Matches in SemOpenAlex for { <https://semopenalex.org/work/W2059575585> ?p ?o ?g. }
Showing items 1 to 97 of
97
with 100 items per page.
- W2059575585 endingPage "232" @default.
- W2059575585 startingPage "225" @default.
- W2059575585 abstract "Abstract Liquid crystals are known to possess large electronic optical non-linearities. Transient photoinduced absorption is not commonly applied to liquid crystals, but it is a powerful technique by which to examine the excited-state absorption (ESA) and hence the non-linear absorption of molecular systems. We show that measurements of this kind can give an insight into the dominant mechanisms of picosecond non-linear optical response in liquid crystals, and together with semi-empirical quantum chemical calculations appropriate assignments of the absorptions can be made. In particular, we report measurements of the transient ESA of the liquid crystal CB15 [4-(2-methylbutyl)-4-cyanobiphenyl] in its isotropic phase using femtosecond pump-probe spectroscopy in the wavelength range from 400 to 1000 nm. By pumping directly into the first excited state (S1) we identify at least four transient ESAs which contribute to the non-linear response up to a time of 1 ns after excitation. These features show a linear dependence with pump intensity. There also exists weak two-photon absorption (TPA) into S1 at 650 nm, giving a similar ESA. Furthermore, we show that a semi-empirical quantum-chemical treatment of a single molecular unit of CB15 using the AMI Hamiltonian gives good agreement with the observed spectra, and implies that the dominant ESA in the picosecond regime can be attributed principally to singlet-singlet transitions from monomer units; but there is also a possible contribution to the ESAs by excimer absorption. On the time scale of our experiment we see no evidence of triplet-triplet absorptions, and we have also measured a fluorescence quantum yield of 20%." @default.
- W2059575585 created "2016-06-24" @default.
- W2059575585 creator A5003940602 @default.
- W2059575585 creator A5015799195 @default.
- W2059575585 creator A5030274710 @default.
- W2059575585 creator A5056608282 @default.
- W2059575585 creator A5071292881 @default.
- W2059575585 date "1996-08-01" @default.
- W2059575585 modified "2023-09-25" @default.
- W2059575585 title "Transient excited-state absorption of the liquid crystal CB15 [4-(2-methylbutyl)-4-cyanobiphenyl] in its isotropic phase" @default.
- W2059575585 cites W1603525573 @default.
- W2059575585 cites W1976812457 @default.
- W2059575585 cites W1991086381 @default.
- W2059575585 cites W1995795665 @default.
- W2059575585 cites W2004624587 @default.
- W2059575585 cites W2005222477 @default.
- W2059575585 cites W2005647711 @default.
- W2059575585 cites W2014222388 @default.
- W2059575585 cites W2020608869 @default.
- W2059575585 cites W2031187739 @default.
- W2059575585 cites W2031838423 @default.
- W2059575585 cites W2068209308 @default.
- W2059575585 cites W2077973224 @default.
- W2059575585 cites W2080643173 @default.
- W2059575585 cites W2085413173 @default.
- W2059575585 cites W2127336290 @default.
- W2059575585 doi "https://doi.org/10.1080/02678299608032827" @default.
- W2059575585 hasPublicationYear "1996" @default.
- W2059575585 type Work @default.
- W2059575585 sameAs 2059575585 @default.
- W2059575585 citedByCount "3" @default.
- W2059575585 countsByYear W20595755852019 @default.
- W2059575585 crossrefType "journal-article" @default.
- W2059575585 hasAuthorship W2059575585A5003940602 @default.
- W2059575585 hasAuthorship W2059575585A5015799195 @default.
- W2059575585 hasAuthorship W2059575585A5030274710 @default.
- W2059575585 hasAuthorship W2059575585A5056608282 @default.
- W2059575585 hasAuthorship W2059575585A5071292881 @default.
- W2059575585 hasConcept C119824511 @default.
- W2059575585 hasConcept C120665830 @default.
- W2059575585 hasConcept C121332964 @default.
- W2059575585 hasConcept C125287762 @default.
- W2059575585 hasConcept C13274807 @default.
- W2059575585 hasConcept C159985019 @default.
- W2059575585 hasConcept C167735695 @default.
- W2059575585 hasConcept C181500209 @default.
- W2059575585 hasConcept C184779094 @default.
- W2059575585 hasConcept C185592680 @default.
- W2059575585 hasConcept C192562407 @default.
- W2059575585 hasConcept C32891209 @default.
- W2059575585 hasConcept C33062035 @default.
- W2059575585 hasConcept C41999313 @default.
- W2059575585 hasConcept C49040817 @default.
- W2059575585 hasConcept C520434653 @default.
- W2059575585 hasConcept C55005982 @default.
- W2059575585 hasConcept C62520636 @default.
- W2059575585 hasConcept C95503338 @default.
- W2059575585 hasConceptScore W2059575585C119824511 @default.
- W2059575585 hasConceptScore W2059575585C120665830 @default.
- W2059575585 hasConceptScore W2059575585C121332964 @default.
- W2059575585 hasConceptScore W2059575585C125287762 @default.
- W2059575585 hasConceptScore W2059575585C13274807 @default.
- W2059575585 hasConceptScore W2059575585C159985019 @default.
- W2059575585 hasConceptScore W2059575585C167735695 @default.
- W2059575585 hasConceptScore W2059575585C181500209 @default.
- W2059575585 hasConceptScore W2059575585C184779094 @default.
- W2059575585 hasConceptScore W2059575585C185592680 @default.
- W2059575585 hasConceptScore W2059575585C192562407 @default.
- W2059575585 hasConceptScore W2059575585C32891209 @default.
- W2059575585 hasConceptScore W2059575585C33062035 @default.
- W2059575585 hasConceptScore W2059575585C41999313 @default.
- W2059575585 hasConceptScore W2059575585C49040817 @default.
- W2059575585 hasConceptScore W2059575585C520434653 @default.
- W2059575585 hasConceptScore W2059575585C55005982 @default.
- W2059575585 hasConceptScore W2059575585C62520636 @default.
- W2059575585 hasConceptScore W2059575585C95503338 @default.
- W2059575585 hasIssue "2" @default.
- W2059575585 hasLocation W20595755851 @default.
- W2059575585 hasOpenAccess W2059575585 @default.
- W2059575585 hasPrimaryLocation W20595755851 @default.
- W2059575585 hasRelatedWork W1542543115 @default.
- W2059575585 hasRelatedWork W1642072779 @default.
- W2059575585 hasRelatedWork W1968458556 @default.
- W2059575585 hasRelatedWork W2027701992 @default.
- W2059575585 hasRelatedWork W2032951767 @default.
- W2059575585 hasRelatedWork W2096615074 @default.
- W2059575585 hasRelatedWork W2131941469 @default.
- W2059575585 hasRelatedWork W3006733660 @default.
- W2059575585 hasRelatedWork W2146346672 @default.
- W2059575585 hasRelatedWork W279063571 @default.
- W2059575585 hasVolume "21" @default.
- W2059575585 isParatext "false" @default.
- W2059575585 isRetracted "false" @default.
- W2059575585 magId "2059575585" @default.
- W2059575585 workType "article" @default.