Unusual Magnetic Field Responsive Circularly Polarized Luminescence Probes with Highly Emissive Chiral Europium(III) Complexes.

ABSTRACT: Chirality is ubiquitous within biological systems where many of the roles and functions are still undetermined. Given this, there is a clear need to design and develop sensitive chiral optical probes that can function within a biological setting. Here we report the design and synthesis of magnetically responsive Circularly Polarized Luminescence (CPL) complexes displaying exceptional photophysical properties (quantum yield up to 31?% and |g_lum | up to 0.240) by introducing chiral substituents onto the macrocyclic scaffolds. Magnetic CPL responses are observed in these chiral Eu^III complexes, promoting an exciting development to the field of magneto-optics. The |g_lum | of the ⁵ D₀ ? ⁷ F₁ transition increases by 20?% from 0.222 (0?T) to 0.266 (1.4?T) displaying a linear relationship between the ?g_lum and the magnetic field strength. These Eu^III complexes with magnetic CPL responses, provides potential development to be used in CPL imaging applications due to improved sensitivity and resolution.

SUBMITTER: Zhang J 

PROVIDER: S-EPMC7821146 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature