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.
Provided is an electroluminescent device. The electroluminescent device includes an anode, a cathode, and an organic layer disposed between the anode and the cathode, wherein the organic layer includes a first metal complex of a ligand having a structure represented by Formula 1 and a first compound having a structure represented by Formula 2. The novel material combination comprising the first metal complex and the first compound can be used in an emissive layer in an electroluminescent device. The novel material combination can enable the novel electroluminescent device to obtain a darker red color, a lower voltage, higher efficiency, and a longer lifetime and can provide better device performance. Further provided are an electronic device and a compound combination.
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 X
1
to X
8
are N and the remaining of X
1
to X
8
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.