Preparation and Characterization of Conductive and Photoluminescent DNA-Templated Polyindole Nanowires
Polyindole (PIn) nanowires were formed on a λ-DNA template by chemical oxidation of indole using aqueous FeCl3. The resulting nanowires are smooth, regular, conductive and had diameters in the range of 5−30 nm. These features allow them to be aligned by molecular combing and studied by scanned condu...
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| Veröffentlicht in: | ACS nano 2010-04, Vol.4 (4), p.2149-2159 |
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| creator | Hassanien, Reda Al-Hinai, Mariam Farha Al-Said, Said A Little, Ross Šiller, Lidija Wright, Nicholas G Houlton, Andrew Horrocks, Benjamin R |
| description | Polyindole (PIn) nanowires were formed on a λ-DNA template by chemical oxidation of indole using aqueous FeCl3. The resulting nanowires are smooth, regular, conductive and had diameters in the range of 5−30 nm. These features allow them to be aligned by molecular combing and studied by scanned conductance microscopy, conductive AFM, and two-terminal I−V measurements. Using this combination of measurements, we find that the conductivity of PIn/DNA nanowires is between 2.5 and 40 S cm−1 at room temperature, which is substantially greater than that in previous reports on the bulk polyindole conductivity (typically 10−2−10−1 S cm−1). The conductance at zero bias shows an Arrhenius-type of dependence on temperature over the range of 233 to 373 K, and the values observed upon heating and cooling are repeatable within 5%; this behavior is consistent with a hopping mechanism of conductivity. |
| doi_str_mv | 10.1021/nn9014533 |
| format | Article |
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The resulting nanowires are smooth, regular, conductive and had diameters in the range of 5−30 nm. These features allow them to be aligned by molecular combing and studied by scanned conductance microscopy, conductive AFM, and two-terminal I−V measurements. Using this combination of measurements, we find that the conductivity of PIn/DNA nanowires is between 2.5 and 40 S cm−1 at room temperature, which is substantially greater than that in previous reports on the bulk polyindole conductivity (typically 10−2−10−1 S cm−1). The conductance at zero bias shows an Arrhenius-type of dependence on temperature over the range of 233 to 373 K, and the values observed upon heating and cooling are repeatable within 5%; this behavior is consistent with a hopping mechanism of conductivity.</description><subject>Animals</subject><subject>Cattle</subject><subject>DNA - chemistry</subject><subject>Electric Conductivity</subject><subject>Indoles - chemistry</subject><subject>Luminescent Agents - chemistry</subject><subject>Microscopy</subject><subject>Nanowires - chemistry</subject><subject>Oxidation-Reduction</subject><subject>Polymers - chemistry</subject><subject>Silicon - chemistry</subject><subject>Silicon Dioxide - chemistry</subject><subject>Spectrum Analysis</subject><subject>Surface Properties</subject><subject>Temperature</subject><issn>1936-0851</issn><issn>1936-086X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqF0E1LwzAYB_AgipvTg19AehHxUE2al6XHMV9B5g4TvJUseco62mQmrTI_vdHNnQRPSZ788if8ETol-IrgjFxbm2PCOKV7qE9yKlIsxev-bs9JDx2FsMSYD-VQHKJeFl9JIXgflVMPK-VVWzmbKGuS8SKedAu--twMXZmMnTWdbqt3-CHThWtd3TWVhaDBtsnNZJTOoFnVqoV47ep1ZY2rIZko6z4qD-EYHZSqDnCyXQfo5e52Nn5In57vH8ejp1QxkrWppIRRYjChMldcYWEyReel1pIxTLM54bqcS5lTzjIAbYDIzFAmQCgGkhg6QBeb3JV3bx2Etmiq-Me6VhZcF4ohZ5wTMcT_S0pzkkUf5eVGau9C8FAWK181yq8Lgovv_otd_9GebVO7eQNmJ38Lj-B8A5QOxdJ13sY6_gj6AqZYjGk</recordid><startdate>20100427</startdate><enddate>20100427</enddate><creator>Hassanien, Reda</creator><creator>Al-Hinai, Mariam</creator><creator>Farha Al-Said, Said A</creator><creator>Little, Ross</creator><creator>Šiller, Lidija</creator><creator>Wright, Nicholas G</creator><creator>Houlton, Andrew</creator><creator>Horrocks, Benjamin R</creator><general>American Chemical Society</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>7TM</scope></search><sort><creationdate>20100427</creationdate><title>Preparation and Characterization of Conductive and Photoluminescent DNA-Templated Polyindole Nanowires</title><author>Hassanien, Reda ; Al-Hinai, Mariam ; Farha Al-Said, Said A ; Little, Ross ; Šiller, Lidija ; Wright, Nicholas G ; Houlton, Andrew ; Horrocks, Benjamin R</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a412t-831431d01389a5a06d2a3bfcc844032b15cfb8893542eecde182d346e6a4e81d3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2010</creationdate><topic>Animals</topic><topic>Cattle</topic><topic>DNA - chemistry</topic><topic>Electric Conductivity</topic><topic>Indoles - chemistry</topic><topic>Luminescent Agents - chemistry</topic><topic>Microscopy</topic><topic>Nanowires - chemistry</topic><topic>Oxidation-Reduction</topic><topic>Polymers - chemistry</topic><topic>Silicon - chemistry</topic><topic>Silicon Dioxide - chemistry</topic><topic>Spectrum Analysis</topic><topic>Surface Properties</topic><topic>Temperature</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Hassanien, Reda</creatorcontrib><creatorcontrib>Al-Hinai, Mariam</creatorcontrib><creatorcontrib>Farha Al-Said, Said A</creatorcontrib><creatorcontrib>Little, Ross</creatorcontrib><creatorcontrib>Šiller, Lidija</creatorcontrib><creatorcontrib>Wright, Nicholas G</creatorcontrib><creatorcontrib>Houlton, Andrew</creatorcontrib><creatorcontrib>Horrocks, Benjamin R</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>Nucleic Acids Abstracts</collection><jtitle>ACS nano</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Hassanien, Reda</au><au>Al-Hinai, Mariam</au><au>Farha Al-Said, Said A</au><au>Little, Ross</au><au>Šiller, Lidija</au><au>Wright, Nicholas G</au><au>Houlton, Andrew</au><au>Horrocks, Benjamin R</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Preparation and Characterization of Conductive and Photoluminescent DNA-Templated Polyindole Nanowires</atitle><jtitle>ACS nano</jtitle><addtitle>ACS Nano</addtitle><date>2010-04-27</date><risdate>2010</risdate><volume>4</volume><issue>4</issue><spage>2149</spage><epage>2159</epage><pages>2149-2159</pages><issn>1936-0851</issn><eissn>1936-086X</eissn><abstract>Polyindole (PIn) nanowires were formed on a λ-DNA template by chemical oxidation of indole using aqueous FeCl3. 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| subjects | Animals Cattle DNA - chemistry Electric Conductivity Indoles - chemistry Luminescent Agents - chemistry Microscopy Nanowires - chemistry Oxidation-Reduction Polymers - chemistry Silicon - chemistry Silicon Dioxide - chemistry Spectrum Analysis Surface Properties Temperature |
| title | Preparation and Characterization of Conductive and Photoluminescent DNA-Templated Polyindole Nanowires |
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