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合成了携带有丹磺酰基荧光团和(1R,2R)- 或(1S,2S)-1,2-二苯基乙二胺键合单元的双臂杯[4]芳烃手性阴离子受体(1和2)。通过荧光光谱检测了受体对手性氨基酸阴离子的键和能力。非线型曲线拟合的结果表明受体(1或2)与N-乙酰基-L或D-天冬氨酸盐通过多重氢键的相互作用形成了1:1的络合物。并且展现了对N-乙酰基天冬氨酸盐对映体良好的对映选择性的荧光识别(受体1: Kass(D)/ Kass(L)=6.74;受体2: Kass(L)/ Kass (D)=6.48)。明显不同的荧光响应说明受体1和2能被用作为对N-乙酰基天冬氨酸盐的荧光化学传感器。 相似文献
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手性氮丙啶试剂的合成 总被引:3,自引:0,他引:3
L-缬氨酸和L-异亮氨酸经NaBH4还原得到相应的氨基醇化合物1(a,b);再经与对甲苯磺酰氯反应得到3-甲基-2-对甲苯磺酰氨基-丁醇对甲苯磺酸酯2a和3-甲基-2-对甲苯磺酰氨基-戊醇对甲苯磺酸酯2b;化合物2(a,b)在强碱条件下经环化反应得两种手性氮丙试剂3a和3b,对中间体2的合成条件进行了探讨,并测定了手性氮丙啶试剂的旋光性,所有中间体和手性氮丙啶试剂均经元素分析、^1HNMR,MS等证实了它们的结构和组成。 相似文献
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Two chiral fluorescent receptors 1 and 2 based on (R)-1,1‘-binaphthylene-2,2‘-bisthiourea were synthesized, and their chiral recognition properties for enantiomeric mandelate anions were studied by fluorescence spectra and molecular modeling. Addition of the L- and D-mandelate anions caused considerable fluorescent increases in the fluorescent intensity of the host solution. The L-enantiomer can enhance the fluorescence intensity of 1 much more than the D-enantiomer can do, and 1 shows a better enantioselective recognition ability than 2. 相似文献
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丙烯酸酯三元共聚物负载双硫铂配合物的合成及催化性能 总被引:2,自引:0,他引:2
二丙烯酸-1,4-丁二酯,丙烯酸甲酯,丙烯酸β-氯乙酯三元共聚,制得交联型丙烯酸酯三元共聚物。再依次与3,6-二硫杂1-辛醇,氯亚铂酸钾反应,得到二种新型的丙烯酸酯三元共聚物负载的双硫铂配合物。该配合物对1-十二碳烯,1-癸烯,苯基烯丙醚与三乙氧基硅烷的硅氢加成反应具有较高的催化活性。 相似文献
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Novel amphiphilic fluorescent graft copolymer (PVP-PyAHy) was successfully synthesized by the free radical copolymerization of hydrophobic monomer N-(1-pyrenebutyryl)-N'-acryloyl hydrazide (PyAHy) with hydrophilic precursor polymers of vinyl-functionalized poly(N-vinylpyrrolidone) (PVP) in DMF. The copolymer is amphiphilic and has intrinsic fluorescence. FT-IR, ^1H-NMR, TEM, gel permeation chromatography-multi-angle laser light scattering, UV-Vis spectroscopy and fluorescence spectroscopy were used to characterize this copolymer. The TEM observation shows that the copolymer PVP-PyAHy forms micelles in aqueous solution. Results of fluorometric measurements illustrate that the critical micelle concentration (CMC) value of PVP-PyAHy in aqueous solution is about 0.90 mg/mL. To examine the encapsulation ability of the copolymer in aqueous media, methyl yellow was employed as a model hydrophobic agent. The loading level of the polymer to methyl yellow is 8.8 mg/g. The cytotoxicity assays for Madin Darby Canine Kidney (MDCK) cells shows good biocompatibility of PVP-PyAHy in vitro. These results suggest the potential of this copolymer PVP-PyAHy as drugs delivery carrier and fluorescent tracer. 相似文献
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