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  • Title: Preferentially linear connection of gold nanoparticles in derivatization with phosphorothioate oligonucleotides.
    Author: Kim JY, Lee DH, Kim SJ, Jang DJ.
    Journal: J Colloid Interface Sci; 2008 Oct 15; 326(2):387-91. PubMed ID: 18653196.
    Abstract:
    A gold nanosphere in water is considered to attain special stability in derivatization like an artificial atom when the octet rule is satisfied by forming four covalent bonds with two 5'-phosphorothioate-modified oligonucleotide molecules. Owing to this, the hybridization of two mutually complementary gold-bound oligonucleotides makes gold nanospheres preferentially connected linearly by duplexes to produce strands like linear artificial molecules. We have then fixated the linear strands of DNA-linked gold nanospheres by reducing Ag(+) ion clusters immobilized around duplexes to show the absorption spectrum of silver-coated artificial-molecular nanorods.
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