Gold nanoparticles with diameters of ca. 13 nm were synthesised by UV irradiation of a supramolecular organogel into which HAuCl4 and tetraoctylammonium bromide had been diffused—the gel network plays an essential role in nanoparticle stabilisation.
Love, C. S., Chechik, V., Smith, D. K., Wilson, K., Ashworth, I., & Brennan, C. (2005). Synthesis of gold nanoparticles within a supramolecular gel-phase network. Chemical Communications, (15), 1971-1973. https://doi.org/10.1039/b418190e