4.8 Article

Reversible Inversion of Circularly Polarized Luminescence in a Coassembly Supramolecular Structure with Achiral Sulforhodamine B Dyes

Journal

ACS APPLIED MATERIALS & INTERFACES
Volume 15, Issue 21, Pages 25201-25211

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/acsami.2c22349

Keywords

circularly polarized luminescence; CPL inversion; coassembly; supramolecules; achiral dyes

Ask authors/readers for more resources

In this study, the reversible inversion of circularly polarized luminescence (CPL) was achieved in a coassembly supramolecular system by introducing an achiral dye molecule. The chirality of CPL in the coassemblies could be efficiently regulated and inverted by adjusting the amount of the dye. Experimental characterization suggested that the dye could coassemble with the chiral molecules and ionic surfactant to establish a new stable supramolecular structure. The negative-sign CPL could be converted back to the positive-sign CPL using titanium dioxide nanoparticles.
The dynamic control of circularly polarized luminescence (CPL) has far-reaching significance in optoelectronics, information storage, and data encryption. Herein, we reported the reversible inversion of CPL in a coassembly supramolecular system consisting of chiral molecules L4, which contain two positively charged viologen units, and achiral ionic surfactant sodium dodecyl sulfate (SDS) by introducing achiral sulforhodamine B (SRB) dye molecules. The chirality of CPL in the coassemblies can be efficiently regulated and inverted by simply adjusting the amount of SRB. A series of experimental characterization, including optical spectroscopy, electron microscope, 1H NMR, and X-ray scattering measurements, suggested that SRB could coassemble with L4/SDS to establish a new stable L4/SDS/SRB supramolecular structure through electrostatic interactions. Moreover, the negative-sign CPL could revert to the positive-sign CPL if titanium dioxide (TiO2) nanoparticles were used to decompose SRB molecules. The evolution of the CPL inversion process could be cycled at least 5 times without a significant decline in CPL signals when SRB was refueled to the system. Our results provide a facile approach to dynamically regulating the handedness of CPL in a multiple-component supramolecular system via achiral species.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.8
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available