Single-crystal-like organic heterojunction with 40 nm thick charge accumulation layers

Single-crystal-like organic heterojunction films of copper phthalocyanine (CuPc) and copper-hexadecafluoro-phthalocyanine (F16CuPc) were fabricated by weak-epitaxy-growth method. The intrinsic properties of organic heterojunction were revealed through threshold voltage shift of field-effect transistors and measurement of single-crystal-like diodes. At both sides of the heterojunction interface 40 nm thick charge accumulation layers formed, which showed that the long carriers' diffusion length is due to the high crystallinity and low density of deep bulk traps of single-crystal-like films.

有机-无机自由基盐(DBTTF)_6PMo_(12)O_(40)·2H_2O的合成、性质和晶体结构

用电解法制备了有机－无机自由基盐（ＤＢＴＴＦ）６ＰＭｏ１２Ｏ４０·２Ｈ２Ｏ．用红外光谱、电子光谱和电子自旋共振谱进行了表征，测定了其磁化率、导电性和单晶的晶体结构．该晶体属三斜晶系，Ｐ１空间群．晶胞参数为ａ＝１．３７８７（７）ｎｍ，ｂ＝１．４２０４（２）ｎｍ，ｃ＝１．５７０２（２）ｎｍ，α＝１０４．５７０（８）°，β＝１０３．４１（２）°，γ＝９５．８０（２）°，Ｖ＝２．８５３（２）ｎｍ３，Ｚ＝１，Ｄｃ＝２．１４２Ｍｇ·ｍ－３，Ｒ＝０．０７２７．

杂多酸的固载化Ⅲ．溶剂对H_4SiW_（12）O_（40）·24H_2O在活性

研究了Ｈ＿４ＳｉＷ＿（１２）Ｏ＿（４０）·２４Ｈ＿２Ｏ（ＳｉＷ＿（１２））在水、乙醇、乙酸、乙酸丁酯中在活性炭上的吸附得出，活性炭微孔结构对ＳｉＷ＿（１２）在其表面的吸附起着分子筛作用。水溶剂化的ＳｉＷ＿（１２）分子可顺利进入活性炭１．７ｎｍ左右的微孔，而其它溶剂化的ＳｉＷ＿（１２）分子，则需较大的孔径。提出了ＳｉＷ＿（１２）在活性炭表面吸附的微孔中孔扩散模型。

STUDIES ON ORGANOLANTHANIDE COMPLEXES .40. SYNTHESIS AND X-RAY STRUCTURE OF BIS (2-METHOXYETHYLCYCLOPENTADIENYL) YTTRIUM AND YTTERBIUM TETRAHYDROBORATES

New bis (2-methoxyethylcyclopentadienyl) yttrium and ytterbium tetrahydroborates (Ln = Y, 1; Yb, 2) have been synthesized in good yield by the reaction of bis (2-methoxyethylcyclopentadienyl) lanthanide chlorides (Ln = Y, Yb) with sodium borohydride in THF at room temperature. The title complexes were characterized by elemental analyses, MS, H-1 NMR and IR spectra. The crystal structures of 1 and 2 have been determined by X-ray diffraction. 1 crystallizes from THF-n-Hexane in space group Pna2(1) with unit cell parametert: a = 1.2390(3), b = 1.1339(2), c = 1.1919 (2) nm and V = 1.6745(6) nm3 with z = 4 for D(c) = 1.39 g.cm-3.The structure was solved by direct method and refined to final R = 0.061 (for 1730 observed reflections). The Space group of 2 is Pna2(1) with unit cell parameters: a = 1.2399(6), b = 1.1371(5), c = 1.1897(2) nm and V = 1.6773(1) nm3 with z = 4 for D(c) = 1.72 g.cm-3, R = 0.038 (for 2157 observed reflections). The X ray structures and IR reveal the bidentate yttrium and ytterbium tetrahydroborate complexes with the intramolecular coordination bonds between lanthanide metal and ligand oxygen atoms.

杂多化合物催化性能的研究 在相转移条件下Na_2HPW_(12)O_(40)在苯乙烯氧化反应中的催化作用

杂多化合物既有配合物和金属氧化物的结构特征,又有强酸性和氧化还原性。它是具有氧化还原和酸催化功能的双功能催化剂。另外,它还具有结构确定、再生速度快、活性高、不腐蚀设备和污染少等优点,被认为是继分子筛之后,最有研究价值和开发前景的催化剂之一。

固熔体60%NaAlSi_2O_6-40%CaMgSi_2O_6在高温高压下的相图的研究

在1.0～5.0GPa、700～1750℃条件范围内,对固熔体0.6NaAlSi_2O_6-0.4CaMgSi_2O_6进行了研究,探讨了该固熔体在高温高压下的存在行为,研究了由非晶态玻璃向翡翠转化过程中γT作用的相图,得到的透辉石翡翠的晶胞参数为α=0.9439nm,b=0.8573nm,c=0.5233nm,β=107.28°和V=0.41702nm~3。本实验中合成的宝石级翡翠为色泽温润,具有玻璃光泽,半透明的极富观赏性的透辉石翡翠。

杂多酸盐K_4H(SiMo_(11)VO_(40))·14H_2O的合成及晶体结构

杂多酸是种类多,应用广的重要的无机化合物。其中有一类是12-系列化合物Z,(XM_(12-n)M_n′O_(40))·mH_2O,中心离子X可以是过渡元素或非过渡元素;M常是Mo、W;M′为V_(5+)、Mn_(2+)、CO_(2+)等;n=0,1,2…;Z为H~+或一价阳离子;y=1,2,…。它们同其相应氧化型化合物比较具有引人注目的特性,但迄今尚未见到还原型化合物晶体结构文章,只是

杂多酸盐K_4H[SiMO_(11)VO_(40)]·18H_2O 1和K_4H_2[PMo_9V_3O_(40)]·18H_2O 2的晶体结构

杂多酸是种类多,应用广的重要的无机化合物。其中有一类是12-系列化合物Z,(XM_(12-n)M_n′O_(40))·mH_2O,中心离子X可以是过渡元素或非过渡元素;M常是Mo、W;M′为V_(5+)、Mn_(2+)、CO_(2+)等;n=0,1,2…;Z为H~+或一价阳离子;y=1,2,…。它们同其相应氧化型化合物比较具有引人注目的特性,但迄今尚未见到还原型化合物晶体结构文章,只是

K_4H_2[PMo_9V_3O_(40)]·10H_2O的合成及其晶体结构

采用低温技术,用 X 射线单晶衍射法测定了标题化合物的结构.晶体属 P4/mnc 空间群,a=12.515(3),c=17.636(7),Z=2.用788个独立可观测反射精修所有结构参数得 R=0.061.钼钒磷杂多酸阴离子中,PO_4四面体是无序的,P—O 键长1.54.M(Mo,V)是6配位,M—O 键长1.62—2.48.K 是7配位,K—O 键长2.84—3.10.

祁连山海北高寒湿地40～80cm土壤温度状况观测分析

海北高寒湿地土壤水分达超饱和状态,土体热容量大,因而地温在随时间进程中变化平稳,日、年较差较小. 年内季节冻土并不深厚,多维持于1 m 左右,小于高山草甸土分布区. 由于50 cm 层次年平均地温仅为1. 2 ℃,暖季的6～9 月平均为2. 8 ℃左右. 因此,按温度诊断特点来看,该类型高寒湿地土在中国土壤分类中属寒冷性土壤温度状况,仍为正常有机土.

长石及其伴生矿物的~(40)Ar/~(39)Ar法对比研究

~(40)Ar-~(39)Ar法是继K-Ar法后发展起来的一个新的年代学分支，自1962年Sigurgeirssion正式提出~(40)Ar-~(39)Ar计时理论以来，经C. M. Merrihue, G. Turner, G. B. Dalrymple, M. A. Lanphere, I. McDougall, J. G. Mitchell等人的不断改造和完善，现已发展成为一门较为成熟的学科。~(40)Ar-~(39)Ar法以其独特的优点而倍受地质学家的偏爱，其中阶段加热技术是~(40)Ar-~(39)Ar法得以广泛应用的关键，它不仅可以提供一般的年代学资料，同时，还提供诸如样品的受热历史、过剩Ar、封闭温度以及岩体的隆起速率等许多信息。近十年来，对这一领域的研究，无论是在理论方面，还是在实验技术方面，都取得了可喜的进展。

Program: a record of the first 40 years of electronic library and information systems

Tedd, L.(2006). Program: a record of the first 40 years of electronic library and information systems. Program: electronic library and information systems,40(1), 11-26.

40 years of library and information studies education in Wales

Tedd, L.A. (2005). 40 years of library and information studies education in Wales. Education for Information, 23(1/2), 1-8.

Femina (Trinity College, Cambridge MS B.14.40) : edited with an Introduction and Notes

Rothwell, W., Femina (Trinity College, Cambridge MS B.14.40); edited with an Introduction and Notes (The Anglo-Norman On-Line Hub, 2005) RAE2008

The United Methodist Church at 40: What Can We Hope For?

The necessity we face for the future of Methodism is the re-invention of traditions. To re-invent traditions is to re-visit the past with all of its richness; to discern what in our tradition is most central to Christian faith; to analyze those parts of our past that continue to give life; to discern and build upon what is of value in the newly emerging tradition; and to reflect on those aspects of the neglected and rejected past that challenge our present perspectives and practices. To re-invent traditions is to develop new perspectives and practices from the building blocks of the past and from the fresh movements of the Spirit in the present. To do so is to recognize that Christianity in general, and Methodism in particular, is marked by traditions that have continually been passed on, critiqued, eliminated, created, and re-invented for the sake of a living Christian witness. What we can hope for is that God is there in the future already, pulling us toward God’s own New Creation.