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The interfacial activity of PPs was compared to that of homogeneous hydrophilic nanoparticles (HPs), fully functionalized with PEG, by means of pendant drop tensiometry at water\/air and water\/decane interfaces. We compared interfacial activities in three different spreading agents: water, water\/chloroform, and pure chloroform. We found that the interfacial activity of PPs was close to zero (\u223c2 mN\/m) when the spreading agent was water and increased to \u223c14 mN\/m when the spreading agent was water\/chloroform. When the nanoparticles were deposited with pure chloroform, the interfacial activity reached up to 60 mN\/m by compression. In all cases, PPs exhibited higher interfacial activity than HPs, which were not interfacially active, regardless of the spreading agent. The interfacial activity at the water\/decane interface was found to be significantly lower than that at the water\/air interface because PPs aggregate in decane. Interfacial dilatational rheology showed that PPs form a stronger elastic shell at the pendant drop interface, compared to HPs. The significantly high interfacial activity obtained with PPs in this study highlights the importance of the polymeric patchy shell and the spreading agent.<\/jats:p>","DOI":"10.1021\/acsomega.6b00131","type":"journal-article","created":{"date-parts":[[2016,8,31]],"date-time":"2016-08-31T15:47:27Z","timestamp":1472658447000},"page":"311-317","source":"Crossref","is-referenced-by-count":7,"title":["Interfacial Activity of Gold Nanoparticles Coated\nwith a Polymeric Patchy Shell and the Role of Spreading Agents"],"prefix":"10.1021","volume":"1","author":[{"given":"Miguel A.","family":"Ferna\u0301ndez-Rodri\u0301guez","sequence":"first","affiliation":[{"name":"University of Granada , , ,","place":["Granada, Spain, 18001"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ana M.","family":"Percebom","sequence":"additional","affiliation":[{"name":"CIC biomaGUNE , Paseo de Miramo\u0301n 182 , ,","place":["Donostia-San Sebastia\u0301n, Spain, 20009"]},{"name":"Pontificia Universidade Catolica do Rio de Janeiro , , Rua Marque\u0302s de Sa\u0303o Vicente, 225 , , ,","place":["Rio de Janeiro, RJ, Brazil, 22451-900"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Juan J.","family":"Giner-Casares","sequence":"additional","affiliation":[{"name":"CIC biomaGUNE , Paseo de Miramo\u0301n 182 , ,","place":["Donostia-San Sebastia\u0301n, Spain, 20009"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Miguel A.","family":"Rodri\u0301guez-Valverde","sequence":"additional","affiliation":[{"name":"University of Granada , , ,","place":["Granada, Spain, 18001"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Miguel A.","family":"Cabrerizo-Vi\u0301lchez","sequence":"additional","affiliation":[{"name":"University of Granada , , ,","place":["Granada, Spain, 18001"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Luis M.","family":"Liz-Marza\u0301n","sequence":"additional","affiliation":[{"name":"CIC biomaGUNE , Paseo de Miramo\u0301n 182 , ,","place":["Donostia-San Sebastia\u0301n, Spain, 20009"]},{"name":"Ikerbasque, Basque Foundation for Science , ,","place":["Bilbao, Spain, 48013"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Roque","family":"Hidalgo-A\u0301lvarez","sequence":"additional","affiliation":[{"name":"University of Granada , , ,","place":["Granada, Spain, 18001"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"316","published-online":{"date-parts":[[2016,8,31]]},"reference":[{"key":"2026090205200908500_cit1","doi-asserted-by":"publisher","first-page":"11725","DOI":"10.1021\/la301896c","article-title":"Pickering Emulsions Stabilized by Nanoparticle Surfactants","volume":"28","author":"Larson-Smith","year":"2012","journal-title":"Langmuir"},{"key":"2026090205200908500_cit2","doi-asserted-by":"publisher","first-page":"21","DOI":"10.1016\/S1359-0294(02)00008-0","article-title":"Particles\nas surfactants-similarities and differences","volume":"7","author":"Binks","year":"2002","journal-title":"Curr. 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