Matches in SemOpenAlex for { <https://semopenalex.org/work/W2034129708> ?p ?o ?g. }
- W2034129708 endingPage "60" @default.
- W2034129708 startingPage "45" @default.
- W2034129708 abstract "Spectral characteristics of 2-(4′-amino-3-pyridyl)benzimidazole (4-A3PyBI) have been studied in different solvents, as well as at different acid or base concentrations using absorption, fluorescence excitation and fluorescence spectroscopy. Excited singlet state (S1) lifetimes for each species were measured using nanosecond time-dependent spectrofluorimeter. AM1 semi-empirical and density functional theoretical (DFT) calculations were performed on each species for the spectral assignment. From the above results it is concluded that 4-A3PyBI exists only in the amine form. First protonation occurs at pyridineN– atom and second protonation at the benzimidazole (BI)N– atom. When dication (DC) species is excited, two emission bands are observed, having the same fluorescence excitation spectra, suggesting the same ground state (S0) precursor. Short wavelength (SW) emission band is assigned to the π–π* transition and long wavelength (LW) emission to the charge transfer transition. First deprotonation in S0 state occurs from >N–H moiety, whereas in S1 state it is from –NH2 group. Monoanion (MA) so formed in S1 state is non-fluorescent. Dianion (DA) is formed by further deprotonating >N–H moiety in S1 state and it is fluorescent. pKa values were determined and discussed." @default.
- W2034129708 created "2016-06-24" @default.
- W2034129708 creator A5010071100 @default.
- W2034129708 date "2006-05-01" @default.
- W2034129708 modified "2023-09-26" @default.
- W2034129708 title "Spectral characteristics of 2-(4′-amino-3-pyridyl)benzimidazole: Effects of solvent and acid or base concentration" @default.
- W2034129708 cites W1446987266 @default.
- W2034129708 cites W1550061415 @default.
- W2034129708 cites W1963645592 @default.
- W2034129708 cites W1966597622 @default.
- W2034129708 cites W1978625139 @default.
- W2034129708 cites W1980069266 @default.
- W2034129708 cites W1984064817 @default.
- W2034129708 cites W1989135476 @default.
- W2034129708 cites W1989329027 @default.
- W2034129708 cites W1994568165 @default.
- W2034129708 cites W2000486252 @default.
- W2034129708 cites W2002723528 @default.
- W2034129708 cites W2003413531 @default.
- W2034129708 cites W2006485813 @default.
- W2034129708 cites W2014358987 @default.
- W2034129708 cites W2015501698 @default.
- W2034129708 cites W2023598065 @default.
- W2034129708 cites W2027303404 @default.
- W2034129708 cites W2028129515 @default.
- W2034129708 cites W2028800074 @default.
- W2034129708 cites W2030518749 @default.
- W2034129708 cites W2034613292 @default.
- W2034129708 cites W2038331282 @default.
- W2034129708 cites W2040197750 @default.
- W2034129708 cites W2040369234 @default.
- W2034129708 cites W2041228187 @default.
- W2034129708 cites W2041263979 @default.
- W2034129708 cites W2051769308 @default.
- W2034129708 cites W2052573265 @default.
- W2034129708 cites W2054092126 @default.
- W2034129708 cites W2068003057 @default.
- W2034129708 cites W2068228867 @default.
- W2034129708 cites W2069197437 @default.
- W2034129708 cites W2075723505 @default.
- W2034129708 cites W2077973224 @default.
- W2034129708 cites W2081799099 @default.
- W2034129708 cites W2093283955 @default.
- W2034129708 cites W2143981217 @default.
- W2034129708 cites W2152423169 @default.
- W2034129708 cites W2321801905 @default.
- W2034129708 cites W2329846514 @default.
- W2034129708 cites W2331573337 @default.
- W2034129708 cites W2949623532 @default.
- W2034129708 cites W2951088951 @default.
- W2034129708 cites W2952033705 @default.
- W2034129708 cites W1969316882 @default.
- W2034129708 doi "https://doi.org/10.1016/j.jlumin.2005.06.008" @default.
- W2034129708 hasPublicationYear "2006" @default.
- W2034129708 type Work @default.
- W2034129708 sameAs 2034129708 @default.
- W2034129708 citedByCount "8" @default.
- W2034129708 countsByYear W20341297082012 @default.
- W2034129708 countsByYear W20341297082013 @default.
- W2034129708 countsByYear W20341297082014 @default.
- W2034129708 countsByYear W20341297082018 @default.
- W2034129708 crossrefType "journal-article" @default.
- W2034129708 hasAuthorship W2034129708A5010071100 @default.
- W2034129708 hasConcept C113196181 @default.
- W2034129708 hasConcept C118629725 @default.
- W2034129708 hasConcept C121332964 @default.
- W2034129708 hasConcept C1276947 @default.
- W2034129708 hasConcept C145148216 @default.
- W2034129708 hasConcept C178790620 @default.
- W2034129708 hasConcept C181500209 @default.
- W2034129708 hasConcept C184779094 @default.
- W2034129708 hasConcept C185592680 @default.
- W2034129708 hasConcept C2776568683 @default.
- W2034129708 hasConcept C2778484023 @default.
- W2034129708 hasConcept C30095370 @default.
- W2034129708 hasConcept C32909587 @default.
- W2034129708 hasConcept C33062035 @default.
- W2034129708 hasConcept C4839761 @default.
- W2034129708 hasConcept C62520636 @default.
- W2034129708 hasConcept C66009135 @default.
- W2034129708 hasConcept C69523127 @default.
- W2034129708 hasConcept C71240020 @default.
- W2034129708 hasConcept C75473681 @default.
- W2034129708 hasConcept C91881484 @default.
- W2034129708 hasConcept C96141758 @default.
- W2034129708 hasConceptScore W2034129708C113196181 @default.
- W2034129708 hasConceptScore W2034129708C118629725 @default.
- W2034129708 hasConceptScore W2034129708C121332964 @default.
- W2034129708 hasConceptScore W2034129708C1276947 @default.
- W2034129708 hasConceptScore W2034129708C145148216 @default.
- W2034129708 hasConceptScore W2034129708C178790620 @default.
- W2034129708 hasConceptScore W2034129708C181500209 @default.
- W2034129708 hasConceptScore W2034129708C184779094 @default.
- W2034129708 hasConceptScore W2034129708C185592680 @default.
- W2034129708 hasConceptScore W2034129708C2776568683 @default.
- W2034129708 hasConceptScore W2034129708C2778484023 @default.
- W2034129708 hasConceptScore W2034129708C30095370 @default.
- W2034129708 hasConceptScore W2034129708C32909587 @default.