Two novel aggregation-induced emission active coumarin-based Schiff bases and their applications in cell imaging

Two new coumarin-based Schiff bases, 8,8′-((1 E ,1′ E )-hydrazine-1,2-diylidenebis(methanylylidene))bis(7-hydroxy-4-methyl-2 H -chromen-2-one), (CHC), and 7-hydroxy-8-(( E )-(( E )-((2-hydroxynaphthalen-1-yl)methylene)hydrazono)methyl)-4-methyl-2 H -chromen-2-one, (CHN), with excited-state intramole...

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Published in:New journal of chemistry 2014, Vol.38 (6), p.2386-2393
Main Authors: Xiao, Hongde, Chen, Kun, Cui, Dandan, Jiang, Nannan, Yin, Gui, Wang, Jie, Wang, Ruiyong
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Language:English
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cited_by cdi_FETCH-LOGICAL-c231t-a719b9e3fdabce91170beb5cdef164317fafd3f568dd645c8caf72b210cd03c03
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container_issue 6
container_start_page 2386
container_title New journal of chemistry
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creator Xiao, Hongde
Chen, Kun
Cui, Dandan
Jiang, Nannan
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Wang, Jie
Wang, Ruiyong
description Two new coumarin-based Schiff bases, 8,8′-((1 E ,1′ E )-hydrazine-1,2-diylidenebis(methanylylidene))bis(7-hydroxy-4-methyl-2 H -chromen-2-one), (CHC), and 7-hydroxy-8-(( E )-(( E )-((2-hydroxynaphthalen-1-yl)methylene)hydrazono)methyl)-4-methyl-2 H -chromen-2-one, (CHN), with excited-state intramolecular proton-transfer (ESIPT) properties, were synthesized and characterized. Both of the compounds displayed aggregation-induced emission (AIE) characteristics, of which CHC nanoparticles emitted a reddish orange fluorescence, while the CHN nanoparticles exhibited a saffron yellow fluorescence. The appearance of emission peaks in the long wave regions with large Stokes-shifts demonstrated the occurrence of the ESIPT process. Observations of the nanoparticles' morphologies were undertaken through a transmission electron microscope (TEM) method. Furthermore, due to the good biocompatibilities, high stabilities and the large Stokes-shifts, the two compounds were ideal candidates for cell staining.
doi_str_mv 10.1039/C3NJ01557B
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title Two novel aggregation-induced emission active coumarin-based Schiff bases and their applications in cell imaging
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