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Published May 31, 2001 | public
Journal Article

Joint Experimental and Theoretical Characterization of the Electronic Structure of 4,4'-Bis(N-m-tolyl-N-phenylamino)biphenyl (TPD) and Substituted Derivatives

Abstract

We investigate by means of gas-phase ultraviolet photoelectron spectroscopy complemented by quantum-chemical calculations how the frontier levels of the 4,4'-bis(N-m-7tolyl-N-phenylamino)biphenyl (TPD) molecule are affected upon substitution of the terminal aryl rings with methoxy groups or fluorine atoms. These results provide strategies to modulate energy barriers at metal/organic or organic/organic interfaces involving TPD and its derivatives; it is shown that the change in the energy of the HOMO level of TPD upon derivatization is strongly affected by inductive effects taking place in the σ skeleton.

Additional Information

© 2001 American Chemical Society. Received: August 31, 2000; In Final Form: February 23, 2001. Publication Date (Web): May 5, 2001. This work has been partly supported by the Belgian Federal Government (Pôle d'Attraction Interuniversitaire en Chimie Supramoléculaire et Catalyse, PAI 4/11); the Belgian National Fund for Scientific Research (FNRS); Office of Naval Research (ONR) through the MURI Center for Advanced Multifunctional Nonlinear Optical Polymers and Molecular Assemblies (CAMP) and the National Science Foundation (CHE-0078819); and the Francqui Foundation, Belgium, through award of a postdoctoral fellowship to M.M. The measurements of the gas-phase UPS spectra were carried out in the Center for Gas-Phase Electron Spectroscopy, The University of Arizona. J.C. is Research Associate of the FNRS.

Additional details

Created:
August 19, 2023
Modified:
October 25, 2023