申请人:Novaled GmbH
公开号:EP3208863A1
公开(公告)日:2017-08-23
The present invention is related to a charge transporting semi-conducting material comprising:
a) at least one electrical dopant, and
b) a branched or cross-linked charge-transporting polymer comprising cyclobutenone cross-linking units of at least one of the general formulae Ia and/or Ib,
wherein
aa) Pol1, Pol2, Pol3 and Pol4 are independently selected chains of the charge-transporting polymer,
bb) X1, X2, X3, and X4 are independently selected optional spacer units or, independently, represent direct bonding of Pol1, Pol2, Pol3 and Pol4 chains to the cyclobutenone ring,
cc) Z1, Z2, Z3, and Z4 are independently selected from H, halogen or a carbon-containing group;
the charge transporting semi-conducting material being obtainable by a process comprising:
i) providing a solution containing
aaa) at least one precursor charge transporting compound comprising at least one covaleiztly attached alkinyloxy group having generic formula II
wherein
X is an optional spacer which is further linked to a charge transporting structural moiety of the precursor charge transporting compound,
the dashed line represents the bonding to a charge transporting structural moiety of the precursor charge transporting compound and
Z1, Z2, Z3, and Z4 are independently selected from H, halogen or the carbon-containing group,
bbb) at least one electrical dopant,
ccc) at least one solvent,
ii) depositing the solution on a substrate,
iii) removing the solvent, and
iv) reacting the alkinyloxy groups to effect crosslinking, preferably by heating,
wherein the average number of the alkinyloxy groups per one molecule of the precursor charge transporting compound provided in the step i) is equal to or greater than 2, preferably greater than 2.05, a polymer and precursors as defined above, a process for preparing the charge transporting semi-conducting material and an electronic device comprising the same.
本发明涉及一种电荷传输半导电材料,该材料包括
a) 至少一种电掺杂剂,以及
b) 由至少一种通式 Ia 和/或 Ib 的环丁烯酮交联单元组成的支化或交联电荷传输聚合物、
其中
aa) Pol1、Pol2、Pol3 和 Pol4 是独立选定的电荷传输聚合物链、
bb)X1、X2、X3 和 X4 是独立选择的任选间隔单元,或独立代表 Pol1、Pol2、Pol3 和 Pol4 链与环丁烯酮环的直接键合、
cc) Z1、Z2、Z3 和 Z4 分别独立地选自 H、卤素或含碳基团;
电荷传输半导电材料可通过以下工艺获得,包括
i) 提供含有以下成分的溶液
aaa) 至少一种前体电荷传输化合物,包含至少一个共价连接的烷氧基,其通式为 II
其中
X 是任选的间隔物,它进一步与前体电荷传输化合物的电荷传输结构分子相连、
虚线表示与前体电荷传输化合物的电荷传输结构分子键合,以及
Z1、Z2、Z3 和 Z4 分别独立地选自 H、卤素或含碳基团、
bbb) 至少一种电掺杂剂、
ccc) 至少一种溶剂、
ii) 将溶液沉积在基底上、
去除溶剂,以及
iv) 使烷氧基发生反应以实现交联,最好是通过加热、
其中,在步骤 i) 中提供的每一分子前体电荷传输化合物中的烷氧基的平均数量等于或大于 2,最好大于 2.05,如上定义的聚合物和前体,制备电荷传输半导电材料的工艺和包含该材料的电子装置。