含希夫碱侧基聚酯及其锌配合物的合成和性能

doi:10.11944/j.issn.1000-0518.2016.04.150283

摘要/Abstract

摘要：

经多步反应合成2种新型含希夫碱侧基聚酯(P5,P6),进一步与醋酸锌反应得到2种聚酯锌配合物(P5-Zn,P6-Zn)。采用元素分析、FT-IR、UV-Vis、¹H NMR、GPC、TG、DSC和荧光光谱等技术手段对其结构和性能进行表征。 P5和P6均溶于四氢呋喃(THF)、氯仿(CHCl₃)、N,N-二甲基甲酰胺(DMF)、N,N-二甲基乙酰胺(DMAc)、二甲基亚砜(DMSO)、N-甲基吡咯烷酮法(NMP)等有机溶剂,P5-Zn和P6-Zn部分溶于THF及CHCl₃,溶于DMF、DMAc、DMSO、NMP等有机溶剂。 P5和P6的重均相对分子质量M_w及相对分子质量分布指数PDI分别为4164、6148 g/mol和1.42、1.43。 P5、P6、P5-Zn和P6-Zn的5%失重温度分别为339、348、367和358℃。 P5、P6、P5-Zn和P6-Zn的玻璃化转变温度T_g分别为88.8、123.3、39.8和63.8 ℃。 P5和P6的DMF溶液(5×10^-5 mol/L)在418和416 nm处发射弱紫色荧光,P5-Zn和P6-Zn的DMF溶液(5×10^-5 mol/L)在505和506 nm处发射强绿色荧光,固体P5-Zn和P6-Zn在527和532 nm处发射强绿色荧光。

关键词: 希夫碱, 聚酯, 锌配合物, 合成, 性能

Abstract:

Two kinds of novel polyesters containing Schiff base side groups(P5, P6) were synthesized by multistep reactions. Subsequently, P5 and P6 reacted with zinc acetate to get zinc complexes(P5-Zn, P6-Zn). The structures and properties of polyesters and zinc complexes were characterized by elemental analysis, FT-IR, UV-Vis, ¹H NMR, GPC, TG, DSC and fluorescence spectroscopy. Polyesters P5 and P6 are soluble in tetrahydrofurane(THF), CHCl₃, N,N-dimethyl formamide(DMF), N,N-dimethyl acetamide(DMAc), dimethylsulfoxide(DMSO), and N-methyl pyrrolidone(NMP). Complexes P5-Zn and P6-Zn can be partly dissolved in THF and CHCl₃, and completely dissolved in DMF, DMAc, DMSO, and NMP. The M_w and PDI of P5 and P6 are 4164, 6148 g/mol and 1.42, 1.43, respectively. The 5% mass loss temperatures of P5, P6, P5-Zn and P6-Zn are 339, 348, 367 and 358 ℃, respectively. The T_g values of P5, P5-Zn, P6 and P6-Zn are 88.8, 123.3, 39.8 and 63.8 ℃, respectively. Fluorescence emission peaks of P5 and P6 in DMF solution appear at 418 and 416 nm, emitting weak purple light. Fluorescence emission peaks of P5-Zn and P6-Zn in DMF solution appear at 505 and 506 nm, emitting strong green light. Fluorescence emission peaks of P5-Zn and P6-Zn in solid state appear at 527 and 532 nm, emitting strong green light.

Key words: Schiff base, polyester, zinc complex, synthesis, property

鲁岩, 吴思雨, 马百庆, 靳奇峰, 石佳, 于世钧. 含希夫碱侧基聚酯及其锌配合物的合成和性能[J]. 应用化学, 2016, 33(4): 452-458.

LU Yan, WU Siyu, MA Baiqing, SHI Jia, JIN Qifeng, YU Shijun. Synthesis and Properties of Polyesters Containing Schiff Base Side Groups and Their Zinc Complexes[J]. Chinese Journal of Applied Chemistry, 2016, 33(4): 452-458.

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