauhan, Parveen Garg, Uday Deshpande, M. K. Tiwari and Ajay K. Kushwaha, Nanoscale, 2025, 2040-3364.
74. Use of Glucose Obtained from Biomass Waste for the Synthesis of Gluconic and Glucaric Acids: Their Production, Application, and Future Prospects, Mariya P. Shcherbakova-Sandu, Eugene P. Meshcheryakov, Semyon A. Gulevich, Ajay K. Kushwaha, Ritunesh Kumar, Akshay K. Sonwane, Sonali Samal and Irina A. Kurzina, Molecules, 2025, 30, 14, 3012.
73. Exploring the Impact of Bi Content in Nanostructured Pd-Bi Catalysts Used for Selective Oxidation of Glucose: Synthesis, Characterization and Catalytic Properties Mariya P. Shcherbakova-Sandu, Semyon A. Gulevich, Eugene P. Meshcheryakov, Kseniya I. Kazantseva, Aleksandr V. Chernyavskii, Alexey N. Pestryakov, Ajay K. Kushwaha, Ritunesh Kumar, Akshay K. Sonwane, Sonali Samal, and Irina A. Kurzina, Inorganics 2025, 13, 205.
72. Substrate and Step Rate Dependence Electrodeposition of Nickel–Cobalt–Molybdenum–Phosphorous Alloy for Efficient Hydrogen Evolution Reaction, Aniket Samanta, Lokanath Mohapatra, Uday Kumar Ghorui, Ajay Rathour, Ajay Kumar Kushwaha, Siddhartha Ghosh, Sudhiranjan Tripathy, Wenjing Guo, Vundrala Sumedha Reddy, Sajal Biring, Sabyasachi Chakrabortty, Goutam Kumar Dalapati, Energy Technology, 2025, 13, 7, 2401232.
71. Synergistic Effects of Layering α-Fe2O3 and NiO for Enhanced Photoelectrochemical Water Splitting, Parveen Garg, Subho Saha, Lokanath Mohapatra, Ajay Kumar Kushwaha, Debalaya Sarker, Uday Deshpande, J. Phys. Chem. C, 2025, 129, 20, 9314–9326.
2024
70. Highly [210] Oriented Porous α-Fe2O3/Fe3O4/ Fe Mesocrystalline Photoanode for Efficient Water Splitting, Parveen Garg, Lokanath Mohapatra, Ajay Kumar Poonia, Ajay Kumar Kushwaha, Kumaran Nair Valsala Devi Adarsh, Debalaya Sarker, Uday Deshpande, The Journal of Physical Chemistry C (2024), 128, 44, 18736–18749 Impact Factor: 3.3
69. Substrate and potential-driven surface morphology of bifunctional Ni-Fe electrode for efficient alkaline water electrolysis, Lokanath Mohapatra, Ajay Rathour, Akshay Kumar Sonwane, Aniket Samanta, Goutam Dalapati, Ajay Kumar Kushwaha, Journal of Electroanalytical Chemistry, 2024, 974,118702 Impact Factor: 4.1
68. Effect of the Seed Layer on the Growth and Charge Transfer Behavior of Zn2SnO4 Nanorods in Photoelectrochemical Water Splitting, Lokanath Mohapatra and Ajay K. Kushwaha, The Journal of Physical Chemistry Letters (2024), 15, 2279-2286 Impact Factor: 5.7
67. Effect of the Seed Layer on the Growth and Charge Transfer Behavior of Zn2SnO4 Nanorods in Photoelectrochemical Water Splitting, Lokanath Mohapatra and Ajay K. Kushwaha, The Journal of Physical Chemistry Letters 2024, 15, 2279-2286
2023
66. Single Crystalline a-Fe2O3 Nanosheets with Improved PEC Performance for Water Splitting, Parveen Garg, Lokanath Mohapatra, Ajay Kumar Poonia, Ajay K. Kushwaha, Kumaran Nair Valsala Devi Adarsh, Uday Deshpande, ACS omega 2023,8, 38607-38618
65. Optical and photoelectrical properties of low-concentration-Mn-doped CsPbBr3 nanocrystals, Aditya Bhardwaj and, Ajay K. Kushwaha, Nanomaterials and Energy 2023, 12,1-10
64. Annealing atmospheres induced structural and morphological transformation of zinc tin hydroxide nanostructures, L Mohapatra, Ajay K. Kushwaha, Ceramics International 2023,49,15154-15163
63. Scan rate dependent deposition of highly active Ni-Co alloy based thin film for hydrogen evolution reaction, Abhinav Maurya, S. Suman, A. Bhardwaj, L. Mohapatra and Ajay K. Kushwaha; Journal of Materials Engineering and Performance 2023,32, 10383-10390
62. Quantum Floquet spectra of surface and bulk state of topological insulator, Upendra Kumar, Vipin Kumar, Ajay K. Kushwaha, Sung Beom Cho, Physica E: Low-dimensional Systems and Nanostructures 2023, 145 (115496)
2022
61. Bandgap analysis of transition-metal dichalcogenide and oxide via machine learning approach, Upendra Kumar, Km Arti Mishra, Ajay K. Kushwaha Sung Beom Cho, ; Journal of Physics and Chemistry of Solids 2022, 171 (110973), 4.38
60. Enhancement in photocurrent conversion efficiency via recrystallization of zinc tin hydroxide nanostructures, L.Mohapatra, S. Suman, Aditya Bhardwaj, N. Mukurala, Ajay K. Kushwaha* ; Journal of Alloys and Compounds. 2022, 928, 167127, 6.37
59. Single step wet-chemical deposition of cesium doped β-Ga2O3 nanostructured films for memristor application, Siddhartha Suman, A. Bhardwaj, N. Mukurala, L. Mohapatra, Ajay K. Kushwaha Memories: Materials, Devices, Circuits and Systems
58. Substrate dependent electrodeposition of Ni-Co alloy for efficient hydrogen evolution reaction, Abhinav Maurya , S. Suman, A. Bhardwaj, L. Mohapatra and Ajay K. Kushwaha Electrocatalysis 2022, 1-10, 2.93
57. Synthesis, Ambient Storage Stability and Optoelectronics Properties of Mn doped CsPbBr3 perovskite crystals, Aditya Bhardwaj and Ajay K. Kushwaha ; Applied Physics A 2022, 128 (856), 2.98
56. Capping ligands controlled structural and optoelectronic properties of CsPbBr3 nanocrystals, Aditya Bhardwaj and Ajay K. Kushwaha Journal of Materials Science: Materials in Electronics 2022, 33 (7404–17416), 2.77
55. Densely packed Ga2O3 nanostructured film via pH-controlled crystal growth and memristive properties, Siddhartha Suman, Ajay K. Kushwaha Journal of Solid State Chemistry 313, 123293 (2022), 3.65
54. Effect of dispersion solutions on optical properties and stability of CsPbBr3 perovskite nanocrystals, Aditya Bhardwaj, Ajay K. Kushwaha ECS Journal of Solid State Science and Technology 11, 036002 (2022), 2.07
2021
53. Thickness dependent photodetection properties of solution-processed CuI films: Towards cost-effective flexible visible photodetectors, Mokurala Krishnaiah, Ajit Kumar, Ajay K. Kushwaha Junyoung Song, Sung Hun Jin, Materials Letters (2021) 305 130815, 3.54
52. Surface controlled synthesis of Cu2FeSnS4 particles for enhanced hydrogen evolution reaction, Nagaraju Mukurala, Krishnaiah Mokurala, Lokanath Mohapatra, Siddhartha Suman, Ajay K. Kushwaha, International Journal of Hydrogen Energy (2021) 46 34689, 5.186
51. Solution-Processed CuI Films towards Flexible Visible-Photodetectors: Role of Annealing Temperature on Cu/I Ratio and Photodetective Properties, Mokurala Krishnaiah, AjitKumar, Dhananjay Mishra, Ajay K. Kushwaha, Sung Hun Jin, Jong Tae Park, Journal of Alloys and Compounds (2021) 887 161326, 6.37
50. Water and oxygen environment induced surface cracks healing in solution processed gallium oxide thin films, Siddhartha Suman, Aditya Bhardwaj, N. Mukurala, L.Mohapatra, Ajay K. Kushwaha, Materials Chemistry and Physics (2021) 271 124958, 4.77
49. Cu2FeSnS4 decorated Ni-TiO2 nanorods heterostructured photoanode for enhancing water splitting performance, M. Nagaraju, S, Suman, A, Bhardwaj, K, Mokurala, S. H. Jin, Ajay K. Kushwaha, Applied Surface Science (2021) 551 149377, 6.18
48. Annealing induced surface restructuring in hydrothermally synthesized gallium oxide nano-cuboids, S. Suman, N. Mukurala, Ajay K. Kushwaha Journal of Crystal Growth (2021) 554 125946, 1.83
47. Synthesis process dependent Physico-chemical and opto-electronic properties of Cu2FeSnS4 nanoparticle films, Nagaraju Mukurala, Krishnaiah Mokurala, Ajit Kumar, Ajay K. Kushwaha, Sung Hun Ceramic International (2021) 47 27898, 5.53
46. Synthesis of porous Cu2FeSnS4 particles via solvothermal process for removal of organic acid fuchsin dye pollutant from wastewater, Nagaraju Mukurala, Krishnaiah Mokurala, Siddhartha Suman, Ajay K. Kushwaha, Nano-Structures & Nano-Objects (2021) 26 100697, Cite Score 10
45. Recent Development in Analytical Model for Graphene Field Effect Transistors for RF Circuit Applications, Abhishek Kumar Upadhyay, Ajay K. Kushwaha, Deepika Gupta, Santosh K. Vishvakarma, arXiv.org (6 Jan 2021)
2020
44. Nanoengineered Advanced Materials for Enabling Hydrogen Economy: Functionalized Graphene–Incorporated Cupric Oxide Catalyst for Efficient Solar Hydrogen Production, G. K. Dalapati, S. M.‐Panah, R. S. Moakhar, S. Chakrabortty, S. Ghosh, Ajay K. Kushwaha, R. Katal, C. S. Chua, G. Xiao, S. Tripathy, S.Ramakrishna, Global Challenges 2020, 4 (3), 2070031, 5.13
2019
43. Sulphur precursor dependent crystallinity and optical properties of solution grown Cu2FeSnS4 particles , N. Mukurala, R.K. Mishra, S.H. Jin, and Ajay K. Kushwaha Materials Research Express 6 (8), 085099, 2019, 2.02
42. Vertical-slate-like MoS2 nanostructures on 3D-Ni-foam for binder-free, low-cost, and scalable solid-state symmetric supercapacitors, R.K. Mishra, Ajay K. Kushwaha, S. Kim, S.G. Seo and S.H. Jin, Current Applied Physics 19, 1-7 (2019), 2.85
41. Binder-Free, Scalable Hierarchical MoS2 as Electrode Materials in Symmetric Supercapacitors for Energy Harvesting Applications, R. K. Mishra, M. Krishnaih, S. Y. Kim, Ajay K. Kushwaha, and S. H. Jin, Materials Letters 1(236),167-170, (2019), 3.54
2018
40. Explicit Model of Channel Charge, Backscattering, and Mobility for Graphene FET in Quasi-Ballistic Regime, A.K. Upadhyay, Ajay K. Kushwaha, P. Rastogi, Y.S. Chauhan and S.K. Vishvakarma IEEE Transactions on Electron Devices 65, 5468 (2018), 3.22
39. AuPd bimetallic nanoparticle decorated TiO2 rutile nanorod arrays for enhanced photoelectrochemical water splitting, R. Moakhar, M. Jalali, Ajay K. Kushwaha, G. K. L. Goh, N. R. Noori, A. Dolati and M. Ghorbani Journal of Applied Electrochemistry 48, 995 (2018), 2.92
38. Transparent heat regulating (THR) materials and coatings for energy saving window applications: Impact of materials design, micro-structural, and interface quality on the THR performance, G. K. Dalapati, Ajay K. Kushwaha, M Sharma, V Suresh, S Shannigrahi, S Zhuk and S Masudy-Panah Progress in Materials Science 95, 42, (2018), 48.16
37. A Unified Scalable Quasi-Ballistic Transport Model of GFET for Circuit Simulations, A. Upadhyaya, Ajay K. Kushwaha and S.K. Vishvakarma IEEE Transactions on Electron Devices 65, 739 (2018), 3.22
36. Influence of electrodeposition modes on the electrochemical performance of MnO 2 films prepared using anionic MnO4 – (Mn 7+) precursor, RK Mishra, CS Prajapati, RR Shahi, Ajay K. Kushwaha, P P Sahay Ceramics International 5(44),5710-5718 (2018), 5.53
2017
35. Critical review on sputter-deposited Cu2ZnSnS4 (CZTS) based thin film photovoltaic technology focusing on device architecture and absorber quality on the solar cells performance, S. Zhuk, Ajay K. Kushwaha, T. K.S.Wong, S. Masudy-Panah, A.Smirnov and G. K. Dalapati Solar Energy Materials and Solar Cells 171, 239 (2017) , 7.30
34. Impact of molybdenum out diffusion and interface quality on the performance of sputter grown CZTS based solar cells, G.K. Dalapati, S. Zhuk, S. Masudy-Panah, Ajay K. Kushwaha, H. Leng et al. Scientific Reports 7, 1350 (2017), 4.99
33. Electrochemical supercapacitive performance of potentiostatically cathodic electrodeposited nanostructured MnO2 films, P.P. Sahay and Ajay K. Kushwaha, J Solid State Electrochemistry 21,2393–2405 (2017), 2.74
32. Stable and Efficient CuO Based Photocathode through Oxygen-Rich Composition and Au Pd Nanostructure Incorporation for Solar-Hydrogen Production, S. M.Panah, S. Roozbeh; S.C. Chua, Ajay K. Kushwaha, and G.K. Dalapati, ACS Applied Materials & Interfaces 9 (33), 27596 (2017), 10.38
31. Morphologically tailored CuO photocathode using aqueous solution technique for enhanced visible light driven water splitting, Ajay K. Kushwaha, G. K. Dalapati, R. S. Moakhar, and G. K. L. Goh, Journal of Photochemistry and Photobiology A: Chemistry 337, 54-61 (2017), 5.14
Before IIT Indore
30. A Facile pH Controlled Citrate-Based Reduction Method for Gold Nanoparticle Synthesis at Room Temperature, H.Tyagi*, Ajay K. Kushwaha*, A. Kumar and M. Aslam, *Equal contribution Nanoscale Res Lett 11, 362 (2016), 4.70
29. All earth abundant materials for low cost solar-driven hydrogen production, G.K. Dalapati, S.C. Chin, Ajay K. Kushwaha, SL Liew, V Suresh, D Chi Materials Letters 183, 183 (2016), 3.57
28. Rapid thermal annealing assisted stability and efficiency enhancement in a sputter deposited CuO photocathode, S. M. Panah, R.S. Moakhar, C.S. Chua, Ajay K. Kushwaha, and G.K. Dalapati, RSC Adv. 6, 29383 (2016), 4.03
27. Enhancement in solar driven water splitting by AuPd nanoparticle decoration of electrochemically grown ZnO nanorods, S. Roozbeh*, Ajay K. Kushwaha, M. Jalali, G.K.L Goh, M. Dolati and A. Ghorbani, Journal of Applied Electrochemistry 1-9 (2016), 292
26. Copper Oxide Nano-particles Film on Glass By Using Sputter And Chemical Bath Deposition Technique, A. Das, Ajay K. Kushwaha, G.K. Dalapati, N. R. Bansal, V. Suresh and S. Chattopadhyay Advanced Materials Letters 7, 600 (2016)
25. Au-Pd bimetallic nanoparticle electrodes for direct electroreduction of hexavalent chromium complexes, R.S. Moakhar, M. Bagheri, Ajay K. Kushwaha, A. Dolati, M. Ghorbani and G.K.L.Goh, Australian Journal of Chemistry 69, 423 (2016), 1.22
24. Temperature-dependent electrical characteristics of CBD/CBD grown n-ZnO nanowire/p-Si heterojunction diodes, A. Das, Ajay K. Kushwaha, S. Chakraborty, H.S. Dutta, A. Karmakar,D. Chi, and G. Dalapati, J. Phys. D: Appl. Phys. 49, 145105 (2016), 3.4
23. Enhanced dye loading-light harvesting TiO2 photoanode with screen printed nanorod-nanoparticles assembly for highly efficient solar cell, M. Jalali, R.S. Moakhar, Ajay K. Kushwaha, G.K..L Goh, N. Riahi-Noori, and S. K. Sadrnezhaad Electrochimica Acta 169, 395-401 (2015), 7.33
22. Cr-induced modifications in the structural, photoluminescence and acetone-sensing behaviour of hyrothermally synthesised SnO2 nanoparticles, R.K. Mishra, Ajay K. Kushwaha, P.P. Sahay, Journal of Experimental Nanoscience 10, 1042 (2015), 3.07
21. TiO2 surface nanostructuring for improved dye loading and light scattering in double layered screen printed dye sensitized solar cells, M. Jalali, R.S. Moakhar, Ajay K. Kushwaha, G.K.L. Goh, N.R. Noori and S. K. Sadrnezhaad, J. Applied Electrochemistry 45,831 (2015), 2.52
20. SnO2 quantum dots decorated on RGO: A superior sensitive, selective and reproducible performance for a H2 and LPG sensor, RK Mishra, SB Upadhyay, Ajay K. Kushwaha, TH Kim, G Murali, R Verma, M. Srivastava,J. Singh, P. P. Sahayb and S.H. Lee, Nanoscale 7, 11971 (2015), 8.30
19. ZnS shielded ZnO nanowire photoanodes for efficient water splitting, Ajay K. Kushwaha and M. Aslam, Electrochimica Acta 130, 222 (2014), 7.33
18. Influence of Cu doping on the structural, photoluminescence and formaldehyde sensing properties of SnO2 nanoparticles, R.K. Mishra, Ajay K. Kushwaha and P.P. Sahay, RSC Advances 4 (8), 3904 (2014), 4.03
17. Spray-deposited nanocrystalline WO3 thin films prepared using tungsten hexachloride dissolved in N-N dimethylformamide and influence of in doping on their structural, optical and electrical properties, M. Mukherjee, Ajay K. Kushwaha and P.P. Sahay Electronic Materials Letters 10, 401 (2014), 3.15
16. Improved structural and optical properties of Cu2ZnSnS4 thin films via optimized potential in single bath electrodeposition, B. Ananthoju, F.J. Sonia, Ajay K. Kushwaha, D. Bahadur, N.V. Medhekar and M. Aslam Electrochimica Acta 137, 154 (2014), 7.33
15. Defect controlled water splitting characteristics of gold nanoparticle functionalized ZnO nanowire films, Ajay K. Kushwaha and M Aslam RSC Advances 4 (40), 20955 (2014), 4.03
14. Tuning the Observability of Surface Plasmon in Silica–Gold Raspberry Shaped Nanoparticles Using Cuprous Oxide Shell, H. Tyagi, J. Mohapatra, Ajay K. Kushwaha and M. Aslam ACS applied materials & interfaces 5 (23), 12268-12274 (2013), 10.38
13. Effect of Al dopants on the structural, optical and gas sensing properties of spray-deposited ZnO thin films, C.S. Prajapati, Ajay K. Kushwaha, P.P. Sahay Materials Chemistry and Physics 142 (1), 276 (2013), 4.77
12. Experimental investigation of spray-deposited Fe-doped ZnO nanoparticle thin films: structural, microstructural, and optical properties, C.S. Prajapati, Ajay K. Kushwaha, P.P. Sahay Journal of thermal spray technology 22 (7), 1230 (2013), 2.83
11. Hydrogen-incorporated ZnO nanowire films: stable and high electrical conductivity, Ajay K. Kushwaha and M. Aslam J. Phys. D: Appl. Phys. 46, 485104 (2013), 3.50
10. Role of defect states in magnetic and electrical properties of ZnO nanowires, Ajay K. Kushwaha, H Tyagi and M Aslam, AIP Advances 3 (4), 042110 (2013), 1.69
9. Influence of Fe doping on the structural, optical and acetone sensing properties of sprayed ZnO thin films, C.S. Prajapatia, Ajay K. Kushwaha and P. P. Sahay Materials Research Bulletin 48, 2687 (2013), 5.60
8. Optoelectronics and formaldehyde sensing properties of tin-doped ZnO thin films, C.S. Prajapati, Ajay K. Kushwaha and P.P. Sahay Applied Physics A 339, 7589 (2013) , 2.98
7. Defect induced high photocurrent in solution grown vertically aligned ZnO nanowire array films, Ajay K. Kushwaha and M Aslam Journal of Applied Physics 112, 054316 (2012) , 2.8
6. Controlled growth of highly oriented ZnO nanorod array on amorphous glass substrate and their optical and electrical properties, Ajay K. Kushwaha and M Aslam, International Journal of Nanoscience 10, 635 (2011), Cite Score: 1.5
5. pH-dependent synthesis of stabilized gold nanoparticles using ascorbic acid, H. Tyagi, Ajay K. Kushwaha, A. Kumar and M. Aslam International Journal of Nanoscience 10, 857 (2011), Cite Score: 1.5
4. Performance Enhancement of p-type Organic Thin Film Transistors Using Zinc Oxide Nanostructures, Kumar, R.R. Navan, Ajay K. Kushwaha, M. Aslam and V. Ramgopal Rao, International Journal of Nanoscience 10, 761 (2011) , Cite Score: 1.5
3. Electrochemical unzipping of multi-walled carbon nanotubes for facile synthesis of high-quality graphene nanoribbons, D.B. Shinde, J. Debgupta, Ajay K. Kushwaha, M. Aslam and V.K. Pillai Journal of the American Chemical Society 133, 4168 (2011), 16.38
2. A novel catalyst-free synthesis of vertically aligned silicon nanowire–carbon nanotube heterojunction arrays high performance electron field emitters, V.S. Kale, B.R. Sathe, Ajay K. Kushwaha, M. Aslam and M.V. Shelke, Chemical Communications , 47, 7785 (2011)
1. Synthesis of Rh–carbon nanotube based heterostructures and their enhanced field emission characteristics, B. R. Sathe, B.A. Kakade, Ajay K. Kushwaha, M. Aslam and V. K. Pillai, Chemical Communications 46, 5671, 6.06, (2010)