公开(公告)号：US20160315274A1

公开(公告)日：2016-10-27

申请号：US15105947

申请日：2014-12-17

Applicant: BASF SE

Inventor： Christian LENNARTZ ,  Stefan METZ ,  Korinna DORMANN ,  Gerhard WAGENBLAST ,  Ute HEINEMEYER ,  Hannah MANGOLD ,  Minlu ZHANG ,  Thomas-Wesley HOLCOMBE

IPC: H01L51/00 ,  C09K11/02 ,  C09K11/06

CPC classification number: H01L51/0085 ,  C09K11/025 ,  C09K11/06 ,  C09K2211/1007 ,  C09K2211/1014 ,  C09K2211/1022 ,  C09K2211/1029 ,  C09K2211/1044 ,  C09K2211/1059 ,  C09K2211/1088 ,  C09K2211/185 ,  C09K2211/188 ,  H01L51/0034 ,  H01L51/0052 ,  H01L51/0055 ,  H01L51/0059 ,  H01L51/006 ,  H01L51/0064 ,  H01L51/0071 ,  H01L51/0072 ,  H01L51/0073 ,  H01L51/008 ,  H01L51/009 ,  H01L51/0091 ,  H01L51/0094 ,  H01L51/5028 ,  H01L51/5056 ,  H01L51/5072 ,  H01L51/5088 ,  H01L51/5092 ,  H01L51/5096 ,  H01L2251/5384 ,  H01L2251/55 ,  Y02E10/549

Abstract: The present invention relates to organic light-emitting devices comprising (a) an anode, (i) a cathode, and (e) an emitting layer between the anode and cathode, comprising 2 to 40% by weight of a luminescent organometallic complex X having a difference of the singlet energy (ES1(X)) and the triplet energy (ET1(X)) of smaller than 0.2 eV [Δ(ES1(X))−(ET1(X)) ES1(Y)]. By doping, for example, an emitting layer containing a luminescent organometallic complex having a small S1-T1 splitting, with a fluorescent emitter the emission decay time can significantly be shortened without sacrificing external quantum efficiency (EQE) because of very efficient energy transfer.

Abstract translation: 本发明涉及包括（a）阳极，（i）阴极和（e）阳极和阴极之间的发光层的有机发光器件，包括2至40重量％的发光有机金属络合物X，其具有 小于0.2eV [Δ（ES1（X）） - （ET1（X））<0.2eV]的单重态能量（ES1（X））和三重态能量（ET1（X））的差为0.05〜5.0 重量百分比的荧光发射体Y和55-97.95％（重量）的主体化合物，其中有机金属络合物X，荧光发射体Y和主体化合物的总量共计为100 重量％，发光有机金属配合物X（ES1（X））的单重态能量大于荧光发射体Y（ES1（Y））[（ES1（X））> ES1（Y）]的单重态。 通过掺杂，例如，含有具有小的S1-T1分裂的发光有机金属络合物的发光层与荧光发射体相比，由于非常有效的能量转移，发射衰减时间可以显着缩短而不牺牲外部量子效率（EQE）。

公开(公告)号：US20200048395A1

公开(公告)日：2020-02-13

申请号：US16478703

申请日：2018-01-09

Applicant: BASF SE ,  Kolon Plastics Inc.

Inventor： Thomas Heitz ,  Minlu ZHANG ,  Achim STAMMER ,  JongMoon KIM ,  In-Gi CHO ,  Jin-Sang CHOI

IPC: C08G2/10 ,  B01J27/12 ,  C08G2/06

Abstract: A process for making an oxymethylene polymer comprising polymerizing at least one compound capable of forming —CH2O— repeat units (monomer) in the presence of at least one ester of the general formula I (ester): R1—CO—O—R2 (I) wherein R1 can be hydrogen, wherein R1 and R2 are independently of each other linear or branched C1 to C10 alkyl C5 to C7 cycloalkyl —[R3-0-]nR4 wherein R3 is a linear or branched C2 to C5 alkylen and R4 is a linear of branched C1 to C5 alkyl and n is an integer of from 1 to 5. and in the presence of at least one Lewis acid.