FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2056518219> ?p ?o ?g. }

• W2056518219 endingPage "4221" @default.
• W2056518219 startingPage "4215" @default.
• W2056518219 abstract "Steady-state and time-resolved fluorescence measurements were performed on aqueous solutions of poly(ethylene-co-methacrylic acid) (EMAA) ionomers using pyrene (P) and 1,3-bis(1-pyrenyl) propane (P3P) as the luminophores and the nitroxide radical 5-doxylstearic acid methyl ester (5DSE) as the fluorescence quencher. The ionomers contained 7.5 mol % methacrylic acid and were neutralized (90%) with KOH. The fluorescence spectra of P and P3P together with the electron spin resonance (ESR) spectra of 5DSE indicate that all probes are located in an environment of low polarity and high viscosity that was identified as the hydrophobic micellar core of EMAA aggregates. The local polarity was estimated from the intensity ratio of the third to the first vibronic peaks (IIII/II) in the fluorescence spectrum of P. The critical micelle concentration (CMC) of the ionomer, CMC = 0.02% (w/w) EMAA, was deduced from the dependence of IIII/II on the ionomer concentration. The spectroscopic data (ESR and fluorescence) point to the existence, below the CMC, of intramolecular (unimeric) micelles, which are in equilibrium with large aggregates above the CMC. The microviscosity of the micellar core, η, was estimated to be ≥230 cP at ambient temperature on the basis of the fluorescence spectra of P3P, from a calibration curve of the intensity ratio of the excimer to monomer emissions, IE/IM, vs viscosity in 14 nonaqueous solvents of known viscosities. The fluorescence decay of P in EMAA in the presence of 5DSE as the quencher was analyzed with two kinetic models, the Infelta−Tachiya model based on a Poisson distribution of the quencher and the luminophore in the micelles and the general approach of dispersive kinetics that introduced the time-dependent rate coefficient, kqm, for intramicellar quenching. The second model gives a better fit to the experimental data, and the low value of the dispersive parameter, α = 0.30 (compared to unity for classical kinetics), indicates a broad distribution of the quenching rate constants. The results obtained in this study add important structural details to the recent models for self-assembly of EMAA ionomers, which were deduced from spin probe ESR spectroscopy and small-angle neutron scattering." @default.
• W2056518219 created "2016-06-24" @default.
• W2056518219 creator A5025754591 @default.
• W2056518219 creator A5032079524 @default.
• W2056518219 creator A5063287358 @default.
• W2056518219 creator A5086875883 @default.
• W2056518219 date "1998-05-01" @default.
• W2056518219 modified "2023-10-11" @default.
• W2056518219 title "Fluorescence Studies of Self-Assembly in Aqueous Solutions of Poly(ethylene-<i>c</i><i>o</i>-methacrylic acid) Ionomers" @default.
• W2056518219 cites W1963869060 @default.
• W2056518219 cites W1970419958 @default.
• W2056518219 cites W1971428018 @default.
• W2056518219 cites W1976335996 @default.
• W2056518219 cites W1976375071 @default.
• W2056518219 cites W1977932576 @default.
• W2056518219 cites W1993053769 @default.
• W2056518219 cites W1993790948 @default.
• W2056518219 cites W1994282950 @default.
• W2056518219 cites W1999916250 @default.
• W2056518219 cites W2001160962 @default.
• W2056518219 cites W2003193681 @default.
• W2056518219 cites W2004037328 @default.
• W2056518219 cites W2025331219 @default.
• W2056518219 cites W2026076352 @default.
• W2056518219 cites W2040364498 @default.
• W2056518219 cites W2050536752 @default.
• W2056518219 cites W2054088480 @default.
• W2056518219 cites W2054434848 @default.
• W2056518219 cites W2054609339 @default.
• W2056518219 cites W2057369630 @default.
• W2056518219 cites W2067628224 @default.
• W2056518219 cites W2076664916 @default.
• W2056518219 cites W2077363269 @default.
• W2056518219 cites W2085759071 @default.
• W2056518219 cites W2091558935 @default.
• W2056518219 cites W2113224171 @default.
• W2056518219 cites W2130677626 @default.
• W2056518219 cites W2916944044 @default.
• W2056518219 cites W65637270 @default.
• W2056518219 doi "https://doi.org/10.1021/ja9735517" @default.
• W2056518219 hasPublicationYear "1998" @default.
• W2056518219 type Work @default.
• W2056518219 sameAs 2056518219 @default.
• W2056518219 citedByCount "42" @default.
• W2056518219 countsByYear W20565182192012 @default.
• W2056518219 countsByYear W20565182192013 @default.
• W2056518219 countsByYear W20565182192017 @default.
• W2056518219 countsByYear W20565182192020 @default.
• W2056518219 countsByYear W20565182192021 @default.
• W2056518219 crossrefType "journal-article" @default.
• W2056518219 hasAuthorship W2056518219A5025754591 @default.
• W2056518219 hasAuthorship W2056518219A5032079524 @default.
• W2056518219 hasAuthorship W2056518219A5063287358 @default.
• W2056518219 hasAuthorship W2056518219A5086875883 @default.
• W2056518219 hasConcept C11268172 @default.
• W2056518219 hasConcept C113196181 @default.
• W2056518219 hasConcept C121332964 @default.
• W2056518219 hasConcept C139932579 @default.
• W2056518219 hasConcept C147789679 @default.
• W2056518219 hasConcept C15920480 @default.
• W2056518219 hasConcept C166940927 @default.
• W2056518219 hasConcept C178790620 @default.
• W2056518219 hasConcept C184651966 @default.
• W2056518219 hasConcept C185592680 @default.
• W2056518219 hasConcept C2775968528 @default.
• W2056518219 hasConcept C2776171763 @default.
• W2056518219 hasConcept C2776181106 @default.
• W2056518219 hasConcept C2778951431 @default.
• W2056518219 hasConcept C2779394729 @default.
• W2056518219 hasConcept C2779716929 @default.
• W2056518219 hasConcept C41625074 @default.
• W2056518219 hasConcept C521977710 @default.
• W2056518219 hasConcept C55493867 @default.
• W2056518219 hasConcept C62520636 @default.
• W2056518219 hasConcept C64237528 @default.
• W2056518219 hasConcept C75473681 @default.
• W2056518219 hasConcept C91881484 @default.
• W2056518219 hasConceptScore W2056518219C11268172 @default.
• W2056518219 hasConceptScore W2056518219C113196181 @default.
• W2056518219 hasConceptScore W2056518219C121332964 @default.
• W2056518219 hasConceptScore W2056518219C139932579 @default.
• W2056518219 hasConceptScore W2056518219C147789679 @default.
• W2056518219 hasConceptScore W2056518219C15920480 @default.
• W2056518219 hasConceptScore W2056518219C166940927 @default.
• W2056518219 hasConceptScore W2056518219C178790620 @default.
• W2056518219 hasConceptScore W2056518219C184651966 @default.
• W2056518219 hasConceptScore W2056518219C185592680 @default.
• W2056518219 hasConceptScore W2056518219C2775968528 @default.
• W2056518219 hasConceptScore W2056518219C2776171763 @default.
• W2056518219 hasConceptScore W2056518219C2776181106 @default.
• W2056518219 hasConceptScore W2056518219C2778951431 @default.
• W2056518219 hasConceptScore W2056518219C2779394729 @default.
• W2056518219 hasConceptScore W2056518219C2779716929 @default.
• W2056518219 hasConceptScore W2056518219C41625074 @default.
• W2056518219 hasConceptScore W2056518219C521977710 @default.
• W2056518219 hasConceptScore W2056518219C55493867 @default.
• W2056518219 hasConceptScore W2056518219C62520636 @default.
• W2056518219 hasConceptScore W2056518219C64237528 @default.

• next