Understanding the assembly of π-conjuqated dithiol molecules on GaAs

Dmitry Krapchetov, Hong Ma, Daniel A. Fischer, Alex Jen, Yueh Lin Loo

Research output: Contribution to conferencePaper


The assembly of alkane-based molecular layer on GaAs was analyzed. To verify molecule/substrate bonding, x-ray photoelectron spectroscopy was carried out on freshly-assembled molecular layers on Au and GaAs. Near-edge X-ray absorption fine structure (NEXAFS) spectroscopy was employed to examine the surface coverage and molecular orientation on Au and GaAs. The XPS and NEXAFS results show that the assembly of n-phenyl dithiols (n=3,4) on Au is independent of solvent compositionm suggesting that low solubility of Nh 4OH in THF does not impact molecular assembly.

Original languageEnglish (US)
Number of pages2
StatePublished - Dec 1 2004
Event2004 AIChE Annual Meeting - Austin, TX, United States
Duration: Nov 7 2004Nov 12 2004


Other2004 AIChE Annual Meeting
CountryUnited States
CityAustin, TX

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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    Krapchetov, D., Ma, H., Fischer, D. A., Jen, A., & Loo, Y. L. (2004). Understanding the assembly of π-conjuqated dithiol molecules on GaAs. 2489-2490. Paper presented at 2004 AIChE Annual Meeting, Austin, TX, United States.