Magneto‐Chiral Dichroism of Chiral Lanthanide Complexes in the Context of Richardson’s Theory of Optical Activity DOI Open Access

Langit Cahya Adi,

Oliver G. Willis, Alessio Gabbani

et al.

Angewandte Chemie, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 7, 2024

Abstract Here we report on the Magneto‐Chiral Dichroism (MChD) detected through visible and near‐infrared light absorption of two enantiomeric pairs Er III Tm chiral complexes featuring a propeller‐like molecular structure. The magnetic properties show typical features isolated paramagnetic ions associated with 4 I 15/2 3 H 6 ground state terms. MChD spectroscopy shows high g dissymmetry factors ca. 0.12 T −1 0.05 ( =4.0 K B =1.0 T) for , respectively, magnetic‐dipole allowed 13/2 ← 5 transitions. signals were up to room temperature under fields 5.0 T. For first time, results are discussed in context Richardson theory lanthanide optical activity provide clear indications strongest MChD‐active electronic transitions complexes.

Language: Английский

Temperature-dependent NIR-CPL spectra of chiral Yb(iii) complexes DOI Creative Commons
Annika Sickinger, Maxime Grasser, Bruno Baguenard

et al.

Physical Chemistry Chemical Physics, Journal Year: 2024, Volume and Issue: 26(21), P. 15776 - 15783

Published: Jan. 1, 2024

Chiral, enantiopure Yb(III) complexes exhibit circularly polarized luminescence (CPL) in the near infrared (NIR) wavelength region. This CPL is quantified by dissymmetry factor (

Language: Английский

Citations

5
Near-Infrared Magnetic Circularly Polarized Luminescence and Slow Magnetic Relaxation in a Tetrazinyl-Bridged Erbium Metallocene DOI
Niki Mavragani, Diogo A. Gálico, Alexandros A. Kitos

et al.

Journal of the American Chemical Society, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 3, 2025

The magnetic and magneto-optical properties of a tetrazinyl radical-bridged Er

Language: Английский

Citations

0
Room Temperature Crystal Field Splitting of Curium Resolved by Circularly Polarized Luminescence Spectroscopy DOI Creative Commons
Joshua J. Woods, Appie Peterson, Joseph A. Adewuyi

et al.

Chemical Science, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Using a chiral C 2 -symmetrical ligand with picolinate antennae, emissive curium molecular complex was obtained. A well-resolved CPL spectrum obtained allowing for deconvolution of the fundamental energy level Cm 3+ at room temperature.

Language: Английский

Citations

0
The application of chiral groups in circularly polarized luminescent lanthanide complexes DOI

Yanxin Zha,

Zuqiang Bian,

Zhiwei Liu

et al.

Polyhedron, Journal Year: 2025, Volume and Issue: 272, P. 117452 - 117452

Published: Feb. 25, 2025

Language: Английский

Citations

0
Magnetic Circularly Polarized Luminescence with Heterometallic Molecular Cluster‐Aggregates DOI Creative Commons
Diogo A. Gálico, Muralee Murugesu

Advanced Optical Materials, Journal Year: 2024, Volume and Issue: 12(27)

Published: Aug. 5, 2024

Abstract Magnetic circularly polarized luminescence (MCPL) is a technique based on the differential emission of left and right light induced by magnetic field. This counterpart to widely explored circular dichroism. In this work, first demonstration MCPL presented in heterometallic lanthanide(III) systems using two molecular cluster aggregates, {Eu 1 Tb 19 } 3 17 . The results here indicate potential that holds for obtaining highly tuned magneto‐optical materials various applications, such as anti‐counterfeiting materials. Additionally, findings suggest interactions between ions modulate dissymmetry factor, opening possibility development tunable

Language: Английский

Citations

3
Energy exchange between Nd3+ and Er3+ centers within molecular complexes DOI Creative Commons
Diamantoula Maniaki, Annika Sickinger, Leoní A. Barrios

et al.

Chemical Science, Journal Year: 2024, Volume and Issue: 15(44), P. 18295 - 18302

Published: Jan. 1, 2024

A pure heterometallic coordination complex featuring the [ErNdEr] at core has unveiled an unprecedented phenomenon of two simultaneous intramolecular energy transfer between Nd 3+ and Er .

Language: Английский

Citations

2
Electronic Structure of a Neodymium(III) tris(oxydiacetate) Complex from Luminescence data and ab initio Calculations DOI Creative Commons
Villads R. M. Nielsen, Maxime Grasser, Sabina Svava Mortensen

et al.

Published: May 30, 2024

Neodymium(III) is a NIR emissive and magnetic ion, which has found use in various high-technology applications. Yet, accurate predictions of the luminescent properties neodymium(III) based on coordination environment remain to be done. Guideline exists, but build structure-property relationships for this element, more data are needed. Herein, we present high-symmetry starting point. The tris(oxydiacetate) complex was prepared crystallised, access experimentally determined structure allows us quantify symmetry compound perform calculations directly same that investigated experimentally. were electronic computed using state-of-the-art ab initio methods. All transitions range from 490 1400 nm mapped Using Boltzmann population analysis, combination excitation emission spectra revealed crystal field splitting 18 lowest energy Kramers levels could unambiguously resolved. This assignment supported by well reproduced. reported used deduce aqueous solution. Finally, results compared empirical trends literature neodymium(III).

Language: Английский

Citations

1
Electronic Structure of a Neodymium(III) Tris(oxidiacetate) Complex from Luminescence Data and Ab Initio Calculations DOI
Villads R. M. Nielsen, Maxime Grasser, Sabina Svava Mortensen

et al.

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 63(40), P. 18596 - 18607

Published: Aug. 28, 2024

Neodymium(III) is a near-infrared emissive and magnetic ion, which has found use in various high-technology applications. Yet, accurate predictions of the luminescent properties neodymium(III) based on coordination environment remain to be done. Guidelines exist, but build structure-property relationships for this element, more data are needed. Herein, we present high-symmetry starting point. The tris(oxidiacetate) complex was prepared crystallized, access experimentally determined structure allowed us quantify symmetry compound perform calculations directly same that investigated experimentally. were electronic computed using state-of-the-art ab initio methods. All transitions range from 490 1400 nm mapped Using Boltzmann population analysis, combination excitation emission spectra revealed crystal field splitting 18 lowest-energy Kramers levels could unambiguously resolved. This assignment supported by calculations, well reproduced. reported used deduce aqueous solution. Finally, results compared empirical trends literature neodymium(III).

Language: Английский

Citations

1
Tuning the circularly polarized luminescence in homoleptic and heteroleptic chiral CrIII complexes DOI Creative Commons
Maxime Poncet, Céline Besnard, Laure Guénée

et al.

Frontiers in Chemistry, Journal Year: 2024, Volume and Issue: 12

Published: Oct. 9, 2024

A series of highly emissive inert and chiral Cr III complexes displaying positive negative circularly polarized luminescence (CPL) within the near-infrared (NIR) region at room temperature have been prepared characterized to decipher effect ligand substitution on photophysical properties, more specifically chiroptical properties. The helical homoleptic [Cr(dqp-R) 2 ] 3+ (dqp = 2,6-di(quinolin-8-yl)pyridine; R Ph, ≡-Ph, DMA, ≡-DMA (DMA N,N -dimethylaniline)) heteroleptic [Cr(dqp)(L)] (L 4-methoxy-2,6-di(quinolin-8-yl)pyridine (dqp-OMe) or L N , 6 -dimethyl- -di(pyridin-2-yl)pyridine-2,6-diamine (ddpd)) molecular rubies were synthesized as racemic mixtures then resolved isolated into their respective pure PP MM enantiomeric forms by stationary phase HPLC. corresponding enantiomers show two opposite emission bands 700–780 nm range characteristic metal-centered Cr( E’→ 4 ) T 1 ’ → transitions with large g lum ranging from 0.14 0.20 for former transition. In summary, this study reports rational use different ligands properties complexes.

Language: Английский

Citations

1
Near-infrared circularly polarized luminescence enabled by chiral inorganic nanomaterials DOI
Yu-Chen Huang, Yajie Zhou,

Xueru Guo

et al.

Nanoscale, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 30, 2024

Near-infrared circularly polarized luminescence (NIR-CPL) has attracted widespread attention owing to its fascinating characteristic-circular polarization in specific illumination regions-offering advances applications such as information security and cancer detection. For the generation of NIR-CPL, chiral inorganic nanomaterials have emerged desirable candidates due their extraordinary chiroptical properties. In this mini-review, we first highlight recent NIR-CPL produced from nanomaterials. Thereafter, present Finally, prospect challenges field provide new perspectives insights for development novel materials applications.

Language: Английский

Citations

1