Počet záznamů: 1
Synthesis of Triptycene-Based Molecular Rotors for Langmuir-Blodgett Monolayers
- 1.
SYSNO ASEP 0451368 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Synthesis of Triptycene-Based Molecular Rotors for Langmuir-Blodgett Monolayers Tvůrce(i) Kaleta, Jiří (UOCHB-X) RID, ORCID
Kaletová, Eva (UOCHB-X) RID
Císařová, I. (CZ)
Teat, S. J. (US)
Michl, Josef (UOCHB-X) RID, ORCIDCelkový počet autorů 5 Zdroj.dok. Journal of Organic Chemistry. - : American Chemical Society - ISSN 0022-3263
Roč. 80, č. 20 (2015), s. 10134-10150Poč.str. 17 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova surface inclusion ; films ; arrays Vědní obor RIV CC - Organická chemie Institucionální podpora UOCHB-X - RVO:61388963 UT WOS 000363224600035 EID SCOPUS 84944937952 DOI 10.1021/acs.joc.5b01753 Anotace We describe syntheses of six triptycene-containing molecular rotors with several single-crystal X-ray diffraction analyses. These rod-shaped molecules carrying an axial rotator are designed to interleave on an aqueous surface into Langmuir-Blodgett (LB) monolayers containing a two-dimensional trigonal array of dipoles rotatable about an axis normal to the surface. Monolayer formation was verified with the simplest of the rotor structures. On an aqueous subphase containing divalent (c)ations (Mg2+, Ca2+, Zn2+, Sr2+, or Cd2+), the LB isotherm yielded an area of 53 +/- 3 angstrom(2)/molecule (monolayer of type A), compatible with the anticipated triangular packing of axes normal to the surface. On pure water, the area is 30 +/- 3 angstrom(2)/molecule, and it is proposed that in this monolayer (type B), the molecular axes are tilted by 40-45 degrees to a structure similar to those observed in single crystals of related triptycenes. After transfer to a gold surface, ellipsometry and PM IRRAS yield tilt angles of 29 +/- 4 degrees (monolayers of type A) and 38 +/- 4 degrees (type B). A full-scale examination of monolayers from all the rotors on a subphase and after transfer is underway and will be reported separately. Pracoviště Ústav organické chemie a biochemie Kontakt asep@uochb.cas.cz ; Kateřina Šperková, Tel.: 232 002 584 ; Jana Procházková, Tel.: 220 183 418 Rok sběru 2016
Počet záznamů: 1