Issue 10, 2012
From the journal:

RSC Advances

La(OTf)3-mediated self-organization of guanosine with an alkynyl-Au(i)PPh3 moiety to induce Au(i)–Au(i) interactions†

Xiangtai Meng,a   Toshiyuki Moriuchi,*a   Yuki Sakamoto,a   Masatoshi Kawahata,b   Kentaro Yamaguchib  and  Toshikazu Hirao*a  

* Corresponding authors

a Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamada-oka, Suita, Osaka, Japan
E-mail: moriuchi@chem.eng.osaka-u.ac.jp, hirao@chem.eng.osaka-u.ac.jp
Fax: 81 6-6879-7415
Tel: 81-6-6879-7413

b Pharmaceutical Sciences at Kagawa Campus, Tokushima Bunri University 1314-1 Shido, Sanuki, Kagawa 769-2193, Japan
E-mail: yamaguchi@kph.bunri-u.ac.jp
Fax: 81-87-894-0181
Tel: 81-87-894-511

Abstract

A bioorganometallic compound GPhAuPPh3 composed of the guanosine and alkynyl-Au(I)PPh3 moieties was prepared. The self-assembly properties in both the absence and presence of KPF6 or La(OTf)3 were studied by NMR, UV-vis, CD and fluorescence measurements. When monovalent KPF6 was added, the expected octamer was formed without any Au(I)–Au(I) interactions. This is due to the presence of the bulky phosphine moiety that makes the Au(I) moieties far away each other. In contrast, in the presence of trivalent La(OTf)3, a more closely stacked octamer was obtained than in the presence of KPF6, leading to Au(I)–Au(I) interactions.

Graphical abstract: La(OTf)3-mediated self-organization of guanosine with an alkynyl-Au(i)PPh3 moiety to induce Au(i)–Au(i) interactions

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Article information

DOI
https://doi.org/10.1039/C2RA01196D
Article type
Paper
Submitted
28 Nov 2011
Accepted
28 Feb 2012
First published
30 Mar 2012

RSC Adv., 2012,2, 4359-4363

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La(OTf)3-mediated self-organization of guanosine with an alkynyl-Au(I)PPh3 moiety to induce Au(I)–Au(I) interactions

X. Meng, T. Moriuchi, Y. Sakamoto, M. Kawahata, K. Yamaguchi and T. Hirao, RSC Adv., 2012, 2, 4359 DOI: 10.1039/C2RA01196D

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