Langmuir-Blodgett(LB)
ἲ䜢⏝䛔䛶䚸Ỉ⁐ᾮ୰䛷㟼㟁┦స⏝䛻䜘䜚㔠ᒓ䝘䝜⢏Ꮚ䜢྾╔䛩䜛ᶵ⬟ᅋ䜢ᑟධ
䛧䛯㧗ศᏊ䝘䝜䝅䞊䝖䜢
ITOᇶᯈୖ䛻⣼✚䛧䚸ᾐₕἲ䛻䜘䜚䝘䝜⢏Ꮚ䜢྾╔䛥䛫䜛䛣䛸䛷䚸ᇶᯈୖ䛻䝘䝜䝇䜿䞊
䝹䛷䝪䝖䝮䜰䝑䝥ⓗ䛻㝵ᒙ䛥䜜䛯㔠䝘䝜⢏Ꮚ䠋㓟䝏䝍䞁䝘䝜⢏Ꮚ㞟✚య䜢స〇䛧䛯䚹䛣䛾㞟✚య䛻༢Ⰽග
䜢ᙜ䛶䚸ග㟁ὶ䜢 ᐃ䛧䛯䛸䛣䜝䚸⾲㠃ᒁᅾ䝥䝷䝈䝰䞁䛾྾Ἴ㛗䛷䛒䜛
560 nm䛾ග䜢ᙜ䛶䛯䛸䛝䛿㔠䝘䝜⢏
89 ◊ ✲研 究 活 動 報 告ά ື ሗ ࿌
Ꮚ䛛䜙䝏䝍䝙䜰䝘䝜⢏Ꮚ䜈㟁Ꮚ⛣ື䛜㉳䛣䜚䚸䜹䝋䞊䝗᪉ྥ䛻㟁ὶ䛜ὶ䜜䛯䚹䜎䛯䚸
340 nm䛾ග䜢↷ᑕ䛧䛯䛸䛝 䛿䜰䝜䞊䝗᪉ྥ䛻㟁ὶ䛜ὶ䜜䛯䚹䛣䜜䛻䜘䜚䚸ཌ䛥䜟䛪䛛ᩘ༑
nm䛾㉸ⷧ⭷䛷䛾⮬ᅾไᚚྍ⬟䛺ග㟁ኚᛂ⟅
䜢ᐇ⌧䛧䛯䚹ᚋ䛾ㄢ㢟䛸䛧䛶䛿ኚຠ⋡䛾ྥୖ䛜䛒䛢䜙䜜䜛䚹
ࣞࢻࢵࢡࢫᛶࣁࣈࣜࢵࢻࢸࣟ㞟✚యࡼࡿ࣐ࣝࢳ࣮࢚࢝ࣛࣞࢡࢺࣟࢡ࣑ࣟࢬ࣒
Langmuir-Blodgett(LB)
ἲ䜢⏝䛔䛶䚸ᶵ⬟ᅋ䛸䛧䛶䝹䝔䝙䜴䝮㘒య
(Ru)䜢ᑟධ䛧䛯㧗ศᏊ䝘䝜䝅䞊䝖䛸䚸䜰䝭䝜
ᇶ䜢᭷䛩䜛㧗ศᏊ䝘䝜䝅䞊䝖䜢㡰䛻✚ᒙ䛧䚸䛭䛣䛻䝥䝹䝅䜰䞁䝤䝹䞊䝘䝜⢏Ꮚ(PBNPs)䜢྾╔䛥䛫䜛䛣䛸䛷䚸
ITOᇶᯈୖ䛻Ruᒙ/PBᒙ䛸䛺䜛䜘䛖䛻䝺䝗䝑䜽䝇άᛶ䜢᭷䛩䜛䝝䜲䝤䝸䝑䝗䝦䝔䝻㞟✚య䜢స〇䛧䛯䚹䛣䛾䝝䜲䝤䝸䝑䝗䝦䝔䝻㞟✚య䛾䜶䝺䜽䝖䝻䜽䝻䝭䝑䜽≉ᛶ䜢᳨ウ䛧䛯䛸䛣䜝䚸
Ru䛸
PB䛾㓟㑏ඖ㟁䛾㐪䛔䛻䜘䜚䚸
PB㒊䛻 䛚䛔䛶㓟≧ែ䜢ಖᣢ䛩䜛䛣䛸䛜䛷䛝䜛䛣䛸䛜ศ䛛䛳䛯䚹䜎䛯䚸୍㒊䛾PB䛿㟁ᴟ䛸┤᥋㟁Ꮚᤵཷ䜢䛩䜛䛣䛸䛷 㓟≧ែ䛜ಖᣢ䛥䜜䛺䛔䚹䛣䜜䛻䜘䛳䛶ྠ୍㟁䛻䛚䛔䛶䚸ྠ୍䝕䝞䜲䝇ෆ䛷PB䛜␗䛺䜛㓟≧ែ䜢䛸䜛䛣䛸 䛸䛺䜚䚸」ᩘⰍ䛾ྠⓎⰍ䛻䜘䜛䝬䝹䝏䜹䝷䞊䜶䝺䜽䝖䝻䜽䝻䝭䝈䝮䜢♧䛧䛯䚹䜎䛯䚸ಖᣢ䛥䜜䛯㓟≧ែ䛿
Ru䛾 ගάᛶ䜢⏝䛧䛯Ru䛛䜙PB䜈䛾ගㄏ㉳㟁Ꮚ⛣ື䛻䜘䛳䛶㑏ඖ䛥䜜䜛䚹ᚑ䛳䛶䛣䛾䝦䝔䝻㞟✚య䛿䚸䝕䝞䜲䝇 ᵓ㐀䛻䜘䜚䝫䝔䞁䝅䝱䝹໙㓄䜢ไᚚ䛩䜛䛣䛸䛷䚸PB㒊䛻䛚䛡䜛」ᩘⰍ䛾ྠⓎⰍ䛻䜘䜛䝬䝹䝏䜹䝷䞊䜶䝺䜽 䝖䝻䜽䝻䝭䝈䝮䜢♧䛩䛣䛸䛜♧၀䛥䜜䛯䚹
ࣇࢵ⣲㧗ศᏊࢼࣀࢩ࣮ࢺࡼࡿ⮬ᕫᨭᣢᛶⷧ⭷ࡢస〇ࣇ࢛ࢺࣃࢱ࣮ࢽࣥࢢ
㏆ᖺ䚸ᶵ⬟ᛶ⮬ᕫᨭᣢᛶⷧ⭷䛾◊✲䛜┒䜣䛻⾜䜟䜜䛶䛔䜛䚹ᮏ◊✲䛷䛿䚸ഃ㙐䛻䝣䝑Ⅳ⣲㙐䜢ᣢ䛴䜰䜽 䝸䝹䜰䝭䝗⣔୧ぶ፹ᛶ㧗ศᏊᮦᩱ䜢ྜᡂ䛧䚸䜰䜽䝸䝹䜰䝭䝗⣔㧗ศᏊ㙐㛫䛾Ỉ⣲⤖┦స⏝䜢⏝䛧䛶䚸䝣䝑
⣲⣔㧗ศᏊ䝘䝜䝅䞊䝖䛻䜘䜛⮬ᕫᨭᣢᛶⷧ⭷䛾స〇䜢ヨ䜏䛯䚹≛≅ᒙ䜢⏝䛧䛯⮬ᕫᨭᣢᛶⷧ⭷స〇ἲ䛻䜘 䜚䚸䝣䝑⣲⣔㧗ศᏊ䝘䝜䝅䞊䝖䛾⮬ᕫᨭᣢᛶⷧ⭷䛾ྲྀ䜚ฟ䛧䛻ᡂຌ䛧䛯䛜䚸㛫䛸䛸䜒䛻䚸ᾮ㠃䛷ⷧ⭷䛾᩿∦
䛜㉳䛣䜚䚸䝣䝑Ⅳ⣲㙐㛫䛾┦స⏝䛜ᙅ䛔䛣䛸䛜♧၀䛥䜜䚸䛥䜙䛺䜛⭷ᙉᗘ䛾ྥୖ䛜ᚋ䛾ㄢ㢟䛷䛒䜛䚹䜛䚹 䜎䛯䚸ᐊ Ẽ୰䛷䛾⣸እග↷ᑕ䛻䜘䜚䚸䝣䝑⣲⣔㧗ศᏊ䝘䝜䝅䞊䝖䛾ᚤ⣽ᥥ⏬䜢⾜䛳䛯䚹䝣䜷䝖䝬䝇䜽䜢䛸䛚 䛧䛯⣸እග↷ᑕ䛻䜘䜚䝣䝑⣲⣔㧗ศᏊ䝘䝜䝅䞊䝖䛜䜶䝑䝏䞁䜾䛥䜜䚸ᚤ⣽䝟䝍䞊䞁䛾స〇䛻ᡂຌ䛧䛯䚹
ᶵ⬟ᛶ6L2
㉸ⷧ⭷ࡢస〇
䝅䝹䝉䝇䜻䜸䜻䝃䞁䜢᭷䛩䜛㧗ศᏊ
p(DDA/SQ)䜢
LBἲ䛻䜘䜚ᇶᯈୖ䛻㌿䛧䛶㧗ศᏊ䝘䝜䝅䞊䝖䜢స〇䛧䚸
⣸እග䜢↷ᑕ䛩䜛䛣䛸䛻䜘䛳䛶ග㓟SiO
2㉸ⷧ⭷䛜ᚓ䜙䜜䜛䛣䛸䜢ぢ䛔䛰䛧䛶䛔䜛䚹SQᑟධ⋡22 mol%䛾
p(DDA/SQ)䜢⏝䛔䚸1ᒙ⣼✚䛧䛯㧗ศᏊ䝘䝜䝅䞊䝖䛻⣸እග䜢↷ᑕ䛩䜛䛣䛸䛷䚸ཌ䛥0.4 nm䛾ග㓟SiO2
㉸ⷧ
⭷䛾ᙧᡂ䜢☜ㄆ䛧䛯䚹䛣䜜䛻䜘䜚⣼✚ᒙᩘ䜢ኚ䛥䛫䜛䛣䛸䛻䜘䜚䚸䝘䝜䝯䞊䝖䝹䜸䞊䝎䞊䛷ཌ䛥䜢㧗ᗘ䛻ไᚚ 䛷䛝䜛䛣䛸䛜♧၀䛥䜜䛯䚹୍᪉䚸ከᒙ⣼✚ᚋ䛾㧗ศᏊ䝘䝜䝅䞊䝖䛻ᑐ䛧䝣䜷䝖䝬䝇䜽䜢䛧䛶⣸እග䜢↷ᑕ䛧䚸䛭 䛾ᚋ᭷ᶵ⁐፹䛻䛶⌧ീ䜢⾜䛖䛣䛸䛻䜘䜚ග㓟SiO2㉸ⷧ⭷䛾䝟䝍䞊䞁䛻ᡂຌ䛧䛯䚹䛣䜜䛻䜘䜚ぶỈᛶ䛾䝟 䝍䞊䞁䜢᭷䛩䜛⾲㠃䛾స〇䛜⾜䛘䚸⺯ගᮦᩱ䛾Ỉ⁐ᾮ䜢ሬᕸ䛩䜛䛣䛸䛻䜘䜚ぶỈ㒊䛷䛒䜛ග㓟
SiO2㉸ⷧ⭷
ᙧᡂ㒊䜈䛾㑅ᢥⓗ྾╔䛜㐩ᡂ䛷䛝䛯䚹
ࣉࣟࢺࣥఏᑟ㒊ࢆ᭷ࡍࡿ㧗ศᏊࢼࣀࢩ࣮ࢺࡢస〇
2-arylamide-2-methy lpropanesulfonate(AMPS)
䜢 䝥 䝻 䝖 䞁 ఏ ᑟ 㒊 䛸 䛧 䛶 ᭷ 䛩 䜛
poly (N-dodecylacry lamide-co-2-acry lamide-2-methy lpropane sulfonic acid sodium salt) (p (DDA/AMPS)䜢䝷䝆䜹䝹ඹ㔜ྜ䛻 䜘䜚ྜᡂ䛧䛯䚹
AMPSᑟධ⋡
38 mol%䛾
p(DDA/AMPS)䝘䝜䝅䞊䝖䜢
Langmuir-Blodgettἲ䛻䜘䜚స〇䛧䛯䛸䛣䜝䚸 つ๎ⓗ䛺ᒙᵓ㐀䜢᭷䛧䛶䛔䜛䛣䛸䜢X⥺ᅇᢡ䛻䜘䜚☜ㄆ䛧䛯䚹䜲䞁䝢䞊䝎䞁䝇䜰䝘䝷䜲䝄䞊䜢⏝䛔䛶⭷ཌ᪉ྥ䚸
⭷㠃ෆ᪉ྥ䛾䝥䝻䝖䞁ఏᑟᗘ䜢 ᐃ䛧䛯䛸䛣䜝䚸䛭䜜䛮䜜䚸10
-3Scm-1䚸10
-8Scm-1䛸ồ䜑䜙䜜䚸p(DDA/AMPS)
䝘䝜䝅䞊䝖䛜䚸ఏᑟ᪉ྥ䛻䜘䛳䛶
105䜋䛹␗䛺䜛␗᪉ᛶ䝥䝻䝖䞁ఏᑟ⭷䛸䛧䛶ᶵ⬟䛩䜛䛣䛸䛜᫂䜙䛛䛸䛺䛳䛯䚹
研 究 活 動 報 告 90
◊ ✲ ά ື ሗ ࿌
ࢻ࣮ࣃ࣑ࣥࢆྵࡴ㧗ศᏊࢼࣀࢩ࣮ࢺࡢస〇࠾ࡼࡧࡑࡢ᥋╔࣭྾╔≉ᛶࡢ᳨ウ
䝮䝷䝃䜻䜲䜺䜲䛾᥋╔䝍䞁䝟䜽㉁୰䛻ྵ䜎䜜䜛䝗䞊䝟䝭䞁䛜Ỉ⣔䛻䛚䛔䛶ᙉ䛔᥋╔ຊ䜢♧䛩䛣䛸䜔䚸ྍ㏫ⓗ
䛺᥋╔ຊ䜢♧䛩䛸䛔䛳䛯Ⅼ䛻╔┠䛧䚸䝗䞊䝟䝭䞁䜢ྵ䜐㧗ศᏊ䝘䝜䝅䞊䝖䜢స〇䛧䚸䛭䛾᥋╔䞉྾╔≉ᛶ䜢᳨
ウ䛩䜛䛣䛸䜢┠ⓗ䛸䛧䛯䚹䝗䞊䝟䝭䞁ᑟධ⋡䛜
9%䛾
p(DDA/DMA9)䝘䝜䝅䞊䝖䜢
2ᒙ⣼✚䛧䛯ᇶᯈ䜢
pH3䛾䝅䝸䜹 䝘䝜⢏Ꮚ䠄
SiO2 NPs䠅Ỉ⁐ᾮ୰䛻ᾐₕ䛧䚸
SEMീ䜢ほᐹ䛧䛯䛸䛣䜝䚸
SiO2 NPs䛜
p(DDA/DMA)䝘䝜䝅䞊䝖⾲㠃䛻 ᆒ୍䛻྾╔䛥䜜䛶䛔䜛䛣䛸䛜䜟䛛䛳䛯䚹䜎䛯䚸
pDDA䝘䝜䝅䞊䝖䛾䜏䛾ᇶᯈ䜢
SiO2 NPsỈ⁐ᾮ䛻ᾐₕ䛧䛯䛸䛣䜝䚸
SiO2 NPs
䛿䜋䛸䜣䛹྾╔䛥䜜䛺䛛䛳䛯䚹䛣䛾⤖ᯝ䜘䜚䝗䞊䝟䝭䞁䛾Ꮡᅾ䛻䜘䜚
SiO2 NPs䛜྾╔䛧䛶䛔䜛䛣䛸䛜ศ
䛛䛳䛯䚹
SiO2 NPsỈ⁐ᾮ䛾
pH䜢
2ࠥ
10䜎䛷ㄪᩚ䛧䚸䛭䜜䛮䜜䛾
pH䛷䛾
SiO2 NPs྾╔ᚋ䛾Ỉ䛾᥋ゐゅ䛾 ᐃ䜢⾜䛳䛯䚹
pH6㏆䛷䜜ᛶ䛜䛝䛟ኚ䛩䜛䛣䛸䛜ศ䛛䛳䛯䚹Ỉ䛾䜜ᛶ䛿䝘䝜⢏Ꮚ䛾྾╔ቑ䛸䛸䜒䛻
ྥୖ䛩䜛䛾䛷䚸
pH6௨ୗ䛻䛚䛔䛶
DMA䛸
SiO2 NPs䛾㛫䛾Ỉ⣲⤖ྜ┦స⏝䛜྾╔䛻㛵䛧䛶䛔䜛䛣䛸䛜♧၀ 䛥䜜䛯䚹
㻌
ὶ㟁ሙࢆ⏝࠸ࡓ㠃✚࣮࢝࣎ࣥࢼࣀࢳ࣮ࣗࣈ␗᪉ఏᑟ⭷ࡢᵓ⠏
䜹䞊䝪䞁䝘䝜䝏䝳䞊䝤
(CNT)䛿ඃ䜜䛯㟁Ẽ≉ᛶ䛰䛡䛷䛺䛟㍍㔞䚸ᰂ㌾䛸䛔䛖≉ᛶ䜢ᣢ䛴䛯䜑䝅䝸䝁䞁䝕䝞䜲 䝇䛷䛿స〇ᅔ㞴䛺᪂つ䛾䝣䝺䜻䝅䝤䝹༙ᑟయ䝕䝞䜲䝇䜈䛾ᛂ⏝䛜ᮇᚅ䛥䜜䛶䛔䜛䚹䝕䝞䜲䝇ᛂ⏝䛻䛿䚸
CNT䜢ᖖ 䞉ᖖᅽୗ䛻䛶ᇶᯈୖ䛻⢭ᐦ䛻㓄⨨䞉㓄ྥไᚚ䛧䚸⢭ᐦ䛻ᵓ㐀ไᚚ䛥䜜䛯ⷧ⭷䞉㞟✚య䜢స〇䛩䜛䛯䜑 䛾ᡭἲ䛜せồ䛥䜜䜛䚹ᮏ◊✲䛷䛿ὶ㟁ሙ䜢⏝䛔䛯
CNT䛾㓄ྥ䛸䝪䝖䝮䜰䝑䝥ⓗ䛺ᇶᯈ䛾ᘬ䛝ᥭ䛢䛻䜘䜚⏕䛨 䜛䝯䝙䝇䜹䝇䜢ྠ䛻ไᚚ䛩䜛䛣䛸䛷
CNT䛾㓄ྥⷧ⭷䜢స〇䛧䛯䚹䛣䛾ⷧ⭷䛿䝣䝺䜻䝅䝤䝹ᇶᯈ䜢ྵ䜑䛯௵ព 䛾ㄏ㟁ᛶᇶᯈୖ䛻ᵓ⠏ྍ⬟䛷䛒䜚䚸ගᏛⓗ䚸㟁Ẽⓗ䛻␗᪉ᛶ䜢♧䛧䛯䚹
2ᯛ䛾㓄ྥⷧ⭷㛫䛾ᾮᬗศᏊ䛿㓄ྥ
᪉ྥ䛻୪䜆䛣䛸䛜♧䛥䜜䛶䛔䜛䛯䜑䚸䝷䝡䞁䜾䝣䝸䞊䛺䝣䝺䜻䝅䝤䝹ᾮᬗ䝕䜱䝇䝥䝺䜲䜈䛾ᛂ⏝䛜ᮇᚅ䛥䜜䜛䚹
)LEHU2SWLF6HQVRUVIRU2[\JHQ'HWHFWLRQ%DVHGRQ/XPLQHVFHQW3RO\PHU1DQRVKHHWV Optical oxygen sensors are mainly based on the principle of luminescence quenching. The research focuses on the development of the fiber sensor with ultrathin polymer nanosheets assisted with the Langmuir-Blodgett technique. Amphiphilic copolymer containing platinum-porphyrin was synthesized by radical polymerization. A plastic optical fiber was successfully coated with the polymer nanosheets. The PtTPP content was determined by 6 mol% by using UV spectroscopy, assuming that the mole extinction coefficient of PtTPP at 402 nm is 3.08 × 105 M-1cm-1. The molecular weight of p(DDA/PtTPP) was Mn = 2.83 ×104 and Mw/Mn = 3.18. The fluorescence spectra of p(DDA/PtTPP) nanosheets were detected at room temperature. The luminescence intensity of the nanosheet significantly changes as a function of oxygen concentration at emission wavelength of 660 nm. The sample shows Stern-Volmer plot of 50-layer p(DDA/PtTPP) nanosheets. A linear relationship between 4% and 40% of [O2] was obtained, indicating that the p(DDA/PtTPP) is a good material for oxygen sensing. We also successfully prepared the sensing layers on the optical fibers and had measured the emission intensity of polymer nanosheets. The enhancement enables us to introduce either a phase-shift or time-dependent parameter to invent an accurate measurement method to detect the oxygen concentration in liquid.
91 研 究 活 動 報 告
!"#$%&' ()*+,-./012345!"67
89:'';'<9:'';'9=