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含二硒聚碳酸酯自组装胶束的制备及其性能
二硒 聚碳酸酯 胶束 释药
2022/3/29
研究了没食子酸辛酯标准样品的制备、均匀性和稳定性及其定值试验。将没食子酸辛酯工业品用无水乙醇溶解,再用纯水稀释后重结晶,得到高纯度的没食子酸辛酯标准样品。没食子酸辛酯含量测定采用液相色谱面积归一化法。所研制的没食子酸辛酯标准样品通过了均匀性检验和稳定性检验(6个月)。经定值检测,该标准样品的质量分数为 99.472 0%,不确定度为 0.03%。
利用原子转移自由基聚合方法合成了端基具有一个卤素的聚苯乙烯, 并通过叠氮化反应得到端基为叠氮基团的聚苯乙烯. 利用叠氮基与单壁或复壁碳纳米管的反应, 将聚苯乙烯接到碳纳米管的表面上, 实现了碳纳米管的化学修饰. 通过FTIR, XPS, TEM, UV和Raman光谱等技术证明了聚苯乙烯以共价键形式结合到碳纳米管表面上. 利用TGA估算出连接在碳纳米管上的聚苯乙烯的含量, 并推测出复壁碳纳米管中较...
Synthesis and Properties of Novel Photosensitive Poly(amide-imide)s Containing Chalcone Moiety and Aromatic Diamines in the Main Chain
Chalcone moiety poly(amid-imide)s 4,4'-diamino chalcone 1,3-bis[4,4'-bis(trimellityimido) phenyl]-2-propenone
2010/4/13
Six new poly(amide-imide)s were synthesized by the polycondensation reaction of 1,3-bis[4,4'-bis(trimellityimido) phenyl]-2-propenone (6) with 3,3'-diamino diphenyl sulfone (7a), 4,4'-diamino diphenyl...
One-Step Synthesis of Hyaluronic Acid-Based (Sub)micron Hydrogel Particles: Process Optimization and Preliminary Characterization
Hyaluronic acid (Sub)micron particles Drug delivery Biomaterials Biodegradable polymer Microgel Nanogels
2010/4/16
Hyaluronic acid (HA)-based (sub)micron hydrogel particles were synthesized by crosslinking virgin HA with divinyl sulfone (DVS) in sodium bis(2-ethylhexyl)sulfosuccinate (AOT) reverse micelle systems ...
采用以均苯三甲酸为内核的树形分子(DT)模板法,原位制备AgI纳米簇,得到AgI/ DT纳米复合材料.研究了AgI纳米簇生成过程中的各种影
响因素,并用紫外-可见光谱、荧光光谱、透射电镜等对所制备的纳米簇进行表征.实验发现,在中性条件下,DT4.5本身有较强的荧光,当与银离子络合后,其荧光强度明显降低,而生成AgI/DT4.5后,荧光强度进一步降低,同时出现由于AgI纳米簇表面电荷转移所产生的新...
Analysis of Nanoparticle Transmission Electron Microscopy Data Using a Public- Domain Image-Processing Program, Image
Nanoparticles Particle size distributions Transmission Electron Microscopy Image analysis Image (NIH-Image Scion Image Image J) Histograms
2010/4/19
The need to easily and quickly count larger numbers of nanoparticles, in order to obtain statistically useful size and size-distribution data, is addressed via the use of a readily available, free, pu...