PMID- 28742363 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20180723 LR - 20180723 IS - 1520-5827 (Electronic) IS - 0743-7463 (Linking) VI - 33 IP - 31 DP - 2017 Aug 8 TI - Improved Performance of Glucose Bioanodes Using Composites of (7,6) Single-Walled Carbon Nanotubes and a Ferrocene-LPEI Redox Polymer. PG - 7591-7599 LID - 10.1021/acs.langmuir.7b00718 [doi] AB - The effect of incorporating different types of carbon nanotubes into composite films of a redox polymer (FcMe(2)-C(3)-LPEI) and glucose oxidase (GOX) was investigated. The composite films were constructed by first forming a high-surface area network film of either single-walled carbon nanotubes (SWNTs) or multiwalled carbon nanotubes (MWNTs) on a glassy carbon electrode (GCE) by solution casting of a suspension of Triton-X-100 dispersed SWNTs. Next a glucose responsive redox hydrogel was formed on top of the nanotube-modified electrode by cross-linking FcMe(2)-C(3)-LPEI with glucose oxidase via ethylene glycol diglycidyl ether (EGDGE). Electrochemical and enzymatic measurements showed that composite films made with (7,6) SWNTs produced a higher response (3.3 mA/cm(2)) to glucose than films made with (6,5) SWNTs (1.8 mA/cm(2)) or MWNTs (1.2 mA/cm(2)) or films made without SWNTs (0.7 mA/cm(2)). We also show that the response of the composite films could be systematically varied by fabricating SWNT films with different weight ratios of (7,6) and (6,5) SWNTs. Optimization of the (7,6) SWNTs loading and the redox polymer-enzyme film produced a glucose response of 11.2 mA/cm(2). Combining the optimized glucose films with a platinum oxygen breathing cathode into a biofuel cell produced a maximum power density output of 343 muW/cm(2). FAU - Chen, Jie AU - Chen J AD - Department of Bioengineering, University of Texas at Dallas , 800 W. Campbell Rd., Richardson, Texas 75083, United States. FAU - Munje, Rujuta AU - Munje R AD - Department of Bioengineering, University of Texas at Dallas , 800 W. Campbell Rd., Richardson, Texas 75083, United States. FAU - Godman, Nicholas P AU - Godman NP FAU - Prasad, Shalini AU - Prasad S AD - Department of Bioengineering, University of Texas at Dallas , 800 W. Campbell Rd., Richardson, Texas 75083, United States. FAU - Glatzhofer, Daniel T AU - Glatzhofer DT FAU - Schmidtke, David W AU - Schmidtke DW AUID- ORCID: 0000-0001-6404-318X LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, Non-P.H.S. DEP - 20170725 PL - United States TA - Langmuir JT - Langmuir : the ACS journal of surfaces and colloids JID - 9882736 EDAT- 2017/07/26 06:00 MHDA- 2017/07/26 06:01 CRDT- 2017/07/26 06:00 PHST- 2017/07/26 06:00 [pubmed] PHST- 2017/07/26 06:01 [medline] PHST- 2017/07/26 06:00 [entrez] AID - 10.1021/acs.langmuir.7b00718 [doi] PST - ppublish SO - Langmuir. 2017 Aug 8;33(31):7591-7599. doi: 10.1021/acs.langmuir.7b00718. Epub 2017 Jul 25.