cap omega./sup -1/ cm/sup -1/) being observed for (PcAlFI/sub 3/ /sub 4/)/sub n/ derived from sublimed (PcAlF)/sub n/. Iodine doping results in increases in conductivity by factors as high as 10/sup 9/, with the highest conductivity (5. Conductivity of iodine-doped materials was studied by using linear four-probe (300 K) and variable temperature (77 to 300 K) van der Pauw methods on pressed pellets. The pentaiodide band dominated the spectra of all samples with the exception of compositions prepared by heating (PcAlFI/sub 3/ /sub 4/)/sub n/ to temperatures less than 200/sup 0/C for which the 107 cm/sup -1/ (I/sub 3//sup -/) transition was strongest.
The Raman spectra (.nu./sub 0/ = 514.5 nm) of (PcMFI/sub x)/sub n/ showed strong scattering attributable to I/sub 3//sup -/ (106 to 108 cm/sup -1/) and I/sub more » 5//sup -/ (164 to 168 cm/sup -1/). Both Raman and infrared spectroscopy were used to characterize the iodine-doped PcMF materials. Thermogravimetric analysis proved useful for iodine analysis as complete loss of I/sub 2/ is observed for these materials below 250/sup 0/C, leaving a PcMF residue. Using a simple, general trend for the ionic charge for elements on the Periodic Table, in this video we find the ionic charge for Iodine (I). Phthalocyanine-aluminum and phthalocyanine-gallium fluorides have been prepared and doped with iodine to give (PcMFI/sub x/)/sub n/ compositions, where x = 0.012 to 3.4 (M = Al) and x = 0.048 to 2.1 (M = Ga). Advanced Manufacturing Office OSTI Identifier: 1638541 Alternate Identifier(s): OSTI ID: 1410397 Grant/Contract Number: EE0007865 Resource Type: Accepted Manuscript Journal Name: Physical Review Materials Additional Journal Information: Journal Volume: 1 Journal Issue: 6 Journal ID: ISSN 2475-9953 Publisher: American Physical Society (APS) Country of Publication: United States Language: English Subject: 36 MATERIALS SCIENCE 77 NANOSCIENCE AND NANOTECHNOLOGY Chemical bonding Dopants Electrical conductivity Optical phonons Physisorption Iodine Doping Carbon =. Publication Date: Mon Nov 27 00:00: Research Org.: Rice Univ., Houston, TX (United States) Sponsoring Org.: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Energy Efficiency Office. Université Fédérale de Toulouse-Midi-Pyrénées (France).Rensselaer Polytechnic Inst., Troy, NY (United States).
#Iodine charge free
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