FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W1966805498> ?p ?o ?g. }

• W1966805498 endingPage "6255" @default.
• W1966805498 startingPage "6246" @default.
• W1966805498 abstract "The detection of superparamagnetic nanoparticles using NMR logging has the potential to provide enhanced contrast in oil reservoir rock formations. The stability of the nanoparticles is critical because the NMR relaxivity (R2 ≡ 1/T2) is dependent on the particle size. Here we use a molecular theory to predict and validate experimentally the stability of citric acid-coated/PEGylated iron oxide nanoparticles under different pH conditions (pH 5, 7, 9, 11). The predicted value for the critical surface coverage required to produce a steric barrier of 5kBT for PEGylated nanoparticles (MW 2000) was 0.078 nm–2, which is less than the experimental value of 0.143 nm–2, implying that the nanoparticles should be stable at all pH values. Dynamic light scattering (DLS) measurements showed that the effective diameter did not increase at pH 7 or 9 after 30 days but increased at pH 11. The shifts in NMR relaxivity (from R2 data) at 2 MHz agreed well with the changes in hydrodynamic diameter obtained from DLS data, indicating that the aggregation behavior of the nanoparticles can be easily and quantitatively detected by NMR. The unexpected aggregation at pH 11 is due to the desorption of the surface coating (citric acid or PEG) from the nanoparticle surface not accounted for in the theory. This study shows that the stability of the nanoparticles can be predicted by the theory and detected by NMR quantitatively, which suggests the nanoparticles to be a possible oil-field nanosensor." @default.
• W1966805498 created "2016-06-24" @default.
• W1966805498 creator A5001423183 @default.
• W1966805498 creator A5017503803 @default.
• W1966805498 creator A5027116485 @default.
• W1966805498 creator A5034990232 @default.
• W1966805498 creator A5040314375 @default.
• W1966805498 creator A5057754487 @default.
• W1966805498 creator A5061822019 @default.
• W1966805498 creator A5065234406 @default.
• W1966805498 creator A5077881806 @default.
• W1966805498 creator A5085728763 @default.
• W1966805498 date "2012-04-03" @default.
• W1966805498 modified "2023-09-25" @default.
• W1966805498 title "Stability of Superparamagnetic Iron Oxide Nanoparticles at Different pH Values: Experimental and Theoretical Analysis" @default.
• W1966805498 cites W1970846574 @default.
• W1966805498 cites W1973474948 @default.
• W1966805498 cites W1984140177 @default.
• W1966805498 cites W2001861950 @default.
• W1966805498 cites W2011005325 @default.
• W1966805498 cites W2018293384 @default.
• W1966805498 cites W2018528894 @default.
• W1966805498 cites W2025652063 @default.
• W1966805498 cites W2039985275 @default.
• W1966805498 cites W2052263329 @default.
• W1966805498 cites W2052883298 @default.
• W1966805498 cites W2059037541 @default.
• W1966805498 cites W2063720795 @default.
• W1966805498 cites W2071659125 @default.
• W1966805498 cites W2078915127 @default.
• W1966805498 cites W2082496973 @default.
• W1966805498 cites W2094139456 @default.
• W1966805498 cites W2094816534 @default.
• W1966805498 cites W2112659494 @default.
• W1966805498 cites W2113601288 @default.
• W1966805498 cites W2114620534 @default.
• W1966805498 cites W2162498574 @default.
• W1966805498 cites W2163553115 @default.
• W1966805498 cites W3046140350 @default.
• W1966805498 cites W4244034585 @default.
• W1966805498 doi "https://doi.org/10.1021/la204628c" @default.
• W1966805498 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/22409538" @default.
• W1966805498 hasPublicationYear "2012" @default.
• W1966805498 type Work @default.
• W1966805498 sameAs 1966805498 @default.
• W1966805498 citedByCount "48" @default.
• W1966805498 countsByYear W19668054982012 @default.
• W1966805498 countsByYear W19668054982013 @default.
• W1966805498 countsByYear W19668054982014 @default.
• W1966805498 countsByYear W19668054982015 @default.
• W1966805498 countsByYear W19668054982016 @default.
• W1966805498 countsByYear W19668054982017 @default.
• W1966805498 countsByYear W19668054982018 @default.
• W1966805498 countsByYear W19668054982019 @default.
• W1966805498 countsByYear W19668054982020 @default.
• W1966805498 countsByYear W19668054982021 @default.
• W1966805498 countsByYear W19668054982022 @default.
• W1966805498 countsByYear W19668054982023 @default.
• W1966805498 crossrefType "journal-article" @default.
• W1966805498 hasAuthorship W1966805498A5001423183 @default.
• W1966805498 hasAuthorship W1966805498A5017503803 @default.
• W1966805498 hasAuthorship W1966805498A5027116485 @default.
• W1966805498 hasAuthorship W1966805498A5034990232 @default.
• W1966805498 hasAuthorship W1966805498A5040314375 @default.
• W1966805498 hasAuthorship W1966805498A5057754487 @default.
• W1966805498 hasAuthorship W1966805498A5061822019 @default.
• W1966805498 hasAuthorship W1966805498A5065234406 @default.
• W1966805498 hasAuthorship W1966805498A5077881806 @default.
• W1966805498 hasAuthorship W1966805498A5085728763 @default.
• W1966805498 hasConcept C113196181 @default.
• W1966805498 hasConcept C115260700 @default.
• W1966805498 hasConcept C121332964 @default.
• W1966805498 hasConcept C127413603 @default.
• W1966805498 hasConcept C14631669 @default.
• W1966805498 hasConcept C155672457 @default.
• W1966805498 hasConcept C171250308 @default.
• W1966805498 hasConcept C178790620 @default.
• W1966805498 hasConcept C185592680 @default.
• W1966805498 hasConcept C192562407 @default.
• W1966805498 hasConcept C23792430 @default.
• W1966805498 hasConcept C2779032678 @default.
• W1966805498 hasConcept C32546565 @default.
• W1966805498 hasConcept C42360764 @default.
• W1966805498 hasConcept C43617362 @default.
• W1966805498 hasConcept C62520636 @default.
• W1966805498 hasConceptScore W1966805498C113196181 @default.
• W1966805498 hasConceptScore W1966805498C115260700 @default.
• W1966805498 hasConceptScore W1966805498C121332964 @default.
• W1966805498 hasConceptScore W1966805498C127413603 @default.
• W1966805498 hasConceptScore W1966805498C14631669 @default.
• W1966805498 hasConceptScore W1966805498C155672457 @default.
• W1966805498 hasConceptScore W1966805498C171250308 @default.
• W1966805498 hasConceptScore W1966805498C178790620 @default.
• W1966805498 hasConceptScore W1966805498C185592680 @default.
• W1966805498 hasConceptScore W1966805498C192562407 @default.
• W1966805498 hasConceptScore W1966805498C23792430 @default.
• W1966805498 hasConceptScore W1966805498C2779032678 @default.
• W1966805498 hasConceptScore W1966805498C32546565 @default.

• next