Self-assembly of TMA and BTB at the solid-liquid interface in TCB and OB

Hien, D.H.J. van (2017) Self-assembly of TMA and BTB at the solid-liquid interface in TCB and OB. Bachelor's Thesis, Physics.

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Abstract

The self-assembly of the molecules trimesic acid (TMA) and 1,3,5-tris(4-carboxphenyl) benzene (BTB) on HOPG at the solid-liquid interface was investigated using STM. The effect of the solvent on bias-induced conformational switching of supramolecular structures of these molecules was studied. According to literature, TMA and BTB dissolved in nonanoic acid (NA) showed bias-induced switching between supramolecular structures. TMA in the 1,2,4-trichlorobenzene (TCB) solvent was not soluble enough to show self-assembly. TMA in the nonpolar n-octylbenzene (OB) solvent showed two porous networks (the ‘chickenwire’ structure and the ‘flower’ structure) and BTB in OB also showed two porous networks (the ‘chickenwire’ structure and the ‘oblique’ structure), but both showed no bias-induced switching. It was concluded that bias-induced switching does depend on the solvent. Moreover, the coexistence of the ‘chickenwire’ structure and the ‘flower’ structure was observed for TMA in OB, which was not reported yet.

Item Type:	Thesis (Bachelor's Thesis)
Degree programme:	Physics
Thesis type:	Bachelor's Thesis
Language:	English
Date Deposited:	15 Feb 2018 08:28
Last Modified:	15 Feb 2018 08:28
URI:	https://fse.studenttheses.ub.rug.nl/id/eprint/15274

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