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231225s2021 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.1c01442
|2 doi
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|a pubmed25n1096.xml
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|a (DE-627)NLM32913955X
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|a (NLM)34369796
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|a DE-627
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|e rakwb
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|a eng
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|a Lee, Daniel C
|e verfasserin
|4 aut
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|a Dual-Stimuli Responsive Single-Chain Polymer Folding via Intrachain Complexation of Tetramethoxyazobenzene and β-Cyclodextrin
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|c 2021
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 26.08.2021
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|a Date Revised 26.08.2021
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a We synthesize and characterize a triblock polymer with asymmetric tetramethoxyazobenzene (TMAB) and β-cyclodextrin functionalization, taking advantage of the well-characterized azobenzene derivative-cyclodextrin inclusion complex to promote photoresponsive, self-contained folding of the polymer in an aqueous system. We use 1H NMR to show the reversibility of (E)-to-(Z) and (Z)-to-(E) TMAB photoisomerization, and evaluate the thermal stability of (Z)-TMAB and the comparatively rapid acid-catalyzed thermal (Z)-to-(E) isomerization. Important for its potential use as a functional material, we show the photoisomerization cyclability of the polymeric TMAB chromophore and calculate isomerization quantum yields by extinction spectroscopy. To verify self-inclusion of the polymeric TMAB and cyclodextrin, we use two-dimensional 1H NOESY NMR data to show proximity of TMAB and cyclodextrin in the (E)-state only; however, (Z)-TMAB is not locally correlated with cyclodextrin. Finally, the observed decrease in photoisomerization quantum yield for the dual-functionalized polymer compared to the isolated chromophore in an aqueous solution confirms TMAB and β-cyclodextrin not only are in proximity to one another, but also form the inclusion complex
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|a Journal Article
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|a Research Support, U.S. Gov't, Non-P.H.S.
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|a Cyclodextrins
|2 NLM
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|a Polymers
|2 NLM
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|a Stimuli Responsive Polymers
|2 NLM
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|a beta-Cyclodextrins
|2 NLM
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|a Guye, Kathryn N
|e verfasserin
|4 aut
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|a Paranji, Rajan K
|e verfasserin
|4 aut
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|a Lachowski, Kacper
|e verfasserin
|4 aut
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|a Pozzo, Lilo D
|e verfasserin
|4 aut
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|a Ginger, David S
|e verfasserin
|4 aut
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|a Pun, Suzie H
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1985
|g 37(2021), 33 vom: 24. Aug., Seite 10126-10134
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnas
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| 773 |
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|g volume:37
|g year:2021
|g number:33
|g day:24
|g month:08
|g pages:10126-10134
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|u http://dx.doi.org/10.1021/acs.langmuir.1c01442
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