Molecular Chirality and Charge Transfer through Self-Assembled Scaffold Monolayers
- UNCG Author/Contributor (non-UNCG co-authors, if there are any, appear on document)
- Jianjun Wei, Associate Professor (Creator)
- Institution
- The University of North Carolina at Greensboro (UNCG )
- Web Site: http://library.uncg.edu/
Abstract: The effect of molecular chirality on electron transmission is explored by photoelectrochemistry. Thiol-terminated chiral scaffold molecules containing a porphyrin chromophore were self-assembled on gold surfaces to form a monolayer. Incorporation of the SAM-coated gold into an electrochemical cell and illumination with visible light generated a cathodic photocurrent. When using circularly polarized light, the photocurrent displayed an asymmetry (different magnitude of photocurrent for right versus left polarization) that changed with the molecular chirality (left- or right-handedness of the scaffold). A symmetry constraint on the electronic coupling between the porphyrin and the organic scaffold is proposed as a possible mechanism for the photocurrent asymmetry.
Molecular Chirality and Charge Transfer through Self-Assembled Scaffold Monolayers
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Additional Information
- Publication
- J. of Physical Chemistry B.; 2006; 110(3); 1301-1308.
- Language: English
- Date: 2005
- Keywords
- photoelectrochemistry, electron transfer, electrochemical cell, cathodic photocurrent