Regular Arrays of Rod-Shaped Molecular Photoswitches: Synthesis, Preparation, Characterization, and Selective Photoswitching within Mono- and Bilayer Systems.

Autor: Severa L; Institute of Organic Chemistry and Biochemistry of the, Czech Academy of Sciences, Flemingovo nám. 2, 160 00, Prague, Czech Republic., Santos Hurtado C; Institute of Organic Chemistry and Biochemistry of the, Czech Academy of Sciences, Flemingovo nám. 2, 160 00, Prague, Czech Republic., Rončević I; Institute of Organic Chemistry and Biochemistry of the, Czech Academy of Sciences, Flemingovo nám. 2, 160 00, Prague, Czech Republic., Mašát M; Institute of Organic Chemistry and Biochemistry of the, Czech Academy of Sciences, Flemingovo nám. 2, 160 00, Prague, Czech Republic., Bastien G; Institute of Organic Chemistry and Biochemistry of the, Czech Academy of Sciences, Flemingovo nám. 2, 160 00, Prague, Czech Republic., Štoček JR; Institute of Organic Chemistry and Biochemistry of the, Czech Academy of Sciences, Flemingovo nám. 2, 160 00, Prague, Czech Republic., Dračínský M; Institute of Organic Chemistry and Biochemistry of the, Czech Academy of Sciences, Flemingovo nám. 2, 160 00, Prague, Czech Republic., Houska V; Institute of Organic Chemistry and Biochemistry of the, Czech Academy of Sciences, Flemingovo nám. 2, 160 00, Prague, Czech Republic., Kaletová E; Institute of Organic Chemistry and Biochemistry of the, Czech Academy of Sciences, Flemingovo nám. 2, 160 00, Prague, Czech Republic., Garza DJ; Department of Chemistry and Biochemistry, Ohio University, Athens, OH 45701, USA., Císařová I; Department of Inorganic Chemistry, Faculty of Science, Charles University Prague, Hlavova 2030, 128 40, Prague 2, Czech Republic., Cimatu KLA; Department of Chemistry and Biochemistry, Ohio University, Athens, OH 45701, USA., Bastl Z; J. Heyrovský Institute of Physical Chemistry of the, Czech Academy of Sciences, Dolejškova 2155/3, 182 23, Prague 8, Czech Republic., Kaleta J; Institute of Organic Chemistry and Biochemistry of the, Czech Academy of Sciences, Flemingovo nám. 2, 160 00, Prague, Czech Republic.
Jazyk: angličtina
Zdroj: Chemistry (Weinheim an der Bergstrasse, Germany) [Chemistry] 2024 Jan 16; Vol. 30 (4), pp. e202302828. Date of Electronic Publication: 2023 Nov 14.
DOI: 10.1002/chem.202302828
Abstrakt: We assembled photoresponsive mono- and bilayer systems with well-defined properties from rod-shaped molecules equipped with different photoswitches. Using properly chosen chromophores (diarylethene-based switch and unidirectional light-driven molecular motor), we then selectively targeted layers made of the same types of photoswitches using appropriate monochromatic light. UV-vis analysis confirmed smooth and unrestricted photoisomerization. To achieve this, we synthesized a new class of triptycene-based molecular pedestals adept at forming sturdy Langmuir-Blodgett films on a water-air interface. The films were smoothly transferred to gold and quartz surfaces. Repeated deposition afforded bilayer systems: one layer containing diarylethene-based photoswitches and the other a unidirectional light-driven molecular motor. Structural analysis of both mono- and bilayer systems revealed the molecules to be tilted with carboxylic functions pointing to the surface. At least two different polymorphs differing in monolayer thickness and tilt angle (~40° and ~60°) were identified on the gold surface.
(© 2023 The Authors. Chemistry - A European Journal published by Wiley-VCH GmbH.)
Databáze: MEDLINE
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