Matches in SemOpenAlex for { <https://semopenalex.org/work/W2030403860> ?p ?o ?g. }
Showing items 1 to 87 of
87
with 100 items per page.
- W2030403860 endingPage "1107" @default.
- W2030403860 startingPage "1102" @default.
- W2030403860 abstract "The absorption spectra of triplet states of various substituted nitrostilbenes (e.g. 4-nitro-, 4,4′-dinitro-,4-nitro-4′-methoxy-, and 4-nitro-4′-dimethylaminostilbene) were measured in solvents of different polarity at room temperature and in glycerol triacetate at temperatures ranging from +25 to -80°C, corresponding to a viscosity range of 10−2 to 1011 poise. The spectra derived from 4-nitro-and 4,4′-dinitrostilbene do not vary with the polarity of the solvent while those of 4-nitro-4′-methoxy-, and 4-nitro-4′-dimethylaminostilbene are shifted to longer wavelengths on increasing solvent polarity. The triplet spectra of all nitrostilbenes investigated are very similar in the liquid and the glassy state of the solvent. For trans-4-nitrostilbenes the yield of triplet intermediate is temperature and viscosity independent. From these effects and the observed strong decrease of the direct trans → cis quantum yield in rigid media it is concluded that the triplet state of the nitrostilbenes has predominantly the planar trans configuration. Die Absorptionsspektren von Triplettzuständen verschiedener substituierter Nitrostilbene (z. B. 4-Nitro-, 4,4′-Dinitro-, 4-Nitro-4′-methoxy-und 4-Nitro-4′-dimethylaminostilben) werden in Lösungsmitteln unterschiedlicher Polarität bei Zimmertemperatur gemessen sowie in Glycerintriacetat im Temperaturbereich von +25 bis -80°C, entsprechend einem Viskositätsbereich von 10−2 bis 1011 Poise. Die von 4-Nitro- und 4,4′-Dinitrostilben erhaltenen Spektren hängen nicht von der Polarität des Lösungsmittels ab, während die Spektren von 4-Nitro-4′-methoxy- und 4-Nitro-4′-dimethylaminostilben zu längeren Wellenlängen hin verschoben sind, wenn die Polarität des Lösungsmittels zunimmt. Im flüssigen und glasartigen Zustand des Lösungsmittels sind die Triplettspektren aller untersuchter Nitrostilbene sehr ähnlich. Die Ausbeute des Triplettzwischenproduktes ist bei trans-4-Nitrostilbenen unabhängig von der Temperatur und der Viskosität. Aus diesen Effekten und der beobachteten starken Abnahme der direkten trans +cis-Quantenausbeute im glasartigen Zustand wird geschlossen, daß der Triplettzustand der Nitrostilbene im wesentlichen die planare trans-Konfiguration besitzt." @default.
- W2030403860 created "2016-06-24" @default.
- W2030403860 creator A5036773492 @default.
- W2030403860 creator A5042336596 @default.
- W2030403860 date "1978-10-01" @default.
- W2030403860 modified "2023-10-17" @default.
- W2030403860 title "Tripletspectra of 4-Nitrostilbenes in Polar and Non-Polar Solvents at Different Temperatures and the Configuration of the Triplet State" @default.
- W2030403860 cites W1908709108 @default.
- W2030403860 cites W1973124332 @default.
- W2030403860 cites W2004620012 @default.
- W2030403860 cites W2012161409 @default.
- W2030403860 cites W2037900714 @default.
- W2030403860 cites W2045322918 @default.
- W2030403860 cites W2049643977 @default.
- W2030403860 cites W2059058350 @default.
- W2030403860 cites W2064583392 @default.
- W2030403860 cites W2065655295 @default.
- W2030403860 cites W2085162308 @default.
- W2030403860 cites W2090892152 @default.
- W2030403860 cites W2316949608 @default.
- W2030403860 cites W2328967956 @default.
- W2030403860 cites W2949270088 @default.
- W2030403860 doi "https://doi.org/10.1002/bbpc.19780821016" @default.
- W2030403860 hasPublicationYear "1978" @default.
- W2030403860 type Work @default.
- W2030403860 sameAs 2030403860 @default.
- W2030403860 citedByCount "34" @default.
- W2030403860 crossrefType "journal-article" @default.
- W2030403860 hasAuthorship W2030403860A5036773492 @default.
- W2030403860 hasAuthorship W2030403860A5042336596 @default.
- W2030403860 hasConcept C119824511 @default.
- W2030403860 hasConcept C121332964 @default.
- W2030403860 hasConcept C125287762 @default.
- W2030403860 hasConcept C1276947 @default.
- W2030403860 hasConcept C159985019 @default.
- W2030403860 hasConcept C171001562 @default.
- W2030403860 hasConcept C178790620 @default.
- W2030403860 hasConcept C185592680 @default.
- W2030403860 hasConcept C192562407 @default.
- W2030403860 hasConcept C2780263894 @default.
- W2030403860 hasConcept C2780471494 @default.
- W2030403860 hasConcept C2780639532 @default.
- W2030403860 hasConcept C29705727 @default.
- W2030403860 hasConcept C2992176605 @default.
- W2030403860 hasConcept C62520636 @default.
- W2030403860 hasConcept C67218372 @default.
- W2030403860 hasConcept C75473681 @default.
- W2030403860 hasConcept C91881484 @default.
- W2030403860 hasConceptScore W2030403860C119824511 @default.
- W2030403860 hasConceptScore W2030403860C121332964 @default.
- W2030403860 hasConceptScore W2030403860C125287762 @default.
- W2030403860 hasConceptScore W2030403860C1276947 @default.
- W2030403860 hasConceptScore W2030403860C159985019 @default.
- W2030403860 hasConceptScore W2030403860C171001562 @default.
- W2030403860 hasConceptScore W2030403860C178790620 @default.
- W2030403860 hasConceptScore W2030403860C185592680 @default.
- W2030403860 hasConceptScore W2030403860C192562407 @default.
- W2030403860 hasConceptScore W2030403860C2780263894 @default.
- W2030403860 hasConceptScore W2030403860C2780471494 @default.
- W2030403860 hasConceptScore W2030403860C2780639532 @default.
- W2030403860 hasConceptScore W2030403860C29705727 @default.
- W2030403860 hasConceptScore W2030403860C2992176605 @default.
- W2030403860 hasConceptScore W2030403860C62520636 @default.
- W2030403860 hasConceptScore W2030403860C67218372 @default.
- W2030403860 hasConceptScore W2030403860C75473681 @default.
- W2030403860 hasConceptScore W2030403860C91881484 @default.
- W2030403860 hasIssue "10" @default.
- W2030403860 hasLocation W20304038601 @default.
- W2030403860 hasOpenAccess W2030403860 @default.
- W2030403860 hasPrimaryLocation W20304038601 @default.
- W2030403860 hasRelatedWork W2006089966 @default.
- W2030403860 hasRelatedWork W2022040498 @default.
- W2030403860 hasRelatedWork W2028098856 @default.
- W2030403860 hasRelatedWork W2085513214 @default.
- W2030403860 hasRelatedWork W2086710427 @default.
- W2030403860 hasRelatedWork W2151573300 @default.
- W2030403860 hasRelatedWork W2383092905 @default.
- W2030403860 hasRelatedWork W2383659562 @default.
- W2030403860 hasRelatedWork W279005553 @default.
- W2030403860 hasRelatedWork W4237316520 @default.
- W2030403860 hasVolume "82" @default.
- W2030403860 isParatext "false" @default.
- W2030403860 isRetracted "false" @default.
- W2030403860 magId "2030403860" @default.
- W2030403860 workType "article" @default.