Electrochemical aptasensor for dehp detection containing gold nanoflowers
AssigneeIndustry-Academic Cooperation Foundation, Yonsei University
InventorsHyo-il JUNG, Kyungyeon LEE
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Abstract
Provided is an electrochemical aptasensor for detecting di(2-ethylhexyl)phthalate (DEHP) with high sensitivity. The electrochemical aptasensor according to the present invention has a low detection limit concentration by improving sensitivity by sensor surface modification using a nano composite and gold nanoflowers, and has high practical applicability of a sensor by monitoring a trace amount of DEHP migrating from a real plastic product by a simple measurement method.
Claims15
An electrochemical aptasensor comprising:
- a working electrode which is surface-modified with a graphene nanoplatelet composite including:
- graphene nanoplatelets, a transition metal chalcogen compound, and an amine-based polymer;
- gold nanoflowers bound to an upper end of the working electrode;
- and
- an aptamer which is capable of binding to a target material and is immobilized on the gold nanoflowers.
A method of producing an electrochemical aptasensor, the method comprising:
- (a) depositing a graphene nanoplatelet composite including:
- graphene nanoplatelets, a transition metal chalcogen compound, and an amine-based polymer on a working electrode;
- (b) electrodepositing a gold precursor on the working electrode to produce gold nanoflowers;
- and
- (c) immobilizing an aptamer capable of binding to a target material on the gold nanoflowers.
Dependencies are inferred from the claim text.