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Total result(s) found: 12
  • 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)
Keywords:
Diketopyrrolopyrrole (DPP) chromophores, Photophysics
  • 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)
Keywords:
Solar cell, Perovskite, SrTiO3, Electron transport layer, Transient absorption spectroscopy
  • 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)
Keywords:
Electron Transfer, Rubrene–benzoquinone, Rubrene–porphyrin
  • 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
    J. Phys. Chem. Lett. 5(19), pp 3386-3390, (2014)
Keywords:
Platinum-oligomer, Ultrafast charge transfer, Cationic porphyrin, Femtosecond transient absorption spectroscopy
  • Ultrafast electron injection at the cationic porphyrin- graphene interface assisted by molecular flattening
    Shawkat Aly, Manas Parida, Erkki Alarousu, and Omar F. Mohammed
    Chem. Commun., 50(72), pp 10452-10455, (2014)
Keywords:
Ultrafast transient absorption, Porphyrin-Graphene
  • 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, pp 10475-10483, (2014)
Keywords:
Femtochemistry, Femtosecond transient absorption spectroscopy, Nanohybrids
  • Ultrafast carrier trapping of a metal-doped titanium dioxide semiconductor revealed by femtosecond transient absorption spectroscopy
    Jingya Sun, Yang Yang, Jafar I. Khan, Erkki Alarousu, Zaibing Guo, Xixiang Zhang, Qiang Zhang, and Omar F. Mohammed
    ACS Appl Mater Inter, 6(13), pp 10022-10027, (2014)
Keywords:
Metal-doped titanium dioxide, Transient absorption spectroscopy
  • Excited-state intramolecular hydrogen transfer (ESIHT) of 1,8-Dihydroxy-9,10-anthraquinone (DHAQ) characterized by ultrafast electronic and vibrational spectroscopy and computational modeling
    Omar F. Mohammed, Dequan Xiao, Victor S. Batista, and Erik T. J. Nibbering
    J. Phys. Chem. A, 118 (17), pp 3090–3099, (2014)
Keywords:
Ultrafast electronic and vibrational spectroscopy, Computational modeling
  • Remarkable fluorescence enhancement versus complex formation of cationic porphyrins on the surface of ZnO nanoparticles
    Shawkat M. B. Aly, Mohamed Eita, Jafar I. Khan, Erkki Alarousu, and Omar F. Mohammed
    J. Phys. Chem. C, 118(23), pp 12154-12161, (2014)
Keywords:
Fluorophores, Bio-imaging, Cationic porphyrins
  • Real-time observation of ultrafast intraband relaxation and exciton multiplication in PbS quantum dots
    Ala’a O. El-Ballouli, Erkki Alarousu, Anwar Usman, Jun Pan, Osman M. Bakr, and Omar F. Mohammed
    ACS Photonics, 1 (3), pp 285–292, (2014)
Keywords:
Inraconduction band relaxation, Exciton multiplication, PbS quantum dots, Femtosecond broadband transient absorption spectroscopy
  • Quantum confinement-tunable ultrafast charge transfer at the PbS quantum dot and phenyl-C61-butyric acid methyl ester interface
    Ala’a O. El-Ballouli, Erkki Alarousu, Marco Bernardi, Shawkat M. Aly, Alec P. Lagrow, Osman M. Bakr, and Omar F. Mohammed
    J. Am. Chem. Soc., 136 (19), pp 6952–6959, (2014)
Keywords:
Quantum dots
  • Generation of multiple excitons in Ag2S quantum dots: single high-energy versus multiple-photon excitation
    Jingya Sun, Weili Yu, Anwar Usman, Tayirjan T. Isimjan, Silvano DGobbo, Erkki Alarousu, Kazuhiro Takanabe, and Omar F. Mohammed
    J. Phys. Chem. Lett., 5 (4), pp 659–665, (2014)
Keywords:
Exciton multiplication, Ag2S quantum dots, Femtosecond broad-band transient spectroscopy, Auger recombination