JP6636949B2 - 銀ナノワイヤーの製造方法、該方法で得られた銀ナノワイヤー及び該銀ナノワイヤーを含有するインク - Google Patents
銀ナノワイヤーの製造方法、該方法で得られた銀ナノワイヤー及び該銀ナノワイヤーを含有するインク Download PDFInfo
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- JP6636949B2 JP6636949B2 JP2016566193A JP2016566193A JP6636949B2 JP 6636949 B2 JP6636949 B2 JP 6636949B2 JP 2016566193 A JP2016566193 A JP 2016566193A JP 2016566193 A JP2016566193 A JP 2016566193A JP 6636949 B2 JP6636949 B2 JP 6636949B2
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- silver
- silver nanowire
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- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 title claims description 97
- 239000002042 Silver nanowire Substances 0.000 title claims description 85
- 238000004519 manufacturing process Methods 0.000 title claims description 27
- 238000000034 method Methods 0.000 title description 5
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 48
- -1 amide compound Chemical class 0.000 claims description 26
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 claims description 26
- 229920000642 polymer Polymers 0.000 claims description 25
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 23
- 229940100890 silver compound Drugs 0.000 claims description 22
- 150000003379 silver compounds Chemical class 0.000 claims description 22
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 21
- 239000002904 solvent Substances 0.000 claims description 21
- 229920001145 Poly(N-vinylacetamide) Polymers 0.000 claims description 17
- 229920005862 polyol Polymers 0.000 claims description 15
- 150000003077 polyols Chemical class 0.000 claims description 15
- 229910001961 silver nitrate Inorganic materials 0.000 claims description 13
- 125000004432 carbon atom Chemical group C* 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 12
- 239000000178 monomer Substances 0.000 claims description 12
- 239000004332 silver Substances 0.000 claims description 12
- 229910052709 silver Inorganic materials 0.000 claims description 12
- ZQXSMRAEXCEDJD-UHFFFAOYSA-N n-ethenylformamide Chemical compound C=CNC=O ZQXSMRAEXCEDJD-UHFFFAOYSA-N 0.000 claims description 11
- 239000003638 chemical reducing agent Substances 0.000 claims description 10
- 229920001577 copolymer Polymers 0.000 claims description 7
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 5
- IUWVWLRMZQHYHL-UHFFFAOYSA-N n-ethenylpropanamide Chemical compound CCC(=O)NC=C IUWVWLRMZQHYHL-UHFFFAOYSA-N 0.000 claims description 5
- 150000003242 quaternary ammonium salts Chemical class 0.000 claims description 5
- REYHXKZHIMGNSE-UHFFFAOYSA-M silver monofluoride Chemical compound [F-].[Ag+] REYHXKZHIMGNSE-UHFFFAOYSA-M 0.000 claims description 5
- RBWNDBNSJFCLBZ-UHFFFAOYSA-N 7-methyl-5,6,7,8-tetrahydro-3h-[1]benzothiolo[2,3-d]pyrimidine-4-thione Chemical compound N1=CNC(=S)C2=C1SC1=C2CCC(C)C1 RBWNDBNSJFCLBZ-UHFFFAOYSA-N 0.000 claims description 4
- 125000003342 alkenyl group Chemical group 0.000 claims description 4
- 125000000217 alkyl group Chemical group 0.000 claims description 4
- 239000011203 carbon fibre reinforced carbon Substances 0.000 claims description 4
- CQLFBEKRDQMJLZ-UHFFFAOYSA-M silver acetate Chemical compound [Ag+].CC([O-])=O CQLFBEKRDQMJLZ-UHFFFAOYSA-M 0.000 claims description 4
- 229940071536 silver acetate Drugs 0.000 claims description 4
- ADZWSOLPGZMUMY-UHFFFAOYSA-M silver bromide Chemical compound [Ag]Br ADZWSOLPGZMUMY-UHFFFAOYSA-M 0.000 claims description 4
- 229940096017 silver fluoride Drugs 0.000 claims description 4
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 claims description 4
- KZJPVUDYAMEDRM-UHFFFAOYSA-M silver;2,2,2-trifluoroacetate Chemical compound [Ag+].[O-]C(=O)C(F)(F)F KZJPVUDYAMEDRM-UHFFFAOYSA-M 0.000 claims description 4
- ZXSQEZNORDWBGZ-UHFFFAOYSA-N 1,3-dihydropyrrolo[2,3-b]pyridin-2-one Chemical compound C1=CN=C2NC(=O)CC2=C1 ZXSQEZNORDWBGZ-UHFFFAOYSA-N 0.000 claims description 3
- 229910021607 Silver chloride Inorganic materials 0.000 claims description 3
- 150000003334 secondary amides Chemical class 0.000 claims description 3
- 229910001958 silver carbonate Inorganic materials 0.000 claims description 3
- LKZMBDSASOBTPN-UHFFFAOYSA-L silver carbonate Substances [Ag].[O-]C([O-])=O LKZMBDSASOBTPN-UHFFFAOYSA-L 0.000 claims description 3
- SDLBJIZEEMKQKY-UHFFFAOYSA-M silver chlorate Chemical compound [Ag+].[O-]Cl(=O)=O SDLBJIZEEMKQKY-UHFFFAOYSA-M 0.000 claims description 3
- YPNVIBVEFVRZPJ-UHFFFAOYSA-L silver sulfate Chemical compound [Ag+].[Ag+].[O-]S([O-])(=O)=O YPNVIBVEFVRZPJ-UHFFFAOYSA-L 0.000 claims description 3
- 229910000367 silver sulfate Inorganic materials 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 description 19
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical group N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 15
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 15
- 229910001873 dinitrogen Inorganic materials 0.000 description 15
- 239000000243 solution Substances 0.000 description 12
- NHGXDBSUJJNIRV-UHFFFAOYSA-M tetrabutylammonium chloride Chemical compound [Cl-].CCCC[N+](CCCC)(CCCC)CCCC NHGXDBSUJJNIRV-UHFFFAOYSA-M 0.000 description 12
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- 150000001340 alkali metals Chemical class 0.000 description 8
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- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
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- LXEKPEMOWBOYRF-UHFFFAOYSA-N [2-[(1-azaniumyl-1-imino-2-methylpropan-2-yl)diazenyl]-2-methylpropanimidoyl]azanium;dichloride Chemical compound Cl.Cl.NC(=N)C(C)(C)N=NC(C)(C)C(N)=N LXEKPEMOWBOYRF-UHFFFAOYSA-N 0.000 description 2
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- 239000011521 glass Substances 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- XXMIOPMDWAUFGU-UHFFFAOYSA-N hexane-1,6-diol Chemical compound OCCCCCCO XXMIOPMDWAUFGU-UHFFFAOYSA-N 0.000 description 1
- 238000004128 high performance liquid chromatography Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 125000000555 isopropenyl group Chemical group [H]\C([H])=C(\*)C([H])([H])[H] 0.000 description 1
- 239000005453 ketone based solvent Substances 0.000 description 1
- 239000012280 lithium aluminium hydride Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229940088644 n,n-dimethylacrylamide Drugs 0.000 description 1
- YLGYACDQVQQZSW-UHFFFAOYSA-N n,n-dimethylprop-2-enamide Chemical compound CN(C)C(=O)C=C YLGYACDQVQQZSW-UHFFFAOYSA-N 0.000 description 1
- LHZKBEIDLMQPEZ-UHFFFAOYSA-N n-ethenylformamide Chemical compound C=CNC=O.C=CNC=O LHZKBEIDLMQPEZ-UHFFFAOYSA-N 0.000 description 1
- 239000002121 nanofiber Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 125000004433 nitrogen atom Chemical group N* 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 229920000191 poly(N-vinyl pyrrolidone) Polymers 0.000 description 1
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 description 1
- 229920001515 polyalkylene glycol Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229940113115 polyethylene glycol 200 Drugs 0.000 description 1
- 229940068886 polyethylene glycol 300 Drugs 0.000 description 1
- 239000011112 polyethylene naphthalate Substances 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 239000003505 polymerization initiator Substances 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 229920006316 polyvinylpyrrolidine Polymers 0.000 description 1
- 239000001103 potassium chloride Substances 0.000 description 1
- 235000011164 potassium chloride Nutrition 0.000 description 1
- 239000004323 potassium nitrate Substances 0.000 description 1
- 235000010333 potassium nitrate Nutrition 0.000 description 1
- 239000004304 potassium nitrite Substances 0.000 description 1
- 235000010289 potassium nitrite Nutrition 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 235000019260 propionic acid Nutrition 0.000 description 1
- 229960004063 propylene glycol Drugs 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 235000019423 pullulan Nutrition 0.000 description 1
- 239000012521 purified sample Substances 0.000 description 1
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 239000010944 silver (metal) Substances 0.000 description 1
- YDHABVNRCBNRNZ-UHFFFAOYSA-M silver perchlorate Chemical compound [Ag+].[O-]Cl(=O)(=O)=O YDHABVNRCBNRNZ-UHFFFAOYSA-M 0.000 description 1
- 239000012279 sodium borohydride Substances 0.000 description 1
- 229910000033 sodium borohydride Inorganic materials 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 235000009518 sodium iodide Nutrition 0.000 description 1
- 239000004317 sodium nitrate Substances 0.000 description 1
- 235000010344 sodium nitrate Nutrition 0.000 description 1
- 235000010288 sodium nitrite Nutrition 0.000 description 1
- 239000000600 sorbitol Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 229940116411 terpineol Drugs 0.000 description 1
- CBXCPBUEXACCNR-UHFFFAOYSA-N tetraethylammonium Chemical compound CC[N+](CC)(CC)CC CBXCPBUEXACCNR-UHFFFAOYSA-N 0.000 description 1
- YMBCJWGVCUEGHA-UHFFFAOYSA-M tetraethylammonium chloride Chemical compound [Cl-].CC[N+](CC)(CC)CC YMBCJWGVCUEGHA-UHFFFAOYSA-M 0.000 description 1
- DDFYFBUWEBINLX-UHFFFAOYSA-M tetramethylammonium bromide Chemical compound [Br-].C[N+](C)(C)C DDFYFBUWEBINLX-UHFFFAOYSA-M 0.000 description 1
- BGQMOFGZRJUORO-UHFFFAOYSA-M tetrapropylammonium bromide Chemical compound [Br-].CCC[N+](CCC)(CCC)CCC BGQMOFGZRJUORO-UHFFFAOYSA-M 0.000 description 1
- FBEVECUEMUUFKM-UHFFFAOYSA-M tetrapropylazanium;chloride Chemical compound [Cl-].CCC[N+](CCC)(CCC)CCC FBEVECUEMUUFKM-UHFFFAOYSA-M 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 239000004034 viscosity adjusting agent Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/07—Metallic powder characterised by particles having a nanoscale microstructure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/16—Making metallic powder or suspensions thereof using chemical processes
- B22F9/18—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds
- B22F9/24—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from liquid metal compounds, e.g. solutions
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/52—Electrically conductive inks
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/20—Conductive material dispersed in non-conductive organic material
- H01B1/22—Conductive material dispersed in non-conductive organic material the conductive material comprising metals or alloys
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B5/00—Non-insulated conductors or conductive bodies characterised by their form
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2301/00—Metallic composition of the powder or its coating
- B22F2301/25—Noble metals, i.e. Ag Au, Ir, Os, Pd, Pt, Rh, Ru
- B22F2301/255—Silver or gold
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
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- Spectroscopy & Molecular Physics (AREA)
- Manufacturing & Machinery (AREA)
- Crystallography & Structural Chemistry (AREA)
- Nanotechnology (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
- Powder Metallurgy (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
Description
・Xia, et al. Acc. Chem. Res. 2007, 40, 1067.
・是津信行, 日本結晶成長学会誌, 2010, 37, No. 4, 281
重量平均分子量Mwの測定にはゲルパーミエーションクロマトグラフィー(以下GPCと省略する)を用い、プルラン(標準試料)に換算した値で求めた。なおGPCの測定条件は以下のとおりである。
溶離液 :蒸留水
検出器 :shodex RI−201I
ポンプ :SHIMADZU LC−20AD
カラムオーブン :SHODEX AO−30C
解析装置 :SHIMAZU SIC 480II Deta Station
ポンプ流速 :0.7mL/min
カラム :Shodex GPC SB−806 HQ 2本
カラム温度 :40℃
試料濃度 :0.2質量%
注入量 :200μL
銀ナノワイヤーの形状(長さ・直径)は、株式会社日立ハイテクノロジーズ製超高分解能電界放出形走査電子顕微鏡SU8020(加速電圧3〜10kV)を用いて100本のナノワイヤーの径を観測した。
精製サンプルの熱重量分析はNETZSCH社製TG/DTAを用いて行った。
1L三口フラスコにN−ビニルホルムアミド(東京化成工業(株)製、100g、1.41mol)および純水400gを加え完全に溶解させた後、気相と液相を窒素ガスで2時間置換(気相は窒素ガスフロー、液相は窒素ガスバブリング)した。液相の窒素ガス置換のみを止め、気相を窒素ガスフローさせたまま60℃まで昇温した。重合開始剤としてV−50(和光純薬工業(株)製、0.9g、3.32mmol)を純水10gに溶解させ、シリンジを用いて系中に加えた。60℃で6時間反応を継続した後、反応液をバットにあけオーブンに入れて、常圧で乾燥具合を見ながら突沸しないように120℃までゆっくり昇温し、最終的に真空オーブンに移して24時間減圧乾燥させることでポリ(N−ビニルホルムアミド)を白色固体として77g得た。GPCによる分子量測定の結果、Mwは160000であった。
東京理化機械(株)製のパーソナル有機合成装置PPS−CTRL1用反応容器に、プロピレングリコール20g、合成例1で合成したポリ(N−ビニルホルムアミド)0.68g(9.6mmol)を仕込み、60℃で1時間撹拌することで完全に溶解させた。バイアル瓶に硝酸銀(和光純薬工業(株)製)0.3g、プロピレングリコール4gを入れ室温で撹拌することで完全に溶解させた。塩化テトラブチルアンモニウム(ACROS社製)の1質量%プロピレングリコール溶液0.738g(26.6μmol)を反応容器に添加した後、反応容器上部に滴下漏斗を設置して先に調製した硝酸銀溶液を投入した。枝管より窒素ガスを300mL/minの流量で5分間流して系を窒素ガス置換した。枝管の窒素ガスを止め温度計を設置し、内温が130℃となるまで昇温した。内温130℃にて6分間かけて滴下漏斗の内容物を滴下し、さらに130℃で1時間反応を継続した。反応混合物をエタノールで5倍に希釈し、遠心分離機を用いて6000rpmの回転数で5分間処理することで銀ナノワイヤーを沈降させた。エタノール50gを添加し6000rpmで5分間処理する操作をさらに2回行い系中に残存するポリ(N−ビニルホルムアミド)及び溶媒を洗浄した。得られたワイヤーについて電界放出形走査電子顕微鏡(FE−SEM)を用いてワイヤーの形状を測定し。得られた銀ナノワイヤーの形状を表1に、電界放出形走査電子顕微鏡(FE−SEM)画像を図1に示す。
合成例1で合成したポリ(N−ビニルホルムアミド)0.68g(9.6mmol)の代わりにポリ(N−ビニルアセトアミド)(以下PNVAと略する昭和電工(株)製)GP191−405(Mw:130000、0.817g、9.6mmol)を用い、130℃での反応時間を1時間から20分間に変更した以外は実施例1同様の条件により銀ナノワイヤーを得て、ワイヤーの形状を測定した。得られた銀ナノワイヤーの形状を表1に、電界放出形走査電子顕微鏡(FE−SEM)画像を図2に示す。
PNVAとしてGP191−405(Mw:260000)を用いた以外は実施例2と同様の条件により銀ナノワイヤーを得て、ワイヤーの形状を測定した。得られた銀ナノワイヤーの形状を表1に、電界放出形走査電子顕微鏡(FE−SEM)画像を図3に示す。
PNVAとしてGE191−205(Mw:180000)を用いた以外は実施例2と同様の条件により銀ナノワイヤーを得て、ワイヤーの形状を測定した。得られた銀ナノワイヤーの形状を表1に、電界放出形走査電子顕微鏡(FE−SEM)画像を図4に示す。
合成例1で合成したポリ(N−ビニルホルムアミド)0.68g(9.6mmol)の代わりにN−ビニルアセトアミドとアクリロニトリルの9対1共重合体(以下NVA/ANと略する昭和電工(株)製、Mw:150000)0.82g(9.6mmol)を用いた以外は実施例1同様の条件により銀ナノワイヤーを得て、ワイヤーの形状を測定した。得られた銀ナノワイヤーの形状を表1に、電界放出形走査電子顕微鏡(FE−SEM)画像を図5に示す。
合成例1で合成したポリ(N−ビニルホルムアミド)0.68g(9.6mmol)の代わりにN−ビニルアセトアミドとメタクリル酸メチルの9対1共重合体(以下NVA/MMAと略する昭和電工(株)製、Mw:150000)0.82g(9.6mmol)を用いた以外は実施例1同様の条件により銀ナノワイヤーを得て、ワイヤーの形状を測定した。得られた銀ナノワイヤーの形状を表1に、電界放出形走査電子顕微鏡(FE−SEM)画像を図6に示す。
東京理化機械(株)製のパーソナル有機合成装置PPS−CTRL1用反応容器に、プロピレングリコール20g、PNVA GP191−405(Mw:130000)0.54g(6.4mmol)を仕込み、60℃で1時間撹拌することで完全に溶解させた。バイアル瓶に硝酸銀(和光純薬工業(株)製)0.075g、プロピレングリコール1gを入れ室温で撹拌することで完全に溶解させた。塩化テトラブチルアンモニウム(ACROS社製)の1質量%プロピレングリコール溶液0.738g(26.6μmol)を反応容器に添加した後、反応容器上部に滴下漏斗を設置して先に調製した硝酸銀溶液を投入した。枝管より窒素ガスを300mL/minの流量で流して系を窒素ガス置換しつつ、内温が130℃となるまで昇温した。内温130℃にて1分間かけて滴下漏斗の内容物を滴下し、さらに130℃で1時間反応を継続した。反応混合物をエタノールで5倍に希釈し、遠心分離機を用いて6000rpmの回転数で5分間処理することで銀ナノワイヤーを沈降させた。エタノール50gを添加し6000rpmで5分間処理する操作をさらに2回行い系中に残存するPNVA及び溶媒を洗浄した。得られたワイヤーについて電界放出形走査電子顕微鏡(FE−SEM)を用いてワイヤーの形状を測定した。得られた銀ナノワイヤーの形状を表1に、電界放出形走査電子顕微鏡(FE−SEM)画像を図7に示す。
1L四つ口フラスコ(メカニカルスターラー、滴下漏斗、還流管、温度計)にプロピレングリコール200g、PNVA GP191−405(Mw:130000、8.17g、96mmol)を仕込み、60℃で1時間撹拌することで完全に溶解させた。ビーカーに硝酸銀(和光純薬工業(株)製)3g、プロピレングリコール40gを入れ室温で撹拌することで完全に溶解させた。塩化テトラブチルアンモニウム(ACROS社製)の1質量%プロピレングリコール溶液7.38g(0.27mmol)をフラスコに添加した後、滴下漏斗へ先に作製した硝酸銀溶液を投入した。滴下漏斗上部より窒素ガスを300mL/minの流量で20分間流して系を窒素ガス置換した。枝管の窒素ガスを止め、内温が130℃となるまで昇温した。内温130℃にて30分間かけて滴下漏斗の内容物を滴下し、さらに130℃で60分反応を継続した。
PNVAとしてGE191−104(Mw:300000)を用いた以外は実施例2と同様の条件により銀ナノワイヤーの製造工程を実施した。生成物の形状を表1に示す。
PNVAとしてGE191−405P(Mw:80000)を用いた以外は実施例2と同条件にて銀ナノワイヤーの製造工程を実施した。生成物の形状を表1に示す。
1L四つ口フラスコ(メカニカルスターラー、滴下漏斗、還流管、温度計)にプロピレングリコール200g、ポリビニルピロリドン K−90(以下PVP K−90と省略する和光純薬工業(株)製)10.7g(96mmol)を仕込み、60℃で1時間撹拌することで完全に溶解させた。ビーカーに硝酸銀(和光純薬工業(株)製)3g、プロピレングリコール80gを入れ室温で撹拌することで完全に溶解させた。塩化テトラブチルアンモニウム(ACROS社製)の1質量%プロピレングリコール溶液7.38g(0.27mmol)をフラスコに添加した後、滴下漏斗へ先に作製した硝酸銀溶液を投入した。滴下漏斗上部より窒素ガスを300mL/minの流量で20分間流して系を窒素ガス置換した。枝管の窒素ガスを止め、内温が160℃となるまで昇温した。内温160℃にて30分間かけて滴下漏斗の内容物を滴下し、さらに160℃で60分反応を継続した。
Claims (7)
- R−CONHR’(Rは水素原子または炭素原子数が1〜3のアルキル基、R’は炭素−炭素二重結合を有する炭素原子数が2または3のアルケニル基)で表される第二級アミド化合物をモノマー単位に含む重量平均分子量が100000〜280000の重合体および還元剤の存在下で、銀化合物を加熱する工程を含む銀ナノワイヤーの製造方法であって、
前記重合体が、ポリ(N−ビニルホルムアミド)、ポリ(N−ビニルアセトアミド)またはポリ(N−ビニルプロピオンアミド)から選ばれる1種以上の重合体、または前記第二級アミド化合物をモノマー単位に含むコポリマーであって、前記コポリマー中の第二級アミドモノマー単位が20〜95mol%の範囲である重合体であり、
ポリオールを前記還元剤および/または溶媒として含み、前記ポリオールが、炭素原子数2〜6であり、2〜6価のアルコール化合物である、銀ナノワイヤーの製造方法。 - 前記ポリオールが、2価アルコールである、請求項1に記載の銀ナノワイヤーの製造方法。
- 前記2価アルコールが、エチレングリコール、プロピレングリコールの少なくとも一方である、請求項2に記載の銀ナノワイヤーの製造方法。
- 前記銀化合物が、硝酸銀、ヘキサフルオロホスフェート銀、硼弗化銀、過塩素酸銀、塩素酸銀、塩化銀、臭化銀、フッ化銀、炭酸銀、硫酸銀、酢酸銀、トリフルオロ酢酸銀のいずれかである請求項1〜3のいずれか一項に記載の銀ナノワイヤーの製造方法。
- 前記銀化合物100質量部に対して前記ポリオールを10000〜100000質量部用いる、請求項1〜4のいずれか一項に記載の銀ナノワイヤーの製造方法。
- 4級アンモニウム塩をさらに加える、請求項1〜5のいずれか一項に記載の銀ナノワイヤーの製造方法。
- 請求項1〜6のいずれか一項に記載の銀ナノワイヤーの製造方法で得られた銀ナノワイヤーの表面に付着した前記重合体を除去する工程をさらに含む銀ナノワイヤーの製造方法。
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