Journal
LANGMUIR
Volume 28, Issue 9, Pages 4453-4458Publisher
AMER CHEMICAL SOC
DOI: 10.1021/la204185p
Keywords
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Funding
- National Research Foundation (NRF) of Korea
- Ministry of Education, Science, and Technology (MEST) of the Korea government [313-2008-2-C00538, 2008-0062074, 2011-0017356, 2008-2004457]
- National Research Foundation of Korea [2008-0062074, 2011-0017356, 313-2008-2-C00538] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Hybrid films of gold nanoparticles and graphene oxides (GOs) were prepared by directly growing gold nanoparticles on supported thin layers of GO films on a glass slide. The gold/GO nanohybrid films were thoroughly investigated using various analytical methods, including Raman spectroscopy and atomic force microscopy. The hybrid film was then applied to laser desorption/ionization (LDI) of small molecules, which enabled mass spectrometric analysis of analytes. After a series of detailed mechanistic studies and systematic investigations, we found that the gold/GO hybrid films serve as a successful LDI platform for small-molecule analysis because of the high desorption efficiency of analytes from the hybrid films without inducing significant fragmentation of analytes. We suggest that the underlying GO films may effectively dissipate excess thermal energy generated by laser irradiation of Au to prevent undesirable analyte fragmentation.
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