2017
DOI: 10.1002/open.201600159
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Synthesis, Characterization, and Antimicrobial Activity of Near‐IR Photoactive Functionalized Gold Multibranched Nanoparticles

Abstract: Surface‐modified gold multibranched nanoparticles (AuMs) were prepared by simple chemical reduction of gold chloride aqueous solution followed by in situ modification by using water‐soluble arenediazonium tosylates with different functional organic groups. Chemical and morphological structures of the prepared nanoparticles were examined by using transmission electron and scanning electron microscopies. The covalent grafting of organic compounds was confirmed by scanning electron microscopy with energy dispersi… Show more

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Cited by 25 publications
(15 citation statements)
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“…The grating structure is screened by the attached AuMs, which indicates the full covering of the pristine surface during the reaction time. 34 It is well known that the proximity of noble metal nanostructures to each other can induce a significant shift of their plasmon resonance wavelength position. 35 With the aim to estimate the mean positions (SPP in the case of Ag grating and LSP in the case of AuMs), as well as their potential shift, resulting from the plasmonic coupling, a series of UV measurements (presented in Fig.…”
Section: Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…The grating structure is screened by the attached AuMs, which indicates the full covering of the pristine surface during the reaction time. 34 It is well known that the proximity of noble metal nanostructures to each other can induce a significant shift of their plasmon resonance wavelength position. 35 With the aim to estimate the mean positions (SPP in the case of Ag grating and LSP in the case of AuMs), as well as their potential shift, resulting from the plasmonic coupling, a series of UV measurements (presented in Fig.…”
Section: Resultsmentioning
confidence: 99%
“…Then the AuMs were dispersed in 3 mL of water and were purified three times by centrifugation at 5000 rpm for 10 min. 34 For further use, the resultant precipitates were redissolved in deionized water.…”
Section: Preparation Of Au Nanoparticlesmentioning
confidence: 99%
“…AuMs (Au multibranched nanoparticles) were prepared according to the procedure published in [31]. Freshly prepared fibers with Au layer were immersed into a methanol solution of BFDT (5×10 −3 molL −1 ) for 24 h. After incubation, the samples modified by BFDT were washed with methanol and immersed into solutions of AuMs for 24 h. Finally, the samples were cleaned in an ultrasonic bath (in distilled water) and dried under a N 2 flow.…”
Section: Samples Preparationmentioning
confidence: 99%
“…On the other hand, gold nanoparticles exhibit low toxicity [ 8 , 9 ]; however, sometimes their intrinsic size and shape-dependent antibacterial activity seems to be insufficient. To overcome this problem, the surface modification of the plasmonic nanoparticles could be an answer, through use of controlled grafting of different charged molecules facilitating specific binding to the bacterial membrane, and, consequently, generating an increase of their antibacterial activity [ 10 ]. Taking profit of the tunable sizes and shapes, as well as their easy surface functionalization, differently-functionalized gold nanoparticles started to be widely investigated as antibacterial, antifungal, antibiotic film platforms [ 11 ].…”
Section: Introductionmentioning
confidence: 99%