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首页> 外文期刊>Chemistry, an Asian journal >Primary Ammonium Monocarboxylate Synthon in Designing Supramolecular Gels: A New Series of Chiral Low-Molecular-Weight Gelators Derived from Simple Organic Salts that are Capable of Generating and Stabilizing Gold Nanoparticles
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Primary Ammonium Monocarboxylate Synthon in Designing Supramolecular Gels: A New Series of Chiral Low-Molecular-Weight Gelators Derived from Simple Organic Salts that are Capable of Generating and Stabilizing Gold Nanoparticles

机译：超分子凝胶设计中的主要单羧酸铵合成子：手性低分子量胶凝剂的新系列，其衍生自能够生成和稳定金纳米颗粒的简单有机盐

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摘要

The primary ammonium monocarboxylate (PAM) synthon has been exploited to generate a new series of PAM salts from the free amine of L-phenylalanine-3-pyridyl amide, (S)-2-amino-3-phenyl-N-(pyridine-3-yl)propanamine (designated as "B"), and various substituted benzoic acids (designated as "A(R)"; R=4-Me, 4-Cl, 4-Br, 4-NO_2, 3-Me, 3-Cl, 3-Br, 3-NO_2, 2-Me, 2-Cl, 2-Br, 2-NO_2). The 4- and 3-substituted benzoate salts showed moderate-to-excellent gelation ability with a number of polar and apolar solvents. The gels were characterized by DSC, rheology, SEM and TEM, FTIR spectroscopy, etc. Structure-property studies based on single-crystal powder X-ray diffraction (PXRD) and FTIR data provided insights into the role of the PAM synthon in the formation of the gel networks. Interestingly, some of the gels were capable of forming and stabilizing gold nanoparticles at room temperature without the use of any exogenous reducing agents.
机译：已开发出伯一元羧酸铵（PAM）合成子，可从L-苯丙氨酸-3-吡啶酰胺的游离胺，（S）-2-氨基-3-苯基-N-（吡啶- 3-基）丙胺（指定为“ B”）和各种取代的苯甲酸（指定为“ A（R）”; R = 4-Me，4-Cl，4-Br，4-NO_2、3-Me， 3-Cl，3-Br，3-NO_2、2-Me，2-Cl，2-Br，2-NO_2）。 4-和3-取代的苯甲酸盐在多种极性和非极性溶剂中均表现出中等至优异的胶凝能力。通过DSC，流变学，SEM和TEM，FTIR光谱等对凝胶进行表征。基于单晶粉末X射线衍射（PXRD）和FTIR数据的结构性质研究提供了对PAM合成子在地层中的作用的深刻见解。凝胶网络。有趣的是，某些凝胶能够在室温下形成和稳定金纳米颗粒，而无需使用任何外源性还原剂。

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