Matches in SemOpenAlex for { <https://semopenalex.org/work/W2056778244> ?p ?o ?g. }
Showing items 1 to 98 of
98
with 100 items per page.
- W2056778244 endingPage "231" @default.
- W2056778244 startingPage "225" @default.
- W2056778244 abstract "The photophysics of a series of N-alkyl- and N-cycloalkyl-substituted 1,2-naphthalimides has been investigated. Fluorescence spectra, fluorescence quantum yields and decay times as well as triplet yields are determined in a wide temperature range. The rate coefficients for fluorescence are independent of temperature. However, the rate of non-radiative processes shows characteristic temperature dependence, consisting of a temperature independent and a temperature-dependent component: knr=konr+knrT=konr + Anr exp(−Enr/RT), where nr designates either intersystem crossing or internal conversion. The temperature-independent component of internal conversion can be associated with a direct process in which the electronic energy is dissipated by a single mode, probably an aromatic vibrational mode. Vibrational coupling between the two lowest excited states is expected to occur for compounds with N-alkyl- (or N-cycloalkyl-) groups of high electron donating character, and is expected to increase as the solvent polarity decreases. This results in an efficient and temperature-dependent internal conversion to the ground state (pseudo-Jahn—Teller effect or proximity effect). The temperature-independent component of intersystem crossing may be identified with a barrierless transition from the lowest singlet to a lower-lying 4(ππ*) triplet state, while the thermally activated isc process is probably a transition to a higher 3(nπ*) triplet state." @default.
- W2056778244 created "2016-06-24" @default.
- W2056778244 creator A5009030612 @default.
- W2056778244 creator A5009260119 @default.
- W2056778244 creator A5018018548 @default.
- W2056778244 creator A5048543539 @default.
- W2056778244 creator A5051408236 @default.
- W2056778244 creator A5051933645 @default.
- W2056778244 creator A5086956338 @default.
- W2056778244 date "1998-03-01" @default.
- W2056778244 modified "2023-10-15" @default.
- W2056778244 title "Spectroscopic properties of aromatic dicarboximides Part 4: N-alkyl- and N-cycloalkyl-substituted 1,2-naphthalimides" @default.
- W2056778244 cites W1996670222 @default.
- W2056778244 cites W2001963724 @default.
- W2056778244 cites W2012109741 @default.
- W2056778244 cites W2014078427 @default.
- W2056778244 cites W2032529816 @default.
- W2056778244 cites W2058949410 @default.
- W2056778244 cites W2065901877 @default.
- W2056778244 cites W2069831347 @default.
- W2056778244 cites W2069951924 @default.
- W2056778244 cites W2076245024 @default.
- W2056778244 cites W2092867625 @default.
- W2056778244 cites W2108275263 @default.
- W2056778244 cites W2111091421 @default.
- W2056778244 cites W2136094804 @default.
- W2056778244 doi "https://doi.org/10.1016/s1010-6030(97)00339-0" @default.
- W2056778244 hasPublicationYear "1998" @default.
- W2056778244 type Work @default.
- W2056778244 sameAs 2056778244 @default.
- W2056778244 citedByCount "12" @default.
- W2056778244 countsByYear W20567782442019 @default.
- W2056778244 countsByYear W20567782442021 @default.
- W2056778244 crossrefType "journal-article" @default.
- W2056778244 hasAuthorship W2056778244A5009030612 @default.
- W2056778244 hasAuthorship W2056778244A5009260119 @default.
- W2056778244 hasAuthorship W2056778244A5018018548 @default.
- W2056778244 hasAuthorship W2056778244A5048543539 @default.
- W2056778244 hasAuthorship W2056778244A5051408236 @default.
- W2056778244 hasAuthorship W2056778244A5051933645 @default.
- W2056778244 hasAuthorship W2056778244A5086956338 @default.
- W2056778244 hasConcept C116039458 @default.
- W2056778244 hasConcept C121332964 @default.
- W2056778244 hasConcept C1276947 @default.
- W2056778244 hasConcept C147789679 @default.
- W2056778244 hasConcept C178790620 @default.
- W2056778244 hasConcept C181500209 @default.
- W2056778244 hasConcept C184779094 @default.
- W2056778244 hasConcept C185592680 @default.
- W2056778244 hasConcept C2780263894 @default.
- W2056778244 hasConcept C32909587 @default.
- W2056778244 hasConcept C33062035 @default.
- W2056778244 hasConcept C39353612 @default.
- W2056778244 hasConcept C4839761 @default.
- W2056778244 hasConcept C69523127 @default.
- W2056778244 hasConcept C73978554 @default.
- W2056778244 hasConcept C75473681 @default.
- W2056778244 hasConcept C76766466 @default.
- W2056778244 hasConcept C97355855 @default.
- W2056778244 hasConceptScore W2056778244C116039458 @default.
- W2056778244 hasConceptScore W2056778244C121332964 @default.
- W2056778244 hasConceptScore W2056778244C1276947 @default.
- W2056778244 hasConceptScore W2056778244C147789679 @default.
- W2056778244 hasConceptScore W2056778244C178790620 @default.
- W2056778244 hasConceptScore W2056778244C181500209 @default.
- W2056778244 hasConceptScore W2056778244C184779094 @default.
- W2056778244 hasConceptScore W2056778244C185592680 @default.
- W2056778244 hasConceptScore W2056778244C2780263894 @default.
- W2056778244 hasConceptScore W2056778244C32909587 @default.
- W2056778244 hasConceptScore W2056778244C33062035 @default.
- W2056778244 hasConceptScore W2056778244C39353612 @default.
- W2056778244 hasConceptScore W2056778244C4839761 @default.
- W2056778244 hasConceptScore W2056778244C69523127 @default.
- W2056778244 hasConceptScore W2056778244C73978554 @default.
- W2056778244 hasConceptScore W2056778244C75473681 @default.
- W2056778244 hasConceptScore W2056778244C76766466 @default.
- W2056778244 hasConceptScore W2056778244C97355855 @default.
- W2056778244 hasIssue "3" @default.
- W2056778244 hasLocation W20567782441 @default.
- W2056778244 hasOpenAccess W2056778244 @default.
- W2056778244 hasPrimaryLocation W20567782441 @default.
- W2056778244 hasRelatedWork W1966677725 @default.
- W2056778244 hasRelatedWork W1979214388 @default.
- W2056778244 hasRelatedWork W1998386857 @default.
- W2056778244 hasRelatedWork W2016418730 @default.
- W2056778244 hasRelatedWork W2017771087 @default.
- W2056778244 hasRelatedWork W2037026437 @default.
- W2056778244 hasRelatedWork W2058133521 @default.
- W2056778244 hasRelatedWork W2113505621 @default.
- W2056778244 hasRelatedWork W3033546688 @default.
- W2056778244 hasRelatedWork W4252411519 @default.
- W2056778244 hasVolume "113" @default.
- W2056778244 isParatext "false" @default.
- W2056778244 isRetracted "false" @default.
- W2056778244 magId "2056778244" @default.
- W2056778244 workType "article" @default.