RT Journal Article A1 Qiuqin Huang,Heqi Gao,Shuming Yang,Dan Ding,Zhenghuan Lin,Qidan Ling; AD Fujian Key Laboratory of Polymer Materials, College of Chemistry and Materials Science, Fujian Normal University, 350007, 中国 ; State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials, Ministry of Education, and College of Life Sciences, Nankai University, 300071, 中国 ; Fujian Key Laboratory of Polymer Materials, College of Chemistry and Materials Science, Fujian Normal University, 350007, 中国 ; State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials, Ministry of Education, and College of Life Sciences, Nankai University, 300071, 中国 ; Fujian Key Laboratory of Polymer Materials, College of Chemistry and Materials Science, Fujian Normal University, 350007, 中国 ; Fujian provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, 350007, 中国 T1 Ultrastable and colorful afterglow from organic luminophores in amorphous nanocomposites: Advanced anti-counterfeiting and in vivo imaging application YR 2020 IS 4 vo 13 OP 1035-OP 1043 K1 sol-gel;nanocomposite;bioimaging;phosphorescence;afterglow AB Special attention has been paid to the organic afterglow materials (OAM) for their fascinating properties. However, poor stability at air and complicated structure design hinder the development of OAM. Herein, sol-gel, a facile and simple technique, is employed to synthesize a series of organic/inorganic hybrid nanocomposites (N1/SiO2, N2/SiO2, and N3/SiO2) by covalently linking three common aryl imides with crosslinked silica skeleton. These nanomaterials show excitation wavelength-dependent and colorful (yellow, red and green) afterglow of organic imides with long lifetime up to 1.1 s at air. Interestingly, the ultralong phosphorescence is ultrastable under various conditions: water, high temperature, UV irradiation and in vivo, due to the protection of inorganic silica. In particularly, heating to 500 oC does not quench the afterglow of organic luminophore in nanocomposites, but forms new ultralong phosphorescence originated from space-conjugation of silica and carbonyl. The afterglow nanomaterials display huge advantages in the applications of advanced anti-counterfeiting and bioimaging. SN 1998-0124 LA EN