Scanning tunneling microscope investigation of the currentvoltage characteristics of a newly engineered Π-electron molecule

Autor:	Q. Zheng, Govind Mallick, Madan Dubey, A.E. Wickenden, S. Lastella, A. Srivastava, Shashi P Karna, P.N. Prasad
Rok vydání:	2005
Předmět:	Chemistry Chemical physics law Monolayer Analytical chemistry Molecular electronics Molecule Substrate (electronics) Electron Self-assembly Scanning tunneling microscope Quantum tunnelling law.invention
Zdroj:	5th IEEE Conference on Nanotechnology, 2005..
DOI:	10.1109/nano.2005.1500694
Popis:	Current (I)-Voltage (V) characteristics of the self-assembled monolayer (SAM) of /spl pi/-conjugated, 4,4'-1,4-phenylenebis(methylidynenitrilo)bisbenzene thiolate (PMNBT) adsorbed on Au (111) substrate have been investigated by scanning tunneling microscopy (STM). The measured tunneling current in the case of PMNBT SAM is much higher than that in the case of dodecanemonothiolate (DDMT) molecules. Furthermore, the PMNBT SAMs appear to exhibit a pronounced rectification of the tunneling current not observed in the case of DDMT. Possible reasons for the difference between the I-V characteristics of the two molecules are identified.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8f2c48693e37d89e2499d72794e6cc5f https://doi.org/10.1109/nano.2005.1500694 Zobrazit plný text záznamu