FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2154450191> ?p ?o ?g. }

• W2154450191 endingPage "1486" @default.
• W2154450191 startingPage "1481" @default.
• W2154450191 abstract "1-Naphthol (ROH)–triethylamine(NEt3) hydrogen-bonded systems in non-polar rigid matrices at 77 K show dual fluorescence ascribable to the contact ion pair (CIP), with an in-plane orientation between excited naphtholate and alkylammonium ions, and the separated ion pair (SIP) with an out-of-plane orientation between them. However, at room temperature it was found that there was remarkable quenching of the excited singlet state of the ROH–NEt3 hydrogen-bonded system. Using nanosecond time-resolved emission spectroscopy, temperature effects on the fluorescence-decay kinetics of the ROH–NEt3 system has been studied in polyethylene film and methylcyclohexane–isopentane (MP, 3:1 vol.: vol.) to obtain the excited state behaviour of CIP and SIP. The fluorescence intensities and peaks did not change in the temperature range 77–100 K. Above 100 K, a gradual red shift of the total fluorescence peak with loss of intensity was observed, the effect being more pronounced in MP, especially after the glass-softening temperature (ca. 115 K). Two different quenching processes were found to be operative. Rapid quenching competing with excited-state proton transfer in both hydrogen-bonded systems occurred at high temperatures (> 100 K). This resulted in a considerable decrease of the total fluorescence quantum yield (ϕΣ) with no significant change in fluorescence lifetimes in the temperature range 100–130 K. The quenching mechanism might be a fast internal conversion due to the out-of-plane bending motion of O–H ⋯ N bond. Above 130 K, a new quenching process resulting in the decrease of fluorescence lifetimes of both SIP and CIP also appeared. This dynamic quenching of excited ion pairs is probably caused by a charge–transfer interaction. In addition, from the appearance of neutral ROH phosphorescence, enhanced intersystem crossing and subsequent reverse proton transfer in the triplet state might be taking place." @default.
• W2154450191 created "2016-06-24" @default.
• W2154450191 creator A5023654590 @default.
• W2154450191 creator A5030009364 @default.
• W2154450191 date "1996-01-01" @default.
• W2154450191 modified "2023-10-14" @default.
• W2154450191 title "Temperature effects on dual emission from ion pairs produced by excited-state proton transfer in the 1-naphthol–triethylamine system" @default.
• W2154450191 cites W1632470421 @default.
• W2154450191 cites W1965503714 @default.
• W2154450191 cites W1966530879 @default.
• W2154450191 cites W1968971529 @default.
• W2154450191 cites W1976316159 @default.
• W2154450191 cites W1979961213 @default.
• W2154450191 cites W1980919943 @default.
• W2154450191 cites W1982228195 @default.
• W2154450191 cites W1985446563 @default.
• W2154450191 cites W1990788486 @default.
• W2154450191 cites W1992379401 @default.
• W2154450191 cites W2003771763 @default.
• W2154450191 cites W2005237806 @default.
• W2154450191 cites W2015869191 @default.
• W2154450191 cites W2032887963 @default.
• W2154450191 cites W2038138668 @default.
• W2154450191 cites W2044371856 @default.
• W2154450191 cites W2056979955 @default.
• W2154450191 cites W2065056491 @default.
• W2154450191 cites W2069194704 @default.
• W2154450191 cites W2071314190 @default.
• W2154450191 cites W2075723505 @default.
• W2154450191 cites W2077572073 @default.
• W2154450191 cites W2079266022 @default.
• W2154450191 cites W2081072090 @default.
• W2154450191 cites W2082431641 @default.
• W2154450191 cites W2082953204 @default.
• W2154450191 cites W2083490145 @default.
• W2154450191 cites W2090370643 @default.
• W2154450191 cites W2113542877 @default.
• W2154450191 cites W2144089044 @default.
• W2154450191 cites W2329325527 @default.
• W2154450191 cites W2604357584 @default.
• W2154450191 cites W3328215 @default.
• W2154450191 doi "https://doi.org/10.1039/ft9969201481" @default.
• W2154450191 hasPublicationYear "1996" @default.
• W2154450191 type Work @default.
• W2154450191 sameAs 2154450191 @default.
• W2154450191 citedByCount "6" @default.
• W2154450191 crossrefType "journal-article" @default.
• W2154450191 hasAuthorship W2154450191A5023654590 @default.
• W2154450191 hasAuthorship W2154450191A5030009364 @default.
• W2154450191 hasConcept C121332964 @default.
• W2154450191 hasConcept C124952713 @default.
• W2154450191 hasConcept C142362112 @default.
• W2154450191 hasConcept C145148216 @default.
• W2154450191 hasConcept C178790620 @default.
• W2154450191 hasConcept C181500209 @default.
• W2154450191 hasConcept C184779094 @default.
• W2154450191 hasConcept C185544564 @default.
• W2154450191 hasConcept C185592680 @default.
• W2154450191 hasConcept C192562407 @default.
• W2154450191 hasConcept C2780822795 @default.
• W2154450191 hasConcept C2780980858 @default.
• W2154450191 hasConcept C2781283055 @default.
• W2154450191 hasConcept C54516573 @default.
• W2154450191 hasConcept C75473681 @default.
• W2154450191 hasConceptScore W2154450191C121332964 @default.
• W2154450191 hasConceptScore W2154450191C124952713 @default.
• W2154450191 hasConceptScore W2154450191C142362112 @default.
• W2154450191 hasConceptScore W2154450191C145148216 @default.
• W2154450191 hasConceptScore W2154450191C178790620 @default.
• W2154450191 hasConceptScore W2154450191C181500209 @default.
• W2154450191 hasConceptScore W2154450191C184779094 @default.
• W2154450191 hasConceptScore W2154450191C185544564 @default.
• W2154450191 hasConceptScore W2154450191C185592680 @default.
• W2154450191 hasConceptScore W2154450191C192562407 @default.
• W2154450191 hasConceptScore W2154450191C2780822795 @default.
• W2154450191 hasConceptScore W2154450191C2780980858 @default.
• W2154450191 hasConceptScore W2154450191C2781283055 @default.
• W2154450191 hasConceptScore W2154450191C54516573 @default.
• W2154450191 hasConceptScore W2154450191C75473681 @default.
• W2154450191 hasIssue "9" @default.
• W2154450191 hasLocation W21544501911 @default.
• W2154450191 hasOpenAccess W2154450191 @default.
• W2154450191 hasPrimaryLocation W21544501911 @default.
• W2154450191 hasRelatedWork W1964083636 @default.
• W2154450191 hasRelatedWork W1985446563 @default.
• W2154450191 hasRelatedWork W2013302067 @default.
• W2154450191 hasRelatedWork W2038138668 @default.
• W2154450191 hasRelatedWork W2061692685 @default.
• W2154450191 hasRelatedWork W2087867849 @default.
• W2154450191 hasRelatedWork W2131031303 @default.
• W2154450191 hasRelatedWork W2899084033 @default.
• W2154450191 hasRelatedWork W3162592425 @default.
• W2154450191 hasRelatedWork W2524178730 @default.
• W2154450191 hasVolume "92" @default.
• W2154450191 isParatext "false" @default.
• W2154450191 isRetracted "false" @default.
• W2154450191 magId "2154450191" @default.
• W2154450191 workType "article" @default.