Matches in SemOpenAlex for { <https://semopenalex.org/work/W1859017218> ?p ?o ?g. }
Showing items 1 to 71 of
71
with 100 items per page.
- W1859017218 endingPage "2375" @default.
- W1859017218 startingPage "2367" @default.
- W1859017218 abstract "A novel photoresponsive polymer containing organic chromophores which possess thermal stability as well as substantial and reversible responsiveness upon external photostimulus has been developed. trans-2{4-[2-(Dimethylcarbamoyl)vinyl]phenoxy}ethyl methacrylate (1) was synthesized and copolymerized by free-radical methods with methyl methacrylate giving a copolymer poly[(methyl methacrylate)-co-1] (poly(MMA-co-1)) (2) with cinnamamide moiety chromophores randomly attached as side groups. Photoisomerization and ultraviolet absorbance were used to examine the photostationary states and solubility changes upon photoirradiation. Poly[(methyl methacrylate)-co-1] (90,7 : 9,3 mol%) with 9,3 mol-% cinnamamide content has better solubility in a polar solvent such as acetonitrile (theta temperature ΘPMMA = 30°C) than in a nonpolar solvent such as carbon tetrachloride (ΘPMMA = 27°C). Photoisomerization of the trans-cinnamamide to cis-cinnamamide units significantly shifts the cloud point of poly[(methyl methacrylate)-co-1] (90,7 :9,3 mol-%) in carbon tetrachloride; this cloud point shift is reversible by photoisomerization back to the trans state. However, in a hydrogen-bonding solvent such as tert-butyl alcohol, while photoirradiation of poly[(methyl methacrylate)-co-1] (90,7 :9,3 mol%) yields a significant shift in cloud point, this is not reversible by photoirradiation as hydrogen-bond formation between the tertiary amide and the hydroxylic solvent reduces the isomerization efficiency. Fatigue of the photoreversibility of the copolymer, which is not present in dilute solutions of the cinnamamide chromophore, is noted." @default.
- W1859017218 created "2016-06-24" @default.
- W1859017218 creator A5005755652 @default.
- W1859017218 creator A5055615498 @default.
- W1859017218 creator A5074692768 @default.
- W1859017218 creator A5085196462 @default.
- W1859017218 date "1990-10-01" @default.
- W1859017218 modified "2023-09-27" @default.
- W1859017218 doi "https://doi.org/10.1002/macp.1990.021911014" @default.
- W1859017218 hasPublicationYear "1990" @default.
- W1859017218 type Work @default.
- W1859017218 sameAs 1859017218 @default.
- W1859017218 citedByCount "1" @default.
- W1859017218 crossrefType "journal-article" @default.
- W1859017218 hasAuthorship W1859017218A5005755652 @default.
- W1859017218 hasAuthorship W1859017218A5055615498 @default.
- W1859017218 hasAuthorship W1859017218A5074692768 @default.
- W1859017218 hasAuthorship W1859017218A5085196462 @default.
- W1859017218 hasConcept C126661725 @default.
- W1859017218 hasConcept C132050475 @default.
- W1859017218 hasConcept C155574463 @default.
- W1859017218 hasConcept C15920480 @default.
- W1859017218 hasConcept C161790260 @default.
- W1859017218 hasConcept C178790620 @default.
- W1859017218 hasConcept C185592680 @default.
- W1859017218 hasConcept C188027245 @default.
- W1859017218 hasConcept C192468462 @default.
- W1859017218 hasConcept C2776568683 @default.
- W1859017218 hasConcept C2777935641 @default.
- W1859017218 hasConcept C2778150588 @default.
- W1859017218 hasConcept C2780471494 @default.
- W1859017218 hasConcept C521977710 @default.
- W1859017218 hasConcept C75473681 @default.
- W1859017218 hasConcept C85311670 @default.
- W1859017218 hasConceptScore W1859017218C126661725 @default.
- W1859017218 hasConceptScore W1859017218C132050475 @default.
- W1859017218 hasConceptScore W1859017218C155574463 @default.
- W1859017218 hasConceptScore W1859017218C15920480 @default.
- W1859017218 hasConceptScore W1859017218C161790260 @default.
- W1859017218 hasConceptScore W1859017218C178790620 @default.
- W1859017218 hasConceptScore W1859017218C185592680 @default.
- W1859017218 hasConceptScore W1859017218C188027245 @default.
- W1859017218 hasConceptScore W1859017218C192468462 @default.
- W1859017218 hasConceptScore W1859017218C2776568683 @default.
- W1859017218 hasConceptScore W1859017218C2777935641 @default.
- W1859017218 hasConceptScore W1859017218C2778150588 @default.
- W1859017218 hasConceptScore W1859017218C2780471494 @default.
- W1859017218 hasConceptScore W1859017218C521977710 @default.
- W1859017218 hasConceptScore W1859017218C75473681 @default.
- W1859017218 hasConceptScore W1859017218C85311670 @default.
- W1859017218 hasIssue "10" @default.
- W1859017218 hasLocation W18590172181 @default.
- W1859017218 hasOpenAccess W1859017218 @default.
- W1859017218 hasPrimaryLocation W18590172181 @default.
- W1859017218 hasRelatedWork W1981310346 @default.
- W1859017218 hasRelatedWork W2009857984 @default.
- W1859017218 hasRelatedWork W2015295444 @default.
- W1859017218 hasRelatedWork W2018229083 @default.
- W1859017218 hasRelatedWork W2018593526 @default.
- W1859017218 hasRelatedWork W2028158521 @default.
- W1859017218 hasRelatedWork W2088983047 @default.
- W1859017218 hasRelatedWork W2150359918 @default.
- W1859017218 hasRelatedWork W2996875905 @default.
- W1859017218 hasRelatedWork W3208926134 @default.
- W1859017218 hasVolume "191" @default.
- W1859017218 isParatext "false" @default.
- W1859017218 isRetracted "false" @default.
- W1859017218 magId "1859017218" @default.
- W1859017218 workType "article" @default.