pH-responsive photoluminescence properties of a water-soluble copolymer containing quinoline groups in aqueous solution

2010 ◽  
Vol 48 (19) ◽  
pp. 2078-2083 ◽  
Author(s):  
Aliki Kalogianni ◽  
Eleftherios Pefkianakis ◽  
Andreas Stefopoulos ◽  
Georgios Bokias ◽  
Joannis K. Kallitsis
Keyword(s):  
Aqueous Solution ◽  
Water Soluble ◽  
Photoluminescence Properties ◽  
Ph Responsive ◽  
Water Soluble Copolymer

A water-soluble cyclometalated iridium(iii) complex for pH sensing based on aggregation-induced enhanced phosphorescence

2019 ◽  
Vol 48 (23) ◽  
pp. 8068-8075 ◽  
Author(s):  
Keiji Ohno ◽  
Tetuya Sakata ◽  
Machi Shiiba ◽  
Akira Nagasawa ◽  
Takashi Fujihara
Keyword(s):  
Aqueous Solution ◽  
Schiff Base ◽  
Water Soluble ◽  
The Novel ◽  
Ph Sensing ◽  
Ph Responsive ◽  
Protonated Species

The novel Na[Ir(ppy)2(SB-COO)] (Hppy = phenylpyridine; HSB-COOH = 4-carboxylanilinesalicylaldehyde Schiff base) in aqueous solution showed pH-responsive aggregation-induced enhanced phosphorescence (AIEP) by the formation of the protonated species [Ir(ppy)2(SB-COOH)].

scholarly journals pH Responsive Self-Assembly of Cucurbit[7]urils and Polystyrene-Block-Polyvinylpyridine Micelles for Hydrophobic Drug Delivery

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Basem A. Moosa ◽  
Afnan Mashat ◽  
Wengang Li ◽  
Karim Fhayli ◽  
Niveen M. Khashab
Keyword(s):  
Drug Delivery ◽  
Aqueous Solution ◽  
Self Assembly ◽  
Room Temperature ◽  
Water Soluble ◽  
Hydrophobic Drug ◽  
Ph Responsive ◽  
Ph Values ◽  
Neutral Ph ◽  
Release Study

Polystyrene-block-polyvinylpyridine (PS-b-P4VP) polypseudorotaxanes with cucurbit[7]urils (CB[7]) were prepared from water soluble PS-b-P4VPH+polymer and CB[7] in aqueous solution at room temperature. At acidic and neutral pH, the pyridinium block of PS-b-P4VP is protonated (PS-b-P4VPH+) pushing CB[7] to preferably host the P4VP block. At basic pH (pH 8), P4VP is not charged and thus is not able to strongly complex CB[7]. This phenomenon was verified further by monitoring the release of pyrene, a hydrophobic cargo model, from a PS-b-P4VPH+/CB[7] micellar membrane. Release study of UV active pyrene from the membrane at different pH values revealed that the system is only operational under basic conditions and that the host-guest interaction of CB[7] with P4VPH+significantly slows down cargo release.

Three-coordinate, luminescent, water-soluble gold(I) phosphine complexes: structural characterization and photoluminescence properties in aqueous solution

2003 ◽  
Vol 352 ◽  
pp. 31-45 ◽  
Author(s):  
Zerihun Assefa ◽  
Jennifer M. Forward ◽  
Tiffany A. Grant ◽  
Richard J. Staples ◽  
Brian E. Hanson ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Structural Characterization ◽  
Water Soluble ◽  
Photoluminescence Properties ◽  
Phosphine Complexes

Enantioselective Recognition of Chiral Guests by the Water-Soluble Chiral Keplerate {Mo132} Spherical Capsule with 30 Inner Lactate Ligands

2019 ◽  
Author(s):  
Nancy Watfa ◽  
Weimin Xuan ◽  
Zoe Sinclair ◽  
Robert Pow ◽  
Yousef Abul-Haija ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Chiral Recognition ◽  
Association Constants ◽  
Water Soluble ◽  
Enantioselective Recognition ◽  
H Nmr ◽  
Dosy Nmr ◽  
Spherical Capsule ◽  
Surface Pores ◽  
Guest Chemistry

Investigations of chiral host guest chemistry are important to explore recognition in confined environments. Here, by synthesizing water-soluble chiral porous nanocapsule based on the inorganic metal-oxo Keplerate-type cluster, {Mo<sub>132</sub>} with chiral lactate ligands with the composition [Mo<sub>132</sub>O<sub>372</sub>(H<sub>2</sub>O)<sub>72</sub>(<i>x-</i>Lactate)<sub>30</sub>]<sup>42-</sup> (<i>x</i> = D or L), it was possible to study the interaction with a chiral guest, L/D-carnitine and (<i>R</i>/<i>S</i>)-2-butanol in aqueous solution. The enantioselective recognition was studied by quantitative <sup>1</sup>H NMR and <sup>1</sup>H DOSY NMR which highlighted that the chiral recognition is regulated by two distinct sites. Differences in the association constants (K) of L- and D-carnitine, which, due to their charge, are generally restricted from entering the interior of the host, are observed, indicating that their recognition predominantly occurs at the surface pores of the structure. Conversely, a larger difference in association constants (K<i><sub>S</sub></i>/K<i><sub>R</sub></i> = 3) is observed for recognition within the capsule interior of (<i>R</i>)- and (<i>S</i>)-2-butanol.

Grafting pH‐Responsive Copolymers to Cold Water‐Soluble Starch Using Nitroxide‐Mediated Polymerization

2021 ◽  
pp. 2100011
Author(s):  
Alexander T. Fritz ◽  
Jaime C. Cazotti ◽  
Omar Garcia‐Valdez ◽  
Niels M. B. Smeets ◽  
Marc A. Dubé ◽  
...  
Keyword(s):  
Cold Water ◽  
Soluble Starch ◽  
Water Soluble ◽  
Ph Responsive ◽  
Nitroxide Mediated Polymerization

scholarly journals Sulfobetaine Cryogels for Preferential Adsorption of Methyl Orange from Mixed Dye Solutions

Polymers ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 208
Author(s):  
Ramona B. J. Ihlenburg ◽  
Anne-Catherine Lehnen ◽  
Joachim Koetz ◽  
Andreas Taubert
Keyword(s):  
Aqueous Solution ◽  
Methylene Blue ◽  
Methyl Orange ◽  
Dye Removal ◽  
Selective Adsorption ◽  
Water Soluble ◽  
Organic Substances ◽  
Preferential Adsorption ◽  
Dimethyl Ammonium ◽  
Dye Solutions

New cryogels for selective dye removal from aqueous solution were prepared by free radical polymerization from the highly water-soluble crosslinker N,N,N’,N’-tetramethyl-N,N’-bis(2-ethylmethacrylate)-propyl-1,3-diammonium dibromide and the sulfobetaine monomer 2-(N-3-sulfopropyl-N,N-dimethyl ammonium)ethyl methacrylate. The resulting white and opaque cryogels have micrometer sized pores with a smaller substructure. They adsorb methyl orange (MO) but not methylene blue (MB) from aqueous solution. Mixtures of MO and MB can be separated through selective adsorption of the MO to the cryogels while the MB remains in solution. The resulting cryogels are thus candidates for the removal of hazardous organic substances, as exemplified by MO and MB, from water. Clearly, it is possible that the cryogels are also potentially interesting for removal of other compounds such as pharmaceuticals or pesticides, but this must be investigated further.

A water-soluble hybrid[4]arene: synthesis, host–guest complexation and application in the construction of a supra-amphiphile

2016 ◽  
Vol 40 (5) ◽  
pp. 4756-4760 ◽  
Author(s):  
Bin Hua ◽  
Li Shao ◽  
Jiong Zhou ◽  
Guocan Yu
Keyword(s):  
Water Soluble ◽  
Ph Responsive ◽  
New Host ◽  
Recognition Motif ◽  
First Time

A water-soluble hybrid[4]arene was synthesized for the first time and its pH-responsive host–guest complexation with paraquat in water was investigated. This new host–guest recognition motif was further applied in the construction of a supra-amphiphile.

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