Binding of methyl orange and the hydrophobic fluorescent probe, 2‐<i>p</i>‐toluidinylnaphthalene‐6‐sulfonate, by 2‐dialkylaminoethyl methacrylate‐<i>N</i>‐vinyl‐2‐pyrrolidone and related copolymers

Takagishi, Toru; Hosokawa, Toshitsugu

doi:10.1002/pola.1989.080270614

Cited by 7 publications

(3 citation statements)

References 13 publications

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“…During these years, the research work in this field has been gradually improved. The ways of binding of dyes by polymers include hydrophobic, − energetic, , and cooperation interactions. − Hydrophobic interaction originates from the interaction between apolar groups. Energetic interaction results from polar bonds between molecules.…”

Section: Introductionmentioning

confidence: 99%

Effect of Dye Structure on the Interaction between Organic Flocculant PAN-DCD and Dye

Zhuang

et al. 2002

Ind. Eng. Chem. Res.

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On the basis of the experimental methods of flocculated decolorization and equilibrium dialysis, the effect of dye structure on the interaction between organic flocculant PAN-DCD and dye has been explored. It was found that, under acidic conditions, PAN-DCD is effective in the decolorization of dyes with sulfonic acid groups and carboxyl groups and that the number of these groups has something to do with decolorization effectiveness. The more acidic groups in the dye, the greater the interaction extent between the flocculant and the dye and the higher the decolorization efficiency (DE) of the dye. Meanwhile, the hydrophobic groups in dyes also affect the binding of the dyes by PAN-DCD. The more hydrophobic groups in the dye, the higher the DE of the dye. The bigger the hydrophobic group in the dye, the more intensive the interaction of the dye with the floculant. Furthermore, amino and hydroxyl groups in dyes are related to the DE of the dyes as well, according to the formation of a hydrogen bond with the groups in the macromolecule. Therefore, the process of flocculated decolorization, resulting from the interaction between dye molecules and the flocculant, is controlled by both energetic and hydrophobic interactions.

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Section: Introductionmentioning

confidence: 99%

Effect of Dye Structure on the Interaction between Organic Flocculant PAN-DCD and Dye

Zhuang

et al. 2002

Ind. Eng. Chem. Res.

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“…The properties of a water solution of poly(N-vinyl-2pyrrolidone) (PVP) have been extensively studied. [1][2][3][4][5][6][7][8] PVP interacts with various small molecules, and many studies have been done to elucidate the mechanism of the interaction between synthetic polymer with low molecular compounds. It has been shown that the coil dimensions of PVP are reduced when it forms a complex with hydrophobic molecules [1][2][3] and hydrophobic interaction is the dominant force in the complex.…”

Section: Introductionmentioning

confidence: 99%

Pressure Effect on the Chain Shrinkage of Poly(vinylpyrrolidone) Induced by Complexation with a Hydrophobic Compound in Aqueous Solution

et al. 1998

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The effects of pressure on the binding of a hydrophobic compound (8-anilino-1-naphthalenesulfonate (ANS)) to poly(vinylpyrrolidone) (PVP) in aqueous solution were followed by the fluorescence enhancement over the pressure range 0.1-400 MPa. An elevation in pressure induced the dissociation of ANS from an oligomer PVP (molecular weight <6000) but favored its binding to a larger PVP molecule (MW > 10 000). We calculated the binding constant between ANS and PVP (K b ) and estimated the apparent volume changes accompanying the ANS binding to PVP (∆Vb ) from the pressure dependence of Kb. The volume changes for ANS binding to high-MW PVP's were dependent on the pressure, and negative values were obtained in the pressure region from 100 to 400 MPa. SAXS measurements demonstrated that the ANS binding to the high-MW PVP chain led to the reduction of radii of gyration, suggesting that ANS binding induced local cluster formation in the PVP chain around the binding site. The Kratky plot indicated that global shrinkage of the chain occurred, and the negative volume change for ANS binding to high-MW PVP is explained by the fact that the cluster formation around the ANS is followed by an inclusion of the cluster around ANS into the random coil for PVP.

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“…Corroborative evidence that PDMAEMA undergoes a change in conformation has resulted from fluorescence spectroscopic measurements using several water-soluble probes dispersed in aqueous solutions of the polyelectrolyte [151,155,156]. At low pH [50,151], mutual repulsion between the positive charges in the protonated form induces expansion of the coil.…”

Section: Polystyrene Sulfonic Acidmentioning

confidence: 99%

Optical Properties of Polyelectrolytes

Swanson

2010

Photochemistry and Photophysics of Polymer Materials

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A polyelectrolyte can be defined as a macromolecule with ionizable repeat units, which can consequently display pH-dependent behavior when dissolved in aqueous solution.As the term polyelectrolyte can also be extended to encompass natural biopolymers, which contain ionizable groups such as peptides, proteins, and DNA, it is perhaps not surprising that synthetic polyelectrolytes are often used as simple models for more complex biological systems. Indeed, many of the photophyscial techniques discussed in this chapter were developed by biologists and biophysicists interested in the conformational behavior and interactions of biopolymers [1].

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Binding of methyl orange and the hydrophobic fluorescent probe, 2‐p‐toluidinylnaphthalene‐6‐sulfonate, by 2‐dialkylaminoethyl methacrylate‐N‐vinyl‐2‐pyrrolidone and related copolymers

Cited by 7 publications

References 13 publications

Effect of Dye Structure on the Interaction between Organic Flocculant PAN-DCD and Dye

Effect of Dye Structure on the Interaction between Organic Flocculant PAN-DCD and Dye

Pressure Effect on the Chain Shrinkage of Poly(vinylpyrrolidone) Induced by Complexation with a Hydrophobic Compound in Aqueous Solution

Optical Properties of Polyelectrolytes

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