Actuation of self-assembled two-component rodlike nanostructures.
A model for predicting the effects of stimuli-induced contraction of the polypyrrole ends of two-segment gold-polypyrrole nanorods on their assembly into curved superstructures is presented. The model and experimental data presented here show that small changes (ca. 3%) in the diameter of the polypyrrole segment of each rod will induce dramatic changes (up to 20%) in the radii of the resulting superstructures, providing a convenient means for actuating their opening and closing. We show experimentally that this actuation can be affected via humidity, temperature, and light.
Department of Chemistry and International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, USA.
Jong Kuk
JK
Lim
Jacob W
JW
Ciszek
Fengwei
F
Hue
Jae-Won
JW
Jang
Seongpil
S
Hwang
Chad A
CA
Mirkin