
Chinese Chemical Letters p. 1669 - 1674 (2021)
Update date:2022-08-05
Topics:
Liu, Hao
Ando, Naoki
Yamaguchi, Shigehiro
Naumov, Pan?e
Zhang, Hongyu
Nowadays, the development of triplet-involved materials becomes a hot research topic in solid-state luminescence fields. However, the mechanism of triplet-involved emission still remains some mysteries to conquer. Here, we proposed a new concept of excited-state conformation capture for the constructions of different types of triplet-involved materials. Firstly, excited-state conformation could be trapped by supramolecular chains in crystal and form a new optimum excited-state structure which is different from that in solution or simple rigid environment, leading to bright thermally activated delayed fluorescence (TADF) emission. Based on excited-state conformation capture methodology, next, we obtained room-temperature phosphorescence (RTP) by introducing Br atoms for the enhancement of intersystem crossing. It could be concluded from experimental results that TADF may originate from aggregate effect while RTP may derive from monomers. Finally, heavy-atom free RTP and ultra RTP were achieved by eliminating aggregate effect. This work could not only extend the design methodology of triplet-involved materials but also set clear evidences for the mechanism of triplet-involved emissions.
View MoreDezhou Longteng Chemical Co., Ltd.
website:http://www.sodium-methoxide.cn/
Contact:0086-18866052283
Address:Xinhua Industrial Zone, Dezhou City, Shandong Province, China
Contact:+44 (0)161 367 9441
Address:
Dalian Join King Biochemical Tech. Co., Ltd.
Contact:0411 39216206
Address:814 First State Blvd
Chongqing maohuan Chemicals Co., Ltd
website:http://www.bschem.com
Contact:+86 13996103726
Address:Chongqing Nan'an District Tu Town
wuxi leji biology technology co., LTD
website:http://www.lejibio.com/
Contact:18362718864
Address:The Nanyue Road No. 2, Yixing City, Jiangsu Province
Doi:10.1002/hlca.19690520138
(1969)Doi:10.1002/anie.202014399
(2021)Doi:10.1016/S0040-4039(98)01910-8
(1998)Doi:10.1021/jo801463j
(2008)Doi:10.1002/ejoc.201901894
(2020)Doi:10.1021/jo9808526
(1998)