Dyes and Pigments (2019)
Update date:2022-08-05
Topics:
Wang, Ying
Cheng, Dandan
Zhou, Hongke
Liu, Xingliang
Wang, Yonghui
Han
Zhang, Chao
Two D-A type cruciform luminophores FB-CTPAEB and DFB-CTPAEB were designed and prepared. The two compounds exhibited unique intramolecular charge-transfer (ICT) and solid-state fluorescence behavior. The results show that both compounds exhibit AIEE behavior and high solid-state luminescence efficiency (up to 0.693 and 0.442, respectively). Moreover, FB-CTPAEB and DFB-CTPAEB show remarkable mechanofluorochromic (MFC) properties. Once the as-prepared samples were subjected to grinding, the emission of the two cruciform luminophores was red shifted by 52 nm and 46 nm, correspondingly, their fluorescence colors changed from yellow and reddish orange to red, respectively. The fluorescence emission changes induced by grinding can be restored by solvent-fuming and regenerated by grinding. PXRD analysis revealed that the MFC behavior of FB-CTPAEB and DFB-CTPAEB came from the transformation between crystalline and amorphous states upon external stimuli. Meanwhile, the extension in molecular conjugation caused by planarization of molecular conformation and subsequent planar intramolecular charge transfer (PICT) process were responsible for the red-shifts in the PL spectra.
View MoreGuangzhou PI & PI Biotech Inc. Ltd.
Contact:+86-20-81716320
Address:Suite 501,198 Kaiyuan Ave.,Science City, Guangzhou,China
Contact:
Address:308# dongwu avenue dongxihu district wuhan city
Weihao Chemtech (ChangZhou) Co., Ltd.
Contact:051989185693
Address:NO 217 huangshan Rd ,Changzhou
Nanyang Tianhua pharmaceutical Co.,Ltd.
Contact:+8618639816203
Address:Longsheng Industrial Park
Contact:+86-531-58668191 58668193 58668196 58661173
Address:No 55,Beixiaoxinzhuang West Street,Jinan City, Shandong Province
Doi:10.1016/j.dyepig.2011.02.008
(2011)Doi:10.1016/j.tetlet.2007.04.027
(2007)Doi:10.1021/ol0708166
(2007)Doi:10.1021/jo9811367
(1998)Doi:10.1021/ol070376i
(2007)Doi:10.1016/j.bmc.2019.115240
(2020)