Jump to main content
Jump to site search

Issue 18, 2018
Previous Article Next Article

Spermine-directed supramolecular self-assembly of water-soluble AIE-active tetraphenylethylene: nanobelt, nanosheet, globular and nanotubular structures

Author affiliations

Abstract

Tetrasulfonate-tetraphenylethylene (Su-TPE) is non-emissive in water and upon addition of a good solvent such as THF (fTHF = 95%) it displays strong fluorescence emission with a quantum yield of 6.33%. In the presence of spermine, emission of Su-TPE produces higher quantum yields i.e. 1 : 48 molecular ratio gives 7.21%. Furthermore, interaction of spermine with Su-TPE is also shown to be pH dependent. Scanning electron microscopy (SEM) of Su-TPE molecule self-assemblies demonstrates that it produces various supramolecular structures at different Su-TPE : spermine molecular ratios. Nanobelts were obtained at 1 : 12, evolving into microsheets at 1 : 24, microglobular morphology at 1 : 36 and microtubes at 1 : 48 molecular ratios, respectively. Additionally, enhanced fluorescence emission was observed upon increasing the molar ratio of spermine with Su-TPE at pH 7. The physical characterisation of the system was performed using dynamic light scattering and zeta potential measurements.

Graphical abstract: Spermine-directed supramolecular self-assembly of water-soluble AIE-active tetraphenylethylene: nanobelt, nanosheet, globular and nanotubular structures

Back to tab navigation

Supplementary files

Publication details

The article was received on 28 May 2018, accepted on 08 Aug 2018 and first published on 09 Aug 2018


Article type: Paper
DOI: 10.1039/C8NJ02636J
Citation: New J. Chem., 2018,42, 15379-15386
  •   Request permissions

    Spermine-directed supramolecular self-assembly of water-soluble AIE-active tetraphenylethylene: nanobelt, nanosheet, globular and nanotubular structures

    D. D. La, J. N. Malegaonkar, M. A. Kobaisi, R. S. Bhosale, S. V. Bhosale and S. V. Bhosale, New J. Chem., 2018, 42, 15379
    DOI: 10.1039/C8NJ02636J

Search articles by author

Spotlight

Advertisements