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Rapid synthesis and decoration of reduced graphene oxide with gold nanoparticles by thermostable peptides for memory device and photothermal applications

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dc.contributor.author Otari, Sachin V
dc.contributor.author Kumar, Manoj
dc.contributor.author Anwar, Muhammad Zahid
dc.contributor.author Thorat, Nanasaheb D.
dc.contributor.author Patel, Sanjay K.S
dc.contributor.author Lee, Dongjin
dc.contributor.author Lee, Jai Hyo
dc.contributor.author Lee, Jung-Kul
dc.contributor.author Kang, Yun Chan
dc.contributor.author Zhang, Liaoyuan
dc.date.accessioned 2017-10-04T09:49:29Z
dc.date.available 2017-10-04T09:49:29Z
dc.date.issued 2017
dc.identifier.uri http://hdl.handle.net/10344/6120
dc.description peer-reviewed en_US
dc.description.abstract This article presents novel, rapid, and environmentally benign synthesis method for one-step reduction and decoration of graphene oxide with gold nanoparticles (NAuNPs) by using thermostable antimicrobial nisin peptides to form a gold-nanoparticles-reduced graphene oxide (NAu-rGO) nanocomposite. The formed composite material was characterized by UV/Vis spectroscopy, X-ray diffraction, Raman spectroscopy, X-ray photoelectron spectroscopy, field emission scanning electron microscopy, and high-resolution transmission electron microscopy (HR-TEM). HR-TEM analysis revealed the formation of spherical AuNPs of 5–30 nm in size on reduced graphene oxide (rGO) nanosheets. A non-volatile-memory device was prepared based on a solution-processed ZnO thin-film transistor fabricated by inserting the NAu-rGO nanocomposite in the gate dielectric stack as a charge trapping medium. The transfer characteristic of the ZnO thin-film transistor memory device showed large clockwise hysteresis behaviour because of charge carrier trapping in the NAu-rGO nanocomposite. Under positive and negative bias conditions, clear positive and negative threshold voltage shifts occurred, which were attributed to charge carrier trapping and de-trapping in the ZnO/NAu-rGO/SiO2 structure. Also, the photothermal effect of the NAu-rGO nanocomposites on MCF7 breast cancer cells caused inhibition of ~80% cells after irradiation with infrared light (0.5 W cm−2) for 5 min. en_US
dc.language.iso eng en_US
dc.publisher Nature Publishing Group en_US
dc.relation.ispartofseries Scientific Reports;7: 10980
dc.subject rapid en_US
dc.subject synthesis en_US
dc.subject decoration en_US
dc.subject reduced graphene oxide en_US
dc.subject gold nanoparticles en_US
dc.subject thermostable peptides en_US
dc.subject memory en_US
dc.subject photothermal applications en_US
dc.title Rapid synthesis and decoration of reduced graphene oxide with gold nanoparticles by thermostable peptides for memory device and photothermal applications en_US
dc.type info:eu-repo/semantics/article en_US
dc.type.supercollection all_ul_research en_US
dc.type.supercollection ul_published_reviewed en_US
dc.identifier.doi 10.1038/s41598-017-10777-1
dc.contributor.sponsor Ministry of Trade, Industry & Energy, Republic of Korea en_US
dc.relation.projectid (20153030091450, 20153010092130) en_US
dc.rights.accessrights info:eu-repo/semantics/openAccess en_US


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