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Synthesis of Conjugated Polymers Containing Octafluorobiphenylene Unit via Pd-Catalyzed Cross-Dehydrogenative-Coupling Reaction
ACS Macro Letters ( IF 5.8 ) Pub Date : 2017-12-26 00:00:00 , DOI: 10.1021/acsmacrolett.7b00887
Hideaki Aoki 1 , Hitoshi Saito 1 , Yuto Shimoyama 1 , Junpei Kuwabara 1 , Takeshi Yasuda 2 , Takaki Kanbara 1
Affiliation  

Polycondensation via Pd-catalyzed cross-dehydrogenative-coupling reaction of 2,2′,3,3′,5,5′,6,6′-octafluorobiphenyl with thiophene analogues was studied. The synthetic protocol, in which employment of prefunctionalized starting monomers was fully avoided, allowed straightforward access to an alternating π-conjugated polymer. The addition of K2CO3 to the catalytic system promotes the cross-coupling reaction and suppresses the undesired homocoupling reaction, producing the corresponding donor–acceptor type π-conjugated polymers with minor homocoupling defects. The reaction also proceeded using O2 as the terminal oxidant, resulting in lower loading of the Ag oxidant. The obtained polymer was evaluated as an emitting material for an organic light-emitting diode.

中文翻译:

Pd催化的交叉脱氢偶联反应合成含八氟联苯单元的共轭聚合物

研究了Pd催化的2,2',3,3',5,5',6,6'-八氟联苯与噻吩类似物的交叉脱氢偶联反应。完全避免使用预官能化起始单体的合成方案允许直接获得交替的 π 共轭聚合物。向催化体系中添加 K 2 CO 3促进了交叉偶联反应并抑制了不希望的同系偶联反应,产生了相应的供体-受体型 π 共轭聚合物,具有较小的同系偶联缺陷。该反应还使用O 2作为末端氧化剂进行,导致Ag氧化剂的负载量较低。将得到的聚合物作为有机发光二极管的发光材料进行了评价。
更新日期:2017-12-26
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