Abstract
Cholesterol- and stigmasterol-containing tetraphenylethenes (TPEs) (TPE-Chol and TPE-Stig) are facilely synthesized in satisfactory yields by Cu (I)-catalyzed click reaction of 1,2-bis(4-azidomethylphenyl)-1,2-diphenylethene and cholesteryl-4-ethylbenoate and sigmasteryl 11-(4-ethynylphenoxy)undecanoate, respectively. Whereas they are nonluminescent in solution, they become highly emissive when aggregated in the condensed phase. The molecules of TPE-Stig can self-assemble in methanol solution, generating organogels with gelation-induced emission characteristics.
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Liu, Y., Lam, J.W.Y., Mahtab, F. et al. Sterol-containing tetraphenylethenes: synthesis, aggregation-induced emission, and organogel formation. Front. Chem. China 5, 325–330 (2010). https://doi.org/10.1007/s11458-010-0212-7
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DOI: https://doi.org/10.1007/s11458-010-0212-7