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Publications

2009-2000

80.  Cyclotriphosphazene ring as a platform for multiporphyrin assemblies.

      M. Rajeshwar Rao, G. Gayatri, A. Kumar, G. N. Sastry, M. Ravikanth Chem. Eur. J. 15, 3488-3496 (2009)

79. Metallated porphyrin self-assembled monolayers as Cu diffusion barriers for nano-scale CMOS technologies.

      M. A. Khaderbad, K. Nayak, M. Yedukondalu, M. Ravikanth, S. Mukherjee, V. R. Rao. Nanotechnology 2008, Nano 08. 8th

      IEEE conference 167-170 (2008).

78. Synthesis of covalently linked unsymmetrical porphyrin pentads containing three different porphyrin subunits

     Smita Rai and M. Ravikanth, J. Org. Chem. 73, 8364-8375 (2008).

77. Effect of meso-substituents and core-modification on photophysical and  electrochemical properties of porphyrin-ferrocene 

      conjugates. Smita Rai, G. Gayatri, G. Narahari Sastry, M. Ravikanth, Chem. Phys. Lett. 467, 179-185 (2008)

76. Explosive vapour sensor using poly-(3-hexylthiophene) and Cu(II)tetraphenyl  porphyrin composite based organic field effect

      transistor.  D. Ravishankar, S. Tiwari, H. N. Raval, M. Khaderabad, R. Singh, J. Sinha, M. Yedukondalu , M. Ravikanth, A. Kumar,

      R. Ramgopal Rao, Appl. Phys. Lett. 93, 263306-1 -263306-3 (2008).

75. Synthesis of unsymmetrical porphyrin triad containing three different porphyrin subunits  assembled by covalent and non-

      covalent interactions. S. Punidha, Smita Rai and M. Ravikanth,  J. Porphyrins Phthalocyanines. 12, 1030-1040 (2008).

74. Synthesis of covalently linked linear porphyrin triad and tetrad containing  different porphyrin sub-units

       S.Punidha and M. Ravikanth, Tetrahedron. 64, 8016-8028 (2008).

73.  Singlet-singlet energy transfer in homo- and hetero porphyrin dyads containing  meso-tolylporphyrin and meso-

       furylporphyrin sub-units. Smita Rai and M. Ravikanth, Chem. Phys. Lett. 453, 250-255 (2008).

72.  Synthesis and anion binding studies of thiaphlorins and covalently linked thiaphlorin-porphyrin dyads

       Iti Gupta, Roland Frohlich and M. Ravikanth, Eur. J. Org. Chem. 1884-1900 (2008).

71. Synthesis, aggregation and Photoinduced Electron Transfer processes of Cationic Water- Soluble 21-Thia and 21-

      Oxaporphyrins. Sangita Santra, T. K. Mukherjee, Navodit Babel, Iti Gupta, A. Datta and  M.Ravikanth, J. Photochem.

      Photobiol. A: Chem. 193, 166-177 (2008).

70.  First triazole bridged unsymmetrical porphyrin dyad via click chemistry.

       S. Punidha, S. Jasmine, A. Kumar and M. Ravikanth, J. Org. Chem. 73, 323-328 (2008).

69. Synthesis of meso-thienyl- and meso-furyl N2S3 sapphyrins and N2S4 rubyrins.

      Smita Rai and M. Ravikanth,  J. Porphyrins Phthalocyanines. 11, 784-794 (2007).

68. Tuning of redox and photophysical properties of porphyrins by successive introduction of one, two, three and four meso-

      furyl groups. G. Santosh and M. Ravikanth, Chem. Phys. Lett. 448, 248-252  (2007).

67.  Synthesis and spectral properties of N4, N3S and N2S2 porphyrins containing one,  two, three and four meso-furyl groups.

       G. Santosh and M. Ravikanth, Tetrahedron. 63, 7833-7844  (2007).

66. Synthesis and fluorescence properties of covalently linked homo and hetero porphyrin dyads containing meso-tolyl

      porphyrin and meso-furyl porphyrin sub-units. Smita Rai and M. Ravikanth, Tetrahedron.  63, 2455-2465 (2007).

65. Synthesis and photophysical properties of covalently linked porphyrin-21-thiaporphyrin dyads 

      Iti Gupta and M. Ravikanth, Inorg. Chim. Acta.  360, 1731-1742 (2007).

64.  Synthesis and photophysical studies of non-covalently linked unsymmetrical porphyrins dyads and triads

      S. Punidha, Sangita Santra and M. Ravikanth, J. Porphyrins Phthalocyanines. 11, 85-94 (2007).

63. meso-5-Bromo-10,15,20-tris(p-tolyl)-21-thiaporphyrin as a precursor for the synthesis  of novel compounds. 

     S. Punidha, Neeraj Agarwal, Iti Gupta and M. Ravikanth, Eur. J. Org. Chem. 1168-1175 (2007).

62. Synthesis of functionalized thia analogues of phlorins and covalently linked phlorin-porphyrin dyads.

      Iti Gupta, Roland Frohlich and M. Ravikanth, Chem. Commun. 3726-3728 (2006).

61. Recent developments in heteroporphyrins and their analogues.

      Iti Gupta and M. Ravikanth, Coord. Chem. Rev. 250, 468-518 (2006).

60.  Spectroscopic properties of meso-thienylporphyrins with different porphyrin cores.

      Iti Gupta and M. Ravikanth, J. Photochem. Photobiol. A. Chem. 177, 156-163(2006).

59.  Preparation, characterization and electrical properties of a novel self-assembled  meso-pyridyl porphyrin monolayer on gold

       surfaces. Sathyapalan, A. Lohani, S. Santra, S. Goyal, M. Ravikanth, S. Mukherji, V. R. Rao,  Aust. J. Chem.  58, 810-816 (2005).

 

58.  A meso-pyridyl porphyrin self-assembled monolayer on gold substrates for  molecular electronics applications.

       Satyapalan, A. Lohani, S. Santra, M. Ravikanth, S. Mukherji and V. Ramgopal  rao, Proc. 5th IEEE conf. On Nanotechnology,   

       vol. 1, 238-240 (2005).

57.  Synthesis of functionalized unsymmetrical thiophene diols and their use in the synthesis of cis-21-monothia- and cis-21,23-

       dithiaporphyrin building blocks with two different functional groups. S. Punidha and M. Ravikanth, Synlett.  2199-2203 (2005).

56.  Rhenium(I) bridged porphyrin dimers with heteroatom substituted cores: synthesis  and  fluorescence properties.

      G. Santosh and M. Ravikanth, Inorg. Chim. Acta. 358, 2671-2679 (2005).

55.  A simple route to prepare mono-functionalized 21-thia, 21,23-dithia and 21-thia-23-oxaporphyrins using unsymmetrical

       thiophene diols as key synthons and their use in the synthesis of of covalently linked unsymmetrical porphyrin dimers. 

       S. Punidha, N. Agarwal and M. Ravikanth, Eur. J. Org. Chem. 2500-2517 (2005).

54.  Fluorescence properties of meso-tetrafurylporphyrins.

       Iti Gupta and M. Ravikanth, J. Chem. Sci. 117, 161-166 (2005).

53.  One-flask synthesis of mono- and trifunctionalized 21-thia and 21-oxaporphyrin building blocks and their application in the

       synthesis of covalent and noncovalent unsymmetrical porphyrin arrays. Iti Gupta and M. Ravikanth, J. Org. Chem. 69, 6796-

       6811 (2004).

52.  Synthesis and crystal structures of 2,3,12,13-tetraalkoxy-21,23-dithiaporphyrins  and 2,3-dialkoxy-21-monothiaporphyrins. 

      N. Agarwal, C-H. Hung and M. Ravikanth, Tetrahedron.  60, 10671-10680 (2004).

51.  Core-modified porphyrin building blocks and covalent and non-covalent unsymmetrical porphyrin arrays.       

      M. Ravikanth, J. Porphyrins Phthalocyanines. 8, 468 (2004).

50.  Photophysical properties of boron-dipyrrin appended porphyrins with heteroatom cores.   

       D. Kumaresan, A. Datta and M. Ravikanth, Chem. Phys. Lett. 395, 87-91 (2004).

49. Synthesis of mono meso-pyridyl 21,23-dithiaporphyrins and unsymmetrical non- covalent dimers.

      Punidha and M. Ravikanth, Tetrahedron. 60, 8437-8444 (2004).

48. Synthesis of N3S, N3O, N2S2, N2O2, N2SO and N2OS porphyrins with one meso-unsubstituted carbon. 

      S. Punidha, Neeraj Agarwal, Ritwik Burai and M. Ravikanth, Eur. J. Org. Chem. 2223 (2004).

47. Synthesis and crystal structure of π-substituted thiaporphyrins with novel cyclic substituents. 

      Neeraj Agarwal, S. P. Mishra, C-H. Hung, Anil Kumar and M. Ravikanth, Bull. Chem. Soc. Japan  77, 1173-1180 (2004).

46. Synthesis of π-pyrrole and π-thiophene substituted 21,23-dithia and 21-monothiaporphyrins.

      Neeraj Agarwal and M. Ravikanth, Tetrahedron.  60, 4739-4747 (2004).

45. Novel and rapid synthetic routes to A3B and AB3-type 21-thiaporphyrins and their use in the construction of unsymmetrical 

      covalent and non-covalent porphyrin arrays. Iti Gupta, Neeraj Agarwal, M. Ravikanth, Eur. J. Org. Chem. 1693-1697 (2004).

44. Synthesis and formation of supramolecular spherical aggregates from poly(benzyl ether) dendrimers having 21-oxoporphyrin

      core. D. Kumaresan and M. Ravikanth, Chem.  Lett. 1120-1121 (2003).

43. Synthesis and structural characterization of meso-thienyl core-modified porphyrins.

      Iti Gupta, C.-H. Hung and M. Ravikanth, Eur. J. Org. Chem. 4392-4400 (2003).

42. Thiaporphyrins with one, two and four unsubstituted meso-carbons: Synthesis and functionalization.

      N. Agarwal, C.-H. Hung and M. Ravikanth, Eur. J. Org. Chem. 3730-3734 (2003).

41. Synthesis of π-thiophene substituted 21,23-dithiaporphyrins.

      N. Agarwal, S.P. Mishra, A. Kumar and M. Ravikanth, Chem. Lett. 32, 744-745 (2003).

40. Synthesis of meso-furyl porphyrins with N4, N3S, N2S2 and N3O porphyrin cores.

      Iti Gupta and M. Ravikanth, Tetrahedron 59, 6131-6139 (2003).

39. Cis-pyridyl core-modified porphyrins for the synthesis of cationic water-soluble porphyrins and unsymmetrical non-covalent

      porphyrin arrays.  Sangita Santra, D. Kumaresan, N. Agarwal and M. Ravikanth, Tetrahedron  58, 5347-5356 (2003).

38. Synthesis and crystal structure of 2,3,12,13-tetraalkoxy-21,23-dithiaporphyrins.

      N. Agarwal, S. P. Mishra, A. Kumar, C-H. Hung and M. Ravikanth, J. Chem. Soc. Chem. Commun. 2642-2643 (2002)

37. Synthesis of meso-furyl porphyrins.

      Iti Gupta and M. Ravikanth, Tetrahedron Lett. 43, 9453-9455 (2002).

36. Status and trends in molecular electronics.

      Rastogi, V. Ramgopal Rao, R. Jhaveri, S. Mukherji and M. Ravikanth, IETE Tech. Rev. 19, 307-315 (2002).

 

35. Supramolecular chemistry: porphyrin based assemblies.

      M. Ravikanth, Recent Trends in Chemistry, Eds. M. M. Srivastava, S. Srivastava, Discovery Publishing House, New Delhi,     

      Chapter 6, page no. 83-95 (2002).

34. Synthesis of single strapped 21-thia tetraphenylporphyrin systems.

      P. Boobalan, Iti Gupta and M. Ravikanth, Indian J. Chem. 41A, 1860-1863 (2002).

33. Synthesis of 21-thia and 21-oxaporphyrin building blocks and boron-dipyrrin appended systems.

      D. Kumaresan, N. Agarwal, I. Gupta and M. Ravikanth, Tetrahedron 58, 5347-5356 (2002).

32. Core modified porphyrin building blocks and unsymmetrical porphyrin arrays.

      M. Ravikanth, D. Kumaresan and N. Agarwal, Indian J. Chem. Sect. A 41A, 82-83 (2002)

31. Synthesis of 21-oxoporphyrin building blocks and energy donor appended systems.

      D. Kumaresan, Iti Gupta and M. Ravikanth, Tetrahedron Lett. 42, 8547-8550 (2001).

30. Synthesis of cationic water-soluble 21-oxaporphyrins.

      D. Kumaresan, S. Santra and M. Ravikanth, Synlett 1635-1637 (2001).

29. Synthesis of dithiaporphyrin based singlet – singlet energy transfer systems.

      D. Kumaresan, N. Agarawal and M. Ravikanth, J. Chem. Soc. Perkin Trans. I 1644-1648 (2001).

28. Synthesis and fluorescence properties of covalently linked diphenyl ethyne bridged porphyrin trimers.

      M. Ravikanth, Indian J. Chem. Sect. A 40A, 86-89 (2001).

27. Synthesis and photophysical study of unsymmetrical porphyrin arrays.

       M. Ravikanth, Proc. Indian Acad. Sci. (Chem. Sci.) 112, 361 (2000).

26. Synthesis of energy donors appended dithiaporphyrin systems.

      M. Ravikanth, N. Agarwal and D. Kumaresan, Chem. Lett. 836-837 (2000).

25. Synthesis of π-halogenated porphyrin dimers with distinct photophysical properties.

      M. Ravikanth, Indian J. Chem. Sect. A. 39A, 980-982 (2000).

24. Synthesis of π-substituted 21,23-dithiaporphyrins.

      M. Ravikanth, Chem. Lett. 480-481 (2000).

23. Synthesis and photophysical study of unsymmetrical porphyrin pentamers.

      M. Ravikanth, Tetrahedron Lett. 41, 3709-3712 (2000).

 

 

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