Electrocatalytic tuning of biosensing response through electrostatic or hydrophobic enzyme-graphene oxide interactions.
作者： Luis Baptista-Pires , Briza Pérez-López , Carmen C. Mayorga-Martinez , Eden Morales-Narváez , Neus Domingo
DOI: 10.1016/J.BIOS.2014.05.028
关键词:
摘要: Abstract The effect of graphene oxidative grades upon the conductivity and hydrophobicity consequently influence on an enzymatic biosensing response is presented. electrochemical responses reduced oxide (rGO) have been compared with obtained from form (oGO) their performances accordingly discussed various evidences by optical techniques. We used tyrosinase enzyme as a proof concept receptor interest for phenolic compounds detection through its direct adsorption onto screen-printed carbon electrode previously modified oGO or rGO carbon–oxygen ratio 1.07 1.53 respectively. Different levels directly affect (bio)conjugation properties biosensor due to changes at enzyme/graphene interface coming electrostatic hydrophobic interactions biomolecules. developed was capable reaching limit 0.01 nM catechol. This tuning capability can be building several other biosensors, including immunosensors DNA sensors applications.
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