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Synthesis of high-molecular-weight [60]fullerene pearl-necklace polyamides derived from equatorial-[60]fullerenobisacetic acid

机译:赤道-[60]富勒烯双乙酸衍生的高分子量[60]富勒烯珍珠项链聚酰胺的合成

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A series of [60]fullerene pearl-necklace polyamides, consisting of equatorial[60]fullerenobisacetic acid and various chromophoric aromatic diamines, were synthesized by a phosphorylation route using large amounts of triphenyl phosphite and pyridine as condensing reagents with stepwise addition of the condensing reagents. In the present polymers, [60]fullerene pearls and diamine linkers were attached to one another by cyclopropane connectors. The polyamides had weight-average molecular weights (M-w) of 4.5-5.0x10(4) g/mol and inherent viscosities (eta (inh)) of 0.3-0.4 dL/g in N,N-dimethylacetamide (DMAc) at 30 degreesC. They had glass transition temperatures at 30-125 degreesC and decomposition temperatures at 300-310 degreesC. The UV-VIS spectra in DMAc exhibited broad absorption with lambda (max) at 310-390 nm tailing to longer wavelengths. [References: 20]
机译:使用大量的亚磷酸三苯酯和吡啶作为缩合剂,并逐步添加缩合剂,通过磷酸化途径合成了一系列由赤道[60]富勒烯双乙酸和各种发色性芳香族二胺组成的[60]富勒烯珍珠项链聚酰胺。 。在本发明的聚合物中,[60]富勒烯珍珠和二胺连接基通过环丙烷连接基彼此连接。在30°C下的N,N-二甲基乙酰胺(DMAc)中,聚酰胺的重均分子量(Mw)为4.5-5.0x10(4)g / mol,固有粘度(eta(inh))为0.3-0.4 dL / g。 。它们的玻璃化转变温度为30-125℃,分解温度为300-310℃。 DMAc中的UV-VIS光谱表现出较宽的吸收率,在310-390 nm处的λ(最大值)拖到更长的波长。 [参考:20]

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