Omar F. Mohammed Abdelsaboor, PhD

Faculty

Associate Professor of Chemical and Material Sciences
Ultrafast Laser Spectroscopy and Imaging Laboratory

Current

Research Interest

● The development of time-resolved laser spectroscopy and four-dimentional ultrafast electron microscopy as unique tools for materials, chemical and physical sciences applications

● Photoinduced bimolecular electron transfer and the subsequent charge separation dynamics

● Nanoscale materials dynamics e.g., nanotubes, quantum dots and nanoparticles

● Synthesis and characterization of chemical systems that are ideal for ultrafast chemistry

● Ultrafast reaction dynamics of photoswitchable materials

● Electronic and vibarional spectroscopy

●Femtosecond and picosecond dynamics of the most elementary chemical and physical processes

Selected Publications


Modulation of Broadband Emissions in Two-dimensional <100>-oriented Ruddlesden-Popper Hybrid Perovskites

J. Yin, R. Naphade, L. Gutierrez Arzaluz, J-L. Bredas, O. M. Bakr, O. F. Mohammed

ACS Energy Letters, ASAP, (2020)

Access to Highly Efficient Energy Transfer in Metal–Organic Frameworks via Mixed Linkers Approach

J-t. Jia, L. Gutiérrez-Arzaluz, O. Shekhah, N. Alsadun, J. Czaban-Jozwiak, S. Zhou, O. M. Bakr, O. F. Mohammed

Journal of the American Chemical Society, 142, 8580–8584 (2020)

Tuning Hot Carrier Cooling Dynamics by Dielectric Confinement in Two-Dimensional Hybrid Perovskite Crystals

J. Yin, P. Maity,R. Naphade, V. Cheng, J-H. He, O. M. Bakr, J-L. Brédas, O. F. Mohammed

ACS Nano, 13, 12621-12629 (2019)

Extraordinary Carrier Diffusion on CdTe Surfaces Uncovered by 4D Electron Microscopy

A. M. El-Zohry, B. S. Shaheen, V. M. Burlakov, J. Yin, M. N. Hedhili, S. Shikin, B. S. Ooi, O. M. Bakr, O. F. Mohammed

Chem, 5, 706-718 (2019)

Layer-Dependent Rashba Band Splitting in 2D Hybrid Perovskites

J. Yin, P. Maity, L-J. Xu, A. M. El-Zohry, H. Li, O. M. Bakr, J-L Bredas, O. F. Mohammed

Chemistry of Materials, 30, 8538–8545 (2018). ACS Editor’s Choice. Chosen for the front cover of the journal.

Imaging Localized Energy States in Silicon-Doped InGaN Nanowires Using 4D Electron Microscopy

R. Bose, A. Adhikari, V. M. Burlakov, G. Liu, M. A. Haque, D. Priante, M. N. Hedhili, N. Wehbe, C. Zhao, H. Yang, T. K. Ng, A. Goriely, O. M. Bakr, T. Wu, B. S. Ooi, O. F. Mohammed

ACS Energy Letters, 3, 476–481 (2018)

Powering up perovskite photoresponse

O. M. Bakr and O. F. Mohammed

Science, 355, 1260-1261 (2017)

Engineering Interfacial Charge Transfer in CsPbBr3 Perovskite Nanocrystals by Heterovalent Doping

R. Begum, M. R. Parida, A. L. Abdelhady, B. Murali, N. Alyami, G. H. Ahmed, M. N. Hedhili, O. M. Bakr, and O. F. Mohammed

Journal of the American Chemical Society, 139, 731-737 (2017)

RealSpace Visualization of Energy Loss and Carrier Diffusion in a Semiconductor Nanowire Array Using 4D Electron Microscopy

R. Bose, J. Sun, J. I. Khan, B. S. Shaheen, A. Adhikari, T. K. Ng, V. M. Burlakov, M. R. Parida, D. Priante, A. Goriely, B. S. Ooi, O. M. Bakr, O. F. Mohammed

Advanced Materials, 28, 5106-5111(2016)

Real-Space Mapping of Surface Trap States in CIGSe Nanocrystals Using 4D Electron Microscopy

R. Bose, A. Bera, M. R. Parida, A. Adhikari, B. S. Shaheen, E. Alarousu, J. Sun, T. Wu, O. M. Bakr, and O. F. Mohammed

Nano Letters, 16, 4417–4423 (2016)

Ultrafast static and diffusion-controlled electron transfer at Ag29 nanocluster/molecular acceptor interfaces

S. Aly, L. G. AbdulHalim, T. Besong, G. Soldan, Osman M. Bakr, O. F. Mohammed

Nanoscale, Article 8, 5412-5416 (2016) Chosen for the front cover of Nanoscale.

Overcoming the Cut‐Off Charge Transfer Bandgaps at the PbS Quantum Dot Interface

A. O. El-Ballouli, E. Alarousu, A. R. Kirmani, A. Amassian, O. M. Bakr, O. F. Mohammed

Advanced Functional Materials, 25, 7435-7441 (2015). Chosen for the back cover of the journal.

Real-Space Imaging of Carrier Dynamics of Materials Surfaces by Second-Generation Four-Dimensional Scanning Ultrafast Electron Microscopy

J. Sun, V. A. Melnikov, J. I. Khan, O. F. Mohammed

Journal of Physical Chemistry Letters, 6, 3884-3890 (2015)

Air-stable surface-passivated perovskite quantum dots for ultra-robust, single- and two-photon-induced amplified spontaneous emission

J. Pan, S. P. Sarmah, B. Murali, I. Dursun, W. Peng, M. R. Parida, J. Liu, L. Sinatra, N. Alyami, C. Zhao, E. Alarousu, T. K. Khee Ng, B. S. Ooi, O. M. Bakr, O. F. Mohammed

Journal of Physical Chemistry Letters, 6, 5027-5033 (2015)

The Impact of Grain Alignment of the Electron Transporting Layer on the Performance of Inverted Bulk Heterojunction Solar Cells

M. Banavoth, A. El Labban, J. Eid, D. Shi, E. Alarousu, Q. Zhang, X. Zhang, O. M. Bakr, O. F. Mohammed

Small, 11, 5272–5279 (2015)

High-quality bulk hybrid perovskite single crystals within minutes by inverse temperature crystallization>

M. I. Saidaminov, A. L. Abdelhady, M. Banavoth, 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)

Quantum confinement-tunable intersystem crossing and triplet state lifetime of cationic porphyrin-CdTe quantum dot nano-assemblies
G. H. Ahmed, S.M. Aly, A. Usman, M. S. Eita, V. A. Melnikov, O. F. Mohammed

Chemical Communications, 51, 8010-8013 (2015). Chosen for the front cover of ChemComm.

Molecular-structure Control of Ultrafast Electron Injection at Cationic Porphyrin–CdTe Quantum Dot Interfaces

S. M. Aly, G. H. Ahmed, B. S. Shaheen, J. Sun, O. F. Mohammed

Journal of Physical Chemistry Letters, 6 (5), 791–795 (2015)

Ambient layer-by-layer ZnO assembly for highly efficient polymer bulk heterojunction solar cells

M. Eita, A. El Labban, F. Cruciani, A. Usman, P. M. Beaujuge, O. F. Mohammed

Advanced Functional Materials, 25, 1558–1564 (2015)

Photoinduced triplet-state electron transfer of platinum porphyrin: A one-step direct method for sensing iodide to an unprecedented detection limit

D. Masih, S. M. Aly, E. Alarousu, O. F. Mohammed

Journal of Materials Chemistry A, 3 (13), 6733-6738 (2015). Chosen for the front cover of Journal of Materials Chemistry A.

Education

  • Ph.D., Physical Chemistry, Humboldt University of Berlin, Germany, 2006                       
  • M.Sc., Chemistry, Assiut University, Egypt, 1999
  • B.Sc., Chemistry, Assiut University, Egypt, 1995

Professional Profile

  • 2019-present: Associate Professor, Chemical Sciences, KAUST, Saudi Arabia
  • 2012–2019: Assistant Professor, Chemical Sciences, KAUST, Saudi Arabia
  • 2008–2012: Senior Research Associate, California Institute of Technology, USA
  • 2007–2008: Postdoctoral Associate, RIKEN (Institute of Chemical and Physical Research), Japan
  • 2006–2007: Postdoctoral Associate, University of Geneva, Switzerland
  • 2002-2006: Graduate Studies in Chemistry, MBI, Berlin, Germany

Scientific and Professional Membership

● Member of American Chemical Society (ACS)

Awards

● Long term fellowship, Max-Born Institute, Berlin, Germany

● Post-doctoral Fellowship (JSPS fellowship) & Special post-doctoral researcher (RIKEN fellowship), RIKEN, Japan

● Distinguished scholar award from Arab Fund for Economic and Social Development, Kuwait

● The State Prize in Basic Sciences, Egypt

KAUST Affiliations

● Division of Physical Sciences and Engineering (PSE)