Thermally Activated Delayed Fluorescence Benzyl Cellulose Derivatives for Nondoped Organic Light-Emitting Diodes
作者:Masaya Shibano、Hiroki Ochiai、Katsuaki Suzuki、Hiroshi Kamitakahara、Hironori Kaji、Toshiyuki Takano
DOI:10.1021/acs.macromol.9b02644
日期:2020.4.28
Thermally activated delayed fluorescence (TADF) benzyl cellulose derivatives (TBC-X), which contained both carbazole (host) and phthalimide-based TADF dye (guest) moieties, were prepared from 2,3-di-O-benzyl cellulose in high yields. The TBC-X samples were soluble in common organic solvents such as CH2Cl2, CHCl3, THF, and toluene. The photoluminescence spectra of TBC-X spin-coated films had a single
热活化延迟荧光(TADF)苄基纤维素衍生物(TBC- X),其中载两个咔唑(主机)和邻苯二甲酰亚胺- TADF染料(宾)部分,从制备的2,3-二- ø -苄基高收率纤维素。的TBC- X样品溶于普通有机溶剂如CH 2氯2,氯仿3,THF,甲苯等。TBC - X旋涂膜的光致发光光谱具有仅源自客体部分的单个发射峰,这表明从主体到客体部分的有效能量转移。在TBC-10旋涂膜中(主体和客体部分的含量分别为93和7)具有最高的55.3%的光致发光量子产率和TADF特性。与未掺杂的有机发光二极管TBC-10作为发光层显示绿色发射(λ EL = 517纳米),并取得的5.9%的最大外量子效率。