pH-Dependent self-assembly of water-soluble sulphonate-tetraphenylethylene with aggregation-induced emission

La, D, Anuradha, A, Hundal, A, Bhosale, S, Jones, L and Bhosale, S 2018, 'pH-Dependent self-assembly of water-soluble sulphonate-tetraphenylethylene with aggregation-induced emission', Supramolecular Chemistry, vol. 30, no. 1, pp. 1-8.

Document type: Journal Article
Collection: Journal Articles

Title pH-Dependent self-assembly of water-soluble sulphonate-tetraphenylethylene with aggregation-induced emission
Author(s) La, D
Anuradha, A
Hundal, A
Bhosale, S
Jones, L
Bhosale, S
Year 2018
Journal name Supramolecular Chemistry
Volume number 30
Issue number 1
Start page 1
End page 8
Total pages 8
Publisher Taylor and Francis
Abstract The fabrication of well-defined nanostructures with luminescent properties in the solid or aggregated state is of intense interest due to their applications in nano- and biotechnology. We report the synthesis of water-soluble tetraphenylethylene bearing four sulfonate groups as a sodium salt (Su-TPE), and investigations concerning its AIE characteristics by the addition of organic solvent into the aqueous solution, which is the reverse procedure to conventional AIE-active TPE derivatives. The resultant compound is weakly emissive in pure water, however, emits strongly upon addition of THF solvent (with THF fraction > 60%). The emission properties and the morphologies of the aggregates were greatly dependent upon the solution pH. Su-TPE self-assembled into variety of structures in water/THF mixture with pH control, for the first time. Well-defined uniform nanorods with a width of about 200 nm and a length of up to 10 μm were obtained at solution pH of 1. The Su-TPE showed very good mechanochromic properties were observed during the process of grounding and fuming.
Subject Nanochemistry and Supramolecular Chemistry
Keyword(s) Sulfonate-tetraphenylethylene
pH-dependent self-assembly
AIE effect
DOI - identifier 10.1080/10610278.2017.1348604
Copyright notice © 2017 Informa UK Limited, trading as Taylor and Francis Group
ISSN 1061-0278
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