The present disclosure relates to an organic electroluminescent compound and an organic electroluminescent device comprising the same. The organic electroluminescent compound of the present disclosure has a high glass transition temperature that can be used in a deposition process. Further, by comprising the organic electroluminescent compound of the present disclosure, an organic electroluminescent device having a low driving voltage, high luminous efficiency, and/or improved lifespan characteristics can be provided.

Described herein are fluspirilene derivatives, methods for making such compounds, and the use of such compounds in the treatment of cancer, an inflammatory disease or condition or neurodegenerative diseases, such as Parkinson's disease, Alzheimer's disease, Huntington's disease, and ALS.

Described herein are fluspirilene derivatives, methods for making such compounds, and the use of such compounds in the treatment of cancer, an inflammatory disease or condition or neurodegenerative diseases, such as Parkinson's disease, Alzheimer's disease, Huntington's disease, and ALS.

Compounds of formula (I): (I) and related aspects. ##STR00001##

The compound represented by formula (1): ##STR00001##
wherein A, B, R.sup.1, and R.sup.2 are as defined in the description, provides organic electroluminescence (EL) devices having a high emission efficiency when operated at low voltage and a long lifetime and electronic devices including such organic EL devices.

The compound represented by formula (1): ##STR00001##
wherein A, B, R.sup.1, and R.sup.2 are as defined in the description, provides organic electroluminescence (EL) devices having a high emission efficiency when operated at low voltage and a long lifetime and electronic devices including such organic EL devices.

An organic electroluminescent device, which has a pair of electrodes and at least one organic layer including a luminescent layer between the pair of electrodes, wherein at least one layer between the pair of electrodes comprises at least one metal complex having a tridentate- or higher polydentate-chain structure ligand.

An organic electroluminescent device, which has a pair of electrodes and at least one organic layer including a luminescent layer between the pair of electrodes, wherein at least one layer between the pair of electrodes comprises at least one metal complex having a tridentate- or higher polydentate-chain structure ligand.

Disclosed herein is a method for selectively reducing, using electrical energy, CO.sub.2 to carbon monoxide, a catalyst for use in the method, and an electrochemical reduction system. The method for producing carbon monoxide by electrochemically reducing carbon dioxide of the present invention includes (a) reacting carbon dioxide with a metal complex represented by formula (1), and (b) applying a voltage to a reaction product of the carbon dioxide and the metal complex represented by formula (1):

##STR00001##

Disclosed herein is a method for selectively reducing, using electrical energy, CO.sub.2 to carbon monoxide, a catalyst for use in the method, and an electrochemical reduction system. The method for producing carbon monoxide by electrochemically reducing carbon dioxide of the present invention includes (a) reacting carbon dioxide with a metal complex represented by formula (1), and (b) applying a voltage to a reaction product of the carbon dioxide and the metal complex represented by formula (1):

##STR00001##