Volume 196, 2017

Ionic complex of a rhodamine dye with aggregation-induced emission properties

Abstract

An AIE-active rhodamine based luminogen was prepared via a complexation reaction between non-emissive rhodamine hydrazide (RdH) and bulky camphorsulfonic acid (CSA). Besides acting to open the spirolactam ring of RdH, CSA also imposes a rotational restriction on the resultant ionic complex, RdH(CSA)x. Without CSA, the analogous complex RdH(HCl)3 is a luminogen with aggregation-caused quenching (ACQ) properties. The ionic bonds of RdH(CSA)3 are sensitive to several external stimuli and therefore it is a luminescent sensor for metal ions, organic amines and the blood protein bovine serum albumin (BSA). Besides being a sensor for BSA, the ionic RdH(CSA)3 is also a denaturant capable of uncoiling the peptide chain of BSA.

Associated articles

Article information

Article type
Paper
Submitted
07 jun 2016
Accepted
29 jun 2016
First published
28 nov 2016

Faraday Discuss., 2017,196, 177-190

Ionic complex of a rhodamine dye with aggregation-induced emission properties

P. Huang, J. Gao, C. Song and J. Hong, Faraday Discuss., 2017, 196, 177 DOI: 10.1039/C6FD00146G

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