Slow-Reduction Synthesis of a Thiolate-Protected One-Dimensional Gold Cluster Showing an Intense Near-Infrared Absorption

Shinjiro Takano; Seiji Yamazoe; Kiichirou Koyasu; Tatsuya Tsukuda

doi:10.1021/jacs.5b03251

Slow-Reduction Synthesis of a Thiolate-Protected One-Dimensional Gold Cluster Showing an Intense Near-Infrared Absorption

J Am Chem Soc. 2015 Jun 10;137(22):7027-30. doi: 10.1021/jacs.5b03251. Epub 2015 Jun 2.

Authors

Shinjiro Takano¹, Seiji Yamazoe^{1

2}, Kiichirou Koyasu^{1

2}, Tatsuya Tsukuda^{1

2}

Affiliations

¹ †Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
² ‡Elements Strategy Initiative for Catalysis and Batteries (ESICB), Kyoto University, Katsura, Kyoto 615-8520, Japan.

PMID: 26020460
DOI: 10.1021/jacs.5b03251

Abstract

Slow reduction of Au ions in the presence of 4-(2-mercaptoethyl)benzoic acid (4-MEBA) gave Au76(4-MEBA)44 clusters that exhibited a strong (3 × 10(5) M(-1) cm(-1)) near-infrared absorption band at 1340 nm. Powder X-ray diffraction studies indicated that the Au core has a one-dimensional fcc structure that is elongated along the {100} direction.