国家恶臭污染控制重点实验室通过验收

2002年7月,以天津市环境保护科学院为依托建立的“国家环境保护恶臭污染控制重点实验室”通过了国家环境保护总局组织的专项验收。这标志着我国具备了控制、治理     

第六届全国环境催化与环境材料学术会议（第一轮通知）

环境保护在社会与经济可持续发展战略中占有重要的地位,亦是我国的基本国策。环境催化是环境保护和绿色化学最重要的科学与技术基础,也是催化领域发展最为迅速的学科方向之一。国家“十一五”规划建议中提出的“建设资源节约型、环境友好型社会”的奋斗目标,为从事环境催化与环境材料研究的广大科技工作者提供了广阔的发展空间和创新机遇。经中国化学会催化专业委员会批准,第六届全国环境催化与环境材料学术会议由四川大学承办,拟定于2009年8月中旬在我国悠久的历史文化名城和现代化都市一成都召开。     

化学教育与环保教育

当今,环境保护已为举世瞩目的重大课题,它既需要高新科学技术与理论,又需全体公民的环境教育,中国是发展中国家,环保尤为重要,环境教育应为中学化学教学的重要内容。一、从“环境危机”看环境教育的重要性环境污染,生态失衡,今天正日益严重地威胁着全人类的生存,人类只有一个地球,“环境保护”正唤起人类行动起来,爱护环境,保护家园。值得我们警惕的是：我国西部兰州上空已出现浓重光化学烟雾;我国长江以北地区竟已找不到一条未被污染的主要河流;重庆、贵阳等地近几年常有大量酸雨降落…。环保部门指出：目前我国环境污染程度…     

“十二五”环保规划将催热环境监测仪器行业

随着节能减排和低碳经济成为国家长期国策,“十二五”期间国家对环境监测行业也加大了投资力度。“十二五”是我国环境保护事业充满希望的5年,也将是环境监测事业大有作为的5年,监测事业站在新的历史起点上,面临着难得的发展机遇。     

废弃电路板的化学处理方法

随着电子产业的迅速发展,印刷电路板的废弃量也在逐年增加。大量的废弃印刷电路板可能对环境造成严重的污染。废弃印刷电路板具有极高回收价值,如果采用适当的方法对其进行回收,不但可以节省我国日益紧缺的矿产资源,而且对环境保护有着极大的意义。本文阐述了废弃电路板资源回收的经济意义和环境意义,并详细介绍了湿法处理、热解法处理和超临...     

环境仪器新需求不断如何把握先机?

最严环保法、天津危化品爆炸、阅兵蓝、北京首发红色预警，持续一年的环保热词反映了公众强烈的环境诉求。为了我国的持续发展，国家也将环境治理作为一项重要工作来抓，习近平总书记曾提出“绿水青山就是金山银山”，“大气十条”、“水十条”、“土十条”，一项项政策的发布表达了政府对环境治理的决心。可以预见我国环保产业必将会是一个大有发展前景的产业。     

第五届全国环境催化与环境材料学术会议（第一轮通知）

环境保护在社会与经济可持续发展战略中占有重要的地位。环境催化是环境保护和绿色化学最重要的科学与技术基础,也是催化领域发展最为迅速的学科方向之一。国家“十一五”规划建议中提出的“建设资源节约型、环境友好型社会”的奋斗目     

课内外结合进行环境保护教育

本文结合国外环境教育课程开设的情况和我国的现状,阐述了如何在中学化学教学中课内课外相结合开展环境保护教育。既充分利用教材潜在因素有机结合环境保护教育,或作为乡土教材中的一部分开课。在课外开展调查、参观、专题讲座、科技兴趣小组等多种形式活动。使化学教学既联系了社会,联系了生产,联系了实际,又使学生受到环境保护教育。     

我国造纸工业对环境的污染及解决方法

本文论述造纸工业的主要污染源及解决造纸工业对环境污染问题的关键技术和方法, 提出我国造纸工业环境保护的基本对策, 认为我国的造纸工业也能成为洁净工业。     

第七次全国环境保护大会召开

我国环保领域最高级别的会议——第七次全国环境保护大会不久前在北京召开。受国务院委托,环境保护部部长周生贤与31个省、自治区、直辖市人民政府和新疆生产建设兵团,以及华能、大唐、华电、国电、中电投、国家电网、中石油、中石化（集团）公司主要负责人正式签署“十二五”主要污染物总量减排目标责任书。     

Optically active mixed (phthalocyaninato)(porphyrinato) rare earth triple-decker complexes. Synthesis, spectroscopy, and effective chiral information transfer

With the view to creating novel sandwich-type tetrapyrrole rare earth complexes toward potential applications in material science and chiral catalysis, two new optically active mixed (phthalocyaninato)(porphyrinato) rare earth triple-decker complexes with both (R)- and (S)-enantiomers [M(2)(Pc)(2)(TCBP)] {TCBP = Meso-tetrakis [3,4-(11,12:13,14-di(1',2'-naphtho)-1,4,7,10,15,18-hexaoxacycloeicosa-2,11,13-triene)-phenyl] porphyrinate; M = Eu (1), Y (2)} have been designed and prepared by treating optically active metal free porphyrin (R)-/(S)-H(2)TCBP with M(Pc)(2) in the presence of corresponding M(acac)(3)·nH(2)O (acac = acetylacetonate) in refluxing 1,2,4-trichlorobenzene (TCB). These novel mixed ring rare earth triple-decker compounds were characterized by a wide range of spectroscopic methods including MS, (1)H NMR, IR, electronic absorption, and magnetic circular-dichroism (MCD) spectroscopic measurements in addition to elemental analysis. Perfect mirror image relationship was observed in the Soret and Q absorption regions in the circular-dichroism (CD) spectra of the (R)- and (S)-enantiomers, indicating the optically active nature of these two mixed (phthalocyaninato)(porphyrinato) rare earth triple-decker complexes. This result reveals the effective chiral information transfer from the peripheral chiral binaphthyl units to the porphyrin and phthalocyanine chromophores in the triple-decker molecule because of the intense π-π interaction between porphyrin and phthalocyanine rings. In addition, their electrochemical properties have also been investigated by cyclic voltammetry (CV).     

Isolation and Spectroscopic Characterization of Protonated Mixed [Tetrakis (4-pyridyl)porphyrinato] (phthalocyaninato)Rare Earth (Ⅲ)Double-decker Compounds

IntroductionThe homoleptic sandwich~type porphyrinato and phthalocyaninato metal complexesRE (P) z and RE2 (P) 3 (RE =rare earth 1 P = Por or Pc) have been intensively studied over sev-eral decades due to their potential application in non-linear optical (NLO) materials, molecu-lar electronic and magnetic ..te.i.l.L1--l6j.The double-deckers have also aroused a growing interest as structural and spectroscopicsynthetic models for the dimmer of bacteriochlorophyl1 molecules in bacterial pho…     

乙酰丙酮-5,10,15,20-四-(对氯苯基)卟啉稀土配合物的制备和性质

用丙酸做溶剂,吡咯与对氯笨甲醛反应制备5,10,15,20-四-(对氯苯基)卟啉(p-Cl)Tpp;后者与稀土乙酰丙酮配合物Ln(acac)₃·3H₂O在1,2,4-三氯苯中反应制得乙酰丙酮-5,10,15,20-四-(对氯苯基)卟啉稀土配合物Ln(p-Cl)Tppacac;并做了元素分析、UV、IR和PMR等性质的研究。     

Meso-四（4-（N-咔唑）丁烷氧苯基）卟啉稀土金属配合物的合成及光电性质

本文设计合成了未见文献报道的meso—N（4-（N-咔唑）丁烷氧苯基）卟啉（1）及其稀土金属配合物（Ln=Sm（2）,Eu（3）,Tb（4）,Dy（5））．通过核磁共振氢谱、紫外．可见吸收光谱、元素分析和红外光谱对稀土金属卟啉配合物进行了表征,并研究了卟啉样品的荧光性质和表面光电压性质．结果表明,受无辐射跃迁等因素的影响,卟啉1～5的荧光强度和荧光量子效率依次减小．在无外加电场的情况下,稀土金属配合物2～5的表面光电压强度变化与荧光强度变化呈现相反的规律,充分表明荧光发射与表面光电压的相互竞争过程．不同性质的电场对金属卟啉配合物的电荷分离影响显著,在正电场和无外加电场情况下,配合物2～5的表面光电压信号强度依次增加．     

Behavior of new complexes of tetrakis(4-methoxylphenyl)porphyrin with heavy rare earth elements in reversed-phase high performance liquid chromatography

An HPLC method has been developed for the separation of new complexes of tetrakis(4-methoxylphenyl)porphyrin (TMOPP) with four heavy rare earth elements (RE = Y, Er, Tm, and Yb). The function of amine and acid in the mobile phase has been investigated and a reasonable explanation is presented. Successful separation of the RE-TMOPP-Cl complexes is accomplished in 10 min with a mobile phase consisting of methanol-water-acetic acid-triethanolamine. The detection limits (S/N= 3) for the four complexes are 0.01 microg/mL. This method is rapid, sensitive, and simple.     

New mixed rare earth double-decker complexes with octyloxynaphthyl-porphyrinato and phenylthio-naphthalocyaninato ligands – preparation and spectroscopic characterization

Eight new (porphyrinato)(naphthalocyaninato) rare earth(III) double-decker complexes M^III(TONPP)[Nc(PhS)₈] [M = La, Pr, Nd, Sm, Eu, Gd, Tb, and Dy; TONPP = 5,10,15,20-tetrakis(4-octyloxynaphthyl) porphyrin; Nc(PhS)₈ = 3,4,12,13,21,22,30,31-octa(phenylthio)-2,3-naphthalocyanine] have been prepared and characterized by spectroscopic methods. The UV–vis absorption spectra depend on the central rare earth ionic size, suggesting that all the transitions involve molecular orbitals with contribution from both porphyrin and naphthalocyanine ligands. The IR and Raman spectra of these double-decker compounds were systemically investigated, showing that the electron hole in these mixed double-deckers is mainly localized at the naphthalocyanine ring. Their sandwich nature was also characterized by MS, EA, and ¹H NMR techniques.     

Lanthanide complexes with acetylacetonate and 5,10,15,20-tetra[para-(4-chlorobenzoyloxy)-meta-ethyloxy]-phenyl porphyrin

Lanthanide complexes of acetylacetonate and 5, 10, 15, 20-tetra[para-(4-chloro-benzoyloxy)-meta-ethyloxy]phenyl porphyrin having the general formula Ln[(ClBOEP)₄P]acac (where Ln=Tb, Dy, Ho, Er; ClBOEP=[para-(4-chlorobenzoyloxy)-meta-ethyloxy]phenyl; Hacac=acetylacetone; P=porphyrin) have been prepared and characterized. A structure is proposed in which one 5, 10, 15, 20-tetra[para-(4-chloro-benzoyloxy)-meta-ethyloxy]phenyl porphyrin is coordinated to a rare earth ion in a tetradentate fashion, while one acetylacetonate is coordinated to the same metal ion in a bidentate fashion.     

Ferrocene-decorated (phthalocyaninato)(porphyrinato) double- and triple-decker rare earth complexes: synthesis, structure, and electrochemical properties

A series of four mixed (phthalocyaninato)(porphyrinato) rare earth double-decker complexes (Pc)M[Por(Fc)(2)] [Pc = phthalocyaninate; Por(Fc)(2) = 5,15-di(ferrocenyl)-porphyrinate; M = Eu (1), Y (2), Ho (3), Lu (4)] and their europium(III) triple-decker counterpart (Pc)Eu(Pc)Eu[Por(Fc)(2)] (5), each with two ferrocenyl units at the meso-positions of their porphyrin ligands, have been designed and prepared. The double- and triple-decker complexes 1-5 were characterized by elemental analysis and various spectroscopic methods. The molecular structures of two double-deckers 1 and 4 were also determined by single-crystal X-ray diffraction analysis. Electrochemical studies of these novel sandwich complexes revealed two consecutive ferrocene-based one-electron oxidation waves, suggesting the effective electronic coupling between the two ferrocenyl units. Nevertheless, the separation between the two consecutive ferrocene-based oxidation waves increases from 1 to 4, along with the decrease of rare earth ionic radius, indicating the effect of rare earth size on tuning the coupling between the two ferrocenyl units. Furthermore, the splitting between the two ferrocene-based one-electron oxidations for triple-decker 5 is even smaller than that for 1, showing that the electronic interaction between the two ferrocene centers can also be tuned through changing the linking sandwich framework from double-decker to triple-decker. For further understanding of the electronic coupling between ferrocenyl groups, DFT calculation is carried out to clarify the electronic delocalization and the molecular orbital distribution in these double-decker complexes.     

meso-四(4-磺苯基)卟啉对铕(Ⅲ)与羧酸络合物电还原的催化作用

水溶液中Eu³⁺与meso-四(4-磺苯基)卟啉(TPPS)不易形成卟啉络合物,但在乙酸、酒石酸、丙二酸等共存时,在循环伏安图上可得一对Eu³⁺还原-氧化的可逆或准可逆峰,此峰与Eu³⁺在NaClO₄底液中的还原峰相比,峰电位正移,峰电流增高。从6种Eu³⁺-羧酸络合物与TPPS共存时的实验中证明这些络合物并没有和TPPS形成三元络合物,而是吸附在汞电极上的TPPS产生电催化作用。     

稀土有机电致发光研究进展

介绍了近年来有机电致发光研究中稀土有机电致发光研究的动态,对稀土有机配合物的选择、配合物的载流子传输性能、稀土有机电致发光器件、电致发光与光致发光的关系以及如何提高电致发光器件亮度等问题进行了讨论。