Theoretical discussions on the influence of introduction of halogen atom on spectral properties of p

来源 :全国第十七届大环化学暨第九届分子化学学术讨论会 | 被引量 : 0次 | 上传用户:wanyuequn
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
During the past few years,a large number of organic transport materials have been reported,such as derivatives of perylene bisimides (PBIs) are of increasing interest,due to their exceptional geometries and electronic properties such as large π-conjugation spreading over the whole core,the ability to form well ordered π-stacked aggregates.
其他文献
中国是农业大国,农药的生产量、使用量均居世界前列,农药使用导致的环境问题已经十分突出,其中阿特拉津(Atrizine,2-氯-4-乙胺基-6-异丙胺基-1,3,5-三嗪)作为抑制农田杂草生长的一种三嗪类的除草剂,喷洒后大部分直接进入土壤,通过淋溶作用,进入深层土壤或地下水,或是随地表径流进入河流、湖泊,成为环境污染物.我国黄淮海流域内阿特拉津的浓度远远超过了地表水检出限标准,最高达到75μg/L.
阿特拉津是一种世界范围内广泛应用的除草剂.由于其长期施用,致使其在土壤中残留较高,随着降雨和下渗造成地表和地下水质污染.许多研究表明阿特拉津在自然界具有高水溶性、低蒸汽压、水解慢的特点;同时,水中的阿特拉津很难被微生物分解,世界各国的多处水体中都有阿特拉津检出,已成为潜在的环境危害.此外,美国环境署还将阿特拉津列为致癌和内分泌干扰物.因此,水体的阿特拉津污染逐渐被公众和相关研究机构所关注.据报道,
稀土氨氮废水的处理方法主要有蒸发浓缩法、折点氯化法、氨吹脱法、化学沉淀法、膜法等。其中一些方法适用于高浓度的氨氮废水处理,一些方法适用予低浓度氨氮废水的后续处理以达到废水回用目的。为了弥补单一处理方法的局限性,一些研究还探索了混合处理方法的可行性,将高浓度氨氮废水处理方法与低浓度氨氮废水处理方法联用,既包含了高浓度氨氮废水的后续补充处理,同时也包括了低浓度氨氮废水的预处理。稀土氨氮废水的处理应尽可
Thiazole and its benzothiazole is an important type of aromatic heterocycles with nitrogen and sulfur atoms.This special structure of thiazole ring endows its derivatives to exhibit wide potential app
Quinolones are one of the most widely prescribed antimicrobial agents as they are generally well tolerated with excellent safety profile and favorable pharmacokinetic characteristics.However,with the
Rotaxanes,considered as a typical type of mechanically interlocked structures,are crucial precursors for the fabrication of advanced supramolecular architectures and have been widely used as building
瓜环(Cucurbit[n]uril)作为一类新型的笼状主体分子,其疏水空腔以及两个敞开且布满极性羰基氧端口的结构特征形成了特有的瓜环主客体化学,同时瓜环具有较高的热稳定性和化学稳定性,在准轮烷、轮烷、分子开关等方面被广泛的研究.
2.引言迄今,基于含酰亚胺骨架的刚、柔性Schiff 碱大环不断被合成,其在互穿或互锁的一类组装体设计与合成研究中,一直受到青睐[1,2].2.Schiff 碱大环合成及晶体结构
A novel series of coumarin type of Miconazole analogues were designed,synthesized and characterized by IR,NMR,MS and HRMS spectra.All the new compounds were screened for their antifungal activities ag
Novel coumarin metronidazoles as antimicrobial agents were synthesized and their synthesized compounds were confirmed by NMR and MS spectra.Some new compounds exhibited strong antimicrobial activities