Journal
LANGMUIR
Volume 31, Issue 25, Pages 7122-7128Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.langmuir.5b01585
Keywords
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Funding
- National Science Foundation of China [51173105, 51273111]
- National Basic Research Program of China (973 Program) [2012CB933803]
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Recently, logic gates based on multiresponsive hydrogel Systems are attractive because of their potential biological applications.,A quite simple supramolecular hydrogel co-assembled from phenylalanine-based amphiphile (LPP2) and bis(pyridinyl) derivative (AP) is constructed. The co-assembled hydrogel exhibited a macroscopic gel-sol transition in response to four distinct input Stimuli: temperature, acid, base, and light. A set of techniques including microscopic, spectroscopic, and theological measurements demonstrate this performance and confirm that the hydrogel is formed through intermolecular hydrogen bonds between amide/pyridine moieties and carbonyl groups. On the basis Of its mutiple-stimulus responsiveness, installing gel-based supramolecular logic gates (OR and XOR) is achieved. It may promote the possibility to develop smart soft materials, such as gels, that can be used as tools releasing a drug quantitatively by rational design and fine control of the external stimuli.
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