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Sterically Mediated Two‐Dimensional Architectures in Aggregates of Au Nanoparticles Directed by Phosphorothioate Oligonucleotide‐DNA
Author(s) -
Jiang L.,
Zhang H.,
Zhuang J.,
Yang B.,
Yang W.,
Li T.,
Sun C.
Publication year - 2005
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200402004
Subject(s) - steric effects , oligonucleotide , dna , nanoparticle , materials science , helix (gastropod) , particle (ecology) , nanotechnology , crystallography , hexagonal crystal system , colloidal gold , biophysics , stereochemistry , chemistry , biochemistry , biology , ecology , snail
Sterically mediated aggregation of gold nanoparticles : 13 nm gold nanoparticles can be arranged in a hexagonal, square, trigonal, or linear manner (see Figure) in two‐dimensional (2D) aggregates linked by phosphorothioate oligo‐DNA (PS oligo‐DNA) of different lengths. The steric effect induced by the parallel orientation of the PS oligo‐DNA helix on the particle surface is identified to be of vital importance in controlling the 2D architecture of the particles in the aggregates.