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

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)...

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Veröffentlicht in:Faraday discussions 2017-02, Vol.196, p.177-19
Hauptverfasser: Huang, Pei-Yi, Gao, Jhen-Yan, Song, Cheng-Yu, Hong, Jin-Long
Format: Artikel
Sprache:eng
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Zusammenfassung: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.
ISSN:1359-6640
1364-5498
DOI:10.1039/c6fd00146g