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71. Performance-Stability Correlation in of MAPbI3 Based Perovskite Solar Cells Developed using Ink Derived from Single Crystals. Battula Ramya Krishna, C. Sudakar, P. Bhyrappa,  Ganapathy Veerappan, Easwaramoorthi Ramasamy, Opt. Mater. 2024, 153, 115538.
70. Influence of acid catalyst on the synthesis of trans-porphyrins and crystal structure of a 5-(pyren-1-yl)dipyrromethane, S.Sundharamurthi, P.Bhyrappa, Chemistry Select, 2023, (https://doi.org/10.1002/slct.202301639)
69. MAPbI3 single crystal derived precursor ink for stable and efficient perovskite solar cells, K. B. Ramya, C. Sudakar, P. Bhyrappa, G. Veerappan, E. Ramasamy,                     J. Alloys Compds. 2023, 944, 169082 (https://doi.org/10.1016/j.jallcom.2023.169082).    

       68.  Growth of single-crystalline MAPbI3 perovskite film by a modified space-confined inverse temperature crystallization method. K. B. Ramya, C. Sudakar,                        P. Bhyrappa, G. Veerappan,  E. Ramasamy, Surf. Interfaces, 2022, 102475. (https://doi.org/10.1016/j.surfin.2022.102475)

      67. Single-Crystal Hybrid Lead Halide Perovskites: Growth, Properties, and Device Integration for Solar Cell Application, K. B. Ramya, C. Sudakar,  P. Bhyrappa,                   G. Veerappan,  E. Ramasamy, Cryst. Growth Des., 2022, 22, 6338-6362 (https://doi.org/10.1021/acs.cgd.2c00789).

       66. Dual functional inorganic CuSCN for efficient hole extraction and moisture sealing of MAPbI3 perovskite solar cells, Ramya Krishna Battula, Ganapathy                                  Veerappan, P. Bhyrappa, Chandran Sudakar and Easwaramoorthi Ramasamy, Mater. Adv., 2022, 3, 2000–2010 (Cover page article).        

        65. Effect of solvent on the electronic absorption spectral properties of mixed beta-octasubstituted free base tetraphenylporphyrins, P. Bhyrappa and U. K. Sarangi, J. Porph.
                Phthalocyanines 2021, 25, 500-510 (Dedicated to Prof. T. K. Chandrashekar on the occasion of his 65th birthday).
  1. Stability of MAPbI3 perovskite grown on planar mesoporous electron-selective  contact by inverse temperature crystallisation, Ramya Krishna B, G. Veerappan, P. Bhyrappa C. Sudakar and Easwaramoorthi R. RSC Adv. 2020, 10, 30767.
  2. Effect of solvent on the electronic absorption spectral properties of Ni(II) and Cu(II)-complexes of some mixed β-octasubstituted-meso–tetraphenylporphyrins, M. Sankar and P. Bhyrappa, Chem. Phys. Lett. 2019, 730, 643-652.
  3. Effect of solvent on the electronic absorption spectral properties of some mixed β-octasubstituted Zn(II)-tetraphenylporphyrins; Bhyrappa P and M. Sankar, Spectrochim. Acta, 2018, 189, 80-85.
  4. Highly nonplanar macrocyclic ring conformation in the crystal structures of Ni(II) and Cu(II)-octaphenylporphyrins; P. Bhyrappa, M. Sankar, K. Karunanithi and B. Varghese, J. Struct. Chem. 2018, 59, 428-437.
  5. Recent advances in mixed -pyrrole substituted meso-tetraphenylporphyrins; Bhyrappa P., Tetrahedron Lett. 2016, 47, 5150-5167 (Invited review article).
  6. Sensitization of La modified NaTaO3 with cobalt tetra phenyl porphyrin for photo catalytic reduction of CO2 by water with UV light; V. Jeyalakshmi, S. Tamilmani, R. Mahalakshmy, P. Bhyrappa, K. R. Krishnamurthy, B. Viswanathan, J. Mol. Catal. A, 2016, 420, 200-207.
  7. Crystal structures of unsymmetrically mixed β-pyrrole substituted Ni(II) meso-tetraphenylporphyrins; Bhyrappa, P.; Velkannan, V., Ujwal K. Sarangi, J. Chem. Sci. 2016, 128, 1047.
  8. Crystal structures of meso-tetrakis(2′,6’/3′,5′-difluorophenyl)porphyrins and their metal complexes: Influence of position of the fluoro groups on their structural properties; P. Bhyrappa and K. Karunanithi, J. Chem. Sci. 2016, 128, 501-509.
  9. Synthesis of antipodal β-trisubstituted meso-tetraphenylporphyrins and the crystal structure of hexaphenylporphinatozinc(II) bispyridinate complex; P. Bhyrappa and V. Velkannan, J. Chem. Sci. 2015, 127, 663-669.
  10. Structural elucidation of a few electron-deficient porphyrin/fullerene cocrystallates: Influence of fullerene on the porphyrin ring conformation; K. Karunanithi and P. Bhyrappa, Inorg. Chim. Acta, 2015, 427, 41-51.
  11. Mixed β-pyrrole substituted meso-tetraphenylporphyrins and their metal complexes: Synthesis, structures and electrochemical redox properties; P. Bhyrappa, U. K. Sarangi, and B. Varghese, Inorg. Chim. Acta 2015, 426, 171.
  12. Unsymmetrically mixed β-octasubstituted meso-tetraphenylporphyrins: Structural and electrochemical redox properties; V. Velkannan and P. Bhyrappa, Polyhedron 2015, 87, 170-181.
  13. β-Tetrasubstituted meso-tetra(4′-n-butylphenyl)porphyrins and their metal complexes: Synthesis and structural properties; P. Bhyrappa, U. K. Sarangi, V. Velkannan and V. Ramkumar, Eur. J. Inorg. Chem. 2014, 5760-5769.
  14. Switching nonplanarity of the macrocycle to planar conformation in the cobalt(II) and copper(II) β-tetra(2′-thienyl)-meso-tetraphenylporphyrin/C60 cocrystallates; P. Bhyrappa, U. K. Sarangi and B. Varghese, Eur. J. Inorg. Chem. (Commun.) 2014, 5646-5652.
  15. Planar and nonplanar free base tetraarylporphyrins: -pyrrole substituents and geometric effects on electrochemistry, spectroelectrochemistry, and protonation/deprotonation reactions in nonaqueous media; Y. Fang, P. Bhyrappa, Z. Ou and K. M. Kadish, Chem.-Eur. J. 2014, 2, 524-532.
  16. Mixed -pyrrole substituted meso-tetraphenylporphyrins and their metal complexes: Optical nonlinearity using degenerate four wave mixing technique; B. S. Kalnoor, P. B. Bisht, K. C. Jena, V. Velkannan, and P. Bhyrappa, J. Phys. Chem. A 2013, 117, 8216-8222.
  17. β-Tetrakis(2-thienyl)-meso-tetraphenylporphyrins: Synthesis, structure and electrochemical redox properties; P. Bhyrappa and V. Velkannan, Inorg. Chim. Acta 2012, 387, 64-73.
  18. β-Tetrabromo-meso-tetra(4′-substituted phenyl)porphyrins: Synthesis and electrochemical redox properties; P. Bhyrappa and V. Velkannan, J. Porphyrins Phthalocyanines 2011, 15, 883-889 (Invited article).
  19. Synthesis and crystal structures of five-coordinated -tetra(phenyl/cyano) substituted Zn(II)-tetraphenylporphyrins; P. Bhyrappa and K. Karunanithi, Inorg. Chim. Acta 2011, 372, 417-424 (Invited article)
  20. Porphyrin-Fullerene, C60 cocrystallates: Influence of C60 on the porphyrin ring conformation; P. Bhyrappa and K. Karunanithi, Inorg. Chem., 2010, 50, 8389-8400.
  21. Regioselective syntheses of 2,3-disubstituted-12-formyl-5,10,15,20-tetraphenylporphyrins and their metal complexes; P. Bhyrappa, V. Velkannan and Ayan Maity. J. Porphyrins Phthalocyanines 2010, 14, 459-467.
  22. Structural and electrochemical properties of -tetrabromo-meso-tetrakis(4- alkyloxyphenyl)porphyrins and their metal complexes; P. Bhyrappa and C. Arunkumar, J. Chem. Sci. 2010, 122, 233-238.
  23. Synthesis of beta-di and tribromoporphyrins and crystal structures of trisubstituted Zn(II)-porphyrins; P. Bhyrappa and V. Velkannan. Tetrahedron Lett., 2010, 51, 40-42.
  24. Functionalized Au22 clusters: Synthesis, charcaterisation and patterning; E. S. Shibu, B. Radha, P. K. Verma, P. Bhyrappa, G. U. Kulkarni, S. K. Pal and T. Pradeep ACS Appl. Mater. Interfaces 2009, 1, 2199-2210.
  25. Influence of mixed substitution on the macrocyclic ring conformations of free base porphyrins and their metal complexes; P. Bhyrappa, C. Arunkumar and B. Varghese, Inorg. Chem. 2009, 49, 3954-3965.
  26. Regioselective synthesis of antipodal -tetrabrominated meso-tetraarylporphyrins; P. Bhyrappa, V. Velkannan, K. Karunanithi, B. Varghese and Harikrishna, Bull. Chem. Soc. Jpn. 2008, 81, 995-1001.
  27. 2,3,12,13-Tetrabromo-5,10,15,20-tetrakis(4-butoxyphenyl)porphyrin 1,2-dichloroethane solvate; P. Bhyrappa, C. Arunkumar and B. Varghese, Acta Cryst. 2008, C64, o276-o278.
  28. Synthesis and mesogenic properties of -tetrabrominated tetraalkyloxyporphyrins; P. Bhyrappa, C. Arunkumar, B. Varghese, D. S. Sankara Rao, S. K. Prasad, J. Porphyrins Phthalocyanines 2008, 12, 54-61.
  29. C60 Tetrachloroethylene tetrasolvate; C. Arunkumar, P. Bhyrappa and B. Varghese. Acta Cryst. 2008, E64, o278-o280.
  30. 5,10,15,20-tetrakis(3´,5´-difluorophenyl)porphyrin; P. Bhyrappa, V. Velkannan and B. Varghese. Acta Cryst., 2008, E64, o190-o192.
  31. 2,3,12,13-Tetraphenyl-5,10,15,20-tetraphenylporphinato copper(II) 1,1,2,2-tetrachloroethane solvate; P. Bhyrappa, K. Karunanithi and B. Varghese, Acta Cryst., 2007, E64, m330.
  32. Influence of steric hindrance on the solvent dependent absorption spectral behavior of highly brominated free base porphyrin and its Zn(II) complex; P. Bhyrappa, C. Arunkumar and B. Varghese, J. Porphyrins Phthalocyanines 2007, 11, 795-802.
  33. 5,10,15,20-Tetrakis(4´-methoxyphenyl)porphinato zinc(II) tetrachloroethane solvate; P. Bhyrappa, K. Karunanithi and B. Varghese. Acta Cryst. 2007, E63, m3201.
  34. 2,3,12,13-Tetramethyl-5,10,15,20-tetraphenylporphyrin; P. Bhyrappa, K. Karunanithi, B. Varghese. Acta Cryst. 2007, E63, o4755.
  35. Supramolecular chirogenesis in bis-porphyrins: Interaction with Chiral Acids and Application for the Absolute Configuration Assignment; P. Bhyrappa, V. V. Borovkov, and Y. Inoue. Org. Lett., 2007, 9, 433-435.
  36. Synthesis and axial ligation behaviour of sterically hindered Zn(II)-porphyrin liquid crystals; C. Arunkumar, P. Bhyrappa and B. Varghese. Tetrahedron Lett. 2006, 47, 8033-8037.
  37. Meso-Tetrathienylporphyrins: Steady state emission and structural properties;P. Bhyrappa, M. Sankar, B. Varghese and P. Bhavana.J. Chem. Sci. 2006, 118, 393-397.
  38. Mixed substituted porphyrins: Structural and electrochemical redox properties; P. Bhyrappa, M. Sankar and B. Varghese. Inorg. Chem. 2006, 45, 4136-4149.
  39. Microporous Porphyrin Solids; Suslick, K. S.; Bhyrappa, P.; Chou, J.-H.; Kosal, M. E.; Nakagaki, S.; Smithenry, D. W.; Wilson, S. R. Acc. Chem. Res. 2005, 38, 283-291 (Most cited article in 2005).
  40. Synthesis and crystal structure of 5-(4-carboxyphenyl)-10,15,20-tri(4’-t-butylphenyl)porphinato zinc(II) complex; P. Bhyrappa, C Arunkumar and J.J. Vittal, J. Chem. Sci., 2005, 117, 139-143 (Invited article).
  41. Meso-tetrakis(3′,5′-di-substituted-phenyl)porphyrins: structural, electrochemical redox and axial ligation properties; M. Sankar, P. Bhyrappa, B.Varghese, K. K. Praneeth and G. Vaijayanthimala, J. Porphyrins Phthalocyanines 2005, 9, 413-422.
  42. Unusual solvent dependent electronic absorption spectral properties of nickel(II) and copper(II) perhaloporphyrins; M. Sankar, C. Arunkumar and P. Bhyrappa J. Porphhyrins Phthalocyanines 2004, 8, 1343-1354.
  43. Covalently linked bisporphyrins bearing tetraphenylporphyin and perbromoporphyrin units: Synthesis and their properties; P. Bhyrappa and V. Krishnan J. Chem. Sci. 2004, 116, 71-78.
  44. Highly brominated porphyrins: Synthesis, structure and their properties; P. Bhyrappa, P. Bhavana and J. J. Vittal, J. Porphyrins Phthalocyanines 2003, 7, 682-692.
  45. An improved protocol for the synthesis of antipodal tetrabromotetraphenylporphyrin and the crystal structure of its Zinc(II) complex; P. K. Kumar, P. Bhyrappa and B. Varghese, Tetrahedron Lett. 2003, 44, 4849-4851.
  46. Facile synthesis and supramolecular network of a Zn(II)-octaesterporphyrin; P. Bhyrappa, G. Vaijayanthimala and B. Verghese, Tetrahedron Lett. 2002, 43, 6427-6429.
  47. Lewis-base binding properties of -octahalotetraphenylporphyrins; P. Bhyrappa and P. Bhavana, Chem. Phys. Lett. 2002, 357, 108-112.
  48. Meso-Tetrathienylporphyrins: electrochemical and axial ligation properties; P. Bhyrappa and P. Bhavana, Chem. Phys. Lett. 2001, 349, 399-404.
  49. Unusual solvent dependent optical absorption properties of free base perhaloporphyrins; P. Bhyrappa and P. Bhavana, Chem. Phys. Lett. 2001, 342, 39-44.
  50. 5,10,15,20-Tetrakis(2-thienyl)porphyrinato zinc(II); P. Bhavana, B. Verghese, P. Bhyrappa, Acta Cryst. C, 2001, 57, 252.
  51. Perbrominated 2-nitrotetraphenylporphyrins: electrochemical and axial ligation properties; P. Bhyrappa, P. Bhavana, J. Chem. Soc. Perkin Trans. 2, 2001, 238.
  52. Shape-selective ligation to dendrimer metalloporphyrins; P. Bhyrappa, G. Vaijayanthimala, K. S. Suslick, J. Am. Chem. Soc. 1999, 121, 262-264.
  53. Synthesis and crystal structure of 5,10,15,20-tetrakis(3′,5′-dinitrophenyl)porphyrin; , P. Bhyrappa, K. S. Suslick, J. Porphyrins Phthalocyanines 1998, 2, 391-395.
  54. Supramolecular networks of octahydroxyporphyrins; P. Bhyrappa, S. R. Wilson, K. S. Suslick, Supramol. Chem. 1998, 9, 169-174.
  55. Hydrogen-bonded porphyrinic solids: Supramolecular networks of octahydroxy porphyrins; P. Bhyrappa, S. R. Wilson, K. S. Suslick, J. Am. Chem. Soc. 1997, 119, 8492-8502.
  56. Shape-selective epoxidation of alkenes using metalloporphyrin dendrimers; P. Bhyrappa, J. K. Young, J. S. Moore, K. S. Suslick, J. Mol. Catl. A. 1996, A113, 109-116.
  57. Dendrimer metalloporphyrins: Synthesis and catalysis; P. Bhyrappa, J. K. Young, J. S. Moore, K. S. Suslick, J. Am. Chem. Soc. 1996, 118, 5708-5711.
  58. The C602– fulleride ion, P. W. D. Boyd; P. Bhyrappa, P. Paul, J. Stinchcombe, D. B. Bolskar, Y. Sun, C. A. Reed, J. Am. Chem. Soc. 1995, 117, 2907-2914.
  59. Structure of nonplanar octabromotetraphenylporphyrin and kinetics of rapid metallation reactions; P. Bhyrappa, V. Krishnan, M. Nethaji, Chem. Lett. 1993, 22, 869-872.
  60. Solvation and axial ligation properties of 2,3,7,8,12,13,17,18-octabromo-5,10,15,20-tetraphenylporphinato zinc(II); P. Bhyrappa, V. Krishnan, M. Nethaji, J. Chem. Soc. Dalton Trans. 1993, 1901-1906.
  61. Synthesis and electronic characterisation of descrete Buckminsterfulleride salts: C602– and C603; P. Bhyrappa, P. Paul, J. Stinchcombe, P. W. D. Boyd, C. A. Reed, J. Am. Chem. Soc. 1993, 115, 11004-11005.
  62. Buckminsterfulleride(-1) salts: Synthesis, EPR and the Jahn-Teller distortion of C60; J. Stinchcombe, A. Penicaud, P. Bhyrappa, P. W. D. Boyd, C. A. Reed, J. Am. Chem. Soc. 1993, 115, 5212-5217.
  63. Improved chromatographic separation and purification of C60 and C70 fullerenes; P. Bhyrappa, A. Penicaud, M. Kawamoto, C. A. Reed, J. Chem. Soc. Chem. Commun. 1992, 936-937.
  64. Octabromotetraphenylporphyrin and its metal derivatives: electronic structure and electrochemical Properties; P. Bhyrappa, V. Krishnan, Inorg. Chem. 1991, 30, 239-245

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