Selective adsorption of L-tartaric acid on gemini-type self-assembled monolayers

Lloyd F.N. Ah Qune, Kenji Makino, Kaoru Tamada, Wei Chen, Andrew T.S. Wee

研究成果: Contribution to journalArticle査読

8 被引用数 (Scopus)

抄録

Synchrotron photoelectron spectroscopy and X-ray absorption spectroscopy studies of cationic self-assembled monolayers (SAMs) of quaternary ammonium (QA) sulfur derivates prepared on gold substrates were performed to investigate the adsorption mechanism of L-tartaric acid on a gemini-structured didodecyl dithiol (HS-gQA-SH). Using soft X-rays from a synchrotron light source, the carboxylate (deprotonated carboxylic acid) of L-tartaric acid was found to undergo an exchange reaction with the native bromide counterion of HS-gQA-SH-SAM. We also report the first soft XPS spectra of the bromide counterion of the QA. These results indicate the necessary chemical architecture via distance matching for exchange reactions to occur between complex molecules and point the way to more effective molecular recognition systems.

本文言語英語
ページ(範囲)3049-3053
ページ数5
ジャーナルJournal of Physical Chemistry C
112
8
DOI
出版ステータス出版済み - 2 28 2008
外部発表はい

All Science Journal Classification (ASJC) codes

  • 電子材料、光学材料、および磁性材料
  • エネルギー(全般)
  • 物理化学および理論化学
  • 表面、皮膜および薄膜

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