Electrochemical control of the molecular encapsulation behavior and charge transfer reaction of the dendrimer at the liquid/liquid interface

• Project/Area Number: 21750078
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Analytical chemistry
• Research Institution: Nagasaki University
• Principal Investigator: NAGATANI Hirohisa Nagasaki University, 工学部, 助教 (90346297)
• Project Period (FY): 2009 – 2010
• Project Status: Completed (Fiscal Year 2010)
• Budget Amount: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000); Fiscal Year 2010: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2009: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
• Keywords: 液液界面 / デンドリマー / アニリノナフタレンスルホン酸 / ポルフィリン / 包接 / イオン移動 / 吸着 / 分子カプセル / ドラッグデリバリー / 電位変調分光法

Research Abstract

Molecular encapsulation of anionic fluorescent dye molecules in the dendrimer was investigated at the polarized liquid/liquid interface. The anionic species was electrostatically incorporated in the dendrimer depending on the pH conditions. The spectroelectrochemical analysis demonstrated that the interfacial mechanism of the dendrimer associated with anions involves transfer and adsorption processes. In addition, a heterogeneous photoinduced electron transfer between anionic zinc porphyrin and hydrophobic quenchers at the interface was examined in the presence of the dendrimer. The photocurrent response was significantly increased by the addition of the dendrimer.

Research Products

• [Journal Article] Encapsulation of Anilinonaphthalene sulfonates in Carboxylate-Terminated PAMAM Dendrimer at the Polarized Water| 1,2-Dichloroethane Interface (2010)
  • Author(s): H.Nagatani, T.Sakamoto, T.Torikai, T.Sagara
  • Journal Title: Langmuir 26(22) Pages: 17686-17694
  • Peer Reviewed
• [Journal Article] Encapsulation of Anilinonaphthalenesulfonates in Carboxylate-Terminated PAMAM Dendrimer at the Polarized Water 1,2-Dichloroethane Interface (2010)
  • Author(s): H.Nagatani, T.Sakamoto, T.Torikai, T.Sagara
  • Journal Title: Langmuir Volume: 26(22) Pages: 17686-17694
  • Peer Reviewed
• [Journal Article] Potential- modulated fluorescence spectroscopy of the membrane potential-sensitive dye di-4- ANEPPS at the 1,2-dichloroethane/water interface (2009)
  • Author(s): T.Osakai, J.Sawada, H.Nagatani
  • Journal Title: Anal.Bioanal.Chem. 395(4) Pages: 1055-1061
  • Peer Reviewed
• [Journal Article] Potential-modulated fluorescence spectroscopy of the membranc potential-sensitive dye di-4-ANEPPS at the 1,2-dichloroethane/water interface (2009)
  • Author(s): T.Osakai ; J.Sawada ; H.Nagatani
  • Journal Title: Analytical and Bioanalytical Chemistry 395(4) Pages: 1055-1064
  • Peer Reviewed
• [Presentation] Ion Transfer and Adsorption of Water-Soluble Porphyrins Associated with Surfactants at the Water 1,2-Dichloroethane Interface (2011)
  • Author(s): M.Asada, H.Nagatani, T.Sagara
  • Organizer: Japan-Taiwan 4 Universities Joint Symposium on Material Science for Next Generation Energy and Nano Science
  • Place of Presentation: 長崎
  • Year and Date: 2011-01-20
• [Presentation] 界面活性剤共存下における水溶性生ポルフィリンの液液界面反応挙動 (2010)
  • Author(s): 浅田真希、永谷広久、相樂隆正
  • Organizer: 日本分析化学会第59年会
  • Place of Presentation: 仙台
  • Year and Date: 2010-09-15
• [Presentation] アニオン性ポルフィリンとイオン対形成したデンドリマーの液液界面における光反応挙動 (2010)
  • Author(s): 鳥飼大志, 永谷広久, 相樂隆正
  • Organizer: 第47回化学関連支部合同九州大会
  • Place of Presentation: 北九州
  • Year and Date: 2010-07-10
• [Presentation] Spectroelectrochemical analysis of porphyrins at the liquid/liquid interface (2010)
  • Author(s): Hirohisa Nagatani
  • Organizer: Sixth International Conference on Porphyrins and Phthalocyanines (ICPP-6)
  • Place of Presentation: New Mexico, USA
  • Year and Date: 2010-07-09
• [Presentation] Molecular Encapsulation and Ion-Transfer Behavior of Carboxy-Terminated PAMAM Dendrimer at the Liquid/Liquid Interface (2010)
  • Author(s): T.Sakamoto, H.Nagatani, T, Sagara
  • Organizer: Nagasaki Symposium on Nano-Dynamics 2010
  • Place of Presentation: 長崎
  • Year and Date: 2010-01-21
• [Presentation] Molecular Encapsulation and Ino-Transfer Behavior of Carboxy-Terminated PAMAM Dendrimer at the Liquid/Liquid Interface (2010)
  • Author(s): T.Sakamoto ; H.Nagatani ; T.Sagara
  • Organizer: Nagasaki Symposium on Nano-Dynamics 2010
  • Place of Presentation: 長崎
  • Year and Date: 2010-01-21
• [Presentation] 界面活性剤存在下の液液界面における水溶性ポルフィリンのイオン移動・吸着反応機構 (2009)
  • Author(s): 浅田真希;永谷広久;相樂隆正
  • Organizer: 第55回ポーラログラフィーおよび電気分析化学討論会
  • Place of Presentation: 徳島
  • Year and Date: 2009-11-22
• [Presentation] 液液界面におけるカルボキシ末端ポリアミドアミンデンドリマーのアニリノナフタレン誘導体に対する包接挙動 (2009)
  • Author(s): 坂本功, 永谷広久, 相樂隆正
  • Organizer: 日本分析化学会第58年会
  • Place of Presentation: 札幌
  • Year and Date: 2009-09-24
• [Presentation] 液液界面におけるカルボキシ末端ポリアミドアミンデンリマーのアニリノナフタレン誘導体に対する包接挙動 (2009)
  • Author(s): 坂本功;永谷広久;相樂隆正
  • Organizer: 日本分析化学会第58年会
  • Place of Presentation: 札幌
  • Year and Date: 2009-09-24
• [Presentation] 液液界面におけるポルフィリン化合物の吸着反応挙動 (2009)
  • Author(s): 永谷広久
  • Organizer: 第27回九州コロイドコロキウム
  • Place of Presentation: 福岡
  • Year and Date: 2009-08-28
• [Presentation] ポリアミドアミンデンリマーのアニリノナフタレン誘導体に対する包接機能と液液界面における反応挙動 (2009)
  • Author(s): 坂本功;永谷広久;相樂隆正
  • Organizer: 第46回化学関連支部合同九州大会
  • Place of Presentation: 北九州
  • Year and Date: 2009-07-11
• [Presentation] 界面活性剤存在下の液液界面におけるアニオン性ポルフィリンのイオン移動・吸着反応機構 (2009)
  • Author(s): 浅田真希;永谷広久;相樂隆正
  • Organizer: 第46回化学関連支部合同九州大会
  • Place of Presentation: 北九州
  • Year and Date: 2009-07-11
• [Remarks] ホームページ等
  • URL: http://www.ch.nagasaki-u.ac.jp/mol/
• [Remarks]
  • URL: http://www.ch.nagasaki-u.ac.jp/mol/