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Synthesis of Gold Nano‐hexapods with Controllable Arm Lengths and Their Tunable Optical Properties
Author(s) -
Kim Do Youb,
Yu Taekyung,
Cho Eun Chul,
Ma Yanyun,
Park O Ok,
Xia Younan
Publication year - 2011
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201100983
Subject(s) - surface plasmon resonance , nano , near infrared spectroscopy , materials science , computer science , nanotechnology , optics , physics , composite material , nanoparticle
A star in the making : Gold nano‐hexapods with controlled arm lengths were synthesized by selective growth on the vertices of octahedral Au seeds. Depending on the arm length, their surface plasmon resonance peaks shifted from the visible to the near‐infrared region (see picture), which could be readily controlled by varying the amount of HAuCl 4 , the reaction temperature, or both.