FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2332526797> ?p ?o ?g. }

• W2332526797 endingPage "19256" @default.
• W2332526797 startingPage "19250" @default.
• W2332526797 abstract "The absorption and emission properties of a series of amphiphilic N-alkyl-N-methyl-3-(pyren-1-yl)propan-1-ammonium chloride salts were investigated in solvents of different polarities and over a wide concentration range. For example, at 10(-5) M concentrations in tetrahydrofuran (THF), salts with at least one N-H bond exhibited broad, structureless emissions even though time-correlated single photon counting (TCSPC) experiments indicated negligible static or dynamic intermolecular interactions. Salts with a butylene spacer or lacking an N-H bond showed no discernible structureless emission; their emission spectra were dominated by the normal monomeric fluorescence of a pyrenyl group and the TCSPC histograms could be interpreted on the basis of intramolecular photophysics. The broad, structureless emission is attributed to an unprecedented, rapid, adiabatic proton-transfer to the medium, followed by the formation of an intramolecular exciplex consisting of amine and pyrenyl groups. The proposed mechanism involves excitation of a ground-state conformer of the salts in which the ammonium group sits over the pyrenyl ring due to electrostatic stabilization. At higher concentrations, with longer N-alkyl groups, or in selected solvents, electronic excitation of the salts led to dynamic and static excimeric emissions. For example, whereas the emission spectrum of 10(-3) M N-hexyl-N-methyl-3-(pyren-1-yl)propan-1-ammonium chloride in THF consisted of comparable amounts of monomeric and excimeric emission, the emission from 10(-5) M N-dodecyl-N-methyl-3-(pyren-1-yl)propan-1-ammonium chloride in 1:9 (v:v) ethanol/water solutions was dominated by excimeric emission, and discrete particles near micrometer size were discernible from confocal microscopy and dynamic light scattering experiments. Comparison of the static and dynamic emission characteristics of the particles and of the neat solid of N-dodecyl-N-methyl-3-(pyren-1-yl)propan-1-ammonium chloride indicate that molecular packing in the microparticles and in the single crystal are very similar if not the same. It is suggested that other examples of the adiabatic proton transfer found in the dilute concentration regime with the pyrenyl salts may be occurring in very different systems, such as in proteins where conformational constraints hold ammonium groups over aromatic rings of peptide units." @default.
• W2332526797 created "2016-06-24" @default.
• W2332526797 creator A5000561706 @default.
• W2332526797 creator A5047271234 @default.
• W2332526797 date "2011-11-03" @default.
• W2332526797 modified "2023-10-07" @default.
• W2332526797 title "‘Remote’ Adiabatic Photoinduced Deprotonation and Aggregate Formation of Amphiphilic <i>N</i>-Alkyl-<i>N</i>-methyl-3-(pyren-1-yl)propan-1-ammonium Chloride Salts" @default.
• W2332526797 cites W1616695937 @default.
• W2332526797 cites W1965361397 @default.
• W2332526797 cites W1976010704 @default.
• W2332526797 cites W1983759499 @default.
• W2332526797 cites W1990177152 @default.
• W2332526797 cites W1991858550 @default.
• W2332526797 cites W1993790948 @default.
• W2332526797 cites W1997950407 @default.
• W2332526797 cites W2002363341 @default.
• W2332526797 cites W2004446238 @default.
• W2332526797 cites W2004686086 @default.
• W2332526797 cites W2006987885 @default.
• W2332526797 cites W2007564889 @default.
• W2332526797 cites W2008927420 @default.
• W2332526797 cites W2022082781 @default.
• W2332526797 cites W2030655087 @default.
• W2332526797 cites W2032975964 @default.
• W2332526797 cites W2037288322 @default.
• W2332526797 cites W2042574638 @default.
• W2332526797 cites W2042942079 @default.
• W2332526797 cites W2043222358 @default.
• W2332526797 cites W2047497763 @default.
• W2332526797 cites W2048536746 @default.
• W2332526797 cites W2054525948 @default.
• W2332526797 cites W2057483849 @default.
• W2332526797 cites W2057727045 @default.
• W2332526797 cites W2060248710 @default.
• W2332526797 cites W2066700445 @default.
• W2332526797 cites W2070166228 @default.
• W2332526797 cites W2071741062 @default.
• W2332526797 cites W2073464189 @default.
• W2332526797 cites W2074821401 @default.
• W2332526797 cites W2074938143 @default.
• W2332526797 cites W2082272518 @default.
• W2332526797 cites W2082986967 @default.
• W2332526797 cites W2090452278 @default.
• W2332526797 cites W2091875404 @default.
• W2332526797 cites W2112168667 @default.
• W2332526797 cites W2118997899 @default.
• W2332526797 cites W2131350133 @default.
• W2332526797 cites W2148066840 @default.
• W2332526797 cites W2149006325 @default.
• W2332526797 cites W2152414522 @default.
• W2332526797 cites W2314553429 @default.
• W2332526797 cites W2316236311 @default.
• W2332526797 cites W2320457228 @default.
• W2332526797 cites W4211017567 @default.
• W2332526797 cites W4243897536 @default.
• W2332526797 doi "https://doi.org/10.1021/ja208674s" @default.
• W2332526797 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/22050478" @default.
• W2332526797 hasPublicationYear "2011" @default.
• W2332526797 type Work @default.
• W2332526797 sameAs 2332526797 @default.
• W2332526797 citedByCount "7" @default.
• W2332526797 countsByYear W23325267972013 @default.
• W2332526797 countsByYear W23325267972016 @default.
• W2332526797 countsByYear W23325267972017 @default.
• W2332526797 countsByYear W23325267972019 @default.
• W2332526797 crossrefType "journal-article" @default.
• W2332526797 hasAuthorship W2332526797A5000561706 @default.
• W2332526797 hasAuthorship W2332526797A5047271234 @default.
• W2332526797 hasConcept C118629725 @default.
• W2332526797 hasConcept C121332964 @default.
• W2332526797 hasConcept C145148216 @default.
• W2332526797 hasConcept C147789679 @default.
• W2332526797 hasConcept C155647269 @default.
• W2332526797 hasConcept C166940927 @default.
• W2332526797 hasConcept C166950319 @default.
• W2332526797 hasConcept C178790620 @default.
• W2332526797 hasConcept C185592680 @default.
• W2332526797 hasConcept C2779660836 @default.
• W2332526797 hasConcept C2780263894 @default.
• W2332526797 hasConcept C32909587 @default.
• W2332526797 hasConcept C521977710 @default.
• W2332526797 hasConcept C62520636 @default.
• W2332526797 hasConcept C71240020 @default.
• W2332526797 hasConcept C74561354 @default.
• W2332526797 hasConcept C75079739 @default.
• W2332526797 hasConcept C75473681 @default.
• W2332526797 hasConcept C91881484 @default.
• W2332526797 hasConceptScore W2332526797C118629725 @default.
• W2332526797 hasConceptScore W2332526797C121332964 @default.
• W2332526797 hasConceptScore W2332526797C145148216 @default.
• W2332526797 hasConceptScore W2332526797C147789679 @default.
• W2332526797 hasConceptScore W2332526797C155647269 @default.
• W2332526797 hasConceptScore W2332526797C166940927 @default.
• W2332526797 hasConceptScore W2332526797C166950319 @default.
• W2332526797 hasConceptScore W2332526797C178790620 @default.
• W2332526797 hasConceptScore W2332526797C185592680 @default.
• W2332526797 hasConceptScore W2332526797C2779660836 @default.
• W2332526797 hasConceptScore W2332526797C2780263894 @default.

• next