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Xi Ling, Juanxia Wu, Weigao Xu and Jin Zhang Probing the Effect of Molecular Orientation on the Intensity of Chemical Enhancement Using Graphene-Enhanced Raman Spectroscopy Small 8

Article first published online: 23 FEB 2012 | DOI: 10.1002/smll.201102223

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A planar molecule, copper phthalocyanine (CuPc), is used to study molecular orientation effects in graphene-enhanced Raman spectroscopy. Annealing allows the CuPc molecule in a Langmuir–Blodgett film to change orientation from upstanding to lying down. The magnitude of the chemical enhancement, which is highly sensitive to molecular orientation, can be used to evaluate the degree of interaction between the molecules and graphene.

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