Abstract Hyperbranched poly(phenylalanine-lysine) (HBP(P-L)) was synthesized by lysine, phenylalanine and N, N-dimethylbisacrylamide (MBA) via Michael addition reaction and characterized by Fourier transform infrared (FTIR) spectra, 13CNMR and 1HNMR. Furthermore, fluorescence spectroscopy indicates the fluorescence intensity of HBP(P-L) aqueous solutions increases with the concentration of HBP(P-L) increasing; Multiwalled carbon nanotubes (MWCNTs) were modified using HBP(P-L) for the purpose of preparing MWCNTs-HBP(P-L), which was characterized by FTIR, Raman analysis and thermogravimetric analysis (TGA). Visual inspection method, UV–vis absorption spectra and Zeta potential are adopted to evaluate the dispersion properties of MWCNT-HBP(P-L) aqueous solutions, and the results illustrate that HBP(P-L) does improve the dispersibility of MWCNT. Moreover, MWCNT-HBP(P-L) owns the best dispersibility in aqueous solution when the mass ratio is 1:60. Additionally, it presents an excellent linear relationship between the fluorescence intensity of MWCNTs-HBP(P-L) dispersion and the mass ratio of MWCNT-HBP(P-L). MWCNTs-HBP(P-L) exhibits unique dispersion properties as well as excellent fluorescence properties, which make the MWCNT-HBP(P-L) be potentially used in the field of optical materials.

中文翻译：

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超支化聚苯丙氨酸-赖氨酸修饰的多壁碳纳米管的分散和荧光特性

摘要 以赖氨酸、苯丙氨酸和 N, N-二甲基双丙烯酰胺 (MBA) 为原料，通过迈克尔加成反应合成了超支化聚苯丙氨酸-赖氨酸 (HBP(PL))，并通过傅里叶变换红外 (FTIR) 光谱、13CNMR 和 1HNMR 对其进行表征。此外，荧光光谱表明HBP(PL)水溶液的荧光强度随着HBP(PL)浓度的增加而增加；为了制备MWCNTs-HBP(PL)，使用HBP(PL)对多壁碳纳米管(MWCNTs)进行了改性，并通过FTIR、拉曼分析和热重分析(TGA)对其进行了表征。采用目测法、紫外-可见吸收光谱和Zeta电位评估MWCNT-HBP(PL)水溶液的分散性能，结果表明HBP(PL)确实提高了MWCNT的分散性。此外，当质量比为1:60时，MWCNT-HBP(PL)在水溶液中的分散性最好。此外，它在 MWCNTs-HBP(PL) 分散体的荧光强度与 MWCNT-HBP(PL) 的质量比之间呈现出极好的线性关系。MWCNTs-HBP(PL)具有独特的色散特性和优异的荧光特性，这使得MWCNT-HBP(PL)在光学材料领域具有潜在的应用前景。