MULTIPLY TWINNED PARTICLE MICELLE

Au-thiol aggregates composed of Au multiply twinned particles (MTPs) a nd propionicacidthiolates were produced and named an MTP-micelle. The nuclear magnetic resonance (NMR) spectrum of the MTP-micelle shows tha t most of the propionicacidthiolates seem to form dimers (disulfides) on the Au MTP surface. Transmission electron microscope (TEM) images s how that most of the core Au particles are MTPs, but truncated MTP str uctures are partly observed. This observation predicts the creation of a fullerene-like particle structure by the thiolates-adsorption metho d. The average size of the MTP-micelles is 70 Angstrom, which is confi rmed by a scanning electron microscope (SEM) image. (C) 1998 Elsevier Science B.V. All rights reserved.