Synthesis of branched Au nanoparticles with tunable near-infrared LSPR using a zwitterionic surfactant

P. Pallavicini; G. Chirico; M. Collini; G. Dacarro; A. Donà; L. D'Alfonso; A. Falqui; Y. Diaz-Fernandez; S. Freddi; B. Garofalo; A. Genovese; L. Sironi; A. Taglietti

doi:10.1039/C0CC02682D

Synthesis of branched Au nanoparticles with tunable near-infrared LSPR using a zwitterionic surfactant†

P. Pallavicini,*^a G. Chirico,^b M. Collini,^b G. Dacarro,^a A. Donà,^a L. D'Alfonso,^b A. Falqui,^c Y. Diaz-Fernandez,^a S. Freddi,^b B. Garofalo,^a A. Genovese,^c L. Sironi^b and A. Taglietti^a

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^a Dipartimento di Chimica Generale, Università di Pavia, viale Taramelli 12, 27100 Pavia, Italy
E-mail: piersandro.pallavicini@unipv.it
Fax: +39 0382 528544
Tel: +39 0382 987336

^b Dipartimento di Fisica G. Occhialini, Università Milano Bicocca, Piazza della Scienza 3, 20126 Milano, Italy

^c Istituto Italiano di Tecnologia, via Morego 30, 16163 Genova, Italy

Abstract

Asymmetric branched gold nanoparticles are obtained using for the first time in the seed-growth approach a zwitterionic surfactant, laurylsulfobetaine, whose concentration in the growth solution allows to control both the length to base-width ratio of the branches and the LSPR position, that can be tuned in the 700–1100 nm near infrared range.

Chemical Communications

Synthesis of branched Au nanoparticles with tunable near-infrared LSPR using a zwitterionic surfactant†

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Synthesis of branched Au nanoparticles with tunable near-infrared LSPR using a zwitterionic surfactant

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