两亲8-氨基喹啉配体的合成、表征及其光谱性质

设计合成了以8-氨基喹啉为亲水头基的两亲配体：2-十六烷基丙二酸二(8-氨基喹啉)酰胺(H2A)。通过元素分析、红外光谱、核磁共振、荧光和UV-Vis光谱表征鉴定了这个化合物。在UV-Vis光谱中，H2A的吸收峰随溶剂极性的增大而紫移，F(n，ε)函数(ε为溶剂的介电常数，n为折射率)对H2A吸收带频率具有线性关系。H2A在室温、中性条件下具有荧光现象，Zn^2 离子使H2A的荧光强度稍有增加，而Cu^2 离子对H2A的荧光具有强的淬灭作用。H2A及其LB膜可被用作电致发光器件的发光层。     

新型荧光试剂5-(4-溴苯偶氮)-8-(8-喹啉重氮氨基)喹啉的合成及其分析应用

将具有荧光特性的8-氨基喹啉结构与具有良好特性的三氮烯结构相结合,首次合成了标题化合物。其结构经过元素分析、红外光谱、核磁共振谱证实。研究表明,在碱性介质中,该试剂在λex/λem=416 nm/512 nm处产生强荧光,并且能被Cu2+荧光增强。基于此,建立了BPAQAQ测定Cu2+的新型荧光分析法。该方法的线性范围为1.4×10-8~1.0×10-5mol/L,检测限为1.1×10-8mol/L。将其应用于大米粉和小麦粉中Cu2+的测定,结果满意。     

8-羟基喹啉两亲配体的合成、表征和单分子成膜性能

设计合成了以8-羟基喹啉为亲水头基的两亲配体2-十二烷氧基羰基．8-羟基喹啉（H2A^12）和2-十六烷氧基羰基-8-羟基喹啉（H2A^16）。通过元素分析、红外光谱、核磁共振谱和UV-Vis光谱表征鉴定了这两个化合物。H2A^12。和H2A^16及萁LB膜可用作电致发光器件的发光层。     

8—氨基喹啉新衍生物与铜和钴荧光反应的研究

合成了15个8-氨基喹啉5-位单偶氮类、6个偶氮磺酰胺类和2个双偶氮类新衍生物。系统研究了它们与 Cu(Ⅱ)和 Co(Ⅱ)的荧光反应,阐述了试剂结构对试剂及其配合物荧光性能的影响规律。     

新荧光试剂5-（4-氯苯偶氮）-8-（8-喹啉重氮氨基）喹啉的合成及其荧光分析

合成了标题化合物(p-ClPAQAQ),其结构经IR、1HNMR、元素分析证实.在碱性介质中,该试剂于λex/λem=427 nm/498 nm产生荧光,且能与Al(Ⅲ)络合并发生荧光增强,基于此,建立了p-CIPAQAQ对Al(Ⅲ)的新荧光分析法.     

8-羟基喹啉衍生物的光谱性质模拟与预测

采用密度泛函理论(DFT)中的B3LYP/6-311G**方法对2-甲酰基-8-羟基喹啉、5-甲酰基-8-羟基喹啉及7-甲酰基-8-羟基喹啉进行了理论计算与分子模拟,结果表明理论计算与模拟的红外光谱吸收峰和核磁共振化学位移与实验值高度吻合。并对尚未有文献报道的3、4和6位甲酰基取代的8-羟基-喹啉衍生物光谱性质进行了理论预测。     

8-羟基喹啉的丙烯酸酯及其聚合物的荧光光谱研究

在同一分子中既含有电子给体基团,又含有电子受体基团的单体,如甲基丙烯酸二甲氨基苄酯(DMABMA),N-(4-N′,N′-二甲氨基苯基)代丙烯酰胺(DMAPAA)及其聚合物的荧光光谱颇为有趣。在这类单体中,由于同时有电子给体二甲氨基苯基和电子     

Pd/C催化水合肼还原法制备5-氨基-8-羟基喹啉

在1.25gw(Pd)=10%的Pd/C催化下,5 29g质量分数为85%的水合肼还原9 70g5 硝基 8 羟基喹啉,在80～85℃下反应4h后,反应产物用苯重结晶得5 氨基 8 羟基喹啉7 31g,收率91 38%。     

荧光试剂5-(4-碘苯偶氮)-8-水杨醛缩氨基喹啉的合成及荧光性质

合成了碘取代的含偶氮基席夫碱类标题化合物(p IPSAQ)。通过IR、1HNMR确证了产物结构。考察了其理化性质,初步测试了其荧光性能。     

一个新的8-磺酰氨基喹啉衍生物与铜(Ⅱ)的显色反应及其应用

在 0 .1 mol/L Na2 B4 O7介质中 ,铜 ( )能与新合成的 8-磺酰氨基喹啉衍生物 5 -(3 -氟 -4 -氯苯基偶氮 ) -8-苯基磺酰氨基喹啉 (FCPBSQ)在室温下迅速发生反应 ,生成一配合比为 1∶ 2的有色配合物 ,其最大吸收波长位于 5 90 nm。研究了此反应的适宜条件 ,并建立了一个测定 Cu( )的光度分析新方法。在最佳条件下 ,Cu( )的浓度在 0～ 1 7.0μg/2 5 m L范围内符合比尔定律 ,其摩尔吸光系数为 6.92× 1 0 4 L· mol-1· cm-1。考察了 2 0多种共存离子的影响 ,大多数常见离子不干扰。本法已用于面粉及茶叶中铜的测定     

LB膜技术的应用研究进展

LB膜技术是在分子水平上制备有序分子超薄膜的先进技术。对LB膜技术的研究和应用进行了综述，介绍了目前LB技术在实现超微细粒子的二维有序组装，在光学，电化学器件和气体传感器中的应用以及通过LB膜技术组装生物仿生膜等方面的最新研究成果。     

Preparation, characterization and taste sensing properties of Langmuir-Blodgett Films from mixtures of polyaniline and a ruthenium complex

Langmuir-Blodgett (LB) films from a ruthenium complex, mer-[RuCl₃(dppb)(py)] (dppb=PPh₂(CH₂)₄PPh₂; py=pyridine) (Rupy), and from mixtures with varied amounts of polyaniline (PANi) were fabricated. Molecular-level interactions between the two components are investigated by surface potential, dc conductivity and Raman spectroscopy measurements, particularly for the mixed film with 10% of Rupy. For the latter, the better miscibility led to an interaction with Rupy inducing a decrease in the conducting state of PANi, as observed in the Raman spectra and conductivity measurement. The interaction causes the final film properties to depend on the concentration of Rupy, and this was exploited to produce a sensor array made up of sensing units consisting of 11-layer LB films from pure PANi, pure Rupy and mixtures with 10 and 30% of Rupy. It is shown that the combination of only four non-specific sensing units allows one to distinguish the basic tastes detected by biological systems, viz. saltiness, sweetness, sourness and bitterness, at the μM level.     

Langmuir and Langmuir-Blodgett Films of Polyfluorenes and Their Use in Polymer Light-Emitting Diodes

The Langmuir and Langmuir-Blodgett (LB) film properties of two polyfluorene derivatives, namely poly(2,7-9,9′-dihexylfluorene-dyil) (PDHF) and poly(9,9 dihexylfluorene-dyil-vynilene-alt-1,4-phenylene-vyninele) (PDHF-PV), are reported. Surface pressure (П-A) and surface potential (ΔV-A) isotherms indicated that PDHF-PV forms true monolayers at the air/water interface, but PDHF does not. LB films could be transferred onto various types of substrate for both PDHF and PDHF-PV. Only the LB films from PDHF-PV could withstand deposition of a layer of evaporated metal to form a light-emitting diode (PLED), which had typical rectifying characteristics and emitted blue light. It is inferred that the ability of the polymer to form true monomolecular layers at the air/water interface seems to be associated with the viability of the LB films in PLEDs.     

Interfacial Chemistry of Langmuir-Blodgett Deposited Polyimide Films on Si (100)

Using the Langmuir-Blodgett (LB) technique, ultrathin films of the octadecylammonium salt of polyamic acid (PACS) on (100) oriented silicon wafers with one, three and five monolayers were prepared. The imidization of the films was investigated with x-ray photoelectron spectroscopy (XPS) during a stepwise heating procedure in vacuum. Significant differences in the XPS spectra indicate an incomplete polymerization of the films as a function of film thickness. It is believed that the chemical interaction at the interface between Si substrate and PACS is responsible for the incomplete polymerization of the LB film in direct contact with the substrate. From ellipsometric measurements the absolute thickness of a PACS and a polyimide layer has been determined to be 1.7 nm and 0.6nm, respectively. These measurements allow us to determine the electron mean free path for the Si2p electrons (E_k=1153 eV) of λ = 4.2±0.1 nm through these films.     

Interfacial Chemistry of Langmuir-Blodgett Deposited Polyimide Films on Si (100)

Using the Langmuir-Blodgett (LB) technique, ultrathin films of the octadecylammonium salt of polyamic acid (PACS) on (100) oriented silicon wafers with one, three and five monolayers were prepared. The imidization of the films was investigated with x-ray photoelectron spectroscopy (XPS) during a stepwise heating procedure in vacuum. Significant differences in the XPS spectra indicate an incomplete polymerization of the films as a function of film thickness. It is believed that the chemical interaction at the interface between Si substrate and PACS is responsible for the incomplete polymerization of the LB film in direct contact with the substrate. From ellipsometric measurements the absolute thickness of a PACS and a polyimide layer has been determined to be 1.7 nm and 0.6nm, respectively. These measurements allow us to determine the electron mean free path for the Si2p electrons (E_k=1153 eV) of λ = 4.2±0.1 nm through these films.     

8－氨基喹啉双偶氮衍生物的合成及其分析应用的研究

首次合成了５－（苯基偶氮）－８－（苯基偶氮氨基）喹啉（ＰＡＰＡＱ）和５－（苯基偶氮）－８－（４－硝基苯基偶氮氨基）喹啉（ＰＡＮＰＡＱ）两个８－氨基喹啉双偶氮衍生物并经红外光谱和元素分析确证了其结构。建立了ＰＡＰＡＱ荧光法测定铜的新体系，其检测范围为０～８０ｐｐｂ，检测极限为０．５ｐｐｂ。方法已用于实际样品中铜的测定，结果满意。     

Langmuir and Langmuir-Blodgett (LB) films of poly[(2-methoxy,5-n-octadecyl)-p-phenylenevinylene] (OC1OC18-PPV)

A PPV derivative, poly(2-methoxy,5-(n-octadecyl)-p-phenylenevinylene) (OC₁OC₁₈-PPV), has been synthesized via the Gilch route and used to fabricate Langmuir and Langmuir-Blodgett (LB) films. True monomolecular films were formed at the air/water interface, which were successfully transferred onto different types of substrate. Using UV-visible absorption, FTIR, fluorescence and Raman scattering spectroscopies we observed that the polymer molecules were randomly distributed in the LB film, with no detectable anisotropy. This is in contrast to the anisotropic LB films of a previously reported PPV derivative, poly(2-methoxy-5-n-hexyloxy)-p-phenylenevinylene (OC₁OC₆-PPV), which is surprising because the longer chain of OC₁OC₁₈-PPV investigated here was expected to lead to more ordered films. As a consequence of the lack of order, LB films of OC₁OC₁₈-PPV exhibit lower photoconductivity and require higher operating voltage in a polymer light-emitting diode (PLED) in comparison with LB films of OC₁OC₆-PPV. This result confirms the importance of molecular organization in the LB film to obtain efficient PLEDs.     

8—氨基喹啉5—位偶氮衍生物的合成及其与钴的显色反应研究

以８－氨基喹啉为母体合成了１８个５－位偶氮衍生物,其中１１个是新化合物。系统的研究了它们与钴离子的显色反应,对试剂的结构与光度性能的关系作了探讨,为寻求性能优良的测钴显色剂提供地依据。     

几种8—氨基喹啉偶氮衍生物的合成及其与钴的显色反应研究

合成了４种多取代的８－氨基喹啉偶氮类新试剂。研究了它们与钴（Ⅱ）的显色反应。在表面活性剂的存在下,试剂与钴（Ⅱ）均有较高的反应灵敏度。对５－［（２－羧基－４－硝基苯基）偶氮］－８－氨基喹啉（ＮＣＰＡＱ）与钴（Ⅱ）的显色反应进行了较为系统的研究,配合物的吸收峰位于６６０ｎｍ,摩尔吸光系数为１．１５×１０５Ｌ·ｍｏｌ－１·ｃｍ－１,钴的量在０～１５μｇ／２５ｍＬ范围内符合比尔定律。