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Perylene bisimide hydrogels and lyotropic liquid crystals with temperature-responsive color change

Please always quote using this URN: urn:nbn:de:bvb:20-opus-162459
  • The self-assembly of perylene bisimide (PBI) dyes bearing oligo ethylene glycol (OEG) units in water affords responsive functional nanostructures characterized by their lower critical solution temperature (LCST). Tuning of the LCST is realized by a supramolecular approach that relies on two structurally closely related PBI–OEG molecules. The two PBIs socially co-assemble in water and the resulting nanostructures exhibit a single LCST in between the transition temperatures of the aggregates formed by single components. This permits to preciselyThe self-assembly of perylene bisimide (PBI) dyes bearing oligo ethylene glycol (OEG) units in water affords responsive functional nanostructures characterized by their lower critical solution temperature (LCST). Tuning of the LCST is realized by a supramolecular approach that relies on two structurally closely related PBI–OEG molecules. The two PBIs socially co-assemble in water and the resulting nanostructures exhibit a single LCST in between the transition temperatures of the aggregates formed by single components. This permits to precisely tune the transition from a hydrogel to a lyotropic liquid crystal state at temperatures between 26 and 51 °C by adjusting the molar fraction of the two PBIs. Owing to concomitant changes in PBI–PBI interactions this phase transition affords a pronounced color change with “fluorescence-on” response that can be utilized as a smart temperature sensory system.show moreshow less

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Metadaten
Author: Daniel Görl, Bartolome Soberats, Stefanie Herbst, Vladimir Stepanenko, Frank WürthnerORCiD
URN:urn:nbn:de:bvb:20-opus-162459
Document Type:Journal article
Faculties:Fakultät für Chemie und Pharmazie / Institut für Organische Chemie
Language:English
Parent Title (English):Chemical Science
Year of Completion:2016
Volume:7
Issue:11
Pagenumber:6786-6790
Source:Chemical Science, 2016, 7, 6786–6790. DOI: 10.1039/c6sc02249a
DOI:https://doi.org/10.1039/c6sc02249a
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 54 Chemie / 540 Chemie und zugeordnete Wissenschaften
Tag:perylene bisimide hydrogels
Release Date:2018/07/13
Licence (German):License LogoCC BY: Creative-Commons-Lizenz: Namensnennung