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Ko, Hyunhyub
Functional Nanomaterials & Devices Lab
Research Interests
  • Functional nanomaterials, flexible electronics, electronic skins, wearable sensors


Nanoporous Membranes with Mixed Nanoclusters for Raman-Based Label-Free Monitoring of Peroxide Compounds

DC Field Value Language Chang, Sehoon ko Ko, Hyunhyub ko Singamaneni, Srikanth ko Gunawidjaja, Ray ko Tsukruk, Vladimir V.) ko 2014-10-02T08:51:12Z - 2014-10-02 ko 2009-07 -
dc.identifier.citation ANALYTICAL CHEMISTRY, v.81, no.14, pp.5740 - 5748 ko
dc.identifier.issn 0003-2700 ko
dc.identifier.uri -
dc.identifier.uri ko
dc.description.abstract Monitoring trace amounts of peroxide-based molecules is challenging because of the lack of common optical signatures (fluorescence or absorption in UV-vis range) or chemical functionality easily detectable with common routines. To overcome this issue, we suggest a photochemical decomposition approach followed by the analysis of chemical fragments by a fast, sensitive, and reliable Raman spectroscopic method. To facilitate this approach, we employed a novel design of surface-enhanced Raman scattering (SERS)-active nanoporous substrate based on porous alumina membranes decorated with mixed nanoclusters composed of gold nanorods and nanoparticles. The detectable amount of HMTD below 2 pg demonstrated here is about 3 orders of magnitude lower than the current limit of detection. We suggest that laser-induced photocatalytic decomposition onto nanoparticle clusters is critical for achieving label-free detection of unstable and nonresonant organic molecules. ko
dc.description.statementofresponsibility close -
dc.language ENG ko
dc.publisher AMER CHEMICAL SOC ko
dc.subject Chemical decomposition ko
dc.subject Chemical fragments ko
dc.subject Chemical functionality ko
dc.subject Current limits ko
dc.subject Gold nanorod ko
dc.subject Label-free detection ko
dc.subject Label-free monitoring ko
dc.subject Laser induced ko
dc.subject Nanoparticle clusters ko
dc.subject Nanoporous membrane ko
dc.subject Nanoporous substrate ko
dc.subject Nonresonant ko
dc.subject Novel design ko
dc.subject Optical signatures ko
dc.subject Orders of magnitude ko
dc.subject Organic molecules ko
dc.subject Photo-catalytic ko
dc.subject Porous alumina membranes ko
dc.subject Raman spectroscopic ko
dc.subject Surface-enhanced Raman scattering ko
dc.subject Trace amounts ko
dc.title Nanoporous Membranes with Mixed Nanoclusters for Raman-Based Label-Free Monitoring of Peroxide Compounds ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-67650744856 ko
dc.identifier.wosid 000268135000021 ko
dc.type.rims ART ko
dc.description.wostc 38 *
dc.description.scopustc 36 * 2015-05-06 * 2014-10-02 *
dc.identifier.doi 10.1021/ac900537d ko
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