| Info. | Vol.12 - No.2 (2018.06.20) |
|---|---|
| Title | Dual Applicability of Polyaniline Coated Gold Nanorods: A Study of Antibacterial and Redox Activity |
| Authors | Xiaohong Liang1, Saravanan Govindaraju1 & Kyusik Yun1,* |
| Institutions | 1Department of Bionanotechnology, Gachon University, Gyeonggi-do 13120, Republic of Korea *Correspondence and requests for materials should be addressed to K. Yun (ykyusik@gachon.ac.kr) |
| Abstract | Non-agglomerated, dual-purpose monodispersed gold nanorods (GNRs) were synthesized by using a seed-mediated method, and subsequent in situ chemical polymerization yielded polyaniline-coated gold nanorods (PANI-GNRs). The synthesized GNRs and PANI-GNRs were characterized by electron microscopic analyses, selected-area electron diffraction patterns, and element analyses. The prepared nanomaterials had an average length of 40짹0.4 nm and a diameter of 15짹0.2 nm. Furthermore, the PANI coating around the GNRs had a thickness of ~21 nm. These nanomaterials were also characterized by ultraviolet- visible and Fourier transform-infrared spectroscopies. While the absorption peaks of GNRs were observed at 520 and 675 nm, those of PANI-GNRs showed absorption maxima at 325 and 665 nm. The combination of 0.91 vol% of aniline with 5 mL of GNRs provided better electrochemical properties at 0.52 V and 1.30 V. The minimum inhibitory concentrations of laser-irradiated PANI-GNRs, PANI-GNRs, and laser-irradiated GNRs against Escherichia coli and Staphylococcus aureus were determined by using the micro-dilution method and compared to those of kanamycin (standard drug), revealing the significant bactericidal activity of laser-irradiated PANI-GNRs. This activity of the PANI-GNRs was also supported by the results of fluorescence and atomic force microscopy imaging. Thus, the synthesized nanomaterials can be potentially utilized for waste water treatment and biomedical/ pharmaceutical applications. |
| Keyword | Gold nanorods, Polyaniline, Electrochemical performance, Antibacterial properties |
| PDF File |
 # 2010년도 발행분 부터는 Springer 의 BioChip Journal 페이지에서 전문을 열람하실 수 있습니다.
# 학회회원 로그인 후 [ Springer BioChip Journal 열람하기 ] 버튼을 클릭하시면 새창으로 열립니다. |
