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231226s2023 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202211143
|2 doi
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|a pubmed24n1170.xml
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|a (NLM)36608160
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|a DE-627
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|e rakwb
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|a eng
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| 100 |
1 |
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|a Zhan, Yuanyuan
|e verfasserin
|4 aut
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|a Perspiring Soft Robotics Skin Constituted by Dynamic Polarity-Switching Porous Liquid Crystal Membrane
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|c 2023
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|a Text
|b txt
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 23.03.2023
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|a Date Revised 23.03.2023
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2023 The Authors. Advanced Materials published by Wiley-VCH GmbH.
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|a Secretion of functional fluids is essential for affecting surface properties in ecosystems. The existing polymer membranes that mimic human skin functions are limited to secreting, either apolar or polar, liquid. However, the development of membranes that grant exchange liquid with different polarities remains a grand challenge. This process is prohibited by the mismatch of the polarity between the carrier polymer and the loaded liquid. To conquer this limitation, an innovative strategy is reported to dynamically switch the polarity of the porous membrane, thereby empowering the exchange of apolar liquid with polar liquid and vice versa. This approach incorporates a benzoic acid derivative into the original apolar polymer network. The benzoic acid dimerizes and forms hydrogen bonds, which supports the molecular alignment, but can be broken into the ionic state when subjected to alkaline treatment, changing the polarity of themembrane. Consequently, the apolar liquid can be replaced with a more polar one. This polar liquid is ejected upon safe-dose UV illumination from the membrane. Reabsorption occurs on demand by illumination of visible light or when left in contact with the membrane, spontaneously in the dark. Based on this, the consumed membrane is replenished with the same or different exchanging liquid
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|a Journal Article
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|a light response
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|a liquid crystal polymer networks
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|a liquid secretion
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|a polarity switch
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|a porous membranes
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|a Broer, Dirk J
|e verfasserin
|4 aut
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|a Liu, Danqing
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 35(2023), 12 vom: 15. März, Seite e2211143
|w (DE-627)NLM098206397
|x 1521-4095
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|g volume:35
|g year:2023
|g number:12
|g day:15
|g month:03
|g pages:e2211143
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| 856 |
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|u http://dx.doi.org/10.1002/adma.202211143
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