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题名: Facile Synthesis of Gold@Graphitized Mesoporous Silica Nanocomposite and Its Surface-Assisted Laser Desorption/lonization for Time-of-Flight Mass Spectroscopy
作者: Xu, Guiju1, 2;  Liu, Shengju1, 2;  Peng, Jiaxi1, 2;  Lv, Wenping1;  Wu, Ren'an1
关键词: gold ;  graphitized mesoporous silica ;  core-shell ;  SALDI-TOF MS
刊名: ACS APPLIED MATERIALS & INTERFACES
发表日期: 2015-01-28
DOI: 10.1021/am507894y
卷: 7, 期:3, 页:2032-2038
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Technology
类目[WOS]: Nanoscience & Nanotechnology ;  Materials Science, Multidisciplinary
研究领域[WOS]: Science & Technology - Other Topics ;  Materials Science
英文摘要: In this work, a novel core-shell structured gold@graphitized mesoporous silica nanocomposite (Au@GMSN) was synthesized by in situ graphitization of template within the mesochannels of mesoporous silica shell on gold core and demonstrated to be promising nanomaterials for surface-assisted laser desorption/ionization time-of-flight mass spectroscopy (SALDI-TOF MS). The integration of the graphitized mesoporous silica with the gold nanoparticles endowed Au@GMSN with large surface areas of graphitic structure, good dispersibility, and strong ultraviolet (UV) absorption. Au@GMSN exerted the synergistic effect on the efficient detection of small-molecular-weight analytes including amino acids, neutral saccharides, peptides, and traditional Chinese medicine. The Au@GMSN-assisted laser desorption/ionization exhibited the following superiorities: high ionization efficiency, low fragmentation interference, favorable salt tolerance, and good reproducibility. Moreover, because of the large hydrophobic inner surface area of the graphitized mesoporous silica shell, the Au@GMSN demonstrated its promising capacity in the pre-enrichment of aromatic analytes prior to SALDI-TOF MS, which favored rapid and sensitive detection.
关键词[WOS]: MALDI-TOF-MS ;  MULTIWALLED CARBON NANOTUBES ;  SMALL MOLECULES ;  DESORPTION-IONIZATION ;  SPECTROMETRY ANALYSIS ;  GRAPHENE OXIDE ;  DESORPTION/IONIZATION ;  MATRIX ;  NANOPARTICLES ;  ENRICHMENT
语种: 英语
WOS记录号: WOS:000348688700078
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/146009
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Natl Chromatog R&A Ctr, CAS Key Lab Separat Sci Analyt Chem, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

Recommended Citation:
Xu, Guiju,Liu, Shengju,Peng, Jiaxi,et al. Facile Synthesis of Gold@Graphitized Mesoporous Silica Nanocomposite and Its Surface-Assisted Laser Desorption/lonization for Time-of-Flight Mass Spectroscopy[J]. ACS APPLIED MATERIALS & INTERFACES,2015,7(3):2032-2038.
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