Articles with "binaphthyl" as a keyword



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Tunable properties based on regioselectivity of 1,2,3-triazole units in axially chiral 2,2′-linked 1,1′-binaphthyl-based copolymers for ions and acid responsiveness

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Published in 2018 at "European Polymer Journal"

DOI: 10.1016/j.eurpolymj.2018.08.030

Abstract: Abstract The synthesis and optical studies of a new chiral binaphthyl-based polymeric sensor are described herein. The polymers were prepared using the copper-catalyzed azide–alkyne cycloaddition reaction between fluorene and binaphthyl monomeric units. Resulted polymers differ… read more here.

Keywords: properties based; binaphthyl; tunable properties; binaphthyl based ... See more keywords
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Gas transport property of the binaphthyl-based polyimide membranes

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Published in 2019 at "Polymer"

DOI: 10.1016/j.polymer.2019.121854

Abstract: Abstract There is constant need for improving the performance of gas separation membranes for making the membrane technologies viable for industrial applications. In this work, we introduce an array of novel polyimide (PI) membranes containing… read more here.

Keywords: based polyimide; binaphthyl; binaphthyl based; gas transport ... See more keywords
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Circularly polarized luminescence from open- and closed-style axially chiral amphipathic binaphthyl fluorophores in water

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Published in 2017 at "Tetrahedron"

DOI: 10.1016/j.tet.2017.10.036

Abstract: Abstract Chiral, ionic C 2 -symmetric binaphthyl fluorophores with amphipathic property can emit circularly polarized luminescence (CPL) in the near-UV region when dissolved in either water or methanol. Despite the same axial chirality ( R… read more here.

Keywords: binaphthyl fluorophores; open closed; binaphthyl; water ... See more keywords
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Application of a novel chromophoric reagent, 2,2′-binaphthyl-3,3′-dicarbonyl cyanide, to the absolute configuration determination of chiral secondary alcohols

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Published in 2020 at "Tetrahedron Letters"

DOI: 10.1016/j.tetlet.2020.151984

Abstract: Abstract 2,2′-Binaphthyl-3,3′-dicarbonyl cyanide possessing two reaction sites was designed and synthesized as a new chromophoric reagent for exciton-coupled circular dichroism (ECCD), which is more effective in determination of the absolute stereochemistry of the target chiral… read more here.

Keywords: binaphthyl; dicarbonyl cyanide; chiral secondary; chromophoric reagent ... See more keywords

New enantiopure binaphthyl-cinchona thiosquaramides: synthesis and application for enantioselective organocatalysis

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Published in 2019 at "New Journal of Chemistry"

DOI: 10.1039/c8nj06451b

Abstract: Binaphthyl-cinchona squaramide and thiosquaramide were applied as organocatalysts in three types of asymmetric reactions with excellent yields and enantioselectivities. read more here.

Keywords: cinchona thiosquaramides; binaphthyl; binaphthyl cinchona; new enantiopure ... See more keywords
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Substituent-induced Preservation/Inversion of the Sign of Circularly Polarized Luminescence in Binaphthyl Organic Fluorophores

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Published in 2018 at "Chemistry Letters"

DOI: 10.1246/cl.180300

Abstract: The introduction of aromatic substituents onto the binaphthyl backbone of axially chiral binaphthyl organic fluorophores shifts their circularly polarized luminescence (CPL) wavelengths to higher values and may induce CPL sign inversion. Herein, we succeeded in… read more here.

Keywords: organic fluorophores; binaphthyl; circularly polarized; sign ... See more keywords
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Synthesis, Structure, and Reactivity of Binaphthyl Supported Dihydro[1,6]diazecines

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Published in 2019 at "Molecules"

DOI: 10.3390/molecules24173098

Abstract: A short approach to chiral diaza-olefines from protected 2,2′-diamino-1,1′-binaphthyl is presented. Cis- and trans-olefines can be selectively obtained by twofold N-allylation followed by RCM or by bridging a 2,2′-diamino-1,1′-binaphthyl precursor with trans-1,4-dibromo-2-butene. Deprotection afforded cis-… read more here.

Keywords: dihydro diazecines; structure reactivity; synthesis structure; binaphthyl ... See more keywords