The present invention provides novel polyaminopyridines which are excellent in solubility in various solvents, and are preferably used in a polymer-type organic electroluminescent material, and a process for preparing the same. More particularly, the present invention provides polyaminopyridines having a repetition structural unit represented by the following general formula (1);
and having a number average molecular weight in a range of 500 to 1000000.
The present invention provides novel polyaminopyridines which are excellent in solubility in various solvents, and are preferably used in a polymer-type organic electroluminescent material, and a process for preparing the same. More particularly, the present invention provides polyaminopyridines having a repetition structural unit represented by the following general formula (1);
and having a number average molecular weight in a range of 500 to 1000000.
CONDENSED CYCLIC COMPOUND AND ORGANIC LIGHT-EMITTING DEVICE INCLUDING THE SAME
申请人:Samsung Display Co., Ltd.
公开号:EP3428149A2
公开(公告)日:2019-01-16
Provided are a condensed cyclic compound and an organic light-emitting device comprising the same. The organic light-emitting device may comprise a first electrode, a second electrode, and an organic layer disposed between the first electrode and the second electrode. The organic layer may comprise the condensed cyclic compound represented by Formula 1:
. In Formula 1, rings A1, A2, and A3 may each be independently a C5-C60 carbocyclic group or a C2-C30 heterocyclic group, and n1 to n3 may each be independently 0 or 1, provided that the sum of nl, n2, and n3 is 1. In addition, the descriptions of Xi, L1 to L9, al to a9, Ar1 to Ar6, bl to b6, R1 to R3, and cl to c3 are as defined in the present specification.
Chromatographic materials for the separation of unsaturated molecules
申请人:Waters Technologies Corporation
公开号:US10092894B2
公开(公告)日:2018-10-09
The present disclosure relates to a method of separating a compound of interest, particularly unsaturated compound(s) of interest, from a mixture. The compound is separated using a column having a chromatographic stationary phase material for various different modes of chromatography containing a first substituent and a second substituent. The first substituent minimizes compound retention variation over time under chromatographic conditions. The second substituent chromatographically and selectively retains the compound by incorporating one or more aromatic, polyaromatic, heterocyclic aromatic, or polyheterocyclic aromatic hydrocarbon groups, each group being optionally substituted with an aliphatic group.