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Laser engineered graphene paper for matrix-free MS detection and imaging

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Open access
Authors
Qian, K.
Zhou, L.
Liu, Jian
Yang, J.
Xu, H.
Yu, M.
Nouwens, A.
Zou, J.
Monteiro, M.
Yu, C.
Date
2013
Type
Journal Article

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Qian, Kun and Zhou, Liang and Liu, Jian and Yang, Jie and Xu, Hongyi and Yu, Meihua and Nouwens, Amanda and Zou, Jin and Monteiro, Michael J. and Yu, Chengzhong. 2013. Laser engineered graphene paper for matrix-free MS detection and imaging. Scientific Reports. 3 (Article 1415): pp. 1-7.
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Scientific Reports
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This article is published under the Open Access publishing model and distributed under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/3.0/. Please refer to the licence to obtain terms for any further reuse or distribution of this work.

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Abstract

A pulsed laser engineering approach is developed to prepare novel functional graphene paper with graphitic nanospheres homogeneously decorated on the surface and the superior performance of engineered paper is revealed in matrix-free mass spectrometry (MS) detection and imaging. We demonstrate that the stability of graphene paper under intense irradiation can be dramatically increased through a designed laser engineering process by forming densely packed graphitic nanospheres on the paper surface. Moreover, the surface hydrophobicity is enhanced and electric conductivity is improved. The engineered graphene paper can image the invisible micro-patterns of trace amount molecules and increases the detection limit towards diverse molecules by over two orders of magnitude compared to the pristine graphene paper and commercial products in MS analysis.