The invention provides methods of treating a bacterial infection in a mammal comprising administering to the mammal a substituted bicyclic heteroaromatic ring compound of formula I: wherein two of X1 to X8 are N and the remaining of X1 to X8 are CH; or a pharmaceutically acceptable salt thereof, as well as novel compounds of formula I and salts thereof and pharmaceutical compositions comprising a compound of formula I or a pharmaceutically acceptable salt thereof.
Hydroxynaphthyridine-Derived Group III Metal Chelates: Wide Band Gap and Deep Blue Analogues of Green Alq<sub>3</sub> (Tris(8-hydroxyquinolate)aluminum) and Their Versatile Applications for Organic Light-Emitting Diodes
作者:Szu-Hung Liao、Jin-Ruei Shiu、Shun-Wei Liu、Shi-Jay Yeh、Yu-Hung Chen、Chin-Ti Chen、Tahsin J. Chow、Chih-I Wu
DOI:10.1021/ja807284e
日期:2009.1.21
= 0.15, 0.07. Compared with Alq(3), Bebq(2) (beryllium bis(benzoquinolin-10-olate)), or TPBI (2,2',2''-(1,3,5-phenylene)tris(1-phenyl-1H-benzimidazole), they are a good electron-transporting material: low HOMO energy level of 6.4-6.5 eV and not so high LUMO energy level of 3.0-3.3 eV. They can be ambipolar and possess a high electron mobility of 10(-4) cm(2)/V s at an electric field of 6.4 x 10(5)
characterizations of the corresponding europiumcomplexes reveal that the sensitization efficiencies (ηsens) are close to 100% and the total photoluminescence quantum yields can reach up to 84%. Most importantly, these structurally rigid luminescent europiumcomplexes exhibit outstanding photostability and thermostability. Unlike the widely used β‐diketone complexes that are easily photodegraded, ND‐based
在发光镧系元素络合物(LLC)领域以及有关有机发光过程的许多学科中,抗光漂白是一个关键的挑战。在这项工作中,开发了一种结构上刚性的有机配体,即4-羟基-1,5-萘啶(ND),它不仅可以有效地敏化emission的发射,而且还表现出独特的光稳定性。合成了一系列具有不同取代基的ND衍生物,并系统地研究了它们的单重态和三重态激发态能级。相应的铕络合物的光物理表征揭示,敏化效率(η SENS)接近100%,总的光致发光量子产率可达到84%。最重要的是,这些结构刚性的发光euro络合物表现出出色的光稳定性和热稳定性。与广泛使用的容易被光降解的β-二酮配合物不同,基于ND的螯合物在200小时内的UV老化测试(10 W m -2 340 nm紫外线A照射)下没有显示出明显的降解。如此出色的抗紫外线性甚至优于著名的化合物三(8-羟基喹啉)铝(Alq 3)。讨论了可能的原因,并提出了设计光稳定LLC的一般规