Anion binding properties of poly(vinylpyrrolidone) in aqueous solution studied by halide NMR spectroscopy

1991 ◽  
Vol 24 (8) ◽  
pp. 1727-1730 ◽  
Author(s):  
Jin Deog Song ◽  
Ryong Ryoo ◽  
Mu Shik Jhon
Keyword(s):  
Aqueous Solution ◽  
Nmr Spectroscopy ◽  
Anion Binding ◽  
Binding Properties

The synthesis of two novel neutral receptors and their anion binding properties

2004 ◽  
Vol 82 (3) ◽  
pp. 454-460 ◽  
Author(s):  
Zhen-Ya Zeng ◽  
Yong-Bing He ◽  
Lan-Hua Wei ◽  
Jin-Long Wu ◽  
Yan-Yan Huang ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Nmr Spectroscopy ◽  
Hydrogen Bonds ◽  
Color Change ◽  
Anion Recognition ◽  
Association Constants ◽  
Anion Binding ◽  
Binding Properties ◽  
Pale Yellow ◽  
H Nmr

Two new neutral receptors (1 and 2) containing thiourea and amide groups were synthesized by simple steps in good yields. The binding properties of 1 and 2 with anions were examined by UV–vis, fluorescence, and 1H NMR spectroscopy. Receptor 1 had a better AcO–: H2PO4– selectivity in comparison with that for receptor 2. The association constants of 1·AcO–, 2·AcO–, and 2·H2PO4– were higher in comparison with those of other anions (Cl–, Br–, I–, p-NO2PhO–, and p-NO2PhOPO32–). In particular, a clear color change was observed, from pale yellow to red-brown, upon addition of AcO– to the solution of 1 in DMSO. The UV–vis and fluorescence data indicate that a 1:1 stoichiometry complex is formed between compound 1 or 2 and anions through hydrogen-bonding interactions.Key words: neutral receptors, anion recognition, synthesis, hydrogen bonds.

scholarly journals Synthesis of Carbohydrate Based Macrolactones and Their Applications as Receptors for Ion Recognition and Catalysis

Molecules ◽  
2021 ◽  
Vol 26 (11) ◽  
pp. 3394
Author(s):  
Surya B. Adhikari ◽  
Anji Chen ◽  
Guijun Wang
Keyword(s):  
Nucleophilic Substitution ◽  
Supramolecular Chemistry ◽  
Copper Sulfate ◽  
Substitution Reaction ◽  
Biological Properties ◽  
Anion Binding ◽  
Nucleophilic Substitution Reaction ◽  
Binding Properties ◽  
Intramolecular Nucleophilic Substitution ◽  
Leaving Groups

Glycomacrolactones exhibit many interesting biological properties, and they are also important in molecular recognitions and for supramolecular chemistry. Therefore, it is important to be able to access glycomacrocycles with different sizes and functionality. A new series of carbohydrate-based macrocycles containing triazole and lactone moieties have been designed and synthesized. The synthesis features an intramolecular nucleophilic substitution reaction for the macrocyclization step. In this article, the effect of some common sulfonate leaving groups is evaluated for macrolactonization. Using tosylate gave good selectivity for monolactonization products with good yields. Fourteen different macrocycles have been synthesized and characterized, of which eleven macrocycles are from cyclization of the C1 to C6 positions of N-acetyl D-glucosamine derivatives and three others from C2 to C6 cyclization of functionalized D-glucosamine derivatives. These novel macrolactones have unique structures and demonstrate interesting anion binding properties, especially for chloride. The macrocycles containing two triazoles form complexes with copper sulfate, and they are effective ligands for copper sulfate mediated azide-alkyne cycloaddition reactions (CuAAC). In addition, several macrocycles show some selectivity for different alkynes.

scholarly journals Tuning Anion-Binding Properties of 22-Membered Unclosed Cryptands by Structural Modification of the Lariat Arm

ACS Omega ◽  
2020 ◽  
Vol 5 (45) ◽  
pp. 29601-29608
Author(s):  
Kajetan Dąbrowa ◽  
Patryk Niedbała ◽  
Marcin Pawlak ◽  
Marcin Lindner ◽  
Wiktor Ignacak ◽  
...  
Keyword(s):  
Structural Modification ◽  
Anion Binding ◽  
Binding Properties

Anion binding properties for pyrophosphate derived from a 2,6-diamidopyridinedipyrromethane macrocycle

2021 ◽  
Author(s):  
Rui Yi ◽  
Xing-Li Liu ◽  
Zheng-He Tang ◽  
Chao Huang ◽  
Bi-Xue Zhu ◽  
...  
Keyword(s):  
Anion Binding ◽  
Binding Properties

NMR spectroscopy of inclusion complex of d-(-)-chloramphenicol with β-cyclodextrin in aqueous solution

Il Farmaco ◽  
2004 ◽  
Vol 59 (10) ◽  
pp. 835-838 ◽  
Author(s):  
Syed Mashhood Ali ◽  
Fahmeena Asmat ◽  
Arti Maheshwari
Keyword(s):  
Aqueous Solution ◽  
Nmr Spectroscopy ◽  
Inclusion Complex

Determination of the complexation properties of a crosslinked poly(acrylic acid) gel with copper(II), nickel(II), and lead(II) in dilute aqueous solution

2001 ◽  
Vol 79 (4) ◽  
pp. 370-376 ◽  
Author(s):  
Catherine Morlay ◽  
Yolande Mouginot ◽  
Monique Cromer ◽  
Olivier Vittori
Keyword(s):  
Aqueous Solution ◽  
Ionic Strength ◽  
Acrylic Acid ◽  
Metal Ion ◽  
Conditional Stability ◽  
Binding Properties ◽  
Complex Species ◽  
Complexing Capacity ◽  
Dilute Aqueous Solution ◽  
Poly Acrylic Acid

The possible removal of copper(II), nickel(II), or lead(II) by an insoluble crosslinked poly(acrylic acid) was investigated in dilute aqueous solution. The binding properties of the polymer were examined at pH = 6.0 or 4.0 with an ionic strength of the medium µ = 0.1 or 1.0 M (NaNO3) using differential pulse polarography as an investigation means. The highest complexing capacity of the polyacid was obtained with lead(II) at pH = 6.0 with µ = 0.1 M, 4.8 mmol Pb(II)/g polymer. The conditional stability constants of the complex species formed were determined using the method proposed by Ruzic assuming that only the 1:1 complex species was formed; for lead(II) at pH = 6.0 and µ = 0.1 M, log K' = 5.3 ± 0.2. It appeared that the binding properties of the polymer increased, depending on the metal ion, in the following order: Ni(II) < Cu(II) < Pb(II). The complexing capacity and log K' values decreased with the pH or with an increase of the ionic strength. These results were in agreement with the conclusions of our previous studies of the hydrosoluble linear analogues. Finally, with the insoluble polymer, the log K' values were comparable to those previously obtained with the linear analogue whereas the complexing capacity values expressed in mmol g-1 were slightly lower.Key words: insoluble crosslinked poly(acrylic acid), copper(II), nickel(II), and lead(II) complexation.

Folding and Anion-Binding Properties of Fluorescent Oligoindole Foldamers

2008 ◽  
Vol 14 (36) ◽  
pp. 11406-11414 ◽  
Author(s):  
Uk-Il Kim ◽  
Jae-min Suk ◽  
Veluru Ramesh Naidu ◽  
Kyu-Sung Jeong
Keyword(s):  
Anion Binding ◽  
Binding Properties
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