AVS 57th International Symposium & Exhibition
    Surface Science Tuesday Sessions
       Session SS-TuP

Paper SS-TuP11
Stereoselective Adsorption Configurations of S-Proline Molecules via N Dative Bonding on Ge(100)

Tuesday, October 19, 2010, 6:00 pm, Room Southwest Exhibit Hall

Session: Surface Science Poster Session
Presenter: Y.-S. Youn, Korea Advanced Institute of Science and Technology (KAIST), Korea
Authors: Y.-S. Youn, Korea Advanced Institute of Science and Technology (KAIST), Korea
K.-J. Kim, Pohang Accelerator Laboratory, Korea
B. Kim, Pohang Accelerator Laboratory, Korea
D.H. Kim, Daegu University, Korea
H. Lee, Sookmyung Women’s University, Korea
S. Kim, Korea Advanced Institute of Science and Technology (KAIST), Korea
Correspondent: Click to Email
The adsorption configurations of S-proline on Ge(100) were studied using scanning tunneling microscopy (STM), density functional theory (DFT) calculations, and high-resolution core-level photoemission spectroscopy (HRCLPES). We identified three adsorption structures of S-proline on Ge(100) through analysis of the STM images, DFT calculations, and HRCLPES results: (i) an ‘intrarow O–H dissociated and N dative bonded structure’, (ii) an ‘O–H dissociation structure’, and (iii) an ‘N dative bonded structure’. Moreover, because adsorption through the N atom of S-proline produces a new chiral center due to symmetry reduction by N dative bonding, we found that the adsorption configurations have either (R,S) and (S,S) chirality with a preference for reaction at the Re face.