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Specific functionalization of CTAB stabilized anisotropic gold nanoparticles with polypeptides for folding-mediated self-assembly

หน่วยงาน Nanyang Technological University, Singapore

รายละเอียด

ชื่อเรื่อง : Specific functionalization of CTAB stabilized anisotropic gold nanoparticles with polypeptides for folding-mediated self-assembly
นักวิจัย : Wang, Yusong , Aili, Daniel , Selegård, Robert , Tay, Yee Yan , Baltzer, Lars , Zhang, Hua , Bo, Liedberg
คำค้น : DRNTU::Engineering::Materials
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2555
อ้างอิง : Wang, Y., Aili, D., Selegård, R., Tay, Y. Y., Baltzer, L., Zhang, H., et al. (2012). Specific functionalization of CTAB stabilized anisotropic gold nanoparticles with polypeptides for folding-mediated self-assembly. Journal of materials chemistry, 22(38), 20368-20373. , http://hdl.handle.net/10220/11504 , http://dx.doi.org/10.1039/c2jm31176c
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : Journal of materials chemistry
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

Anisotropic nanoparticles stabilized by cetyltrimethylammonium bromide (CTAB) are notoriously difficult to homogenously functionalize using conventional gold–thiol chemistry. Using surface assisted laser desorption time of flight mass spectroscopy and scanning transmission electron microscopy-energy dispersive X-ray spectroscopy, we demonstrate that silver species adsorbed on the particle surface prevent effective surface functionalization. When covered by a thin gold film, particle functionalization was drastically improved. A thiol-containing polypeptide was immobilized on arrowhead gold nanorods (NRs) and was subsequently able to selectively heteroassociate with a complementary polypeptide resulting in a folding-mediated bridging aggregation of the NRs. Despite using arrowhead NRs with a pronounced difference in surface arrangement on the {111} facets on the arrowheads compared to the {100} facets at the particle sides, the polypeptides were efficiently and homogeneously immobilized on the particles after gold film overgrowth.

บรรณานุกรม :
Wang, Yusong , Aili, Daniel , Selegård, Robert , Tay, Yee Yan , Baltzer, Lars , Zhang, Hua , Bo, Liedberg . (2555). Specific functionalization of CTAB stabilized anisotropic gold nanoparticles with polypeptides for folding-mediated self-assembly.
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Wang, Yusong , Aili, Daniel , Selegård, Robert , Tay, Yee Yan , Baltzer, Lars , Zhang, Hua , Bo, Liedberg . 2555. "Specific functionalization of CTAB stabilized anisotropic gold nanoparticles with polypeptides for folding-mediated self-assembly".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Wang, Yusong , Aili, Daniel , Selegård, Robert , Tay, Yee Yan , Baltzer, Lars , Zhang, Hua , Bo, Liedberg . "Specific functionalization of CTAB stabilized anisotropic gold nanoparticles with polypeptides for folding-mediated self-assembly."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2555. Print.
Wang, Yusong , Aili, Daniel , Selegård, Robert , Tay, Yee Yan , Baltzer, Lars , Zhang, Hua , Bo, Liedberg . Specific functionalization of CTAB stabilized anisotropic gold nanoparticles with polypeptides for folding-mediated self-assembly. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2555.