FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2103704924> ?p ?o ?g. }

• W2103704924 endingPage "4977" @default.
• W2103704924 startingPage "4971" @default.
• W2103704924 abstract "We present a protocol to determine the angular orientation of surface-confined discotic molecules in ordered thin-film assemblies through a combination of polarized reflection absorption infrared spectroscopy (RAIRS) and polarized transmission infrared (IR) spectroscopy. We focus here on the determination of the orientation of side-chain-modified disk-like phthalocyanine molecules that self-organize to form parallel columnar aggregates in Langmuir−Blodgett (LB) films. This work complements and follows on work published previously (Langmuir 2005, 21, 360−368) where we used the visible absorbance dichroism in similar assemblies to determine the tilt angles of discotic molecules. The approach described here is applicable to all disk-like molecules that possess distinct in-plane or out-of-plane IR transitions. Molecular orientation is determined by comparison of absorbance intensities that are measured using (i) a RAIRS spectrum of the thin-film material on a gold surface, (ii) transmission spectra taken at two different polarizations of the thin-film material on an IR-transparent silicon substrate, and (iii) a transmission IR spectrum of an isotropic sample. We chose two distinct IR transitions of this molecule (a C−O−C “in-plane” stretch, νC-O-C, and a C−H out-of-plane bend, δC-H), which we initially assume are orthogonal to each other. The νC-O-C transition is modeled as an in-plane circular dipole, and the δC-H transition is modeled as a linear out-of-plane dipole. Formalisms are described that allow the determination of two independent values for order parameters within the thin film using the dichroism in these transitions in all three IR spectra, assuming that the microstructure of these thin films is the same on both the gold and silicon substrates. The spectra from the δC-H transition appear to best describe the orientation of these molecules within the molecular assembly, these IR results agreeing best with earlier visible absorbance and X-ray diffraction studies. The preferential alignment of the δC-H transition is parallel to the substrate, arising from Pc molecules that are nearly upright, edge-on to the substrate plane. The approach described here provides a means of complete description of the tilt angles of the monomer building blocks in any discotic assembly in thin-film formats, where distinct in-plane and out-of-plane optical transitions are available." @default.
• W2103704924 created "2016-06-24" @default.
• W2103704924 creator A5051725895 @default.
• W2103704924 creator A5054056532 @default.
• W2103704924 creator A5054899604 @default.
• W2103704924 creator A5078884026 @default.
• W2103704924 date "2008-03-08" @default.
• W2103704924 modified "2023-10-01" @default.
• W2103704924 title "Characterization of the Angular Orientation Distribution of Discotic Molecules in Thin-Film Assemblies: Combinations of Polarized Transmission and Reflection−Absorption Infrared Spectroscopies" @default.
• W2103704924 cites W1966408256 @default.
• W2103704924 cites W1969600394 @default.
• W2103704924 cites W1976849993 @default.
• W2103704924 cites W1980224299 @default.
• W2103704924 cites W1984987590 @default.
• W2103704924 cites W1989060531 @default.
• W2103704924 cites W1993388695 @default.
• W2103704924 cites W2006410572 @default.
• W2103704924 cites W2008556037 @default.
• W2103704924 cites W2009008316 @default.
• W2103704924 cites W2009834150 @default.
• W2103704924 cites W2013011393 @default.
• W2103704924 cites W2016986199 @default.
• W2103704924 cites W2024420769 @default.
• W2103704924 cites W2032165355 @default.
• W2103704924 cites W2033829343 @default.
• W2103704924 cites W2042670971 @default.
• W2103704924 cites W2047828980 @default.
• W2103704924 cites W2052565560 @default.
• W2103704924 cites W2052787402 @default.
• W2103704924 cites W2057026947 @default.
• W2103704924 cites W2057847812 @default.
• W2103704924 cites W2058957873 @default.
• W2103704924 cites W2077607152 @default.
• W2103704924 cites W2078944009 @default.
• W2103704924 cites W2089069105 @default.
• W2103704924 cites W2089917395 @default.
• W2103704924 cites W2090470474 @default.
• W2103704924 cites W2106551407 @default.
• W2103704924 cites W2122614966 @default.
• W2103704924 cites W2128850923 @default.
• W2103704924 cites W2162069599 @default.
• W2103704924 doi "https://doi.org/10.1021/jp077274u" @default.
• W2103704924 hasPublicationYear "2008" @default.
• W2103704924 type Work @default.
• W2103704924 sameAs 2103704924 @default.
• W2103704924 citedByCount "7" @default.
• W2103704924 countsByYear W21037049242012 @default.
• W2103704924 crossrefType "journal-article" @default.
• W2103704924 hasAuthorship W2103704924A5051725895 @default.
• W2103704924 hasAuthorship W2103704924A5054056532 @default.
• W2103704924 hasAuthorship W2103704924A5054899604 @default.
• W2103704924 hasAuthorship W2103704924A5078884026 @default.
• W2103704924 hasConcept C113196181 @default.
• W2103704924 hasConcept C119824511 @default.
• W2103704924 hasConcept C120665830 @default.
• W2103704924 hasConcept C121332964 @default.
• W2103704924 hasConcept C133571119 @default.
• W2103704924 hasConcept C146593782 @default.
• W2103704924 hasConcept C147498150 @default.
• W2103704924 hasConcept C153642686 @default.
• W2103704924 hasConcept C158355884 @default.
• W2103704924 hasConcept C171250308 @default.
• W2103704924 hasConcept C178790620 @default.
• W2103704924 hasConcept C185592680 @default.
• W2103704924 hasConcept C19067145 @default.
• W2103704924 hasConcept C192562407 @default.
• W2103704924 hasConcept C32891209 @default.
• W2103704924 hasConcept C32909587 @default.
• W2103704924 hasConcept C41999313 @default.
• W2103704924 hasConcept C62520636 @default.
• W2103704924 hasConcept C8010536 @default.
• W2103704924 hasConcept C98015330 @default.
• W2103704924 hasConceptScore W2103704924C113196181 @default.
• W2103704924 hasConceptScore W2103704924C119824511 @default.
• W2103704924 hasConceptScore W2103704924C120665830 @default.
• W2103704924 hasConceptScore W2103704924C121332964 @default.
• W2103704924 hasConceptScore W2103704924C133571119 @default.
• W2103704924 hasConceptScore W2103704924C146593782 @default.
• W2103704924 hasConceptScore W2103704924C147498150 @default.
• W2103704924 hasConceptScore W2103704924C153642686 @default.
• W2103704924 hasConceptScore W2103704924C158355884 @default.
• W2103704924 hasConceptScore W2103704924C171250308 @default.
• W2103704924 hasConceptScore W2103704924C178790620 @default.
• W2103704924 hasConceptScore W2103704924C185592680 @default.
• W2103704924 hasConceptScore W2103704924C19067145 @default.
• W2103704924 hasConceptScore W2103704924C192562407 @default.
• W2103704924 hasConceptScore W2103704924C32891209 @default.
• W2103704924 hasConceptScore W2103704924C32909587 @default.
• W2103704924 hasConceptScore W2103704924C41999313 @default.
• W2103704924 hasConceptScore W2103704924C62520636 @default.
• W2103704924 hasConceptScore W2103704924C8010536 @default.
• W2103704924 hasConceptScore W2103704924C98015330 @default.
• W2103704924 hasIssue "13" @default.
• W2103704924 hasLocation W21037049241 @default.
• W2103704924 hasOpenAccess W2103704924 @default.
• W2103704924 hasPrimaryLocation W21037049241 @default.
• W2103704924 hasRelatedWork W1180232882 @default.
• W2103704924 hasRelatedWork W1592184271 @default.

• next