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Synthesis, characterization and antifungal efficacy of C-coordinated O-carboxymethyl chitosan Cu(II) complexes
Liu, Weixiang1,2; Qin, Yukun1; Liu, Song1; Xing, Ronge1; Yu, Huahua1; Chen, Xiaolin1; Li, Kecheng1; Li, Pengcheng1
2017-03-15
Source PublicationCARBOHYDRATE POLYMERS
Volume160Pages:97-105
SubtypeArticle
AbstractA novel type of O-carboxymethyl chitosan Schiff bases (O-CSPX) was synthesized via a condensation reaction. After the coordination reaction of cupric ions, Cu(II) complexes (O-CSPX-Cu) were achieved. The theoretical structure of O-CSPX-Cu calculated by Gaussian 09 reveals that the copper ions underwent dsp(2) hybridization, coordinated by the carbon atom in the p-pi conjugate group and the oxygen atoms in the acetate ion. Then, the structures were confirmed by FT-IR, H-1 NMR, CP-MAS C-13 NMR, elemental analysis, DSC and XRD. The antifungal properties of O-CSPX-Cu against Phytophthora capsici (P. capsici), Gibberella zeae (G. zeae) and Glomerella cingulata (G. cingulata) were evaluated at concentrations ranging from 0.05 mg/mL to 0.20 mg/mL. The experiments indicated that the derivatives have significantly enhanced antifungal activity after copper ion complexation compared with the original chitosan. Moreover, it was shown that 0.20 mg/mL of O-CSP3-Cu and O-CSP4-Cu can 100% inhibit the growth of P. capsici. The experimental results reveal that the antifungal efficiency is related to the space steric hindrance on the benzene ring, which may provide a novel direction for the development of copper fungicides. (C) 2016 Elsevier Ltd. All rights reserved.
KeywordCoordination Chitosan Copper Complex Antifungal
DOI10.1016/j.carbpol.2016.12.040
Indexed BySCI
Language英语
WOS IDWOS:000393246800012
Citation statistics
Document Type期刊论文
Version出版稿
Identifierhttp://ir.qdio.ac.cn/handle/337002/136348
Collection海洋生物技术研发中心
海洋环境工程技术研究发展中心
Affiliation1.Chinese Acad Sci, Inst Oceanol, Key Lab Expt Marine Biol, Qingdao 266071, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
First Author AffilicationKey Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Liu, Weixiang,Qin, Yukun,Liu, Song,et al. Synthesis, characterization and antifungal efficacy of C-coordinated O-carboxymethyl chitosan Cu(II) complexes[J]. CARBOHYDRATE POLYMERS,2017,160:97-105.
APA Liu, Weixiang.,Qin, Yukun.,Liu, Song.,Xing, Ronge.,Yu, Huahua.,...&Li, Pengcheng.(2017).Synthesis, characterization and antifungal efficacy of C-coordinated O-carboxymethyl chitosan Cu(II) complexes.CARBOHYDRATE POLYMERS,160,97-105.
MLA Liu, Weixiang,et al."Synthesis, characterization and antifungal efficacy of C-coordinated O-carboxymethyl chitosan Cu(II) complexes".CARBOHYDRATE POLYMERS 160(2017):97-105.
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