Molecules (2016)
Update date:2022-08-17
Topics:
Savva, Ioanna
Kalogirou, Andreas S.
Achilleos, Mariliz
Vasile, Eugenia
Koutentis, Panayiotis A.
Krasia-Christoforou, Theodora
Electrospun nanocomposite fibers consisting of crosslinked polyvinylpyrrolidone (PVP) chains and gold nanoparticles (Au NPs) were fabricated, starting from highly stable PVP/Au NP colloidal solutions with different NP loadings, followed by thermal treatment. Information on the morphological characteristics of the fibers and of the embedded Au NPs was obtained by electron microscopy. Cylindrical, bead-free fibers were visualized by Scanning Electron Microscopy (SEM) while Transmission Electron Microscopy (TEM) and Energy Diffraction X-ray (EDX) analysis supported the presence of Au NPs within the fibers and gave information on their morphologies and average diameters. These materials were briefly evaluated as heterogeneous catalytic supports for the gold-catalyzed intramolecular cyclisation of 2-(phenylethynyl)aniline to form 2-phenyl-1H-indole. The performance of the gold catalyst was strongly dependent on the Au NP size, with the system containing the smallest Au NPs being the more effective. Moreover, a slight drop of their catalytic efficiency was observed after three consecutive reaction runs, which was attributed to morphological changes as a consequence of fiber merging.
View MoreABA Chemicals (Shanghai) Limited
Contact:021- 5115 9199-232
Address:Suite 18D, #201 Ningxia Road,
Suzhou Howsine Biological Technology Co.,Ltd
website:http://www.howsine.com
Contact:86-512-67262751
Address:No 3,Weihua Road ,Suzhou Industrial Park ,Jiangsu ,China.
Zhejiang Newfine Industry Co.,Ltd.
Contact:+86-573-82262042
Address:No.225,Dongqing Road, garoms@163.com
Wuhan Better Organic Technology Inc.
Contact:13307163183
Address:Wuhan Economic&Technology Development Zone, Hubei
SEA BRGIHT INDUSTRY CO.,LIMITED
Contact:0086 755 8622 3990
Address:Rm 17B3,GuangCaiXinTianDi Bldg,GuiMiao Rd,NanShan District,Shenzhen,China
Doi:10.1007/BF00506882
(1983)Doi:10.1007/s11176-005-0185-2
(2005)Doi:10.1039/c7ta04762b
(2017)Doi:10.1016/S0040-4039(96)02472-0
(1997)Doi:10.1021/jacs.0c09688
(2021)Doi:10.1002/smll.201700632
(2017)