N-丙烯酰吗啉的合成

以丙烯酸、三氯化磷为原料合成丙烯酰氯,再与吗啉酰基化生成N-丙烯酰吗啉。产品纯度99.5%以上。     

Catalytic transfer hydrogenation of poly(acryloylmorpholine)-based peptide-resin assemblies and of derived peptide segments

Catalytic transfer hydrogenation using in situ generated Pd black has been used to cleave benzyl ester linked peptides from poly(acryloylmorpholine)-peptide solid (gel) phase assemblies with concurrent removal of peptide N-terminal and side-chain protecting groups. Generation of Pd black in situ also facilitates peptide deprotection by catalytic transfer hydrogenation in free solution.     

Oligonucleotide synthesis onto poly(N‐acryloylmorpholine‐co‐N‐acryloxysuccinimide): Assessment of the resulting conjugates in a DNA sandwich hybridization test

A water‐soluble statistical poly(N‐acryloylmorpholine‐co‐N‐acryloxysuccinimide) [poly(NAM/NAS)] copolymer was studied for polymer–oligonucleotide (ODN) conjugate elaboration and for further use in diagnostic applications. Three different copolymers were first prepared by free‐radical solution polymerization with different N‐acryloylmorpholine (NAM) and N‐acryloxysuccinimide (NAS) molar ratios (80/20, 70/30, and 60/40). Their number‐average molecular weights ranged from 98,000 to 120,000 g/mol, as determined by aqueous size exclusion chromatography with an online light‐scattering detector. Then, polymer–ODN conjugates were obtained via a strategy consisting of the direct synthesis of ODNs onto polymer chains previously grafted onto a controlled pore glass support. Before the grafting of the polymer onto the solid support, a preliminary step was performed to bind a nucleotide starter along the polymer chain (via the reactive NAS units) to initiate automated DNA synthesis. To multiply the number of ODNs growing from starters, a branched phosphoramidite synthon [bearing two O‐dimethoxytrityl groups] was introduced at the first step of ODN elongation as a short sequence of four branched synthons alternated with three thymidine residues. Conjugates were assessed in a DNA sandwich hybridization test developed for hepatitis B virus detection. Sensitivity limits were evaluated and compared to those obtained with an other polymer, poly(maleic anhydride‐alt‐methyl vinyl ether) [poly(MA/MVE)]. A sensitivity limit of 2.6 × 10⁷ DNA copies/mL was reached with the poly(MA/MVE)–ODN conjugate at the capture phase and with the poly(NAM/NAS)–branched ODN conjugate at the detection phase of the test. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 92: 3784–3795, 2004     

双重改性聚偏氟乙烯膜的制备及血液相容性

以聚偏氟乙烯(PVDF)为基体,以亲水性、生物相容性极佳的丙烯酰吗啉(ACMO)及带强阴离子性磺酸基的2-丙烯酰胺基-2-甲基丙磺酸(AMPS)为功能单体,通过自由基聚合制得PVDF接枝共聚物,并用红外光谱和核磁共振对其进行表征。通过浸没沉淀相转化法制备了共聚物膜,用X射线光电子能谱仪、扫描电子显微镜、接触角测试仪、全自动凝血仪对膜的表面组成、结构形貌、亲水性及血液相容性进行了研究。结果表明,在成膜过程中功能基团均向膜表面偏析,有致孔作用。与纯PVDF膜相比,改性膜的亲水性提高,且能抑制血细胞粘附,其活化部分凝血活酶时间及凝血酶原时间分别延长了7.80 s和2.83 s,纤维蛋白原的浓度从0.897 g/L降低到0.818 g/L,改性后膜的亲水性及血液相容性提高。     

Novel water‐soluble acryloylmorpholine copolymers: Synthesis,characterization, and metal ion binding properties

Poly(4‐acryloylmorpholine), poly(4‐acryloylmorpholine‐co‐2‐acrylamido‐2‐methyl‐1‐propane sulfonic acid), and poly(2‐acrylamido‐2‐methyl‐1‐propane sulfonic acid) were synthesized by radical polymerization. The water‐soluble polymers obtained, containing tertiary amino, amide, and sulfonic acid groups, were investigated, in view of their metal binding properties, as polychelatogens by using the liquid‐phase polymer‐based retention technique, under different experimental conditions. The metal ions investigated were Ag(I), Cu(II), Co(II), Ni(II), Cd(II), Pb(II), Zn(II), Cr(III), and Al(III). © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 101: 180–185, 2006