N. Shafizadeh

Publications51
h-index13
Citations478
Highly Influential Citations0
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Femtosecond electronic relaxation of excited metalloporphyrins in the gas phase.
A systematic study of the ultrafast decay of metalloporphyrins containing various transition metals with partially filled 3d shells and zinc (3d filled) is reported here after excitation in the… Expand
  • 47
Photodissociation of H2O and D2O below 132 nm
A complete determination of the rotational and vibrational distributions in the OH/OD(A 2Σ+) fragments which result from the VUV photodissociation of H2O/D2O as a function of excitation energy is… Expand
  • 29
First observation in the gas phase of the ultrafast electronic relaxation pathways of the S(2) states of heme and hemin.
The time evolution of electronically excited heme (iron II protoporphyrin IX, [Fe(II) PP]) and its associated salt hemin (iron III protoporphyrin IX chloride, [Fe(III) PP-Cl]), has been investigated… Expand
  • 24
Infra-red and Raman spectroscopy of free-base and zinc phthalocyanines isolated in matrices.
The infrared absorption spectra of matrix-isolated zinc phthalocyanine (ZnPc) and free-base phthalocyanine (H(2)Pc) have been recorded in the region from 400 to 4000 cm(-1) in solid N(2), Ar, Kr and… Expand
  • 31
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An efficient indirect mechanism for the ultrafast intersystem crossing in copper porphyrins.
The ultrafast dynamics of copper tetraphenylporphyrin (CuTPP), copper octaethylporphyrin (CuOEP), and of the free base tetraphenylporphyrin (H2TPP), excited in the S2 state have been investigated in… Expand
  • 29
Visible luminescence spectroscopy of free-base and zinc phthalocyanines isolated in cryogenic matrices.
The absorption, emission and excitation spectra of ZnPc and H(2)Pc trapped in Ne, N(2), Ar, Kr and Xe matrices have been recorded in the region of the Q states. A comparison of the matrix… Expand
  • 16
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Spectral characterization in a supersonic beam of neutral chlorophyll a evaporated from spinach leaves.
The observation of the light absorption of neutral biomolecules has been made possible by a method implemented for their preparation in the gas phase, in supersonically cooled molecular beams, based… Expand
  • 13
Visible emission from the vibrationally hot C2H radical following vacuum-ultraviolet photolysis of acetylene: Experiment and theory
Photolysis of acetylene has been performed by vacuum-ultraviolet excitation with the synchrotron radiation via the Rydberg states converging to the first ionization potential (IP) at 11.4 eV. Only… Expand
  • 21
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A, C, and D electronic states of the Ar–NO van der Waals molecule revisited: Experiment and theory
The A–X transition of ArNO has been reinvestigated by laser induced fluorescence (LIF) both in the bound–free and bound–bound region. The discrete part of the spectrum is at least two orders of… Expand
  • 24
Photolysis of allene and propyne in the 7-30 eV region probed by the visible fluorescence of their fragments.
The photolysis of allene and propyne, two isomers of C(3)H(4), has been investigated in the excitation energy range of 7-30 eV using vacuum ultraviolet synchrotron radiation. The visible fluorescence… Expand
  • 6