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

• Pavel L. Padnya,
• Irina A. Khripunova,
• Olga A. Mostovaya,
• Timur A. Mukhametzyanov,
• Vladimir G. Evtugyn,
• Vyacheslav V. Vorobev,
• Yuri N. Osin and
• Ivan I. Stoikov

Beilstein J. Nanotechnol. 2017, 8, 1825–1835, doi:10.3762/bjnano.8.184

• 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. Keywords: fluorescence; nanoparticles; self-assembly; thiacalixarene

• agreement was observed between the DLS data and the microscopy measurements in the case of the compounds 8 and 10 in cone conformation. This is due to the structure of the macrocycles, which formed spherical charged particles (micelles) with inwardly directed hydrophobic parts (thiacalixarene) and outwardly

• no effect of the conformation on the position of the emission maxima and on the shape of the spectra of the studied compounds, which is characteristic for thiacalixarene derivatives [52][53]. This is probably due to the fact that the substituents are long and removed from the macrocyclic fragment