51961-93-4Relevant academic research and scientific papers
Highly Conducting Linear Stacked Polymers: Iodine-Doped Fluoroaluminum and Fluorogallium Phthalocyanines
Nohr, Ronald S.,Kuznesof, Paul M.,Wynne, Kenneth J.,Kenney, Malcolm E.,Siebenman, P.G.
, p. 4371 - 4377 (1981)
Phthalocyanine-aluminum and phthalocyanine-gallium fluorides have been prepared and doped with iodine to give (PcMFIx)n compositions, where x=0.012-3.4 (M=Al) and x=0.048-2.1 (M=Ga).Thermogravimetric analysis proved useful for iodine analysis as complete loss of I2 is observed for these materials below 250 deg C, leaving a PcMF residue.Both Raman and infrared spectroscopy were used to characterize the iodine doped PcMF materials.The Raman spectra (ν0=514.5 nm) of (PcMFIx)n showed strong scattering attributable to I3- (106-108 cm-1) and I5- (164-168 cm-1).The pentaiodide band dominated the spectra of all samples with the exception of compositions prepared by heating (PcAlFI3.4)n to temperatures less than 200 deg C for which the 107 cm-1 (I3-) transition was strongest.Conductivity of iodine-doped materials was studied by using linear four-probe (300K) and variable temperature (77-300 K) van der Pauw methods on pressed pellets.Iodine doping results in increases in conductivity by factors as high as 109, with the highest conductivity (5 Ω-1 cm-1) being observed for (PcAlFI3.4)n derived from sublimed (PcALF)n.The conductivity is thermally activated, with an apparent activation energy of 0.017 eV being measured for (PcAlFI3.4)n.
Photoelectrochemistry of some aluminum phthalocyanines in regenerative solar cells
Guay,Dodelet,Cote,Langford,Gravel
, p. 2272 - 2280 (2008/10/08)
Chloroaluminum phthalocyanine (ClAlPc) films sublimed with a high growth rate on SnO2 can be made to undergo two transformations when the films are in contact with an acidic (HCl) aqueous solution: transformation I is obtained if the solution contains I3-I- and transformation H occurs when there is no redox couple in the solution. The short-circuit photocurrents produced by these two transformations are different. Their photoactivities are smaller and their J-V characteristics indicate an increase of J0 after transformation of the film, as in the case of the high growth rate ClAlPc. A fluoroaluminum phthalocyanine film does not undergo any transformation I upon contact with an I3-I- acidic aqueous solution. Also, there is no rectification for this film and its photoactivity is very low. Scanning electron micrographs (SEM) reveal morphology differences between films of different phthalocyanines but no differences are observed by SEM, for the phthalocyanine films, before and after transformation I or H.
