Thickness Dependent Behavior of Photoluminescence of Tris(8-hydroxyquinoline)Aluminum Film

In situ thickness dependent photoluminescence （PL） measurements of tris（8-hydroxyquinoline） aluminum（Alq3） film were performed. At the beginning of Alq3 deposition on the glass substrate, the Alq3 emission showed a sharp red-shift. Further deposition of Alq3 resulted slight red-shift, and finally tended to saturated value. The total red-shift of about 12 nm was observed for the Alq3 film thickness range from 2 to 500 nm.This red-shift was attributed to the change from the 2D to 3D exciton state with increasing Alq3 film thickness. Meanwhile, the PL intensity of Alq3 emission increased continuously, and showed a rate change at the initial deposition of Alq3 due to non-rediative decay of excitons arised from the interaction between excitons and the substrate, and finally tended to saturation with the Alq3 thickness.

Thermochemical Study on Coordination Complex of Samarium with Salicylic Acid and 8-Hydroxyquinoline

The coordination complex Sm（C7H5O2）2·（C9H6NO）, synthesized from the reaction of samarium chloride sixhydrate with salicylic acid and 8-hydroxyquinoline, was characterized with IR, elemental analysis, molar conductance, and thermogravimatric analysis. The standard molar enthalpies of solution of [ SmCl3·6H2O （s） ], [ 2C7H6O3 （s） ], [ C9H7NO （ s ） ] and [ Sm （C7H5O3） 2·（ C9H6NO ） （ s ） ] in the calorimetric solvent were determined with the solution-reaction isoperibol calorimeter at 298.15 K to be △sHm^- [ SmCl3·6H2O （s）, 298.15 K ] = - 103.98 ± 0.04 kJ·mol^-1, △sHm^- [2 C7H6O3 （s）, 298.15 K] = 16.35±0.14 kJ·mol^-1,△sHm^-[C9H7NO （s）, 298.15 K] = -6.11±0.08 kJ·mol^-1 and △sHm^-[Sm（C7H5O3）2·（C9H6NO） （s）, 298.15 K] = - 130.08 ± 0.04 kJ·mol^-1, respectively. The enthalpy was determined to be △rHm^- = 89.59 ±0.18 kJ·mol^-1 for the reaction SmCl3·6H2O（s） ＋ 2C7H6O3（s） ＋ C9H7NO（s） = Sm （C7H5O3） 2·（C9H6NO） （ s ） ＋ 3HCl （g） ＋ 6H2O （ l ）. According to the above results and the data given in literature and through Hess＇ law, the standard molar enthalpy of formation of Sin（ C7H5O3 ）2·（C9H7NO）（s） was estimated to be △rHm^- [ Sm （C7H5O3）2·（C9H6NO） （s）, 298.15 K] = - 2055.9 ± 3.03 kJ·mol^-1.

Crystal Structure and Characterization of a Binuclear Cd(Ⅱ) Quaternary Coordination Complex [Cd_2(phen)_2Q_2(BP)]_n(phen=1,10-Phenanthroline,BP = Biphenyl-4,4'-dicarboxylic acid,Q=8-Hydroxyquinoline Anion)

The structure of a binuclear cadmium（Ⅱ） quaternary complex, [Cd2（phen）2- Q2（BP）]n 1 （phen = 1,10-phenanthroline, BP = biphenyl-4,4′-dicarboxylic acid, Q = 8-hydroxy- quinoline-anion）, has been determined by X-ray crystallography and characterized by elemental analysis, IR spectrum and thermogravimetric analysis. It crystallizes in the monoclinic system, space group P21/n with a = 13.1906（18）, b = 10.9623（15）, c = 16.947（2）A, β = 111.3430（10）°, V = 2282.5（5）A^3, Z = 4, Mr = 556.85, Dc = 1.620 g/cm^3, F（000） = 1116,μ= 0.994 mm^-1 and S = 1.056. In the structure, 1D chains are connected via biphenyl-4,4′-dicarboxylic acid, 8-hydroxy quinoline anion and binuclear cadmium atoms into an infinite 1-D molecular chain architecture. Via aryl ring π-π stacking interactions a supramolecular structure is formed in 1.

Synergistic extraction of praseodymium with 2-ethylhexyl phosphonic acid mono-2-ethylhexyl ester and 8-Hydroxyquinoline

The synergistic extraction of Pr^3＋ from hydrochloric medium using mixture of 2-ethylhexyl phosphonic acid mono- 2-ethylhexyl ester （P507, HL） and 8-Hydroxyquinoline （HQ） in heptane was investigated. The effect of equilibrium of aqueous acidity on extraction of Pr^3＋ was discussed. The effect of extractant concentraction, different diluents, equilibrium time and acetate ion concentration oil extraction reaction were also studied. With a method of double-logarithmic slope, composition of the extracted species on 2-ethylhexyl phosphonic acid mono-2-ethylhexyl ester and 8-Hydroxyquinoline was derived. The result shows that the synergistic extraction system not only overcomes emulsification of 8-Hydroxyquinoline, but also shows perfect capacity of synergistic extraction. The largest synergistic enhancement factor can be calculated to be 5.49 at pH 3.6 for Pr^3＋.

Bipolar resistive switching based on bis(8-hydroxyquinoline) cadmium complex:Mechanism and non-volatile memory application

Stable and persistent bipolar resistive switching was observed in an organic diode with the structure of indium-tin oxide （ITO）/bis（8-hydroxyquinoline） cadmium （Cdq2）/Al. Aggregate formation and electric field driven trapping and detrapping of charge carriers in the aggregate states that lie in the energy gap of the highest occupied molecular orbital （HOMO） and the lowest unoccupied molecular orbital （LUMO） of the organic molecule were proposed as the mechanism of the observed bipolar resistive switching, and this was solidly supported by the results of AFM investigations. Repeatedly set, read, and reset measurements demonstrated that the device is potentially applicable in non-volatile memories.

A Hydrogen Bond Stabilized 3D Network Built from Pyrazine-2,3,5,6-tetracarboxylic Acid and 8-Hydroxyquinoline

8-Hydroxyquinoline salt of pyrazine-2,3,5,6-tetracarboxylic acid [HQ]2[H2pztc]· 2H2O （1） was prepared and characterized by single-crystal X-ray diffraction, NMR, IR, TGA, elemental analysis and fluorescent measurements. Compound 1 crystallizes in orthorhombic, space group Pbcn with a = 9.953（3）, b = 15.966（3）, c = 16.081（5） A, V = 2555.5（13） A3, Z = 4, μ = 0.122 mm^-1, Dc = 1.514 Mg/m3, T= 296（2） K, C26H22N4O12, Mr = 582.48, F（000） = 1208, S = 1.006, R = 0.0448 and wR = 0.1149. Compound 1 has a three-dimensional （3D） network, in which pyra- zine-2,3,5,6-tetracarboxylic acids build up two-dimensional （2D） sheets and 8-hydroxyquinoline cations and water molecules act as pillars to connect the 2D sheets into an extended 3D network through strong intermolecular hydrogen bonding and π…π stacking interactions. Especially, a very short O-H…O hydrogen bond （O…O 2.470（2） A） between two neighboring [H2pztc] anions was observed.

Theoretical Studies on the Ground State and Excited State of 2,7′- （Ethylene）-bis-8-hydroxyquinoline

2,7′-（Ethylene）-bis-8-hydroxyquinoline was optimized with DFT/B3LYP and ab initio HF methods, so ion- ization potential and electron affinity could be determined. Absorption spectrum was calculated by ZINDO and TD-DFT. CIS method was used to calculate the S1 excited states of the compound and afterwards the emission spectrum was computed. When the solvent effect was taken into account, the computed results show encouraging agreement with known experimental data. The results of analyzing the relationship between the energies and absorption spectra indicate that the ability to transporting electrons is strengthened compared with 8-hydroxyquinoline and that absorption and emission spectra are red-shifted. The intramoleeular reor- ganization energy of tris（2,7′-（ethylene）-bis-8-hydroxyquinoline）-aluminum implies its electron transporting property is worse than tris（8-hydroxyquinoline）-aluminum. The predicted maximum emission wavelength is red-shifted compared with tris（8-hydroxyquinoline）-aluminum.

Synthesis and Structural Characterization of [Co(Q)_2(H_2O)_2](Q=8-Hydroxyquinoline Ion)

The single crystal of bi（8-hydroxyquinoline） bihydrated cobalt （Ⅱ） complex, [ Co（Q）2 （H2O2 ] （Q = 8-hydroxyquinoline ion）, has been synthesized by general method and structurally characterized by single crystal X-ray diffraction. Crystal data： C18H16CoN2O4, monoclinic, C2/c, α = 1.336 2（4） nm, b = 0.941 2（3） nm, c = 1.354 3（4） nm, β= 109.672（4）°, Z = 4. In the complex, Co（ Ⅱ ） ion is six-coordinated, forming a distorted octahedron. H-bonding and π-π stacking interaction play a significant role to form and stabilize the three-dimensional structure.

ABSORPTION SPECTRA OF 4f ELECTRON TRANSITIONS OF NEODYMIUM COMPLEX WITH 8-HYDROXYQUINOLINE AND OCTYLPHENOL POLY(ETHYLENEGLYCOL)ETHER

In this paper the absorption spectra of 4f electron transitions of the neodymlum complex with 8-hydroxyquinoline and octylphenol poly(ethyleneglycol)ether have been studied. The marked intensification of the band at low octylphenol poly(ethyleneglycol)ether concentration is found normally at 575 nm, and its resolution into three sharp bands centering at 572, 580 and 584 nm. The absorbances of the absorption maxima are 3.5 (at 572 nm), 7.2 (at 580 nm) and 10.2 (at 584 nm) times greater than that of the chloride.

姬塬地区长8油层组储层特征分析

为确定长8油层储层现今表征,储层物性受黏土矿物胶结物控制模式,储层沉积作用和沉积后期所经历的成岩变化,通过铸体薄片、扫描电镜等方法研究了储层基本特征和成岩作用及沉积作用,在整体低渗的背景下,部分位于相对渗透率较高区域的油井有较高的产量,理清研究区长8储层富集规律,对地区内岩石孔隙度下降因素进行剖析。结果表明,姬塬地区有利储层多发育水下分流河道和河口坝沉积,特别是砂体中心部位储层物性是最好,可见长8油层组的储集性能和渗流性能好,即粒间孔型、粒间孔+溶孔型和溶孔+粒间孔型。溶孔型、粒间孔+微孔型两种孔隙组合类型的渗流性能较差。微孔型和溶孔+微孔型两种孔隙组合类型的储集空间主要由半径极小的微孔构成,连通性较差,其孔隙内表面积和渗流阻力,储集性能和渗流性能较差。

Sedimentary facies and depositional model of shallow water delta dominated by fluvial for Chang 8 oil-bearing group of Yanchang Formation in southwestern Ordos Basin,China

A systematic analysis of southwestern Ordos Basin's sedimentary characteristics,internal architectural element association styles and depositional model was illustrated through core statistics,well logging data and outcrop observations in Chang 8 oil-bearing group.This analysis indicates that shallow water delta sediments dominated by a fluvial system is the primary sedimentary system of the Chang 8 oil-bearing group of the Yanchang Formation in southwestern Ordos Basin.Four microfacies with fine grain sizes are identified: distributary channels,sheet sandstone,mouth bar and interdistributary fines.According to the sandbody's spatial distribution and internal architecture,two types of sandbody architectural element associations are identified: amalgamated distributary channels and thin-layer lobate sandstone.In this sedimentary system,net-like distributary channels at the delta with a narrow ribbon shape compose the skeleton of the sandbody that extends further into the delta front and shades into contiguous lobate distribution sheet sandstone in the distal delta front.The mouth bar is largely absent in this system.By analyzing the palaeogeomorphology,the palaeostructure background,sedimentary characteristics,sedimentary facies types and spatial distribution of sedimentary facies during the Chang 8 period,a distinctive depositional model of the Chang 8 shallow water fluvial-dominated delta was established,which primarily consists of straight multi-phase amalgamated distributary channels in the delta plain,net-like distributary channels frequently diverting and converging in the proximal delta front,sheet sandstones with dispersing contiguous lobate shapes in the distal delta front,and prodelta or shallow lake mudstones.

Preparation and Characterization of Carboxyl Functionalized Fluorescent Mesoporous Silica Nanoparticles Containing 8-Hydroxyquinolinate Zinc Complexes

Fluorescent mesoporous silica nanoparticles functionalized with carboxyl group(Znq-CMSCOOH) were successfully synthesized by in situ formation route of 8-hydroxyquinolinate zinc complexes in channels of mesoporous silica nanoparticles and post-grafting of carboxyl group on the surface. Moreover,the particle size and structural properties of Znq-CMS-COOH were characterized by transmission electron microscopy(TEM),field emission scanning electron microscopy(FE-SEM),dynamic light scattering(DLS),Fourier transform infrared spectroscopy(FT-IR),UV-vis spectrometer, fluorescence spectrometer and nitrogen adsorption-desorption measurements. The obtained results suggest that the Znq-CMS-COOH presents the uniform spherical shape with the mean diameter of about 85 nm and the obvious wormhole arrangement mesoporous. In addition, the Znq-CMS-COOH possesses green fluorescence with the emission peaks at 495 nm. So the Znq-CMS-COOH, which is beneficial to further modification and tracing, might be a great potential carrier for applying in drug delivery system in the future.

Entanglement of E8E8 Exceptional Lie Symmetry Group Dark Energy, Einstein’s Maximal Total Energy and the Hartle-Hawking No Boundary Proposal as the Explanation for Dark Energy

The present note is concerned with two connected and highly important fundamental questions of physics and cosmology, namely if E8E8 Lie symmetry group describes the universe and where cosmic dark energy comes from. Furthermore, we reason following Wheeler, Hartle and Hawking that since the boundary of a boundary is an empty set which models the quantum wave of the cosmos, then it follows that dark energy is a fundamental physical phenomenon associated with the boundary of the holographic boundary. This leads directly to a clopen universe which is its own Penrose tiling-like multiverse with energy density in full agreement with COBE, WMAP and Type 1a supernova cosmic measurements.

高迁移率族蛋白B1对甲苯二异氰酸酯诱导的支气管上皮细胞中性粒细胞趋化因子CXCL12、IL-8表达的影响

目的通过体外实验探讨高迁移率族蛋白B1(high mobility group box 1,HMGB1)在甲苯二异氰酸酯(toluene diisocyanate,TDI)所致的职业性哮喘中趋化中性粒细胞的作用机制。方法制备TDI-人血清白蛋白(human serum albumin,HSA)偶联物(TDI-HSA),并通过Gutmann法与BCA法分别测定偶联物中TDI及HSA含量。分别以0、40、80、120 mg/L TDI-HSA染毒人支气管上皮细胞(human bronchial epithelial cells,HBECs)12 h,ELISA法检测细胞培养上清中白细胞介素-8(interleukin-8,IL-8)、趋化因子12(C-X-C motif chemokine 12,CXCL12)的水平;Western blot法检测细胞中HMGB1、CXCL12及核因子κB(nuclear factor kappa-B,NF-κB)相关蛋白的表达;活细胞荧光探针法检测活性氧(reactive oxygen species,ROS)的水平;免疫荧光法观察HMGB1的核转位情况。使用不同浓度(100、200 mmol/L)甘草素(glycyrrhizin,GL)预处理HBECs细胞24 h抑制HMGB1后,继续用TDI-HSA染毒12 h,检测细胞培养上清中IL-8水平,HMGB1、CXCL12及NF-κB相关蛋白表达,ROS释放水平及HMGB1的核转位情况。结果不同浓度TDI-HSA染毒HBECs 12 h后,随着染毒浓度的升高,HBECs细胞内HMGB1发生明显核转位,细胞中ROS和细胞上清中IL-8水平明显增加,差异有统计学意义(P<0.05);与对照组相比,120 mg/L染毒组HBECs细胞HMGB1、磷酸化P65蛋白表达显著增加,差异有统计学意义(P<0.05)。以含有不同浓度GL的培养基联合120 mg/L TDI-HSA处理HBECs细胞12 h后,与对照组相比,GL作用于HBECs细胞可显著抑制TDI-HSA导致的HMGB1的核转位,抑制HBECs细胞中的ROS和上清液中的IL-8水平的升高,显著减少细胞中HMGB1、磷酸化P65蛋白的表达,差异有统计学意义(P<0.05)。结论TDI可通过增加HBECs细胞HMGB1蛋白表达和核转位,激活NF-κB,促进IL-8的释放,不影响CXCL12的表达。GL可通过降低HMGB1表达,抑制NF-κB活化,减少IL-8释放水平。

基于8-氨基喹啉导向的钴催化吲哚氘代反应研究

同位素标记在药物发现过程中发挥着关键作用,它能提高潜在药物分子的性能,应用前景广阔。通过金属催化的C—H活化,H/D交换已被广泛采用为合成同位素标记化合物的关键方法,允许氘的后期掺入,从而避免使用昂贵的标记起始材料。与其他方法相比,过渡金属介导的H/D交换反应相对温和的反应条件和对大量官能团的高耐受性,避免了不常见的副反应。本研究在8-氨基喹啉导向钴催化剂的作用下,氧化银作为催化剂,苯甲醚作为溶剂,氘代乙酸作为氘代试剂在反应温度为100℃时,反应12 h,实现了吲哚酰胺的位置选择性氘代反应,该方法反应条件温和,操作简单,有广泛的底物范围。

长链非编码RNA母系表达基因8通过微小RNA-495-3p调控急性髓性白血病细胞高迁移率族蛋白A1表达及对细胞增殖、凋亡的作用机制研究

目的:探讨长链非编码RNA(lncRNA)母系表达基因8(MEG8)通过微小RNA-495-3p(miR-495-3p)调控急性髓性白血病细胞(AML)高迁移率族蛋白A1(HMGA1)表达及对细胞增殖、凋亡的机制。方法:选取50例经确诊为AML患者的骨髓活检标本与52例健康骨髓捐赠者骨髓标本,常规培养人AML细胞株HL-60,采用实时荧光定量PCR(RT-qPCR)法骨髓单个核细胞中lncRNA MEG8 mRNA表达。将HL-60细胞分为六组,即HL-60组(HL-60细胞)、si-NC组(转染si-NC)、si-lncRNA MEG8组(转染si-lncRNA MEG8)、mimic-NC组(转染mimic-NC)、miR-495-3p mimic组(转染miR-495-3p mimic)、si-lncRNA MEG8+miR-495-3p mimic组(转染si-lncRNA MEG8+miR-495-3p mimic),CCK-8法检测培养24、48、72 h各组细胞增殖能力,流式细胞术检测细胞凋亡,Western blot法检测细胞中HMGA1表达,双荧光素酶报告基因实验验证lncRNA MEG8、miR-495-3p、HMGA1之间的关系。结果:与对照组相比,观察组lncRNA MEG8 mRNA表达升高(P<0.05)。与miR NC+MEG8 WT组比较,miR-495-3p mimic+MEG8 WT组荧光素酶活性下降(P<0.05),与miR NC+HMGA1 WT组比较,miR-495-3p mimic+HMGA1 WT组荧光素酶活性下降(P<0.05)。与HL-60组、si-NC组、mimic-NC组比较,si-lncRNA MEG8组、miR-495-3p mimic组和si-lncRNA MEG8+miR-495-3p mimic组24、48 h细胞增殖能力均显著下降,si-lncRNA MEG8+miR-495-3p mimic组细胞增殖率最低(P<0.05)。与HL-60组、si-NC组和mimic-NC组比较,si-lncRNA MEG8+miR-495-3p mimic组HL-60细胞凋亡率高于si-lncRNA MEG8组和miR-495-3p mimic组(均P<0.05)。与HL-60组、si-NC组和mimic-NC组比较,si-lncRNA MEG8+miR-495-3p mimic组HMGA1蛋白表达低于si-lncRNA MEG8组和miR-495-3p mimic组(均P<0.05)。结论:沉默lncRNA MEG8可能通过上调miR-495-3p来下调HMGB1,来抑制HL-60细胞的恶性生物学行为,可为探索AML潜在治疗靶点提供了新思路。

鄂尔多斯盆地西南部上三叠统延长组长8、长6油层组的沉积体系与物源方向

野外露头剖面的岩石学与岩相组合,沉积特征与相标志,古流向测定,室内砂岩的骨架矿物、重矿物组合及其平面分布规律的研究结果表明:鄂尔多斯盆地西南部上三叠统延长组长8油层组是以线状或点状物源为特征的一套近源快速堆积的冲积扇与扇三角洲沉积体系,形成于盆地由快速拗陷转入逆冲负荷沉降期间。长8沉积期盆地西南部的古水流与物源主要来自盆地西南方向,其次为西北和东南方向。长6油层组沉积期,盆地内部底床下沉作用减缓,湖盆开始收缩,湖盆西岸除北部有少量扇三角洲沉积外,主要为辫状河三角洲沉积;而盆地东北部与东部的沉积作用大大加强,致使在盆地东部形成一系列大型曲流河三角洲沉积体系,至盆地西南部相变为半深湖—深湖相与浊流相沉积。长6沉积期古水流除来自西南、西北和东南方向外,还有来自北东和正东方向的次要物源,它们在盆地西南部悦乐—玄马—板桥—固城—合水一带汇合,使该地带成为混合物源区。

汶川强震区群发性泥石流特征研究——以四川省都江堰龙池“8·13”群发泥石流为例

汶川地震导致大量崩塌和滑坡等次生地质灾害,为泥石流发生提供了丰富的物源,强降雨过后,汶川强震区的群发性泥石流出现了高发区。在2008-2010年的三个雨季里,强震区暴发了多处群发性泥石流灾害,龙池所在的龙溪河流域"8·13"群发泥石流灾害就是其中之一。首先对龙池龙溪河流域2010年8月13日暴发的45条泥石流沟进行简单的灾害阐述,其次在调查数据的基础上阐述了群发泥石流的特征:①成因多样,主因为地震和降雨综合的作用;②规模不一,以中小型为主,流体性质多集中为过渡性—粘性;③隐蔽性强,泥石流活动多集中在极小流域,主要为沟谷型泥石流;④泥石流活动集中在断裂带附近;⑤危害方式以冲蚀、淤埋和堵塞河道为主,且具有灾害链作用和叠加-放大作用。最后针对震区群发泥石流的活动特征,提出增强减灾措施的针对性。

鄂尔多斯盆地中西部长8砂岩的流体包裹体特征与油气成藏期次分析

利用流体包裹体的分析测试技术与研究方法，对鄂尔多斯盆地中西部长8油层组的成藏期次进行了研究。烃类包裹体及其伴生的盐水包裹体的岩相学特征、均一温度、盐度、密度及成分分析显示，长8储层主要发育两期烃类包裹体，第一期分布在早期方解石胶结物、石英颗粒表面及其连生的石英加大边中以及未切穿石英颗粒的早期愈合裂缝中，其伴生盐水包裹体的均一温度峰值为80～90℃；第二期烃类包裹体分布在石英颗粒表面和切穿石英颗粒的裂缝中，其伴生盐水包裹体的均一温度峰值为100～120℃。储层成岩作用与油气充注微观分析、成岩一烃类充注演化时间序列研究，结合地层埋藏史和热史分析表明，研究区经历了三期烃类充注事件：第一期（约169～161Ma）充注规模小，砂岩中未捕获到这一期适合进行均一温度与成分测定的烃类包裹体，因此本研究缺乏这期包裹体的温度与成分数据；第二期（约148～135 Ma）烃类充注对应前述获得均一温度与成分数据的第一期烃类包裹体；第三期烃类充注规模最大，发生在早白垩世晚期的125．2～105．7 Ma之间，为主成藏期，对应前述获得均一温度与成分数据的第二期烃类包裹体。

鄂尔多斯盆地西南部镇泾地区长8油层组致密储层评价

综合鄂尔多斯盆地西南部镇泾地区延长组长8油层组的岩心、薄片、孔渗及压汞测试等资料,在长8储层结构、储层质量发育控制因素研究基础上,对长8低渗致密砂岩储层进行了分类评价。结果表明,长8砂岩储层发育低孔-特低渗储集物性,储层孔隙结构具有细-微孔喉、排驱压力大、分选差的特征,主要可分为3种类型,其中发育Ⅰ型曲线储层孔渗性最好。沉积作用形成的物质基础决定了储层原始孔渗性能,其中分流河道及水下分流河道具最优孔渗性能;成岩作用中,压实作用是储层储集性能破坏的主要因素;溶蚀作用起建设性改善作用。选取孔隙度、渗透率、孔隙排驱压力、中值压力和中值孔喉半径等主要储层参数进行聚类分析,将长8储层划分为3种类型:Ⅰ类为最好储层,Ⅱ类为较好储层,Ⅲ类为相对最差储层。其中,Ⅰ类储层主要分布于分流河道分叉叠置及水下分流河道汇聚叠合部位,储层品质最好,为最有利勘探目标。