Synthesis and Metal Ion Adsorption Properties of a Dense Triazole Polymer Carrying Cysteine Residues

Ejima, Ryo; Nakahata, Masaki; Kamon, Yuri et al.

Journal of Polymer Science, 2025

アクセス数:437件（2025-07-18 15:18 集計）

固定URL: https://hdl.handle.net/11094/100547

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タイトル
Synthesis and Metal Ion Adsorption Properties of a Dense Triazole Polymer Carrying Cysteine Residues
著者
著者名
Ejima, Ryo
NRID
1000040755641 1000040755641
ORCID
0000-0003-0397-5922 0000-0003-0397-5922
researchmap permalink
masakinakahata masakinakahata
Scopus Author ID
54397448600 54397448600
著者名
Nakahata, Masaki
NRID
1000090773218 1000090773218
researchmap permalink
7000020772 7000020772
Scopus Author ID
56275658600 56275658600
著者名
Kamon, Yuri
NRID
1000070294147 1000070294147
ORCID
0000-0003-0061-3432 0000-0003-0061-3432
researchmap permalink
read0051750 read0051750
Scopus Author ID
7003295779 7003295779
著者名
Hashidzume, Akihito
キーワード等
copper(I)-catalyzed azide–alkyne cycloaddition
cysteine
dense triazole polymers
metal ion adsorption
内容
Ejima R., Nakahata M., Kamon Y., et al. Synthesis and Metal Ion Adsorption Properties of a Dense Triazole Polymer Carrying Cysteine Residues. Journal of Polymer Science, (2025); https://doi.org/10.1002/pol.20240752.
抄録
Copper(I)-catalyzed azide–alkyne cycloaddition (CuAAC) is promising as a reaction to synthesize functional polymers consisting of 1,2,3-triazole units. Recently, we reported a series of dense 1,2,3-triazole polymers of 4-azido-5-hexynoic acid derivatives. Herein, we designed a new water-soluble dense 1,2,3-triazole polymer carrying amino acid residues in the side chains, that is, poly(N-(4-azido-5-hexynoyl)cysteine) (poly(AC)), bearing L-cysteine as a ligand for metal ions. CuAAC polymerization of a protected monomer followed by deprotection and neutralization yielded the sodium salt of poly(AC) (poly(AC)Na). The adsorption capacity of poly(AC)Na with Cd2+ was investigated with a colorimetric assay. Furthermore, the interactions for poly(AC) with group 12 metal ions (Zn2+, Cd2+, and Hg2+) were investigated using isothermal titration calorimetry (ITC) and transmittance measurements. Utilizing the colorimetric assay data, the Cd2+ adsorption capacity per unit weight of poly(AC)Na was evaluated to be 4–5 mmol g−1, comparable to those of Cd2+ adsorbents reported previously. The ITC data demonstrated that the interactions of poly(AC)Na with Zn2+, Cd2+, and Hg2+ were predominantly exothermic. Based on the ITC data, apparent dissociation constants of interactions were roughly estimated to be in the order of 10−5–10−4 M, which are comparable to those for metal-binding biomolecules. The transmittance data indicated that the poly(AC)Na/CdCl2 system underwent phase separation.
出版者
John Wiley and Sons Inc
収録物名
Journal of Polymer Science
刊行年月
2025-02-05
言語
英語
ハンドルURL
https://hdl.handle.net/11094/100547
PISSN
26424150
eISSN
26424169
関連情報 (isIdenticalTo)
DOI (出版社版)
https://doi.org/10.1002/pol.20240752
アクセス権
open access
権利情報
This article is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
出版タイプ
Version of Record
カテゴリ
学術雑誌論文 Journal Article