Publications

Publications


  1. Perovskite Nanocrystals as a Color Converter for Visible Light Communication
    Ibrahim Dursun, Chao Shen, Manas R Parida, Jun Pan, Smritakshi P. Sarmah, Davide Priante, Noktan Alyami, Jiakai Liu, Makhsud I. Saidaminov, Mohd S. Alias, Ahmed L. Abdelhady, Tien Khee Ng, Omar F. Mohammed, Boon S. Ooi, and Osman M. Bakr
    ACS Photonics, Just Accepted Manuscript, (2016)
  2. Real-space Mapping of Surface Trap States in CIGSe Nanocrystals using 4D Electron Microscopy
    Riya Bose, Ashok Bera, Manas R Parida, Aniruddha Adhikari, Basamat S. Shaheen, Erkki Alarousu, Jingya Sun, Tom Wu, Osman M. Bakr, Omar F. Mohammed
    Nano Lett., Just Accepted Manuscript, (2016)
  3. Formamidinium Lead Halide Perovskite Crystals with Unprecedented Long Carrier Dynamics and Diffusion Length​
    Ayan A. Zhumekenov, Makhsud I. Saidaminov, Md Azimul Haque, Erkki Alarousu, Smritakshi Phukan Sarmah, Banavoth Murali, Ibrahim Dursun, Xiao-He Miao, Ahmed L. Abdelhady, Tom Wu, Omar F. Mohammed, Osman M. Bakr
    ACS Energy Lett., 1, pp 32–37, (2016)
  4. 10-fold enhancement in light-driven water splitting using niobium oxynitride microcone array films
    Basamat S. Shaheen, Ahmed M. Hafez, Banavoth Murali, Ahmad R. Kirmani, Aram Amassian, Omar F. Mohammed, Nageh K. Allam
    Solar Energy Materials and Solar Cells, 151, 149-153, (2016)                                            
  5. Solution-Grown Monocrystalline Hybrid Perovskite Films for Hole-Transporter-Free Solar Cells
    Wei Peng, Lingfei Wang, Banavoth Murali, Kang-Ting Ho, Ashok Bera, Namchul Cho, Chen-Fang Kang, Victor M. Burlakov, Jun Pan, Lutfan Sinatra, Chun Ma, Wei Xu, Dong Shi, Erkki Alarousu, Alain Goriely, Jr-Hau He, Omar F. Mohammed, Tom Wu, Osman M. Bakr
    Advanced Materials, (2016)                                            
  6. Gold Doping of Silver Nanoclusters: A 26-Fold Enhancement in the Luminescence Quantum Yield
    Giada Soldan, Maha A. Aljuhani, Megalamane S. Bootharaju, Lina G. AbdulHalim, Manas R. Parida, Abdul-Hamid Emwas, Omar F. Mohammed, Osman M. Bakr
    Angewandte Chemie, (2016)                                            
  7. Remarkably high conversion efficiency of inverted bulk heterojunction solar cells: from ultrafast laser spectroscopy and electron microscopy to device fabrication and optimization
    Q. A. Alsulami, B. Murali, Y. Alsinan, M. R. Parida, S. M. Aly, and O. F. Mohammed
    Advanced Energy Materials, Article in Press, (2016)                                            
  8. Real-space Visualization of Energy Loss and Carrier diffusion in Nanowire Array using Four-Dimensional Electron Microscopy
    Riya Bose, Jingya Sun,  Jafar I. Khan, Basamat S. Shaheen, Aniruddha Adhikari, Tien Khee Ng, V. M. Burlakov, Manas R. Parida, Davide Priante, A. Goriely, Boon S. Ooi, Osman M. Bakr, and Omar F. Mohammed
    Advanced Materials, Article in Press, (2016)                                            
  9. Mapping Carrier Dynamics on Material Surfaces in Space and Time using Scanning Ultrafast Electron Microscopy
    Jingya Sun, Aniruddha Adhikari, Basamat S. Shaheen, Haoze Yang, and Omar F. Mohammed
    J. Phys. Chem. Lett., Just Accepted Manuscript (2016)                                            
  10. Robust and Air-Stable Sandwiched Organo-Lead Halide Perovskites for Photodetector Applications
    Banavoth Murali, Makhsud I. Saidaminov, Ahmed L. Abdelhady, Wei Peng, Jiakai Liu, Jun Pan, Osman M. Bakr, Omar F. Mohammed
    J. Mater. Chem. C, Accepted Manuscript (2016)                                            
  11. Enhanced Optoelectronic Performance of a Passivated Nanowire-based Device: Key Information from Real-space Imaging using 4D Electron Microscopy
    Jafar I. Khan, Aniruddha Adhikari, Jingya Sun, Davide Priante, Riya Bose, Basamat S. Shaheen, Tien Khee Ng, Chao Zhao, Osman M. Bakr, Boon S. Ooi, Omar F. Mohammed
    Small, Accepted Manuscript (2016)                      
  12. Ultrathin Cu2O as an efficient inorganic hole transporting material for perovskite solar cells
    Weili Yu, Feng Li, Hong Wang, Erkki Alarousu, Yin Chen, Bin Lin, Lingfei Wang, Mohamed Nejib Hedhili, Yangyang Li, Kewei Wu, Xianbin Wang, Omar F. Mohammed, and Tom Wu
    Nanoscale, Accepted Manuscript (2016)
  13. Triplet excited state properties in variable gap π-conjugated donor-acceptor-donor chromophores
    Seda Cekli, Russell W. Winkel, Erkki Alarousu, Omar F. Mohammed, and Kirk S Schanze
    Chem. Sci., Accepted Manuscript (2016)                                            
  14. Heterovalent dopant incorporation for bandgap and type engineering of perovskite crystals
    Ahmed L. Abdelhady, Makhsud I. Saidaminov, Banavoth Murali, Valerio Adinolfi, Oleksandr Voznyy, Khabiboulakh Katsiev, Erkki Alarousu, Riccardo Comin, Ibrahim Dursun, Lutfan Sinatra, Edward H. Sargent, Omar F. Mohammed, and Osman M. Bakr
    J. Phys. Chem. Lett., 7 (2), pp 295–301, (2016)                                            
  15. Templated atom-precise galvanic synthesis and structure elucidation of a [Ag24Au(SR)18]− nanocluster
    Megalamane S. Bootharaju, Chakra P. Joshi, Manas R. Parida, Omar F. Mohammed, Osman M. Bakr
    Angewandte Chemie Int. Ed., 55(3), pp 922–926, (2016)                                            
  16. The impact of electrostatic interactions on ultrafast charge transfer at Ag29 nanocluster - and CdTe quantum dot-fullerene interfaces
    Ghada H. Ahmed, Manas R. Parida, Alberto Tosato, Lina G. AbdulHalim, Anwar Usman, Qana A. Alsulami, Banavoth Murali, Erkki Alarousu, Osman M. Bakr, and Omar F. Mohammed
    J. Mater. Chem. C, Just Accepted Manuscript, (2016)                                            
  17. Ultrafast static and diffusion-controlled electron transfer at Ag29 nanocluster/molecular acceptor interfaces
    Omar F. Mohammed, Shawkat Aly, Lina G. AbdulHalim, Tabot Besong, Giada Soldan, and Osman M. Bakr
    Nanoscale, Advance Article, (2016)                                            
  18. Fast crystallization and improved stability of perovskite solar cells with Zn2SnO4 electron transporting layer: Interface matters
    Ashok Bera, Arif D. Sheikh, Md. Azimul Haque, Riya Bose, Erkki Alarousu, Omar F. Mohammed, and Tom Wu
    ACS Appl. Mater. Interfaces, 7 (51), pp 28404–28411, (2015)​                                            
  19. Air-stable surface-passivated perovskite quantum dots for ultra-robust, single- and two-photon-induced amplified spontaneous emission
    Jun Pan, Smritakshi P. Sarmah, Banavoth Murali, Ibrahim Dursun, Wei Peng, Manas R Parida, Jiakai Liu, Lutfan Sinatra, Noktan Alyami, Chao Zhao, Erkki Alarousu, Tien Khee Khee Ng, Boon S. Ooi, Osman M. Bakr, and Omar F. Mohammed
    J. Phys. Chem. Lett., 6(24), pp 5027-5033, (2015)                                            
  20. Dendritic tip-on polytriazine-based carbon nitride photocatalyst with high hydrogen evolution activity
    Manas K. Bhunia, Sigismund Melissen, Manas R Parida, Pradip Sarawade, Jean-Marie Basset, Dalaver H. Anjum, Omar F. Mohammed, Philippe Sautet, Tangui Le Bahers, and Kazuhiro Takanabe
    Chem. Mater., 27(24), pp 8237-8247, (2015)                                            
  21. Overcoming the cut-off charge transfer bandgaps at the Pbs quantum dot interface
    Ala’a O. El-Ballouli, Erkki Alarousu, Ahmad R. Kirmani, Aram Amassian, Osman M. Bakr, and Omar F. Mohammed
    Advanced Functional Materials, 25(48), pp 7435-7441, (2015)                                             
  22. Real-space imaging of carrier dynamics of materials surfaces by second-generation four-dimensional scanning ultrafast electron microscopy
    Jingya Sun, Vasily A. Melnikov, Jafar I. Khan, and Omar F. Mohammed
    J. Phys. Chem. Lett., 6(19), pp 3884–3890, (2015)​                                            
  23. Bimolecular excited-state electron transfer with surprisingly long-lived radical ions
    A. A. Alsam, S. M. Aly, A. Usman, M. R. Parida, S. del-Gobbo, E. Alarousu, and O. F. Mohammed
    J. Phys. Chem. C, 119(38), pp 21896-21903, (2015)​                                            
  24. CH3NH3PbCl3 single crystals: inverse temperature crystallization and visible-blind UV-photodetector
    G. Maculan, A. D. Sheikh, A. L. Abdelhady, M. I. Saidaminov, M. A. Haque, M. Banavoth, E. Alarousu, O. F. Mohammed, T. Wu, O. M. Bakr
    J. Phys. Chem. Lett., 6(19), pp 3781-3786, (2015)
  25. Nano surface engineering of Mn2O3 for potential light-harvesting application
    Prasenjit Kar, Samim Sardar, Srabanti Ghosh, Manas R. Parida, Bo Liu, Omar F. Mohammed, Peter Lemmens, Samir Kumar Pal 
    J. Mater. Chem. C, 3, pp 8200-8211, (2015)                                            
  26. The impact of grain alignment of the electron transporting layer on the performance of inverted bulk heterojunction solar cells
    Banavoth Murali, Abdulrahman El Labban, Jessica Eid, Erkki Alarousu, Dong Shi, Qiang Zhang, Xixiang Zhang, Osman M. Bakr, and Omar F. Mohammed
    Small, 11(39), pp 5272-5279, (2015)                                            
  27. Facile synthesis and high performance of a new carbazole-based hole-transporting material for hybrid perovskite solar cells
    H. Wang, A.D. Sheikh, Q. Feng, F. Li, Y. Chen, W. Yu, E. Alarousu, C. Ma, M.A. Haque, D. Shi, Z.-S. Wang, O.F. Mohammed, O.M. Bakr, and T. Wu
    ACS Photonics, 2 (7), pp 849–855, (2015)
  28. Ultrafast excited-state dynamics of diketopyrrolopyrrole (DPP)-based materials: static versus diffusion-controlled electron transfer process
    Q.A. Alsulami, S.M. Aly, S. Goswami, E. Alarousu, A. Usman, K.S. Schanze, and O.F. Mohammed
    J. Phys. Chem. C,119 (28), pp 15919–15925, (2015)
  29. High-quality bulk hybrid perovskite single crystals within minutes by inverse temperature crystallization
    M.I. Saidaminov, A.L. Abdelhady, B. Murali, E. Alarousu, V.M. Burlakov, W. Peng, I. Dursun, L. Wang, Y. He, G. Maculan, A. Goriely, T. Wu, O.F. Mohammed & O.M. Bakr
    Nature Communications 6, 7586, (2015)                                            
  30. To what extent can charge localization influence electron injection efficiency at graphene-porphyrin interfaces?
    Omar F. Mohammed, Manas Parida, Shawkat Aly, Erkki Alarousu, Aravindan Sridharan, D.H. Nagaraju and Husam N. Alshareef  
    Phys. Chem. Chem. Phys., 17, pp14513-14517, (2015)
  31. Ultrafast pump-probe reflectance spectroscopy: Why sodium makes Cu(In,Ga)Se2 solar cells better
    Jessica Eid, Anwar Usman, Issam Gereige, Jeroen Van Duren, Vadim Lyssenko, Karl Leo, Omar F. Mohammed
    Solar Energy Materials and Solar Cells, 140, pp 33–37, (2015)
  32. Quantum confinement-tunable intersystem crossing and triplet state lifetime of cationic porphyrin-CdTe quantum dot nano-assemblies
    Omar F. Mohammed, Ghada Ahmed, Shawkat Aly, Anwar Usman, Mohammed Eita and Vasily Melnikov
    Chem. Commun., 51, pp 8010-8013, (2015)​​                                            
  33. The recombination mechanisms leading to amplified spontaneous emission at the true-green wavelength in CH3NH3PbBr3 perovskites
    D. Priante, I. Dursun, M.S. Alias, D. Shi, V.A. Melnikov, T.K. Ng, O.F. Mohammed, O.M. Bakr and B.S. Ooi
    Appl. Phys. Lett. 106, 081902, (2015)                                            
  34. Nanoscale cross-point resistive switching memory comprising p-Type SnO bilayers
    K. Hota, Mohamed N. Hedhili, Qingxiao Wang, Vasily A. Melnikov, Omar F. Mohammed and Husam N. Alshareef
    Advanced Electronic Materials, Volume 1, Issue 3, (2015)                                            
  35. Real-time observation of ultrafast electron injection at graphene-Zn porphyrin interfaces
    Omar F. Mohammed, Dilshad Masih, Shawkat Aly, Anwar Usman and Erkki Alarousu 
    Phys. Chem. Chem. Phys., 17, 9015-9019, (2015)                                            
  36. Molecular-structure control of ultrafast electron injection at cationic porphyrin-CdTe quantum dot interfaces
    Shawkat M. Aly , Ghada H. Ahmed , Basamat S. Shaheen , Jingya Sun , and Omar F. Mohammed
    J. Phys. Chem. Lett., 6 (5), pp791–795, (2015)                                            
  37. Photoinduced triplet-state electron transfer of platinum porphyrin: A one-step direct method for sensing iodide to an unprecedented detection limit
    Dilshad Masih, Shawkat M. Aly, Erkki Alarousu, and Omar F. Mohammed
    J. Mater. Chem. A, 3, 6733-6738, (2015)                                            
  38. Low trap-state density and long carrier diffusion in organolead trihalide perovskite single crystals
    Dong Shi, Valerio Adinolfi, Riccardo Comin, Mingjian Yuan, Erkki Alarousu, Andrei Buin, Yin Chen, Sjoerd Hoogland, Alexander Rothenberger, Khabiboulakh Katsiev, Yaroslav Losovyj, Xin Zhang, Peter A. Dowben, Omar F. Mohammed, Edward H. Sargent, Osman M. Bakr
    Science, 347(6221) pp 519-522, (2015)                                            
  39. Tunable-photophysical processes of porphyrin macrocycles on the surface of ZnO nanoparticles
    Manas R. Parida, Shawkat M. Aly, Erkki Alarousu, and Omar F. Mohammed
    J. Phys. Chem. C, 119 (5), pp 2614–2621, (2015)
  40. Ambient layer-by-layer ZnO assembly for highly efficient polymer bulk heterojunction solar cells
    Mohamed Eita, Abdulrahman El Labban, Federico Cruciani, Anwar Usman, Pierre M. Beaujuge and Omar F. Mohammed
    Advanced Functional Materials, 25(10), pp 1558–1564, (2015)                                            
  41. Direct femtosecond observation of charge carrier recombination in ternary semiconductor nanocrystals: the effect of composition and shelling
    Riya Bose, Ghada H. Ahmed, Erkki Alarousu, Manas R Parida, Ahmed Lutfi Abdelhady, Osman M. Bakr, and Omar F. Mohammed.
    J. Phys. Chem. C, 119 (6), pp 3439–3446, (2015)                                            
  42. Carrier dynamics of a visible-light-responsive Ta3N5 photoanode for water oxidation
    Ahmed Ziani, Ela Nurlaela, Dattatray S. Dhawale, Diego Alves Silva, Erkki Alarousu, Omar F. Mohammed and Kazuhiro Takanabe
    Phys. Chem. Chem. Phys., 17, 2670-2677, (2015)                                            
  43. Solvent-dependent excited-state hydrogen transfer and intersystem crossing in 2-(2’-Hydroxyphenyl)-benzothiazole
    Shawkat M. Aly, Anwar Usman, Maytham AlZayer, Ghada A. Hamdi, Erkki Alarousu, and Omar F. Mohammed
    J. Phys. Chem. B, 119 (6), pp 2596–2603, (2015)
  44. A layer-by-layer ZnO nanoparticle-PbS quantum dot- self-assembly platform for ultrafast interfacial electron injection
    Mohamed Eita, Anwar Usman, Ala’a O. El-Ballouli, Erkki Alarousu, Osman M. Bakr, and Omar F. Mohammed
    Small, 11(1), pp 112-118, (2015)
  45. Photophysics of organometallic platinum(II) derivatives of the diketopyrrolopyrrole chromophore
    Subhadip Goswami, Russell W Winkel, Erkki Alarousu, Ion Ghiviriga, Omar F. Mohammed, and Kirk S. Schanze.
    J. Phys. Chem. A, 118 (50), pp 11735–11743, (2014)
  46. Perovskite oxide SrTiO3 as an efficient electron transporter for hybrid perovskite solar cells
    Ashok Bera, Kewei Wu, Arif Sheikh, Erkki Alarousu, Omar F. Mohammed, and Tom Wu
    J. Phys. Chem. C, 118 (49), pp 28494–28501, (2014)
  47. Photoinduced energy and electron transfer in rubrene-benzoquinone and rubrene-porphyrin systems
    Jafar I. Khan, Abdullah Saud Abbas, Shawkat M. Aly, Anwar Usman, Vasily Melnikov, Erkki Alarousu, and Omar F. Mohammed
    Chem. Phys. Lett. 616, pp 237-242, (2014)
  48. Ultrafast Photoinduced Electron Transfer in a pi-Conjugated Oligomer/Porphyrin Complex

    Shawkat M. Aly, Subhadip Goswami, Qana A. Alsulami, Kirk S. Schanze and Omar F. Mohammed

    The Journal of Physical Chemistry Letters. 5(19), 3386-3390, (2014).

  49. Impact of Metal Ions in Porphyrin-Based Applied Materials for Visible-Light Photocatalysis: Key Information from Ultrafast Electronic Spectroscopy.

    Prasenjit Kar, Samim Sardar, Erkki Alarousu, Jingya Sun, Zaki S. Seddigi, Saleh A. Ahmed, Ekram Y. Danish, Omar F. Mohammed, and Samir Kumar Pal

    Chemistry - A European Journal, 20(33), 10475-10483, (2014).

  50. Remarkable Fluorescence Enhancement versus Complex Formation of Cationic Porphyrins on the Surface of ZnO Nanoparticles
    S. M. Aly , M. S. Eita , J. I. Khan , E. Alarousu , O. F. Mohammed
    J. Phys. Chem. C, 118(23), 12154-12161, (2014)

  51. Ultrafast Electron Injection at the Cationic Porphyrin - Graphene Interface Assisted by Morlecular Flattening
    S. M. Aly, M. R. Parida, E. Alarousu, and O. F. Mohammed

    Chem. Commun., 50(72), 10452-10455, (2014)

  52. A Layer-by-Layer PbS Quantum Dot-ZnO Nanoparticle Self-Assembly Platform for Ultrafast Interfacial Electron Injection
    M. Eita, A. Usman,  A. O. El-Ballouli, E. Alarousu, O. M. Bakr and O. F. Mohammed
    Small, Article ASAP.
  53. Excited state intramolecular hydrogen transfer (ESIHT) of 1,8-dihydroxy-9,10-anthraquinone (DHAQ) characterized by ultrafast electronic and vibrational spectroscopy and computational modeling
    O. F. Mohammed, D. Xiao, V. S. Batista and E. T. J. Nibbering
    J. Phys. Chem. A, 118 (17), 3090–3099, (2014)

  54. Ultrafast Carrier Trapping of Metal-doped Titanium Dioxide Semiconductor Revealed with Femtosecond Transient Absorption Spectroopy
    J. Sun, Y. Yang, J. I. Khan, E. Alarousu, Z. Guo, X. Zhang, Q. Zhang and O. F. Mohammed
    ACS Applied Materials & Interfaces, 6(13), 10022-10027, (2014)
  55. Quantum Confinement-Tunable Ultrafast Charge Transfer at the PbS Quantum Dot and PCBM Fullerene Interface
    O. El-Ballouli, E. Alarousu, M. Bernardi, S. M. Aly, A. P. Lagrow, O. M. Bakr and O. F. Mohammed
    Journal of the American Chemical Society, 136 (19), 6952–6959, (2014)
  56. Real-time Observation of Ultrafast Intraband Relaxation and Exciton Multiplication in PbS Quantum Dots
    O. El-Ballouli, E. Alarousu, A. Usman, J. Pan O. M. Bakr and O. F. Mohammed
    ACS Photonics, 1 (3) 285-292, (2014)
  57. Generation of Multiple Excitons in Ag2S Quantum Dots: Single High-Energy versus Multiple-Photon Excitation
    J. Sun, W. Yu, A. Usman, T. T. Isimjan, S. DGobbo, E. Alarousu, K. Takanabe, and O. F. Mohammed
    Journal of Physical Chemistry Letters, 5 (4), 659–665, (2014)
  58. Environmental Scanning Ultrafast Electron Microscopy: Structural Dynamics of Solvation at Interfaces
    D-S. Yang, O. F. Mohammed and A.H. Zewail
    Angewandte Chemie International Edition, 52 (10) 2897-2901, (2013)
  59. The Role of Site-Specific Hydrogen Bonding Interactions in the Solvation Dynamics of N-Acetyltryptophanamide
    F. M. Fabrizio, A. M. El-Zohry, O. F. Mohammed and M. Chergui
    Journal of Physical Chemistry B, 116 (35), 10730-10738, (2012)
  60. Water-Wire Catalysis in Photoinduced Acid-Base Reactions
    O.-H. Kwon and O. F. Mohammed
    Physical Chemistry Chemical Physics, (invited Article), 14 (25), 8974- 8980, (2012)

  61. Ultrafast Branching of Reaction Pathways in 2-(2´-Hydroxyphenyl)benzothiazole in Polar Acetonitrile Solution
    O. F. Mohammed, S. Luber, V. S. Batista and E. T. J. Nibbering
    Journal of Physical Chemistry A, 115 (26), 7550-7558, (2011)
  62. Speed Limit of Protein Folding Evidenced in Secondary Structure Dynamics
    M. M. Lin, O. F. Mohammed, G. S. Jas, and A. H. Zewail
    Proceedings of the National Academy of Sciences of the United States of America, 108 (40), 16622-16627, (2011)
  63. 4D Scanning Ultrafast Electron Microscopy: Visualization of Materials Surface Dynamicss
    O. F. Mohammed, D-S. Yang, S. K. Pal, and A. H. Zewail
    PJournal of the American Chemical Society, 133 (20), 7708-7711, (2011)
  64. Ultrafast Intramolecular Charge Transfer of Formyl perylene Observed Using Femtosecond Transient Absorption Spectroscopy
    O. F. Mohammed
    Journal of Physical Chemistry A, 114 (43), 11576–11582, (2010)
  65. Scanning Ultrafast Electron Microscopy
    D-S. Yang, O. F. Mohammed and A.H. Zewail
    Proceedings of the National Academy of Sciences of the United States of America, 107 (34), 14993-14998, (2010)
  66. Ultrafast Excited-State Dynamics of Ferrocene-Bridge-Acceptor System
    O. F. Mohammed, and A. A.O. Sarhan
    Chemical Physics, 372 (1-3), 17-21, (2010)
  67. Ultrafast Excited-State Dynamics of Aminoperylene and of its Protonated Form Observed by Femtosecond Absorption Spectroscopy
    O. F. Mohammed, and E. Vauthey
    Chemical Physics Letters, 487 (4-6), 246-250, (2010)
  68. Heating and Cooling Dynamics of Carbon  Nanotubes Observed by Temperature-Jump Spectroscopy and Electron Microscopy
    O. F. Mohammed, P. C. Samartzis and A. H. Zewail
    Journal of the American Chemical Society, 131 (44), 16010–16011, (2009)
  69. Charge Transfer Assisted by Collective H- Bonding Dynamics
    O. F. Mohammed, O.-H. Kwon, C. M. Othon and A. H. Zewail
    Angewandte Chemie International Edition, 48 (34), 6251-6256, (2009)
  70.  
  71. Primary Peptide Folding Dynamics Observed with Ultrafast Temperature Jump
    O. F. Mohammed, G. S. Jas, M: M. Lin, and A. H. Zewail
    Angewandte Chemie International Edition, 48 (31), 5628-5632 (2009)
  72.  
  73. Photoinduced Ring-Opening of a Photochromic Dihydroindolizine Derivative Monitored with Femtosecond Visible and Infrared Spectroscopy
    O. F. Mohammed, S. A.  Ahmed,  E. Vauthey and E. T. J, Nibbering
    Journal of Physical Chemistry A, 113 (17), 5061-5065, (2009)
  74. Synthesis and Redox Behavior of New Ferrocene-pi Extended-Dithiafulvalenes: An Approach for Anticipated Organic Conductors
    O. Sarhan, O. F. Mohammed and T. Izumi
    Beilstein Journal of Organic Chemistry,5, AN6, (2009)
  75. Direct Femtosecond Observation of the Tight and Loose Ion Pairs upon Photoinduced Bimolecular Electron Transfer
    O. F. Mohammed, K. Adamczk, N. Banjeri, J. Dreyer, B. Lang,  E. T. J. Nibbering and  E.Vauthey
    Angewandte Chemie International Edition, 47 (47) 9044-9048, (2008)
  76. Simultaneous Generation of Different Types of Ion Pairs upon Charge Transfer Excitation of a Donor-Acceptor Complex Revealed by Ultrafast Transient Absorption Spectroscopy
    O. F. Mohammed, and  E. Vauthey
    Journal of Physical Chemistry A, 112 (26), 5804–5809, (2008)
  77. Excited-State Dynamics of Nitroperylene in Solution: Solvent and Excitation Wavelength Dependence
    O. F. Mohammed, and E. Vauthey
    Journal of Physical Chemistry A, 112 (17), 3823-3830, (2008)
  78. Base-Induced Solvent Switches in Acid-Base Reactions
    O. F. Mohammed, D. Pines, E. T. J. Nibbering and E. Pines
    Angewandte  Chemie  International Edition, 46 (69), 1458-1461, (2007)
  79. Aqueous Bimolecular Proton Transfer in Acid–Base Neutralization
    O. F. Mohammed, D. Pines, E. Pines and E. T. J. Nibbering
    Chemical Physics, 341 (1-3), 240-257 (2007)
  80. Photoinduced Bimolecular Electron Transfer Investigated by Femtosecond Time-Resolved Infrared Spectroscopy
    O. F. Mohammed, N. Banjeri, B. Lang,  E. T. J. Nibbering and E. Vauthey
    Journal of Physical Chemistry A, 110 (51), 13676-13680, (2006)
  81. Sequential Proton Transfer through Water Bridges in Acid-Base Reactions
    O. F. Mohammed, D. Pines, J. Dreyer, E. Pines and E. T. J. Nibbering
    Science, 310 (5745), 83-86, (2005)

  82.  
  83. Structural Evolution of the Chromophore in the Primary Stages of trans-cis Isomerization in Photoactive Yellow Protein
    K. Heyne, O. F. Mohammed, A. Usman, J. Dreyer, E. T. J. Nibbering and M. A. Cusanovich
    Journal of the American Chemical Society, 127 (51), 18100-18106, (2005)
  84.  
  85. Excited State Structure Determination of the Green Fluorescent Protein Chromophore
    Usman, O. F. Mohammed, E. T. J. Nibbering, J. Diang, K. Solntsev and L. M. Tolbert
    Journal of the American Chemical Society, 127 (32), 11214-11215, (2005)
  86. Solvent Dependent Photo-acidity State of Pyranine as Monitored with Transient Mid-Infrared Spectroscopy
    O. F. Mohammed, J. Dreyer, B.-Z. Magnes, E. Pines and E. T. J. Nibbering
    ChemPhysChem 6 (4), 625-636, (2005)
  87. Sequential Merocyanine Product Isomerization Following Femtosecond UV Excitation of a Spiropyran
    A.-K. Holm, O. F. Mohammed, M. Rini, E. Mukhtar, E. T. J. Nibbering and H. Fidder
    Journal of Physical Chemistry A, 109 (40), 8962-8968, (2005)
  88. Excited State Dynamics of a PYP Chromophore Model System Explored with Ultrafast Infrared Spectroscopy
    A. Usman, O. F. Mohammed, K. Heyne, J. Dreyer and E. T. J. Nibbering
    Chemical Physics Letters 401 (1-3), 157-163, (2005)
  89. Complexes of tris (o-Phenanthroline) Nickel(II) and Copper(II) Bromide with Dithiocarbamates Derived from -Amino Acids
    El-Said, A. S. A. Zidan, M. S. El-Meligy, A. A. M. Aly, and O. F. Mohammed
    Transition Metal Chemistry, 26 (1-2), 13-19, (2001)
  90. Coordination Properties of some Mixed Amino Acid Metal Complexes
    El-Said, A. S. A. Zidan, M. S. El- Meligy, A. A. M. Aly, and O. F. Mohammed
    Synthesis and Reactivity in Inorganic and Metal-Organic Chemistry, 31 (4), 633-648, (2001)
  91. Mixed Ligand Complexes of 5-Arylazo-8-Hydroxyquinoline and -Amino Acids with Co(II), Ni(II) and  Cu(II)
    S. A. Zidan, A. I. El-Said, M. S. El-Meligy, A. A. M. Aly, and O. F. Mohammed
    Journal of Thermal Analysis and Calorimetry, 62 (3), 665-679, (2000)
  92. Synthesis, Spectral and Thermal Studies on Cobalt(II), Copper(II), Nickel(II) and Zinc(II) Chelates with p-Tolylsalicylaldimine and  some Amino Acids
    El-Said, A. S. A. Zidan, M. S. El-Meligy, A. A. M. Aly, and O. F. Mohammed
    Synthesis and Reactivity in Inorganic and Metal-Organic Chemistry, 30 (7), 1373-1392,  (2000)