| AVS 66th International Symposium & Exhibition | |
| 2D Materials | Tuesday Sessions |
| Session 2D-TuP |
| Session: | 2D Poster Session |
| Presenter: | Jose Ortiz-Garcia, University of Connecticut |
| Authors: | J. Ortiz-Garcia, University of Connecticut M. Wolf, University of Connecticut M. Guberman-Pfeffer, University of Connecticut J. Gascon, University of Connecticut D. Thuita, University of Connecticut C. Brückner, University of Connecticut R.C. Quardokus, University of Connecticut |
| Correspondent: | Click to Email |
Meso-tetrakis(pentafluorophenyl ) porphyrin (TFPP) self-assembled islands were imaged on Au (111) using an ultra-high vacuum scanning tunneling microscope (LT-UHV STM). A pulse-solenoid valve was used to deposit submonolayer coverage of TFPP porphyrins on Au(111). A range of bias voltages were used to image occupied and unoccupied electronic states of TFPP. Density functional theory (DFT) was used to calculate the spread in energy levels of both occupied and unoccupied molecular orbitals. We found that the spacing of the energy levels of electronic states shifts depending on the presence and location of hydrogens bonded to the inner nitrogens (locants 21-24).