Anthraquinone-2-carboxylic Acid Deposited from Solution onto Native Oxide Surfaces of Al Films Characterized by Inelastic Electron Tunneling Spectroscopy, X-ray Photoelectron Spectroscopy, and Atomic Force Microscopy

Anthraquinone-2-carboxylic acid (AQ-2-COOH) deposited from acetone solutions onto native oxide surfaces of Al films was characterized by inelastic electron tunneling spectroscopy (IETS), X-ray photoelectron spectroscopy (XPS), and atomic force microscopy (AFM). These surface analyses show that AQ-2-COOH is adsorbed on the oxide as both a uniform film of anions on a nanometer scale and micron-sized particles of neutral molecules.