高产率地合成了八种新的高能盐,它们结合了N碱(胺)和苦味离子,并通过NMR(1 H和13 C),IR光谱,元素分析和差热分析进行了表征。进行了单晶结构研究,以确认盐中的结构,堆积和各种相互作用。有趣的是,盐1和7以不同的多晶型形式存在,并检查了溶剂对多晶型的影响(即溶剂多晶型)。还确定了热稳定性以及冲击和摩擦敏感性,以了解其结构与性能之间的关系。具有肼阳离子的盐3显示出更高的性能(d = 1.82 g cm -3;T d= 255.2℃。D = 7.95 km s -1 ; P = 28.2 GPa;IS≥30 J;FS≥350 N)应用于高能应用。然而,盐4,7,和8也显示出良好的性能的参数,是略好相比于TNT。通过修饰阳离子胺分子和反应物的摩尔比来进行理化性质和性能的调节。
Triethylammonium picrate: An above-room-temperature phase transition material to switch quadratic nonlinear optical properties
作者:Muhammad Adnan Asghar、Jing Zhang、Shiguo Han、Zhihua Sun、Chengmin Ji、Aurang Zeb、Junhua Luo
DOI:10.1016/j.cclet.2017.10.016
日期:2018.2
Abstract To switch quadratic nonlinear optical (NLO) effects has become an exciting branch of the NLO material science. However, solid-state molecular crystals showing tunable and switchableNLO behaviors remain scarce. Here, we report an organic picrate-based binary molecular crystal, triethylammonium picrate (TEAP), which undergoes an above-room-temperature phase transition at Tc = 319 K, being solidly
Synthesis, structural, spectroscopic and optical studies of charge transfer complex salts
作者:Maruthappan Manikandan、Thaiyan Mahalingam、Yasuhiro Hayakawa、Ganesan Ravi
DOI:10.1016/j.saa.2012.08.086
日期:2013.1
(HCON(CH3)2) were synthesized successfully for the first time. Chemical composition and stoichiometry of the synthesized complex salts were verified by CHN elemental analysis. Solubility of the complex salts have been determined by gravimetric method and single crystals of two new salts were grown by low temperature solution growth technique. Crystal system, crystalline nature and cell parameters of the grown
Membranes with bound oligonucleotides and peptides
申请人:MILLIPORE CORPORATION
公开号:EP0305929A2
公开(公告)日:1989-03-08
A method is provided for synthesizing oligonucleotides and peptides directly onto a membrane. The method provides a means for generating membrane affinity supports. A modified membrane for the method of direct synthesis is also provided.