14154-42-8Relevant articles and documents
Improvement of Photoelectrochemical Properties of Chloroaluminum Phthalocyanine Thin Films by Controlled Crystallization and Molecular Orientation
Yanagi, Hisao,Douko, Shinya,Ueda, Yasukiyo,Ashida, Michio,Woehrle, Dieter
, p. 1366 - 1372 (1992)
An orientation-controlled thin film of AlPcCl was prepared by vacuum deposition on a (001) surface of a KCl substrate.In the epitaxially film on KCl AlPcCl molecules stack cofacially, staggering around the Al-Cl-Al bonds and holding the molecular planes parallel to the KCl surface.At a low substrate temperature the deposit was a uniform and closely oriented thin film.As the substrate temperture increased, the film became rugged and cracked due to growth of a large size of crystallites.The photovoltaic properties of the oriented AlPcCl film were measured in a photoelectrochemical cell of ITO/AlPcCl/I3-, I-/Pt.The oriented AlPcCl films showed good rectifying I-V curves of p-type conductance and cathodic photocurrents under illumination of white light.As compared to amorphous or polycrystalline AlPcCl films, photovoltaic efficiency was improved especially in increase of Isc by the epitaxial orientation.The photocurrent quantum yield of the uniform thin film with epitaxial orientation was 25 times as high as that of the rugged and cracked polycrystalline film with large crystallites.The epitaxial AlPcCl film showed an intense peak at 830 nm in the photocurrent action spectrum, which could be attributed to carrier generation from charge-transfer excitons of the cofacially stacked molecules.It was concluded that the reason for the improvement of the photovoltaic properties was that exciton diffusion and charge carrier mobility were larger through the molecular column in the epitaxial film, while exciton trapping and recombination of carriers were probably caused in grain boundaries between crystallites in the polycrystalline film.
Highly photoactive molecular semiconductors: Determination of the essential parameters that lead to an improved photoactivity for modified chloroaluminum phthalocyanine thin films
Santerre,Cote,Veilleux,Saint-Jacques,Dodelet
, p. 7632 - 7645 (1996)
Thin films of chloroaluminum, chlorogallium, and chloroindium phthalocyanines (ClAlPc, ClGaPc, and ClInPc) have been sublimed on SnO2 substrates maintained during sublimation at temperatures ranging from -130 to 190°C. Using this procedure, it is possible to obtain molecular semiconductor layers with a structure varying from amorphous to polycrystalline. These layers were immersed in KI3/KI or KCl solutions at pH = 3.0. This treatment was found to improve drastically the photoelectrochemical activity of ClAlPc thin films. Short-circuit photocurrents Jsc = 0.75 ± 0.25 mA/cm2 were obtained, using polychromatic illumination (35 mW/ cm2), after immersion of ClAlPc into KCl solutions while lower Jsc values (0.3 ± 0.1 mA/cm2) were obtained for KI3/KI solutions. No change in the photoactivity was observed either for ClGaPc or for ClInPc when they were immersed in the same solutions. Both molecular semiconductors provided lower short-circuit photocurrents (Jsc ≤ 0.15 ± 0.03 mA/cm2 for ClGaPc; Jsc ≤ 0.20 ± 0.02 mA/cm2 for ClInPc). The characterization of the chloro-trivalent metal phthalocyanine films indicates that the hydrolysis of the metal-Cl bond is essential for the occurrence of the physicochemical transformation leading to improved photoactivity. The Al-Cl bond of ClAlPc hydrolyzes, but this reaction does not occur for ClGaPc or for ClInPc. In contact with KI3/KI or KCl solutions at pH = 3.0, bulk hydrolysis occurs for ClAlPc, only if both H3O+ and an anion could diffuse from the solution into the material. The large I3- anion is prevented from doing so for polycrystalline ClAlPc films obtained by sublimation on SnO2 substrates maintained at 180°C. However, it can diffuse easily in more disorganized films obtained at lower substrate temperatures. Powders of the chlorotrivalent metal phthalocyanines as well as bromoaluminum phthalocyanine (BrAlPc) were used to quantify anion incorporation in these materials. After complete hydrolysis of BrAlPc (powder) and ClAlPc (films) there are ca. 50-85% of the anions, generated in situ by the hydrolysis reaction or diffusing from the solution as a consequence of the hydrolysis reaction, that remain in the Pc material. Thus, ca. 50-85% of the protons released by the hydrolysis either protonate the macrocycles or react with Pc+O2- already present in the film. In both cases, anions are necessary to neutralize the excess of positive charges. H2O is also found in the modified films. The presence of protonated Pcs, of anions, and of H2O into what is now HOAlPc (after ClAlPc hydrolysis) modifies the structure of the material as well as its photoactivity.
Phase behaviour of halogenated metal phthalocyanines
Napier,Collins
, p. 91 - 104 (1994)
The phase behaviour of chloro-aluminium phthalocyanine, chloro-indium phthalocyanine, bromo-indium phthalocyanine, dichloro-tin phthalocyanine, and dichloro-platinum phthalocyanine is studied using differential scanning calorimetry, X-ray diffraction, and
A New Polymorph of Hydroaluminum Phthalocyanine. Characterization and Photoactivity
Dao, le H.,Perrier, Gerard
, p. 1259 - 1262 (1986)
Sublimed films of α-form hydroxyaluminum phthalocyanine (α-PcAlOH) can be transformed into a novel polymorph by a treatment with aqueous acid solutions.The spectroscopic characterization of the new polymorph, showing its particular visible and IR spectra and X-ray diffraction pattern was achieved by comparing with other polymorphs.The dimorphic transformation of PcAlOH is also associated with a dramatic enhancement in photoactivity as shown in the performance of a photoelectrochemical cell based upon a PcAlOH/redox junction.
Phthalocyanine compound with high thermal stability and high chemical resistance, method for production thereof and ink composition and printing article using the same
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Paragraph 0070-0076, (2020/02/10)
The present invention relates to an aluminum phthalocyanine compound substituted with an ethoxy group having excellent heat resistance and chemical resistance, a method for preparing the same, an ink composition and a printed article using the same. To the present invention, an ethoxy aluminum phthalocyanine compound having 1 a structure represented by the following formula, which is a phthalocyanine 650 - 840 nm-substituted phthalocyanine in which an ethoxy group 1050nm is substituted with aluminum in a central metal, is synthesized with high yield. The compound of formula ([I) as claimed in 1] Claim (by machine translation)
A method of manufacturing the organic pigment (by machine translation)
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Paragraph 0152, (2016/12/16)
PROBLEM TO BE SOLVED: required high contrast and organic pigment particle dispersion stability. SOLUTION: good solvent and an organic pigment solution obtained by dissolving the organic pigment, and good compatibility with the organic pigment and the solvent and solvent to the Oligophagous comprising, respectively, a raw material supply flow path (A, B) is different from, and coupled to a raw material supply flow path in the outlet channel (C) 2 is formed by mixing the pigment particles, the fluid in the supply passage of the organic pigment particles 1000-10000 Reynolds number conditions by the organic pigment particles are precipitated. Aluminum phthalocyanine pigment org. pigment, which is a good solvent, N, N, -dimethyl formamide, N, N, - dimethyl acetamide , 1-methyl-2-pyrrolidone, dimethyl sulfoxide or production of organic pigment. Selected drawing: fig. 1 (by machine translation)
