N-甲基苯胺、二苯胺与质子受体相互作用的研究

测量了N-甲基苯胺、二苯胺与一些极性非质子溶剂（B）在CCl_4中的红外光谱，观察到这两种劳胺均与所研究的质子受体发生了氢键交叉缔合作用，并利用光谱数据计算了相应缔合物的形成常数和部分氢键能．结果表明，二苯胺是比N-甲基苯胺更强的质子供体，非质子溶剂的极性、空间效应和不同成键原子对交叉缔合物的稳定性均有一定的影响．还从分子结构对有关结果进行了讨论.     

Book Reviews

Glossary On Air Pollution, Who Regional Publications European Series No. 9 (Director, Promotion of Environmental Health, WHO Regional Office for Europe, Scherfigsvej 8, DK-2100 Copenhagen θ) 1980, 114 pages (including an introduction, a list of reviewers and a list of the sources of definitions), stiff paper cover, format 239 ± 159 mm, ISBN 92-9020-109-6, WHO Health and Biomedical Information Programme, CH-1211 Geneva 27, SFr. 12.

Spektroskopische Methoden in Der Organischen Chemie (in German), by Manfred Hesse, Herbert Meier and Bernd Zeeh, 478 pages, including 169 figures and 86 tables, flexible paper cover, ISBN 3-13-576101-0, Georg Thieme Verlag, Stuttgart 1979, price DM 26.80.

Analysis of Polycyclic Aromatic Hydrocarbons in Environmental Samples, World Health Organisation/International Agency for Research on Cancer, IARC Publication No. 29 (Series: Environmental Carcinogens, Selected Methods of Analysis, Volume 3, edited by H. Egan, Laboratory of the Government Chemist, London, U.K. et al.) 1980, 240 pages (including 17 figures, 18 tables, many formulae, an annex with 8 methods of analysis and 29 pages of valuable references in two sections), linen, format 242 ± 186 mm, ISBN 92-8-321129-4, WHO Health and Biomedical Information Programme, CH-1211 Geneva 27, US$30 or SFr. 50.

Toxic Metals and Their Analysis by Eleanor Berman, Cook County Hospital, Chicago, Illinois, U.S.A., 304 pages (including an index of 5 pages, 29 tables and 5 figures), linen, format 241 × 163 mm, ISBN 0-85501-468-7, published 1980 by Heyden International Topics in Science, Spectrum House, Hillview Gardens, London NW4 2JQ, U.K., prices £12, US$27 or DM 56.     

Spectrophotometric Determination of Diphenylamine,Pyrrole, and Indole - A Kinetic Study

Abstract

The use of p-dimethylaminocinnamaldehyde (p-DAC) has been described for the colorimetric determination of diphenylamine (DPA), Pyrrole (Py) and Indole (In) in acidic media. The kinetics of the reactions were studied and a mechanism for the reactions has been proposed. The reaction products were isolated, and identified using IR, NMR and elemental analysis.     

Determination of diphenylamine and its mono-derivatives in single-base gun propellants during aging by high performance liquid chromatography

Summary The separation and quantitative determination of diphenylamine and its mono-derivatives in single-base gun propellants during aging was investigated by High Performance Liquid Chromatography (HPLC). We have defined optimal conditions to allow determination of diphenylamine and its mono-derivatives during aging until their levels fell below limits of detection. These compounds were determined in a single-base gun propellant during a storage period of 168 hours at 100°C using a developed, successfully verified HPLC method.     

化学发光免疫分析试剂吖啶酯的合成新路线

设计了一种化学发光免疫分析试剂吖啶酯的合成新路线,以二苯胺为原料合成吖啶-9-羧酸,经酰氯化后与3-(4-羟基苯基)-丙酸-N-羟基琥珀酰亚胺酯反应得4-(2-琥珀酰亚胺基氧羰基乙基)苯基-9-吖啶羧酸酯,最后与氟磺酸甲酯反应即得4-(2-琥珀酰亚胺基氧羰基)苯基-10-甲基吖啶-9-羧酸酯氟磺酸盐(俗称吖啶酯).     

Hypocrellin A与二苄胺和N-甲基苄胺的光化学反应

In order to discuss the free radicals formation mechanism of Hypocrellin A（HA）with amino derivatives,the electron-spin resonance（ ESR） spectroscopy was adopted to study the photochemistry on HA with dibenzyl amine（DBA）and N-methyl benzyl amine（NMBA）,respectively. When HA with DBA or NMBA in chloroform solution was illuminated with visible light,singlet oxygen,semiquinone radical and oxynitride radical were formed depending on the condition of the solvent system containing the amino-substituted and solved oxygen. The signal intensity of oxynitride radical decreased with increasing the illumination time,and the signal intensity of semiquinone radical increased with increasing the illumination time. The oxynitride radical content was in inverse ratio with the semiquinone radical generated by being irradiated. In the aerobic system of chloroform solution containing DBA/HA,smiquinone radical was the main radical irradiated. The results indicated that HA induced amino derivatives into HA semiquinone radical.     

叶菜硝酸盐快速检测方法的研究

依据硝酸盐与二苯胺在浓硫酸介质中反应，生成有色物质的原理，在目视比色法的基础上，建立了一种简便、快捷、可靠的测定叶菜中硝酸盐含量的方法，用于实际样品的测定，结果满意。     

Novel Aspects of a Convenient Synthesis and of Electroproperties of Derivatives Based on Diphenylamine

The substituted monomers 4a , c , d, 5a , b, 6a, 7a , b , and 8a of novel poly(diphenylamines), possessing the respective photochromic groups, were synthesized by the Stille cross‐coupling methodology (Scheme). The hyperbranched structures were characterized by ¹H‐ and ¹³C‐NMR spectroscopy. The obtained monomers show good stability in common organic solvents such as CHCl₃, toluene, and CH₂Cl₂, and exhibit excellent thermal stability. Electrochemical results and theoretical calculations suggest that oxidation and reduction of the monomers start from the side of the amine function and the five‐membered heterocyclic ring moieties, respectively.     

Study of inclusion complex of β-cyclodextrin and diphenylamine: photophysical and electrochemical behaviors

The photophysical, electrochemical and photoprototropic behaviors of diphenylamine (DPA) in aqueous β-cyclodextrin (β-CD) solution have been investigated using absorption spectroscopy and cyclic voltammetric techniques. Absorption of the neutral and cationic form of DPA is enhanced due to the formation of a 1:1 complex with β-CD. The formation of this complex has been confirmed by Benesi-Hildebrand plot and docking studies by RasMol tool methods. The solid complex of β-CD with DPA is investigated by FT-IR, XRD and AFM methods. The thermodynamic parameters (ΔG, ΔH and ΔS) of inclusion process are also determined. The pK(a) values of neutral-monocation equilibria have been determined with absorption (conjugate acid-base) titrations. A mechanism is proposed to explain the inclusion process.     

二苯胺重氮盐与十二烷基硫酸钠在水溶液中的相互作用

报道了二苯胺-4-重氮盐(DDS)与十二烷基硫酸钠(SDS)在水溶液中的相互作用.实验结果表明,体系粘度随SDS/DDS物质的量比(ξ)的变化而急增急降.当ξ=0～0.9时,二者形成沉淀,体系的粘度基本不变;当ξ=1.9～2.3时,沉淀溶解并伴随着体系粘度急增,最高粘度达初始值的2520倍;之后,随ξ的增大,体系粘度迅速下降至初始值.对DDS-SDS聚集体的微观结构与体系粘度的关系进行了初步讨论.同时发现体系粘度是光敏性的,紫外光照可使其迅速下降.