Light-induced release of DNA from gold nanoparticles: nanoshells and nanorods.

Light-induced release of DNA from gold nanoparticles: nanoshells and nanorods.
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DOI:
10.1021/ja204578e
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发表时间:
2011-08-10
影响因子:
15
通讯作者:
Halas, Naomi J.
Halas, Naomi J.
中科院分区:
化学1区
文献类型:
--
作者:
Huschka, Ryan;Zuloaga, Jorge;Knight, Mark W.;Brown, Lisa V.;Nordlander, Peter;Halas, Naomi J.

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Plasmon-resonant nanoparticle complexes show highly promising potential for light-triggered, remote-controlled delivery of oligonucleotides on demand, for research and therapeutic purposes. Here we investigate the light-triggered release of DNA from two types of nanoparticle substrates: Au nanoshells and Au nanorods. Both light-triggered and thermally induced release are distinctly observable from nanoshell-based complexes, with light-triggered release occurring at an ambient solution temperature well below the DNA melting temperature. Surprisingly, no analogous measureable release was observable from nanorod-based complexes below the DNA melting temperature. These results suggest that a nonthermal mechanism may play a role in plasmon resonant, light-triggered DNA release.
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