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quantum2007

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作者：Dezhi Qin . Li Zhang . Xian Du . Yabo Wang . Qiuxia Zhang
文題：Simple and green synthesis of protein-conjugated CdS nanoparticles and spectroscopic study on the interaction between CdS and zein
期刊：J Nanopart Res
年卷：2016 18: 254

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標題: Simple and green synthesis of protein-conjugated CdS nanoparticles and spectroscopic study on the interaction between CdS and zein
作者: Qin, DZ (Qin, Dezhi); Zhang, L (Zhang, Li); Du, X (Du, Xian); Wang, YB (Wang, Yabo); Zhang, QX (Zhang, Qiuxia)
來源出版物: JOURNAL OF NANOPARTICLE RESEARCH 卷: 18 期: 9 文獻號: 254 DOI: 10.1007/s11051-016-3568-x 出版年: AUG 29 2016
Web of Science 核心合集中的 "被引頻次": 0
被引頻次合計: 0
使用次數(shù) (最近 180 天): 3
使用次數(shù) (2013 年至今): 3
引用的參考文獻數(shù): 46
摘要: The present study demonstrates the role of zein molecules in synthesizing CdS nanoassemblies through protein-directed, green synthetic approach. Zein molecules can as capping ligand and stabilizing agent to regulate the nucleation and growth of CdS nanocrystals, and the obtained products are organic-inorganic nanocomposites. The analysis of surface charge and conductivity indicates that strong electrostatic force restricts mobility of ions, which creates a local supersaturation surrounding the binding sites of zein and reduces the activated energy of nucleation. The interaction between Cd2+/CdS and zein molecules was systematically investigated through spectroscopy techniques. Fourier transform infrared (FTIR) spectra were used to envisage the binding of the functional groups of zein with the surface of CdS nanoparticles. Ultraviolet visible (UV-Vis) and photoluminescence (PL) spectra results show that Cd2+/CdS might interact with the aromatic amino acids of protein molecules and change its chemical microenvironment. The quantum-confined effect of nanocrystals is confirmed by optical absorption spectrum due to the small size (3-5 nm) of CdS particles. The data of circular dichroism (CD) spectra indicate that the formation of CdS nanocrystals could lead to the conformational change of zein molecules. Moreover, the possible mechanism of CdS nanocrystals growth in zein solution was also discussed. The weak interactions such as Van der Waals, hydrophobic forces and hydrogen bonds in zein molecules should play a crucial factor in the self-assembly of small nanoparticles.
入藏號: WOS:000382752100001
語種: English
文獻類型: Article
作者關(guān)鍵詞: CdS; Zein; Nanocrystals; Biomimetic; Spectroscopy
KeyWords Plus: SECONDARY STRUCTURE; GOLD NANOPARTICLES; BOVINE HEMOGLOBIN; FACILE SYNTHESIS; NANOCRYSTALS; NANOCOMPOSITES; ANTIBACTERIAL; NANOSPHERES; MAIZE; LIGHT
地址: [Qin, Dezhi; Zhang, Li; Du, Xian; Wang, Yabo; Zhang, Qiuxia] Pingdingshan Univ, Coll Chem & Environm Engn, Pingdingshan 467000, Peoples R China.
通訊作者地址: Qin, DZ (通訊作者),Pingdingshan Univ, Coll Chem & Environm Engn, Pingdingshan 467000, Peoples R China.
電子郵件地址: dezhiqin@163.com
出版商: SPRINGER
出版商地址: VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
Web of Science 類別: Chemistry, Multidisciplinary; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary
研究方向: Chemistry; Science & Technology - Other Topics; Materials Science
IDS 號: DV2LN
ISSN: 1388-0764
eISSN: 1572-896X
29 字符的來源出版物名稱縮寫: J NANOPART RES
ISO 來源出版物縮寫: J. Nanopart. Res.
來源出版物頁碼計數(shù): 11
基金資助致謝:
基金資助機構(gòu) 授權(quán)號
Key Project of Henan Province Higher Educational Science and Technology Program
15A150070
Nature Science Foundation of Pingdingshan University
PDSU-QNJJ-2013003
This work was supported by the Key Project of Henan Province Higher Educational Science and Technology Program (15A150070) and the Nature Science Foundation of Pingdingshan University (PDSU-QNJJ-2013003). We also thank the referees for helpful comments.
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