Self-assembly of chiral fluorescent nanoparticles based on water-soluble L-tryptophan derivatives of p-tert- butylthiacalix[4]arene.

Autor: Padnya PL; Kazan Federal University, 420008 Kremlevskaya, 18, Kazan, Russian Federation.; Peoples Friendship University of Russia (RUDN University), 117198 Miklukho-Maklaya St., 6, Moscow, Russian Federation., Khripunova IA; Kazan Federal University, 420008 Kremlevskaya, 18, Kazan, Russian Federation., Mostovaya OA; Kazan Federal University, 420008 Kremlevskaya, 18, Kazan, Russian Federation., Mukhametzyanov TA; Kazan Federal University, 420008 Kremlevskaya, 18, Kazan, Russian Federation., Evtugyn VG; Kazan Federal University, 420008 Kremlevskaya, 18, Kazan, Russian Federation., Vorobev VV; Kazan Federal University, 420008 Kremlevskaya, 18, Kazan, Russian Federation., Osin YN; Kazan Federal University, 420008 Kremlevskaya, 18, Kazan, Russian Federation., Stoikov II; Kazan Federal University, 420008 Kremlevskaya, 18, Kazan, Russian Federation.
Jazyk: angličtina
Zdroj: Beilstein journal of nanotechnology [Beilstein J Nanotechnol] 2017 Sep 04; Vol. 8, pp. 1825-1835. Date of Electronic Publication: 2017 Sep 04 (Print Publication: 2017).
DOI: 10.3762/bjnano.8.184
Abstrakt: New water-soluble tetra-substituted derivatives of p-tert -butylthiacalix[4]arene containing fragments of L-tryptophan in cone and 1,3- alternate conformations were obtained. It was shown that the resulting compounds form stable, positively charged aggregates of 86-134 nm in diameter in water at a concentration of 1 × 10 -4 M as confirmed by dynamic light scattering, scanning electron microscopy and transmission electron microscopy. It was established that these aggregates are fluorescently active and chiral. A distinctive feature of the compounds is the pronounced dependence of their spectral (emission and chiroptical) properties on the polarity of the solvent and the length of the linker between the macrocyclic and fluorophore parts of the molecule.
Databáze: MEDLINE
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