NONLINEAR OPTICAL ORGANIC MATERIAL
    51.
    发明专利

    公开(公告)号:JPS6259934A

    公开(公告)日:1987-03-16

    申请号:JP19970585

    申请日:1985-09-10

    Abstract: PURPOSE:To obtain the titled material having a large 2nd high frequency generating capacity (SHG) and a high stability at a room temp. and a large-sized monocrystal by incorporating a specific org. compd. to the titled material. CONSTITUTION:The titled material comprises a 2-amino fluorenone shown by formula I or a 4-amino-4'-nitrobiphenyl shown by formula II. The prescribed compds. may grow to the large monocrystal by a slow evaporation method. The prescribed compds. has a SHG larger than that of an urea by few times and has a good stability at the room temp. and may be easily grown to the large monocrystal. Thus, the titled material is used for materials of an optical wavelength conversion element, an optical shutter, a high switching element, a optical logical gate and an phototransistor.

    RELOADABLE COLOR IMAGE RECORDING MEDIUM AND IMAGE FORMING METHOD BY LIGHT USING THE SAME

    公开(公告)号:JP2000089398A

    公开(公告)日:2000-03-31

    申请号:JP25253398

    申请日:1998-09-07

    Abstract: PROBLEM TO BE SOLVED: To provide a reloadable color image recording medium by light of a short recording time and a color image recording method using the same. SOLUTION: This color image recording medium is formed by holding a compsn. obtd. by adding a 0.5 to 10 wt.% photochromic compd. to cholesteric liquid crystalline compds. having a mol.wt. of =35 deg.C between two sheets of substrates or films at least one of which are transparent or a mixture composed of these liquid crystalline compds. This color image forming method consists in subjecting the reloadable color image recording medium formed by holding the compsn. described above between two sheets of the substrates or films at least one of which are transparent to photoirradiation at a temp. at which the compsn. exhibits cholesteric liquid crystallinity or below, then rapidly cooling the recording medium down to a temp. below the glass transition tamp. at a rate of >=1 deg.C/sec.

    FULL-COLOR THERMAL RECORDING MATERIAL

    公开(公告)号:JP2000044592A

    公开(公告)日:2000-02-15

    申请号:JP21759698

    申请日:1998-07-31

    Abstract: PROBLEM TO BE SOLVED: To obtain a new liquid crystalline compound consisting of a specific cholesterol derivative, capable of exhibiting red color hard to be developed with conventional thermal recording materials, and useful as an erasable full- color thermal recording material or the like. SOLUTION: This new liquid crystalline compound consisting of a new cholesterol derivative is shown by formula I [A is an 1,5-hexadienylene of formula II (R is H or methyl); Y is a cholesterol residue as a result of eliminating the hydroxyl group from cholesterol; (n) is 5-7], e.g. 8,12-eicosadienoic diacid dicholesteryl ester. This liquid crystalline compound is useful as e.g. a full-color thermal recording material freed from such a problem being hard to present red color as to be involved in conventional erasable full-color thermal recording materials. This compound of formula I is obtained by reaction of a dicarboxylic acid such as 8,12-eicosadienoic diacid with the corresponding cholesterol in the presence of dicyclohexylcarbodiimide and 4-dimethylaminopyridine.

    ORGANIC POLYMER MOLDING AND ITS PRODUCTION

    公开(公告)号:JPH11258642A

    公开(公告)日:1999-09-24

    申请号:JP7660398

    申请日:1998-03-10

    Abstract: PROBLEM TO BE SOLVED: To obtain an org. polymer molding in which the refractive index can be reversibly changed with a large change width, and moreover, which can be easily formed, by using a material in which the refractive index is reversibly changed by irradiation of incoherent light and stopping the irradiation and controlling the change width of the refractive index to a specified value or larger. SOLUTION: The refractive index of the formed body is reversibly changed by irradiation of incoherent light or by stopping the irradiation, and further, the change width of the refractive index is >=0.005. From the viewpoints of easy production and a large change rate of the refractive index, the org. polymer which constitutes the formed body is preferably a linear or branched-chain org. polymer having polar org. groups on the side chains. Generally, the mol.wt. of the org. polymer ranges 1.000 to 500,000 of the weight average mol.wt., and preferably 5,000 to 300,000. Further, 2,6-diphenyl-4-(2,4,6-triphenylpyridinio)- phenolate is preferably added as an additive.

    PRODUCTION OF NEW CONJUGATED POLYMER MATERIAL BY SOLID-PHASE POLYMERIZATION

    公开(公告)号:JPH04189805A

    公开(公告)日:1992-07-08

    申请号:JP32034290

    申请日:1990-11-22

    Abstract: PURPOSE:To easily obtain the subject material useful for electronic material, etc., by a solid-phase polymerization comprising the irradiation of a crystal of a specific tetraacetylene molecule with light or radiation or by a two-stage solid-phase polymerization comprising the thermal polymerization of the above crystal at a temperature below its melting point and the post-polymerization of the obtained polymer. CONSTITUTION:The objective conjugated polymer material consisting of a di(polydiacetylene) of formula IV can be produced either by irradiating a crystal of the molecule of a tetraacetylene of formula I [R and R' are CH3(CH2)x (x is 0-19) or group of formula II (y is 0-19; z is 1-9)] (e.g. 15,17,19,21- hexatriacontatetrayne) with light (e.g. ultraviolet light or visible light) or radiation (e.g. X-ray or gamma-ray) or by heating the crystal at a temperature below the melting point of the crystal to obtain a polymer of formula III (n is polymerization degree) and irradiating the polymer with light (e.g. ultraviolet light or visible light) or radiation (e.g. X-ray or gamma-ray) or heating the polymer.

    MANUFACTURE OF MULTI-DIMENSIONAL POLYMER CRYSTAL

    公开(公告)号:JPH0291106A

    公开(公告)日:1990-03-30

    申请号:JP24315088

    申请日:1988-09-28

    Abstract: PURPOSE:To produce the title crystal which has a high strength isotropically and a network structure having covalent bonds multi-dimensionally by subjecting crystals obtained from diacetylenedicarboxylic acid, a polyvalent metal carbonate and/or a polyvalent metal acetate to solid-state polymerization. CONSTITUTION:0.1-100mmol/l of a solution of a diacetylenedicarboxylic acid of the given formula (wherein n is 0-20) is added to a solution of a polyvalent metal carbonate and/or a polyvalent metal acetate (e.g., copper acetate) in a molar ratio of the acid to the metal salt of 1:(1-2) to form a homogeneous solution or suspension, which is stirred to react them at room temperature to 100 deg.C or below, thereby producing diacetylenedicarboxylic acid metal salt crystals. The crystals are irradiated with ultraviolet light for several to 100 hours, or with tens of MRad to hundreds of MRad or gamma ray (e.g., cobalt 60) in a vacuum, or are heated at tens of degrees to 200 deg.C for tens of hours to hundreds of hours, or are subjected to several thousands to ten thousands of atmospheres for tens of minutes, thereby effecting the solid-state polymerization.

    ORGANIC MATERIAL FOR NON-LINEAR OPTICAL USE

    公开(公告)号:JPS6348265A

    公开(公告)日:1988-02-29

    申请号:JP19240486

    申请日:1986-08-18

    Abstract: PURPOSE:To obtain the titled material useful as material for a light wavelength converting element, etc., stable at room temperature, readily providing large single crystal, comprising p-toluenesulfonic acid 1-methyl-4-[2-(4-hydroxyphenyl) vinyl[pyridinium. CONSTITUTION:An organic material for non-linear optical use comprising p- toluenesulfonic acid 1-methyl-4-[2-(4-hydroxyphenyl)vinyl] pyridinium shown by formula I and one comprising p-toluenesulfonyl acid 1-methyl-4-[2-(4-(N,N- dimethylamino)phenyl)] vinyl pyridinium shown by formula II. The compounds shown by formula I and formula II are synthesized by condensing 1,4- dimethylbipyridinium obtained from gamma-picoline and methyl iodide with 4- hydroxybenzaldehyde and 4-(N,N-dimethylamino)benzaldehyde through dehydration and reacting the reaction products with p-toluenesulfonic acid. Large single crystal is obtained by slow evaporation method, etc.

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