Ionic complex of a rhodamine dye with aggregation-induced emission properties. (28th November 2016)

• Record Type: Journal Article
• Authors: Huang, Pei-Yi; Gao, Jhen-Yan; Song, Cheng-Yu; Hong, Jin-Long
• Is Part Of: Faraday discussions. Volume 196(2017)
• Page Start: 177
• Page End: 190
• Publication Date: 2016-11-28
• Subjects: Chemistry -- Periodicals; Metallurgy -- Periodicals; Electrochemistry -- Periodicals; 540
• DOI: 10.1039/c6fd00146g
• Languages: English
• ISSNs: 1359-6640

Abstract

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.