Title: Electroanalytical applications of screen-printable surfactant-induced sol-gel graphite composites

Abstract

A process for preparing sol-gel graphite composite electrodes is presented. This process preferably uses the surfactant bis(2-ethylhexyl) sulfosuccinate (AOT) and eliminates the need for a cosolvent, an acidic catalyst, a cellulose binder and a thermal curing step from prior art processes. Fabrication of screen-printed electrodes by this process provides a simple approach for electroanalytical applications in aqueous and nonaqueous solvents. Examples of applications for such composite electrodes produced from this process include biochemical sensors such as disposable, single-use glucose sensors and ligand modified composite sensors for metal ion sensitive sensors.

Inventors:

Guadalupe, Ana R ^[1]; Guo, Yizhu ^[1]

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1. San Juan, PR

Issue Date:

Mon Jan 01 00:00:00 EST 2001

OSTI Identifier:

873732

Patent Number(s):

6231920

Application Number:

09/181,875

Assignee:

University of Puerto Rico (San Juan, PR)

Patent Classifications (CPCs):

C - CHEMISTRY C12 - BIOCHEMISTRY C12Q - MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS

G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES

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C - CHEMISTRY C12 - BIOCHEMISTRY C12Q - MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS

C12Q1/001 - {Enzyme electrodes}

G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES

G01N27/308 - {at least partially made of carbon}
G01N27/3271 - {Amperometric enzyme electrodes for analytes in body fluids, e.g. glucose in blood

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Resource Type:

Patent

Country of Publication:

United States

Language:

English

Subject:

electroanalytical; applications; screen-printable; surfactant-induced; sol-gel; graphite; composites; process; preparing; composite; electrodes; preferably; surfactant; bis; 2-ethylhexyl; sulfosuccinate; aot; eliminates; cosolvent; acidic; catalyst; cellulose; binder; thermal; curing; step; prior; processes; fabrication; screen-printed; provides; simple; approach; aqueous; nonaqueous; solvents; examples; produced; biochemical; sensors; disposable; single-use; glucose; ligand; modified; metal; sensitive; aqueous solvent; chemical sensors; composite electrode; process provides; chemical sensor; composite electrodes; sol-gel graphite; graphite composites; sensitive sensor; analytical applications; process preferably; /427/