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A supramolecular and liquid crystalline water‐based alignment medium based on azobenzene‐substituted 1,3,5‐benzenetricarboxamides

Knoll, Kevin ; Herold, Dominik ; Hirschmann, Max ; Thiele, Christina M. (2022)
A supramolecular and liquid crystalline water‐based alignment medium based on azobenzene‐substituted 1,3,5‐benzenetricarboxamides.
In: Magnetic Resonance in Chemistry, 2022, 60 (6)
doi: 10.26083/tuprints-00021535
Article, Secondary publication, Publisher's Version

Abstract

A supramolecular, lyotropic liquid crystalline alignment medium based on an azobenzene‐containing 1,3,5‐benzenetricarboxamide (BTA) building block is described and investigated. As we demonstrate, this water‐based system is suitable for the investigation of various water‐soluble analytes and allows for a scaling of alignment strength through variation of temperature. Additionally, alignment is shown to reversibly collapse above a certain temperature, yielding an isotropic solution. This collapse allows for isotropic reference measurements, which are typically needed in addition to those in an anisotropic environment, to be performed using the same sample just by varying the temperature. The medium described thus provides easy access to anisotropic NMR observables and simplifies structure elucidation techniques based thereon.

Item Type: Article
Erschienen: 2022
Creators: Knoll, Kevin ; Herold, Dominik ; Hirschmann, Max ; Thiele, Christina M.
Type of entry: Secondary publication
Title: A supramolecular and liquid crystalline water‐based alignment medium based on azobenzene‐substituted 1,3,5‐benzenetricarboxamides
Language: English
Date: 2022
Place of Publication: Darmstadt
Year of primary publication: 2022
Publisher: John Wiley & Sons
Journal or Publication Title: Magnetic Resonance in Chemistry
Volume of the journal: 60
Issue Number: 6
DOI: 10.26083/tuprints-00021535
URL / URN: https://tuprints.ulb.tu-darmstadt.de/21535
Corresponding Links:
Origin: Secondary publication DeepGreen
Abstract:

A supramolecular, lyotropic liquid crystalline alignment medium based on an azobenzene‐containing 1,3,5‐benzenetricarboxamide (BTA) building block is described and investigated. As we demonstrate, this water‐based system is suitable for the investigation of various water‐soluble analytes and allows for a scaling of alignment strength through variation of temperature. Additionally, alignment is shown to reversibly collapse above a certain temperature, yielding an isotropic solution. This collapse allows for isotropic reference measurements, which are typically needed in addition to those in an anisotropic environment, to be performed using the same sample just by varying the temperature. The medium described thus provides easy access to anisotropic NMR observables and simplifies structure elucidation techniques based thereon.

Uncontrolled Keywords: ²H, alignment media, BTAs, lyotropic liquid crystals, NMR, RDCs, supramolecular chemistry
Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-215358
Classification DDC: 500 Science and mathematics > 540 Chemistry
Divisions: 07 Department of Chemistry
07 Department of Chemistry > Clemens-Schöpf-Institut > Organ Chemistry
Date Deposited: 01 Jul 2022 11:54
Last Modified: 04 Jul 2022 05:20
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