期刊
ACS APPLIED MATERIALS & INTERFACES
卷 4, 期 4, 页码 2088-2095出版社
AMER CHEMICAL SOC
DOI: 10.1021/am300054z
关键词
assembly; carbon nanotube; graphene; mass spectrometry; surface modification
资金
- National Research Foundation of Korea (NRF)
- Korean government (MEST) [2010-0000602, 2011-0017356, 2011-0020322]
- NRF
- MEST [2008-2004457]
- MEST in Korea
- National Research Foundation of Korea [2011-0017356, 2008-2004457] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Graphene, graphene oxide (GO), and multi-walled carbon nanotube (MWCNT) have been actively explored as matrix for laser desorption/ionization mass spectrometry (LDI-MS) in place of conventional organic matrix. Recently, the GO/MWCNT double layer films on a solid substrate showed excellent applicability in small molecule analysis, enzyme activity assay and tissue imaging. In the present study, LDI processes of small molecules on multilayers of alternating MWCNT and GO hybrid films were thoroughly investigated. We found that the LDI efficiency of small molecules was affected by thickness, assembly sequence and surface roughness of the hybrid films that were controlled by varying the number of layer-by-layer (LBL) assembly cycles. The study would provide useful basic information to develop an efficient LDI-MS platform based on carbon nanomaterials.
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