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 MoreChengdu Boon Stream Chemical Industry Co.,Ltd.
Contact:+86-28-83156758
Address:No.859,Dongzikou Road,Jinniu District,Chengdu,Sichuan,P.R.China
Shandong Dayi Chemical Co., Ltd.
website:http://www.dayi.com.cn
Contact:+86- 535-7388728. 15306386031
Address:No 1 Danya west road, Laiyang City, Shandong province
website:http://www.shengmaochem.com
Contact:86-27-82853423, 82819281
Address:Rm 202, A Unit Huaqiao Building No. 2, Lihuangpi Road, Wuhan, China
Jinan Boss Chemical Industry Co., Ltd.【revoke the business license】
website:http://www.chemboss.com.cn
Contact:+86-531-58591595
Address:No2.Hualong Road, Jinan, China
Contact:17316303296
Address:240 Amboy Ave
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)