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    • 2. 发明申请
    • METHOD FOR SPECIFICALLY DETECTING TEST SUBSTANCE USING PHOTOCURRENT, SENSOR UNIT USED THEREFOR, AND MEASURING DEVICE
    • 使用光电特定检测测试物质的方法,其使用的传感器单元和测量装置
    • US20110220517A1
    • 2011-09-15
    • US12811956
    • 2009-01-09
    • Makoto BekkiMasako AjimiHitoshi OharaShuji SonezakiYoshimasa Yamana
    • Makoto BekkiMasako AjimiHitoshi OharaShuji SonezakiYoshimasa Yamana
    • G01N27/49G01N27/413
    • G01N27/305G01N27/3276G01N33/5438
    • This invention provides a method for detecting an analyte, which, in specific detection of an analyte using photocurrent that is generated by photoexcitation of a sensitizing dye, can significantly simplify the structure and a detection procedure of a sensor unit and a device using the sensor unit and can realize detection with high accuracy, and also provides a sensor unit and a device using the sensor unit. According to the method, an analyte-containing sample solution and a sensitizing dye are brought into contact with the surface of a working electrode to immobilize the sensitizing dye onto the working electrode through specific binding. Subsequently, an electrolyte is supplied in situ while allowing the sample solution to be held without being removed to bring the working electrode and a counter electrode into contact with the electrolyte. The working electrode is irradiated with light to photoexcite the sensitizing dye and thus to detect photocurrent that flows across the working electrode and the counter electrode.
    • 本发明提供了一种用于检测分析物的方法,其特征在于使用通过光敏染料的光激发产生的光电流来特异性检测分析物,可以显着简化传感器单元和使用传感器单元的装置的结构和检测程序 并且可以高精度地实现检测,并且还提供使用传感器单元的传感器单元和设备。 根据该方法,使含分析物的样品溶液和敏化染料与工作电极的表面接触,通过特异性结合将致敏染料固定在工作电极上。 随后,在原位提供电解质,同时允许样品溶液被保持而不被除去以使工作电极和对电极与电解质接触。 用光照射工作电极,使感光染料发光,从而检测流过工作电极和对电极的光电流。
    • 4. 发明授权
    • Method for specifically detecting analyte using photocurrent, and electrode, measuring cell and measuring device for use therein
    • 使用光电流专门检测分析物的方法,以及用于其中的电极,测量元件和测量装置
    • US08092670B2
    • 2012-01-10
    • US11992858
    • 2006-09-28
    • Makoto BekkiHitoshi OharaShuji SonezakiKoki KanehiraYumi OgamiHiroshi IshikawaYumi OsakiHiromasa TokudomeYoko YamadaMasahiro Miyauchi
    • Makoto BekkiHitoshi OharaShuji SonezakiKoki KanehiraYumi OgamiHiroshi IshikawaYumi OsakiHiromasa TokudomeYoko YamadaMasahiro Miyauchi
    • G01N27/26G01N33/48G01N33/487G01N33/49G01N33/493G01N33/50G01N33/53G01N33/533
    • G01N33/5438
    • A method, an electrode, a measuring cell, and a measuring device are disclosed which can detect and quantitatively determine an analyte having specific bonding properties, in a highly sensitive, simple and accurate manner using photocurrent. This method comprises contacting a working electrode and a counter electrode with an electrolyte medium, wherein the working electrode has an analyte immobilized thereon through a probe substance and wherein the analyte is bonded to a sensitizing dye; irradiating the working electrode with light to photoexcite the sensitizing dye; and detecting photocurrent flowing between the working electrode and the counter electrode, wherein the photocurrent is generated by transfer of electrons from the photoexcited sensitizing dye to the working electrode. The working electrode comprises an electron accepting layer comprising an electron accepting substance capable of accepting electrons released from the sensitizing dye in response to photoexcitation, wherein the probe substance is supported on a surface of the electron accepting layer. The electron accepting substance is an oxide semiconductor having an energy level lower than that of a lowest unoccupied molecular orbit (LUMO) of the sensitizing dye. The electrolyte medium comprises an electrolyte and at least one solvent selected from an aprotic solvent and a protic solvent, wherein the electrolyte comprises a salt capable of providing an oxidized sensitizing dye with electrons.
    • 公开了一种方法,电极,测量单元和测量装置,其可以使用光电流以高灵敏度,简单和准确的方式检测和定量地确定具有特定粘合特性的分析物。 该方法包括使工作电极和对电极与电解质介质接触,其中工作电极通过探针物质固定在其上的分析物,并且其中分析物与致敏染料结合; 用光照射工作电极对光敏染料进行光刺激; 并且检测在工作电极和对电极之间流动的光电流,其中通过将电子从光激发敏化染料转移到工作电极而产生光电流。 工作电极包括电子接受层,其包含能够响应于光激发而接受从感光染料释放的电子的电子接受物质,其中探针物质被负载在电子接受层的表面上。 电子接受物质是具有比敏化染料的最低未占据分子轨道(LUMO)的能级更低的氧化物半导体。 电解质介质包括电解质和至少一种选自非质子溶剂和质子溶剂的溶剂,其中电解质包含能够提供氧化的致敏染料与电子的盐。
    • 5. 发明申请
    • Method for Specifically Detecting Analyte Using Photocurrent, and Electrode, Measuring Cell and Measuring Device for Use Therein
    • 使用光电流特异性检测分析物的方法,电极,测量单元及其使用的测量装置
    • US20090294305A1
    • 2009-12-03
    • US11992858
    • 2006-09-28
    • Makoto BekkiHitoshi OharaShuji SonezakiKoki KanehiraYumi OgamiHiroshi IshikawaYumi OsakiHiromasa TokudomeYoko YamadaMasahiro Miyauchi
    • Makoto BekkiHitoshi OharaShuji SonezakiKoki KanehiraYumi OgamiHiroshi IshikawaYumi OsakiHiromasa TokudomeYoko YamadaMasahiro Miyauchi
    • G01N27/26G01F1/64
    • G01N33/5438
    • A method, an electrode, a measuring cell, and a measuring device are disclosed which can detect and quantitatively determine an analyte having specific bonding properties, in a highly sensitive, simple and accurate manner using photocurrent. This method comprises contacting a working electrode and a counter electrode with an electrolyte medium, wherein the working electrode has an analyte immobilized thereon through a probe substance and wherein the analyte is bonded to a sensitizing dye; irradiating the working electrode with light to photoexcite the sensitizing dye; and detecting photocurrent flowing between the working electrode and the counter electrode, wherein the photocurrent is generated by transfer of electrons from the photoexcited sensitizing dye to the working electrode. The working electrode comprises an electron accepting layer comprising an electron accepting substance capable of accepting electrons released from the sensitizing dye in response to photoexcitation, wherein the probe substance is supported on a surface of the electron accepting layer. The electron accepting substance is an oxide semiconductor having an energy level lower than that of a lowest unoccupied molecular orbit (LUMO) of the sensitizing dye. The electrolyte medium comprises an electrolyte and at least one solvent selected from an aprotic solvent and a protic solvent, wherein the electrolyte comprises a salt capable of providing an oxidized sensitizing dye with electrons.
    • 公开了一种方法,电极,测量单元和测量装置,其可以使用光电流以高灵敏度,简单和准确的方式检测和定量地确定具有特定粘合特性的分析物。 该方法包括使工作电极和对电极与电解质介质接触,其中工作电极通过探针物质固定在其上的分析物,并且其中分析物与致敏染料结合; 用光照射工作电极对光敏染料进行光刺激; 并且检测在工作电极和对电极之间流动的光电流,其中通过将电子从光激发敏化染料转移到工作电极而产生光电流。 工作电极包括电子接受层,其包含能够响应于光激发而从感光染料中释放的电子的受电子物质,其中探针物质被负载在电子接受层的表面上。 电子接受物质是具有比敏化染料的最低未占据分子轨道(LUMO)的能级更低的氧化物半导体。 电解质介质包括电解质和至少一种选自非质子溶剂和质子溶剂的溶剂,其中电解质包含能够提供氧化的致敏染料与电子的盐。
    • 7. 发明申请
    • MEASUREMENT DEVICE USED FOR SPECIFICALLY DETECTING SUBSTANCE TO BE EXAMINED USING PHOTOCURRENT, SENSOR UNIT USED FOR SAME, AND METHOD FOR SPECIFICALLY DETECTING SUBSTANCE TO BE EXAMINED USING PHOTOCURRENT
    • 用于特异性检测使用光电流检测的物质的测量装置,用于相同的传感器单元以及使用光电检测物质进行特定检测的方法
    • US20120100627A1
    • 2012-04-26
    • US13256713
    • 2010-03-18
    • Makoto BekkiShuji Sonezaki
    • Makoto BekkiShuji Sonezaki
    • G01N27/00G01N30/96
    • G01N27/305
    • In utilizing photocurrent generated in the photoexcitation of a dye in specific detection of an analyte, highly accurate detection can be realized by discharging charged current generated in the formation of a sensor unit and, in the detection of photocurrent of a plurality of detection spots provided on a working electrode, discharging photocurrent which is derived from a detection spot subjected to the latest photocurrent measurement and becomes noise current. The present invention provides a measuring apparatus comprising a sensor unit comprising a working electrode, a counter electrode, and an electrolyte-containing substance, a single or plurality of light sources that apply light to the working electrode, an XY moving device provided when the light source is moved relatively in an XY direction relative to the working electrode, an ammeter that measures current which flows across the working electrode and the counter electrode, and a discharge device that discharges charged current and photocurrent derived from a detection spot subjected to the latest photocurrent measurement. The specific detection method using the measuring apparatus is carried out by controlling the timing of light irradiation and the timing of connection to the ammeter and the discharge device.
    • 利用在特定检测分析物中对染料的光激发产生的光电流,可以通过放电在传感器单元的形成中产生的充电电流来放电,并且在检测到多个检测点的光电流时,能够实现高精度的检测 工作电极,从经受最新光电流测量的检测点导出的放电光电流成为噪声电流。 本发明提供了一种测量装置,包括:传感器单元,包括工作电极,对电极和含电解质的物质;对工作电极施加光的单个或多个光源;当所述光 源相对于工作电极相对于XY方向移动,测量流过工作电极和对电极的电流的电流表;以及放电装置,其对充电电流进行放电,并从经受最新光电流的检测点导出光电流 测量。 通过控制光照射的定时和与电流表和放电装置的连接的定时来进行使用测定装置的具体的检测方法。
    • 8. 发明授权
    • Measurement device used for specifically detecting substance to be examined using photocurrent, sensor unit used for same, and method for specifically detecting substance to be examined using photocurrent
    • 用于使用光电流特异性检测待检测物质的测量装置,用于其的传感器单元以及使用光电流专门检测待检测物质的方法
    • US08501492B2
    • 2013-08-06
    • US13256713
    • 2010-03-18
    • Makoto BekkiShuji Sonezaki
    • Makoto BekkiShuji Sonezaki
    • G01N27/00G01N30/96G01N30/00
    • G01N27/305
    • In utilizing photocurrent generated in the photoexcitation of a dye in specific detection of an analyte, highly accurate detection can be realized by discharging charged current generated in the formation of a sensor unit and, in the detection of photocurrent of a plurality of detection spots provided on a working electrode, discharging photocurrent which is derived from a detection spot subjected to the latest photocurrent measurement and becomes noise current. The present invention provides a measuring apparatus comprising a sensor unit comprising a working electrode, a counter electrode, and an electrolyte-containing substance, a single or plurality of light sources that apply light to the working electrode, an XY moving device provided when the light source is moved relatively in an XY direction relative to the working electrode, an ammeter that measures current which flows across the working electrode and the counter electrode, and a discharge device that discharges charged current and photocurrent derived from a detection spot subjected to the latest photocurrent measurement. The specific detection method using the measuring apparatus is carried out by controlling the timing of light irradiation and the timing of connection to the ammeter and the discharge device.
    • 利用在特定检测分析物中对染料的光激发产生的光电流,可以通过放电在传感器单元的形成中产生的充电电流来放电,并且在检测到多个检测点的光电流的检测中可以实现高精度的检测 工作电极,从经受最新光电流测量的检测点导出的放电光电流成为噪声电流。 本发明提供了一种测量装置,包括:传感器单元,包括工作电极,对电极和含电解质的物质;对工作电极施加光的单个或多个光源;当所述光 源相对于工作电极相对于XY方向移动,测量流过工作电极和对电极的电流的电流表;以及放电装置,其对充电电流进行放电,并从经受最新光电流的检测点导出光电流 测量。 通过控制光照射的定时和与电流表和放电装置的连接的定时来进行使用测定装置的具体的检测方法。