19717-79-4Relevant articles and documents
Gallium phthalocyanines: Structure analysis and electroabsorption study
Yamasaki, Kazuo,Okada, Okimasa,Inami, Kazuki,Oka, Kozo,Kotani, Masahiro,Yamada, Hideo
, p. 13 - 19 (1997)
Electroabsorption has been measured with thin films of several (phthalocyaninato)galliums. It has been observed that the lowest energy absorption peak of most of the compounds studied is sensitive to the applied electric field. The shape of the electroabsorption spectrum is well reproduced by the second derivative of the corresponding absorption, indicating that the excited state has the character of a charge transfer state. It has been found that a clear correlation exists between the magnitude of the electromodulation and the sensitivity for the charge carrier generation. Crystal structure analysis of two compounds, hydroxygallium phthalocyanine type XI and chlorogallium phthalocyanine type II, made by Rietveld analysis, clarified that the molecules are stacked in pairs. The implication of the dimer structure is discussed.
PHTHALOCYANINE PIGMENT, COLORING COMPOSITION AND COLOR FILTER
-
Paragraph 0161, (2017/11/15)
PROBLEM TO BE SOLVED: To provide a phthalocyanine pigment that has excellent fastness (heat resistance, light fastness, solvent resistance) and, when used for a color filter or the like, is excellent in color properties (lightness) and the contrast ratio, without causing unusual matter due to association, aggregation or the like of molecules with each other even in a high temperature environment above 230°C. SOLUTION: The invention provides: a phthalocyanine pigment having a specific structure represented by general formula (1) or the like; and a coloring composition and a color filter using the phthalocyanine pigment. SELECTED DRAWING: None COPYRIGHT: (C)2017,JPOandINPIT
HYDROXYGALLIUM PHTHALOCYANINE CRYSTAL, ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS
-
Paragraph 0072; 0073, (2016/10/07)
PROBLEM TO BE SOLVED: To provide a novel hydroxygallium phthalocyanine crystal and an electrophotographic photosensitive member capable of outputting an image with few failures due to a ghost phenomenon not only in normal-temperature, normal-humidity environments but also even in low-temperature, low-humidity environments. SOLUTION: The hydroxygallium phthalocyanine crystal has peaks at Bragg angles 2θ±0.2° of 7.5°, 9.9°, 25.2°, and 28.3° as determined by X-ray diffraction with CuKα radiation. The peak intensity of 9.9° is higher than the peak intensity of 7.5°. COPYRIGHT: (C)2016,JPOandINPIT
