Smart Lipid Nanotubes for Easy Formation of Gold-Lipid Hybrid Nanotubes and Tunable Gold Superstructures

Unsal H., Kalaycioglu G. D., Aydogan N., Karakuscu N.

CHEMISTRYSELECT, cilt.4, sa.35, ss.10276-10287, 2019 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 4 Sayı: 35
  • Basım Tarihi: 2019
  • Doi Numarası: 10.1002/slct.201902636
  • Dergi Adı: CHEMISTRYSELECT
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.10276-10287
  • Anahtar Kelimeler: Gold nanoparticles, gold nanowires, hybrid nanotubes, in-situ reduction, lipid nanotube, ELECTRIC-FIELD, NANOPARTICLES, NANOWIRES, CITRATE, FABRICATION, TEMPLATE, PH, NANOSTRUCTURES, NANOCRYSTALS, MORPHOLOGY
  • Hacettepe Üniversitesi Adresli: Evet

Özet

Organic-inorganic hybrid nanotubes are highly functional and interesting materials. However, their formation generally requires reducing agents, high temperatures, special procedures, organic solvents etc. Here, using a simple concept based on engineering and materials design, we fabricated stimuli-responsive lipid-gold hybrid nanotubes. Self-assembled lipid nanotubes, made from specially designed AQua molecules, are used as the nucleation sites. Well-coated hybrid nanotubes are obtained by the in-situ formation of gold nanoparticles on the nanotubes. The AQua molecule itself, without any other additives, reduces and stabilizes the gold nanoparticles. The nanoparticle coating degrees on the lipid nanotubes can be adjusted by varying the temperature, pH, and/or HAuCl4 concentration. In addition to hybrid nanotubes, stimuli-responsive gold nano-(wires, pompoms, and cubes) and polyhedrons are formed at specific conditions. Varying the pH results in a reversible change of gold nanowires to polyhedrons.