Poly(l-lysine) as a polychelatogen to remove toxic metals using ultrafiltration and bactericide properties of poly(l-lysine)–Cu2+ complexes

Rivas, Bernabé L.; Maureira, Antonio; Gúzman, Catherine; Contreras, David; Kaim, Wolfgang; Geckeler, Kurt E.

doi:10.1007/s00289-010-0418-3

Cited by 10 publications

(6 citation statements)

References 34 publications

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“…In the spectra of the complexes synthesized at other ratios, there is also a sulfate ion vibration band, the maximum of which is slightly shifted to the high-frequency region (1066 cm -1 ) and the degree of segregation decreases with an increase in the 𝐶𝑢𝑆𝑂 4 content. It is known that the amide and amino groups of the polypeptide can participate in coordination with 𝐶𝑢 2+ [41]. The absorption band of stretching vibrations of the associated NH and OH groups of collagen in the region of 3274 cm -1 , in the complexes shifts to the lowfrequency region.…”

Section: Fig 3 Ft-ir Spectrum Of 𝐶𝑢𝑆𝑂mentioning

confidence: 99%

“…Fig. 4 FT-IR spectra of the complexes synthesized at the initial molar ratio of collagen: 𝐶𝑢𝑆𝑂 4 = 0.0015 : 0.0072 (a); 0.003 : 0.0054 (b); 0.0045 : 0.0036 (c); 0.006 : 0.0018 (d); 0.0068 : 0.0009 (e)It is known that the amide and amino groups of the polypeptide can participate in coordination with 𝐶𝑢 2+[41]. The absorption band of stretching vibrations of the associated NH and OH groups of collagen in the region of 3274 cm -1 , in the complexes shifts to the lowfrequency region.…”

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confidence: 99%

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Synthesis, Composition and Structure of Complexes of Dialyzed Collagen With CuSO4

Rafikov¹,

Sadikova

Tursunkulov

et al. 2021

Preprint

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Coordination complexes of collagen with copper (II) sulfate were synthesized at different ratios of the starting materials. For the synthesis, a collagen solution was used, isolated from the skin of cattle, and then freed from electrolytes by dialysis. With an increase in the salt content, the yield of the reaction product increases. The composition and structure of the complex were determined by FT-IR spectroscopy, SEM, X-ray phase analysis, and differential scanning calorimetry. The complex is formed due to the coordination interaction of with the nitrogen and oxygen atom of collagen and water. An inadequate change in the composition of the complexes with a change in the initial ratio of the components was found. With an excess of collagen, some of it does not bind into a complex and precipitates. With an excess of salt, almost all of the collagen is bound into a complex and a rhombic single crystal is formed. The composition of the complex changes not due to a change in the coordination number , but due to an increase in the amount of these ions. An X-ray phase analysis of the starting materials and complexes has been carried out. The correspondence of the parameters of the crystal structure in the X-ray spectra of the complexes was found for a wide ratio of the starting materials. The synthesized complexes have been successfully used for dyeing textile materials.

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Section: Fig 3 Ft-ir Spectrum Of 𝐶𝑢𝑆𝑂mentioning

confidence: 99%

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confidence: 99%

Synthesis, Composition and Structure of Complexes of Dialyzed Collagen With CuSO4

Rafikov¹,

Sadikova

Tursunkulov

et al. 2021

Preprint

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“…In addition, Zn 2+ ions with dangling bonds at the surface could have established dative bonds with nonbonding electron pairs of N-groups. 39 Considering the formation of the colloidal ZnS QD (core) capped by the 3PL ligand (shell), which predominantly involves supercial and interfacial phenomena, it is important to investigate the nanoconjugate chemistry further using highresolution XPS spectroscopy analysis (HR-XPS). Hence, at the surface, the different chemical states of C (C-C/C-H, C-N-H, and N-C]O, Fig.…”

Section: Characterization Of Zns@cpp-amp Nanocolloidsmentioning

confidence: 99%

Bio-functionalized nanocolloids of ZnS quantum dot/amine-rich polypeptides for bioimaging cancer cells with antibacterial activity: “seeing is believing”

Mansur,

Carvalho,

Dorneles

et al. 2023

RSC Adv.

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“…The Cu(II)‐poly‐ L ‐lysine complex has also been reported to model the enzyme catalase, and catalyze the decomposition of H 2 O 2 at pH between 6 and 7. On another side, poly‐ L ‐lysine was also used as polychelatogen for the development of a sustainable ultra‐filtration process assisted by polymers to recover toxic metallic ions …”

Section: Introductionmentioning

confidence: 99%

“…On another side, poly-L-lysine was also used as polychelatogen for the development of a sustainable ultrafiltration process assisted by polymers to recover toxic metallic ions. [23] An interesting paper by Young and Greenaway [24] has characterized the complexation behavior of Cu(II) in poly-Llisyne by analyzing the electron paramagnetic resonance (EPR) spectra at different pH. More recently, the EPR technique has been used by Santana et al 25 to characterize the structure of catena-poly[copper(II)-l-dichloro-L-lysine].…”

Section: Introductionmentioning

confidence: 99%

Multi-Technique Characterization of Poly-L-lysine Dendrigrafts-Cu(II) Complexes for Biocatalysis

et al. 2014

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Poly-L-lysine is a biocompatible polymer used for drug or gene delivery, for transport through cellular membranes, and as nanosized magnetic resonance imaging contrast agents. Cu(II)-poly-L-lysine complexes are of particular interest for their role in biocatalysis. In this study, poly-L-lysine dendrigrafts (DGLs) at different generations (G2, G3, and G4) are synthesized and characterized in absence and presence of Cu(II) by means of electron paramagnetic resonance (EPR), UV-Vis, potentiometric titration and circular dichroism (CD). The analysis is performed as a function of the [Cu(II)]/[Lys] (=R) molar ratio, pH and generation by identifying differently flexible complexes in different dendrimer regions. The amine sites in the lateral chains become increasingly involved with the increase of pH. The good agreement and complementarity of the results from the different techniques provide an integrate view of the structural and dynamic properties of Cu(II)-DGL complexes implementing their use as biocatalysts.

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Poly(l-lysine) as a polychelatogen to remove toxic metals using ultrafiltration and bactericide properties of poly(l-lysine)–Cu2+ complexes

Cited by 10 publications

References 34 publications

Synthesis, Composition and Structure of Complexes of Dialyzed Collagen With CuSO4

Synthesis, Composition and Structure of Complexes of Dialyzed Collagen With CuSO4

Bio-functionalized nanocolloids of ZnS quantum dot/amine-rich polypeptides for bioimaging cancer cells with antibacterial activity: “seeing is believing”

Multi-Technique Characterization of Poly-L-lysine Dendrigrafts-Cu(II) Complexes for Biocatalysis

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