Dna-guided nanoparticle assemblies

C - Chemistry – Metallurgy – 12 – N

Patent

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C12N 15/09 (2006.01) C12N 15/32 (2006.01)

Patent

CA 2665537

In some embodiments, DNA-capped nanoparticles are used to define a degree of crystalline order in assemblies thereof. In some embodiments, thermodynamically reversible and stable body-centered cubic (bcc) structures, with particles occupying <~10% of the unit cell, are formed. Designs and pathways amenable to the crystallization of particle assemblies are identified. In some embodiments, a plasmonic crystal is provided. In some aspects, a method for controlling the properties of particle assemblages is provided. In some embodiments a catalyst is formed from nanoparticles linked by nucleic acid sequences and forming an open crystal structure with catalytically active agents attached to the crystal on its surface or in interstices.

Selon certains modes de réalisation, des nanoparticules revêtues d'ADN sont utilisées pour définir un degré d'ordre cristallin d'assemblages de telles nanoparticules. Selon certains modes de réalisation, des structures cubiques centrées (cc) stables et thermodynamiquement réversibles sont formées, les particules occupant moins d'environ 10 % de la cellule unitaire. Des conceptions et des voies permettant la cristallisation des assemblages de particules sont identifiées. Certains modes de réalisation concernent un cristal plasmonique. Selon certains aspects, l'invention concerne un procédé de contrôle des propriétés d'assemblages de particules. Selon certains modes de réalisation, un catalyseur est formé à partir de nanoparticules reliées par des séquences d'acides nucléiques et formant une structure cristalline ouverte avec des agents catalytiquement actifs attachés au cristal à sa surface ou dans les interstices.

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