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A Photoinduced Reversible Phase Transition in a Dipeptide Supramolecular Assembly
Abstract
Ein nichtkovalent eingebetteter , langlebiger Photosäuregenerator kann einen reversiblen Phasenübergang in supramolekularen Dipeptidaggregaten modulieren. Über einen räumlich kontrollierten isothermen Gel‐Sol‐Übergang hinaus lassen sich auf diese Weise spontan Muster erzeugen.
Abstract
Tunable supramolecular assembly has found various applications in biomedicine, molecular catalysis, optoelectronics, and nanofabrication. Unlike traditional covalent conjugation, non‐covalent introduction of a photoswitchable moiety enables reversible photomodulation of non‐photosensitive dipeptide supramolecular assembly. Under light illumination, a long‐lived photoacid generator releases a proton and mediates the dissociation of dipeptide‐based organogel, thereby resulting in sol formation. Under darkness, the photoswitchable moiety entraps a proton, resulting in gel regeneration. Furthermore, accompanying the isothermal recycled gel–sol transition in a spatially controlled manner, renewable patterns are spontaneously fabricated. This new concept of light‐controlled phase transition of amino acid‐based supramolecular assemblies will open up the possibility of wide applications.
Citing Literature
Number of times cited according to CrossRef: 18
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