Self-Aggregation of a Naphthalene-Monoimide Amphiphile and Its Charge-Transfer-Complex Driven Morphogenesis in Water

Subhajit Ghosh, Bapan Pramanik, Debapratim Das

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

A detailed study on the self-assembly of a naphthalene-monoimide (NMI)-containing amphiphile (A-1) in aqueous medium is reported. The amphiphile forms micelles at a lower concentration and, with an increase in concentration, the micelles are transformed into vesicles. A detailed thermodynamic study reveals that the micelle-to-vesicle transformation is a spontaneous and entropy driven process. In the presence of an electron donor, 1,5-dihydroxynaphthalene (DHN), the vesicles further transformed into tape-like aggregates. A-1 and DHN form a 1 : 1 charge-transfer complex as shown from the ITC and absorption spectroscopic data. The charge-transfer complexation was also found to be a thermodynamically favorable process. The tapes obtained from the charge-transfer complexes were found to be more conductive that of the vesicles. Various spectroscopic, microscopic, ITC, XRD, and other techniques were utilized to reveal the underlying self-assembly mechanism.

Original languageEnglish
Pages (from-to)867-873
Number of pages7
JournalChemNanoMat
Volume4
Issue number8
DOIs
StatePublished - 1 Aug 2018
Externally publishedYes

Keywords

  • amphiphiles
  • charge transfer
  • naphthalene-monoimide
  • self-assembly
  • vesicles

ASJC Scopus subject areas

  • Biomaterials
  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Materials Chemistry

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