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. Author manuscript; available in PMC: 2016 Sep 3.
Published in final edited form as: J Phys Chem C Nanomater Interfaces. 2016 Mar 3;120(8):4430–4437. doi: 10.1021/acs.jpcc.5b12736

Figure 4.

Figure 4

a) XPS survey scans measured on the clean TiO2(110) surface and covered with a monolayer of ZnTPP molecules. No band bending was observed upon ZnTPP adsorption as observed from b) the O 1s and c) Ti 2p core levels of the TiO2 substrate before and after ZnTPP monolayer formation.