A Highly Efficient Sensor Platform Using Simply Manufactured Nanodot Patterned Substrates.
Block copolymer (BCP) self-assembly is a low-cost means to nanopattern surfaces. Here, we use these nanopatterns to directly print arrays of nanodots onto a conducting substrate (Indium Tin Oxide (ITO) coated glass) for application as an electrochemical sensor for ethanol (EtOH) and hydrogen peroxide (H2O2) detection. The work demonstrates that BCP systems can be used as a highly efficient, flexible methodology for creating functional surfaces of materials. Highly dense iron oxide nanodots arrays that mimicked the original BCP pattern were prepared by an 'insitu' BCP inclusion methodology using poly(styrene)-block-poly(ethylene oxide) (PS-b-PEO). The electrochemical behaviour of these densely packed arrays of iron oxide nanodots fabricated by two different molecular weight PS-b-PEO systems was studied. The dual detection of EtOH and H2O2 was clearly observed. The as-prepared nanodots have good long term thermal and chemical stability at the substrate and demonstrate promising electrocatalytic performance.
Materials Research Group, Department of Chemistry and Tyndall National Institute, University College Cork, Cork, Ireland.|Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Trinity College Dublin, Dublin, Ireland.
Sozaraj
S
Rasappa
Materials Research Group, Department of Chemistry and Tyndall National Institute, University College Cork, Cork, Ireland.|Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Trinity College Dublin, Dublin, Ireland.
Tandra
T
Ghoshal
Materials Research Group, Department of Chemistry and Tyndall National Institute, University College Cork, Cork, Ireland.|Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Trinity College Dublin, Dublin, Ireland.
Dipu
D
Borah
Materials Research Group, Department of Chemistry and Tyndall National Institute, University College Cork, Cork, Ireland.|Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Trinity College Dublin, Dublin, Ireland.
Ramsankar
R
Senthamaraikannan
Materials Research Group, Department of Chemistry and Tyndall National Institute, University College Cork, Cork, Ireland.|Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Trinity College Dublin, Dublin, Ireland.
Justin D
JD
Holmes
Materials Research Group, Department of Chemistry and Tyndall National Institute, University College Cork, Cork, Ireland.|Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Trinity College Dublin, Dublin, Ireland.|AMBER (Advanced Material and Bio-Engineering Research Centre), Trinity College Dublin, Dublin-2, Ireland.
Michael A
MA
Morris