新型可溶性酞菁铜（Ⅱ）衍生物的合成,结构及其成膜性

合成了两个新型取代酞菁铜(Ⅱ)衍生物:四-4-(2-甲氧基乙氧基-羰基)酞菁铜(Ⅱ)(A)和四-4-(2-正丁氧基乙氧基-羰基)酞菁铜(Ⅱ)(B),以元素分析、ESR、~1H NMR和FT-IR进行了表征。UV-vis光谱表明它们在氯仿溶液(10~(-5)～10(-6)mol/L)中主要以双分子缔合形式存在;X-射线粉末衍射表明配合物的分子以倾斜的方式相互平行排列;热重分析表明酞菁环引入有机基团后其热稳定性略有下降,且取代基越长,热稳定性越差。两个配合物的氯仿溶液在亚相(水)上的π-A曲线表明,它们均有明显的“气”液”“固”的变化过程,并能形成较好的单分子层膜。     

杂多酸的硫化作用

以ＩＲ光谱和程序升温硫化方法对近年来催化研究和应用较多的几种杂多酸在Ｈ２Ｓ作用下的硫化过程进行了研究，在ＳｉＷ１２，ＰＷ１２和ＰＭｏ１２三种杂多酸中，ＰＭｏ１２最易发生硫化作用，其两种桥氧化端氧易化的倾向也最大，ＰＷ１２次之，在初始硫化阶段，杂多酸中的部分氧原子在维持其Ｋｅｇｇｉｎ骨架结构情况下被硫原子取代，在这一条件下硫氧交换是可逆的，对于ＰＭｏ１２，可维持其Ｋｅｇｇｉｎ结构的温度接的室温，对于     

杂多酸的固载化研究(II)

研究了以多种方法化学改性的不同活性炭表面化学特性及十二硅钨酸（SiW_(12)）在相应表面的吸附. 首次提出，不同原料来源和改性的活性炭对SiW_(12)的吸附有不同的等温线形式和吸附力. 活性炭表面的羰基有利于SiW_(12)的吸附，而表面的羧基则是不利的．     

杂多酸引发四氢呋喃聚合反应

八十年代中、后期发现，杂多酸（ＨＰＡ）是阳离子聚合反应的良好引发剂［１，２］．ＨＰＡ是一类酸强度比浓硫酸还高的质子酸［３］，不仅具有易于制备，结构稳定，腐蚀性低，易溶于大多数有机溶剂的特点，更为重要的是，ＨＰＡ可以回收和重复使用．因此，ＨＰＡ作为一类...     

纳米金粒子/高分子复合物

纳米金粒子/高分子复合物由于其独特的光、电性能引起了材料工作者的关注.本文介绍了纳米金粒子的制备方法及其高分子复合物的制备过程和原理, 着重综述了纳米金/智能高分子复合物的研究进展.     

空气冷却ICP—AES测定硅锗锡铅磷砷锑铋的检出限

在与小功率全Ａｒ－ＩＣＰ类似的条件下，用空气作冷却气的ＩＣＰ－ＡＥＳ测定硅，锗，锡，铅，磷，砷，锑，铋八种元素５８条谱线的检出限，并与全Ａｒ－ＩＣＰ相比较。结果表明，所测原子线的检出限与波长和激发电位有关，波长较长，激发电位较低的原子线有较好的检出限。测定了常见１０种共存元素对这八种元素灵敏线的谱线干扰。     

Dynamic behavior of polymer surface and the time dependence of contact angle

The increased attention has been focused on the re-searches of soft materials proposed by Pierre-Gilles de Gennes, a Nobel Prize Laureate in Physics. A special issue of “Science” on soft surfaces was published in 2002 to review specific surface properti…     

安替比林基重氮氨基—2,4—二硝基苯与汞（Ⅱ）的显色反应及其应用

本研究了试剂安替比林基重氮氨基－２４－二硝基苯（ＡＰＤＮＢＴ）与汞的显色反应，在Ｔｗｅｅｎ－８０存在下和ｐＨ＝１０．２～１２．３的缓冲溶液中，ＡＰＤＮＢＴ与汞生成黄色络合物，其络合比为Ｈｇ∶ＡＰＤＮＢＴ＝１∶２，建立了以４４５ｎｍ为参比波长，５３８ｎｍ为测量波长的双波长分光光度法，其表观摩尔吸光系数为２．１×１０＾５Ｌ·ｍｏｌ＾－１·ｃｍ＾－１，线性范围是０     

促进物理化学在线教学质量的实践

During the special period in the epidemic COVID-19, the five-step online teaching mode focusing on learning outcome of students has been constructed based on the national high-quality MOOC in physical chemistry and various network technologies (i.e. MOOC class, Tencent QQ group and meeting platform), which is "guide to learn boost, self-study by MOOC, online testing, timely feedback, advanced discussion". It has been demonstrated that diversified online interactive teaching strategies can effectively promote the online teaching quality, through teachers giving full play to the leading roles, encouraging and guiding students to participate in the whole online teaching process.     

High capacity lithium-manganese-nickel-oxide composite cathodes with low irreversible capacity loss and good cycle life for lithium ion batteries

We report a method to eliminate the irreversible capacity of 0.4Li_2MnO_3·0.6LiNi_(0.5)Mn_(0.5)O_2(Li_(1.17)Ni_(0.25)Mn_(0.583)O_2) by decreasing lithium content to yield integrated layered-spinel structures.XRD patterns,High-resolution TEM image and electrochemical cycling of the materials in lithium cells revealed features consistent with the presence of spinel phase within the materials.When discharged to about 2.8 V,the spinel phase of LiM_2O_4(M=Ni,Mn) can transform to rock-salt phase of Li_2M_2O_4(M=Ni,Mn) during which the tetravalent manganese ions are reduced to an oxidation state of 3.0.So the spinel phase can act as a host to insert back the extracted lithium ions(from the layered matrix) that could not embed back into the layered lattice to eliminate the irreversible capacity loss and increase the discharge capacity.Their electrochemical properties at room temperature showed a high capacity(about 275 mAh g~(-1) at 0.1 C) and exhibited good cycling performance.