期刊
NANOMATERIALS
卷 8, 期 9, 页码 -出版社
MDPI
DOI: 10.3390/nano8090728
关键词
tetraphenylethene; aggregation; emission; bio-imaging; silica nanoparticles
类别
资金
- National Research Foundation of Korea (NRF) - Ministry of Science [NRF-2015R1D1A1A01058900]
- National Research Foundation of Korea (NRF) - Ministry of Science ICT [NRF-2017R1A2B4012590]
- National Research Foundation of Korea [2015R1D1A1A01058900, 2017R1A2B4012590] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
In this study, a series of rationally designed emissive phenanthrene derivatives were synthesized and their aggregation-induced emission (AIE) properties in tetrahydrofuran (THF)/water mixtures were investigated. Two tetraphenylethene (TPE) segments were conjugated to both ends of the phenanthrene core at the para-positions and meta-positions, resulting in pTPEP and mTPEP derivatives, respectively. While the TPE-conjugated phenanthrene derivatives did not show any emission when dissolved in pure THF, they showed strong sky-blue emissions in water-THF mixtures, which is attributed to the restriction of intramolecular motions of TPE segments by aggregation. Furthermore, silica nanoparticles loaded with these AIE-active compounds were prepared and proved to be promising intracellular imaging agents.
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