TY - JOUR
T1 - Spatial donor/acceptor architecture for intramolecular charge-transfer emitter
AU - Li, Hong Cheng
AU - Tang, Xun
AU - Yang, Sheng Yi
AU - Qu, Yang Kun
AU - Jiang, Zuo Quan
AU - Liao, Liang Sheng
N1 - Funding Information:
This work was supported by the National Key R&D Program of China (No. 2016YFB0400700 ), and the National Natural Science Foundation of China (Nos. 51773141 , 61961160731 and 51873139 ). This project is also funded by the Natural Science Foundation of Jiangsu Province of China (No. BK20181442 ), Collaborative Innovation Center of Suzhou Nano Science & Technology , the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD) , and the “111” Project .
Publisher Copyright:
© 2021
PY - 2021/3
Y1 - 2021/3
N2 - Charge transfer via electron hopping from an electron donor (D) to an acceptor (A) in nanoscale, plays a crucial role in optoelectronic materials, such as organic light-emitting diodes (OLEDs) and organic photovoltaic cells (OPVs). Here, we propose a strategy for binding D/A units in space, where intramolecular charge-transfer can take place. The resulted material DM-Me-B is able to give bright emission in this molecular architecture because of the good control of D/A interaction and conformational rigidity. Moreover, DM-Me-B presents small singlet-triplet splitting energy, enabling thermally activated delayed fluorescence. Therefore, the DM-Me-B exhibits ∼20% maximum external quantum efficiency and low efficiency roll-off at 1000 cd/m2, certifying an effective strategy in controlling D/A blocks through space.
AB - Charge transfer via electron hopping from an electron donor (D) to an acceptor (A) in nanoscale, plays a crucial role in optoelectronic materials, such as organic light-emitting diodes (OLEDs) and organic photovoltaic cells (OPVs). Here, we propose a strategy for binding D/A units in space, where intramolecular charge-transfer can take place. The resulted material DM-Me-B is able to give bright emission in this molecular architecture because of the good control of D/A interaction and conformational rigidity. Moreover, DM-Me-B presents small singlet-triplet splitting energy, enabling thermally activated delayed fluorescence. Therefore, the DM-Me-B exhibits ∼20% maximum external quantum efficiency and low efficiency roll-off at 1000 cd/m2, certifying an effective strategy in controlling D/A blocks through space.
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U2 - 10.1016/j.cclet.2020.08.045
DO - 10.1016/j.cclet.2020.08.045
M3 - Article
AN - SCOPUS:85090488789
SN - 1001-8417
VL - 32
SP - 1245
EP - 1248
JO - Chinese Chemical Letters
JF - Chinese Chemical Letters
IS - 3
ER -
