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231225s2018 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.8b01557
|2 doi
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|a pubmed24n0953.xml
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|a (DE-627)NLM286044315
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|a (NLM)29961327
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|a DE-627
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|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Radziuk, Darya
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Sonochemically Assembled Photoluminescent Copper-Modified Graphene Oxide Microspheres
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|c 2018
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 26.09.2018
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|a Date Revised 26.09.2018
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a A new accessible sonochemical assembly method is developed for the preparation of photoluminescent oil-filled silicaCuS/Cu2O/CuO-graphene oxide (GO) microspheres that emit light of green, yellow, and red colors. This method is based on the ultrasonic emulsification of a biphasic mixture consisting of CuS/Cu2O/CuO-graphene oxide (GO) nanocomposites with poly(vinyl alcohol) (PVA) (aqueous phase) and tetraethyl orthosilicate with sunflower oil (organic phase). CuS/Cu2O/CuO-GO nanocomposites are composed of sonochemically formed three phases of copper: covellite CuS (p-type semiconductor), cuprite Cu2O (Bloch p-type semiconductor), and CuO (charge-transfer insulator). The photoluminescence properties of microspheres result from H-bridging between PVA and CuS/Cu2O/CuO-GO nanostructures, light absorption ability of Cu2O, and charge-transfer insulation by CuO. Substitution of PVA by S-containing methylene blue quenches fluorescence by enhanced dye adsorption on CuS/Cu2O/CuO-GO because of CuS and induced charge transfer. Non-S-containing malachite green is in a nonionized form and tends to be in the oil phase, prohibiting the charge transfer on CuS/Cu2O/CuO-GO
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Mikhnavets, Lubov
|e verfasserin
|4 aut
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1 |
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|a Tkach, Anastasia
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Tabulina, Ludmila
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Labunov, Vladimir
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 34(2018), 29 vom: 24. Juli, Seite 8599-8610
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
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|g volume:34
|g year:2018
|g number:29
|g day:24
|g month:07
|g pages:8599-8610
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|u http://dx.doi.org/10.1021/acs.langmuir.8b01557
|3 Volltext
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