Stimuli-responsive cyclometalated platinum complex bearing bent molecular geometry for highly efficient solution-processable OLEDs
作者:Zhenhua Wei、Kai Zhang、Chan Kyung Kim、Shuai Tan、Shaojie Wang、Lin Wang、Jun Li、Yafei Wang
DOI:10.1016/j.cclet.2020.05.005
日期:2021.1
semiconductor filed. In this context, platinum complexes of (dfppy-DC)Pt(acac) and (dfppy-O-DC)Pt(acac) were prepared and characterized, in which (2-(4',6'-difluorophenyl)pyridinato-N,C2')(2,4-pentanedionato-O,O)Pt(II) was used as the planar emission core and 9-(4-(phenylsulfonyl)phenyl)-9H-carbazole (DC) was regard as the bent pendent. Both platinum complexes showed bright emission in solution and
摘要智能材料,如刺激响应发光,因其在半导体领域的潜在应用而备受关注。在这种情况下,制备并表征了(dfppy-DC)Pt(acac)和(dfppy-O-DC)Pt(acac)的铂配合物,其中(2-(4',6'-二氟苯基)吡啶并-N ,C2')(2,4-戊二酮基-O,O)Pt(II)被用作平面发射核,而9-(4-(苯磺酰基)苯基)-9H-咔唑(DC)被视为弯曲侧翼。两种铂配合物在溶液和固态下均显示出明亮的发射光,并伴随着在机械研磨,有机溶剂蒸汽和压力下迷人的外部刺激响应性发射。发射颜色的变化范围从黄色到近红外区域。使用铂络合物作为掺杂剂,制备了可溶液处理的有机发光二极管(OLED),最大外部量子效率为–18%,这是已报道的基于外部刺激响应发光的可溶液处理的OLED中最高的值。这项研究表明,铂配合物可以通过巧妙的分子设计显示出有希望的刺激响应发射,为开发半导体领域的智能材料提供了一种新颖的方法。