理想的蓝色热活化延迟荧光发射体的分子设计，用于高效率、小单重态-三重态能量分裂、低效率滚降和长寿命。
Ideal Molecular Design of Blue Thermally Activated Delayed Fluorescent Emitter for High Efficiency, Small Singlet-Triplet Energy Splitting, Low Efficiency Roll-Off, and Long Lifetime.
机构信息
School of Chemical Engineering, Sungkyunkwan University , 2066 Seobu-ro, Jangan-gu, Suwon, Gyeonggi 440-746, Korea.
Department of Polymer Science and Engineering, Dankook University , 126 Jukjeon-dong, Suji-gu, Yongin, Gyeonggi 448-701, Korea.
出版信息
ACS Appl Mater Interfaces. 2016 Sep 7;8(35):23190-6. doi: 10.1021/acsami.6b05877. Epub 2016 Aug 25.
Highly efficient thermally activated delayed fluorescent (TADF) emitters, 5-(2-(4,6-diphenyl-1,3,5-triazin-2-yl)phenyl)-5H-benzofuro[3,2-c]carbazole (oBFCzTrz), 5-(3-(4,6-diphenyl-1,3,5-triazin-2-yl)phenyl)-5H-benzofuro[3,2-c]carbazole (mBFCzTrz), and 5-(4-(4,6-diphenyl-1,3,5-triazin-2-yl)phenyl)-5H-benzofuro[3,2-c]carbazole (pBFCzTrz), were synthesized to study the effects of ortho-, meta-, and para- linkages between donor and acceptor moieties. oBFCzTrz having ortho- linked donor and acceptor moieties showed smaller singlet-triplet energy gap, shorter excited state lifetime, and higher photoluminescence quantum yield than mBFCzTrz and pBFCzTrz which are interconnected by meta- and para- positions. The TADF device using oBFCzTrz as a blue emitter exhibited high external quantum efficiency over 20%, little efficiency roll-off, and long device lifetime.
高效热激活延迟荧光（TADF）发射体 5-(2-(4,6-二苯基-1,3,5-三嗪-2-基)苯基)-5H-苯并呋喃[3,2-c]咔唑（oBFCzTrz）、5-(3-(4,6-二苯基-1,3,5-三嗪-2-基)苯基)-5H-苯并呋喃[3,2-c]咔唑（mBFCzTrz）和 5-(4-(4,6-二苯基-1,3,5-三嗪-2-基)苯基)-5H-苯并呋喃[3,2-c]咔唑（pBFCzTrz）被合成以研究给体和受体部分之间的邻位、间位和对位连接的影响。具有邻位连接给体和受体部分的 oBFCzTrz 表现出较小的单重态-三重态能隙、较短的激发态寿命和较高的光致发光量子产率，而 mBFCzTrz 和 pBFCzTrz 则通过间位和对位连接。使用 oBFCzTrz 作为蓝色发射体的 TADF 器件表现出超过 20%的高外量子效率、较小的效率滚降和长器件寿命。
Zotero 插件