申请人:Novaled GmbH
公开号:EP3208862A1
公开(公告)日:2017-08-23
The present invention relates to a charge transporting semi-conducting material comprising:
a) optionally at least one electrical dopant, and
b) a branched or cross-linked charge transporting polymer comprising 1,2,3-triazole cross-linking units of at least one of the general formulae Ia and/or Ib,
wherein
aa) Pol1- Pol4 are independently selected chains of the charge-transporting polymer,
bb) X1, X2, X3, and X4 are independently selected spacer units or, independently, represent direct bonding of pol1 - Pol4 to the 1,2,3-triazole ring,
cc) each of R and R' is independently selected from H halogen or a carbon-containing group,
wherein the charge transporting polymer comprises ethylene building units substituted with at least one pending side group comprising a conjugated system of delocalised electrons ,
the charge transporting semi-conducting material being obtainable by a process comprising:
i) providing a solution containing
aaa) a first precursor charge transporting polymer comprising at least one covalently attached azide group and optionally at least one acetylenic group; and/or a second precursor charge transporting polymer comprising at least one covalently attached acetylenic group and optionally at least one azide group; and optionally at least one crosslinking agent comprising at least two functional groups selected from azide and/or acetylenic group,
bbb) optionally 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 azide and acetylenic groups to effect crosslinking, preferably by heating,
wherein at least one of the first and second precursor charge transporting polymer comprises ethylene building units substituted with at least one pending side group comprising a conjugated system of delocalised electrons,
a first and a second precursor charge transporting polymer used therein, a process for preparing the inventive 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,包括
a) 可选的至少一种电掺杂剂,以及
b) 由通式 Ia 和/或 Ib 中至少一种的 1,2,3-三唑交联单元组成的支化或交联电荷传输聚合物、
其中
aa) Pol1- Pol4 是独立选定的电荷传输聚合物链、
bb)X1、X2、X3 和 X4 是独立选定的间隔单元,或独立地代表 pol1 - Pol4 与 1,2,3-三唑环的直接键合、
cc) R 和 R'各自独立地选自卤素或含碳基团、
其中,电荷传输聚合物包含被至少一个待定侧基取代的乙烯结构单元,该待定侧基包含一个分散电子的共轭体系、
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) 第一种前体电荷传输聚合物,包含至少一个共价连接的叠氮基团和可选的 至少一个乙炔基团;和/或第二种前体电荷传输聚合物,包含至少一个共价 连接的乙炔基团和可选的至少一个叠氮基团;以及可选的至少一种交联剂, 包含至少两个选自叠氮基团和/或乙炔基团的官能团、
bbb) 可选的至少一种电掺杂剂、
ccc) 至少一种溶剂、
ii) 将溶液沉积在基底上、
去除溶剂,以及
iv) 使叠氮基团和乙炔基团发生反应以实现交联,最好是通过加热、
其中第一和第二前体电荷传输聚合物中的至少一种包含被至少一个待定侧基取代的乙烯结构单元,该待定侧基包含一个脱电子共轭体系、
其中使用的第一和第二前体电荷传输聚合物、制备本发明电荷传输半导电材料的工艺以及包含该材料的电子设备。