【摘 要】
：
Main observation and conclusionrnA new bipyridine fused rhodamine-like chelating ligand and the corresponding transition metal complexes of platinum(Ⅱ)and irid
【机 构】
：
Department of Chemistry,Southern University of Science and Technology,No.1088,Tangchang Boulevard,Na
论文部分内容阅读
Main observation and conclusionrnA new bipyridine fused rhodamine-like chelating ligand and the corresponding transition metal complexes of platinum(Ⅱ)and iridi-um(Ⅲ)have been designed,synthesized and structurally characterized by X-ray crystallography.Their photophysical properties and acid-or metal ion-promoted spirocarbon ring-opening properties have been investigated.The platinum(Ⅱ)and iridium(Ⅲ)complexes show a drastic color change in solution with Hg2+ions and emergency of an absorption band at around 450-600 nm,assignable to the absorption band of the ring-opened rhodamine-like ligand.The platinum(Ⅱ)complex was suggested to undergo dissociation with Hg2+ion,based on the corresponding absorption titration study.Emission titration studies of iridium(Ⅲ)complexes were found to suffer from the quenching process,probably due to the presence of a lower-lying non-emissive excited state from the ring-opened form of ligand.
其他文献
Main observation and conclusionrnThe use of a metallo cavitand for the selective sequestration of n-alkanes from their mixtures with isooctane is described.Comp
Since the pioneering work on Cr(Ⅲ)-catalyzed enantioselective[4+2]/allylboration reported by Hall and co-workers,a variety of catalytic methodologies for the asymmetric allylic borylation reactions have been developed to provide chiral allylboronates bear
为了解福建地区猪源CTX-M阳性大肠杆菌耐药性、耐药基因流行情况以及耐药质粒特征,本研究采用琼脂二倍稀释法测定福建地区分离的67株猪源CTX-M型超广谱β-内酰胺酶阳性大肠杆菌对13种抗菌药物的敏感性,通过PCR检测其重要的耐药基因;通过供体菌与受体菌(C600)的接合转移试验,检测携带CTX-M耐药基因耐药质粒的水平转移情况,并测定接合子的药物敏感性变化以及耐药质粒的复制子类型。结果显示,分离菌株对头孢噻呋(100%)、头孢噻肟(100%)和四环素(94.0%,63/67)耐药性较高,对阿米卡星相对敏感
Near infrared(NIR)light occupies a significant proportion in solar energy,and it also exhibits high penetration depth in biological tissue owing to its low absorption by pigments and water.Hence,the effective utilization of NIR light is a matter of great
猪圆环病毒(Porcine circovirus,PCV)是迄今为止能够感染哺乳动物的最小病毒,目前已发现有PCV1、PCV2和PCV3 3种血清型。PCV1于1974年首次在猪肾细胞(PK-15)中发现,可感染猪但对其无致病性;PCV2于1998年首次被分离和鉴定,是引发猪群出现断奶仔猪多系统衰竭综合征(PMWS)、猪皮炎肾病综合征(PDNS)、猪呼吸道疾病综合征(PRDC)等猪圆环病毒相关疾病(Porcine circovirus-associated disease,PCVAD)的主要病原体;PCV
Main observation and conclusionrnWe previously reported that a series of tetraphenylethylene(TPE)-containing all-hydrocarbon conjugated polymers exhibited a spe
Sulfur has been paid close attention by the research and manufacturing as a cathode material for lithium-sulfur batteries(LSB)in recent decade because it has high specific capacity and low cost.But the low utilization of active materials and serious shutt
研究了影响铝土矿中有效铝含量测定的主要影响因素。主要探讨了样品粒度、均匀性对有效铝溶出效果的影响及样品组成对有效铝含量大小的影响。利用电感耦合等离子体原子发射光谱(ICP-AES)法测定铝土矿中有效铝含量、X射线荧光光谱(XRF)法测定铝土矿中总氧化铝含量和其它杂质成分含量,借助X射线衍射光谱(XRD)法对样品进行物相组成分析,确定各主要组成的结构和占比。将样品制备至0.106 mm以下,均匀性好,精密度高,有效铝溶出率高。样品物相组成中三水铝石占比高,一水铝石占比低,与氢氧化钠低温条件更易反应,使溶出率
为了解猪圆环病毒2型(PCV2)在河北地区流行特点及遗传演化规律,本研究参照GenBank登录的部分PCV2全基因序列,经序列比对后选取保守区域设计一对PCV2检测引物,利用PCR方法对2015年~2019年间在河北秦皇岛及周边地区收集的379份来源于不同病猪的肝、脾、肺、肾、肠、脑、淋巴结及血清等样品开展PCV2的分子流行病学调查,结果显示共检出203份PCV2阳性样品,阳性率为53.6%。根据阳性病料的采集时间、地点等特征选择47份阳性病料样品扩增其ORF2基因并测序,分析该基因及其氨基酸序列与Gen
The Catellani reaction,originally discovered by Catellani in 1997,and further developed by Catellani,Lautens and others,has emerged as a powerful strategy for t