JP5888644B2 - エレクトロクロミック表示素子及びエレクトロクロミック表示素子の製造方法 - Google Patents
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- UXXYNUIRBYZVNQ-UHFFFAOYSA-N 1-dodecyl-4-(1-dodecylpyridin-1-ium-4-yl)pyridin-1-ium Chemical compound C1=C[N+](CCCCCCCCCCCC)=CC=C1C1=CC=[N+](CCCCCCCCCCCC)C=C1 UXXYNUIRBYZVNQ-UHFFFAOYSA-N 0.000 description 1
- MWVTWFVJZLCBMC-UHFFFAOYSA-N 4,4'-bipyridine Chemical compound C1=NC=CC(C=2C=CN=CC=2)=C1 MWVTWFVJZLCBMC-UHFFFAOYSA-N 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- SNRUBQQJIBEYMU-UHFFFAOYSA-N Dodecane Natural products CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
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- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 125000003710 aryl alkyl group Chemical group 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
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- 238000011161 development Methods 0.000 description 1
- ZOMNIUBKTOKEHS-UHFFFAOYSA-L dimercury dichloride Chemical class Cl[Hg][Hg]Cl ZOMNIUBKTOKEHS-UHFFFAOYSA-L 0.000 description 1
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- 229910052736 halogen Inorganic materials 0.000 description 1
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- 125000003187 heptyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
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- INHCSSUBVCNVSK-UHFFFAOYSA-L lithium sulfate Inorganic materials [Li+].[Li+].[O-]S([O-])(=O)=O INHCSSUBVCNVSK-UHFFFAOYSA-L 0.000 description 1
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- 125000001421 myristyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000002114 nanocomposite Substances 0.000 description 1
- 125000001624 naphthyl group Chemical group 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 125000001400 nonyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
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- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
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- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
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- 235000011164 potassium chloride Nutrition 0.000 description 1
- 239000001103 potassium chloride Substances 0.000 description 1
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- 238000010408 sweeping Methods 0.000 description 1
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- RBTVSNLYYIMMKS-UHFFFAOYSA-N tert-butyl 3-aminoazetidine-1-carboxylate;hydrochloride Chemical compound Cl.CC(C)(C)OC(=O)N1CC(N)C1 RBTVSNLYYIMMKS-UHFFFAOYSA-N 0.000 description 1
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- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
Description
図1は、本発明の実施形態1に係るエレクトロクロミック表示素子(以下「本表示素子」という。)1の概略を示す図である。一対の基板2a、2bの間に液体からなる媒体4が挟持され、基板2a、2bの上には電極3a、3bがそれぞれ形成されている。
まず、ITOナノ粒子(C.I.Kasei社製、Nanotek(登録商標) Powder ITO−R、平均粒子サイズ:30nm)と、ビオロゲン化合物1,1’−ジドデシル−4,4’−ビピリジニウム(以下「DDV2+」という。)ジブロマイドを用いた。DDV2+の合成は、“M.−P.Pileni,A.M.Braun,M.Gratzel,Photochem.Photobiol.31(1980)423−427.”、“M.Suzuki,M.Kimura,K.Hanabusa,H.Shirai,Macromol.Chem.Phys.199(1998)945−948.”、及び、“T.Abe,T.Fujita,K.Sekimoto,A.Tajiri,M.Kaneko,J.Mol.Catal.A:Chem.201(2003)55−62.”に従って合成した。なお、このDDV2+は有機溶媒に可溶であり、ほぼ無色透明だが、1電子還元反応によって青色のカチオンラジカルとなり、逆の酸化反応で元の無色透明の状態へと戻る。またDDV2+は疎水性が高く、水に不溶である。
エレクトロクロミック特性の検討は、0.1Mの硫酸リチウム(Li2SO4・H2O,Wako Pure Chemicals,>99%)水溶液中で行った。図2は、本特性の検討において用いた電解セルの構成を示す図である。本検討において用いた電解セルは、直方体の主室5と、円柱形の副室6からなり、G4ガラスフィルター10で隔てられている。主室5には動作電極(ITO/DDVコンポジット膜電極)9と対向電極(リング状のPt電極)8が浸漬されている。一方、副室6には参照電極(飽和カロメル電極,SCE)13へとつながる塩化カリウム塩橋14が浸漬されている。またDDV2+の電気化学的挙動は、エレクトロケミカルアナライザー(BAS Co.,model 750A)を用い、サイクリックボルタンメトリーにより検討した。また、サイクリックボルタンメトリーと同時に、紫外可視分光光度計(Ocean optics Inc.,USB4000−UV−vis spectrometerとDH−2000 deuterium tungsten halogen light source)と光ファイバーシステムを用い、UV−visスペクトルを測定した。図中7は参照光を、11はKCl水溶液を、15は窒素ガス入り口をそれぞれ示している。
図3に、ITO/DDVコンポジット膜電極に対するサイクリックボルタンメトリーの結果であるサイクリックボルタンモグラムを、図4にこのサイクリックボルタンメトリーと同時に測定した電位−吸光度(着色膜の吸収極大である512nmでの吸光度)のプロットを示す。
これまでの検討で、2μmという比較的薄い膜を用いた場合には、物質の拡散の影響を小さくすることができ、高速応答が可能であることがわかった。しかしながら、着色状態の呈色を濃くし、画像のコントラストを上げようとする場合にはより厚い膜の利用が必要となる。そこで次に、膜厚を変えて物質の拡散の影響を検討した。
Claims (3)
- 電極が形成された一対の基板と、前記一対の基板の間に挟持された親水性の媒体と、を有するエレクトロクロミック表示素子であって、
前記電極の少なくとも一つは、ITOナノ粒子及び疎水性のビオロゲン化合物を混合した膜であるエレクトロクロミック表示素子。 - 前記膜の膜厚が20μm以下である請求項1記載のエレクトロクロミック表示素子。
- 基板にITOナノ粒子及び疎水性のビオロゲン化合物を混合した分散液を塗布する塗布工程と、
前記塗布工程の後に前記基板を乾燥する乾燥工程と、
親水性の溶媒を、前記基板を少なくとも一方に含む一対の基板の間に保持させる工程と、を有するエレクトロクロミック表示素子の製造方法。
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Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |