Issue 45, 2011

Aggregation induced colour change for phosphorescent iridium(iii) complex-based anionic surfactants

Abstract

We describe a new class of water soluble metallosurfactant molecules based on luminescent neutral iridium(III) complexes. The compounds possess an alkyl chain terminated with a negatively charged group, a sulphate. Due to their amphiphilic nature they assemble in aggregates in water and their photophysical properties, as well as the morphological characterization of the assemblies are presented. In particular, UV-Vis absorption, steady-state and time-resolved emission spectroscopy, dynamic light scattering and scanning electron microscopy techniques have been employed towards the analysis of the assemblies in different media. Comparison with the single components shows that the aggregates have very different photophysical properties. Importantly, the change in colour upon self-assembly is a remarkable feature which could be used for the design of probes which can change properties in different environments.

Graphical abstract: Aggregation induced colour change for phosphorescent iridium(iii) complex-based anionic surfactants

Supplementary files

Article information

Article type
Paper
Submitted
01 Jul 2011
Accepted
13 Sep 2011
First published
27 Oct 2011

Dalton Trans., 2011,40, 12106-12116

Aggregation induced colour change for phosphorescent iridium(III) complex-based anionic surfactants

M. Mauro, G. De Paoli, M. Otter, D. Donghi, G. D'Alfonso and L. De Cola, Dalton Trans., 2011, 40, 12106 DOI: 10.1039/C1DT11251A

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