Circularly polarized luminescence on dinuclear Tb(iii) and Eu(iii) complexes with (S-) and (R-) 2-phenylpropionate.

Dalton Trans

Departament de Química Inorgànica i Orgànica, Secció de Química Inorgànica, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain.

Published: May 2017

The reaction of Ln(NO)·6HO (Ln = Tb and Eu) with (S)-(+)-2-phenylpropionic acid (S-HL) and 1,10-phenanthroline (phen) in EtOH/HO allows the isolation of the dinuclear chiral compounds of the formula [Ln(S-L)(phen)]·2.5·S-HL in which Ln = Tb (S-1), Ln = Eu (S-2). The same synthesis by using (R)-(-)-2-phenylpropionic acid (R-HL) instead of (S)-(+)-2-phenylpropionic acid allows the isolation of the enantiomeric compounds with the formula [Ln(R-L)(phen)]·2.5·R-HL where Ln = Tb (R-1), Ln = Eu (R-2). All compounds show sensitized luminescence. The luminescence study, including the circularly polarized luminescence spectra of the four compounds, is reported. The magnetic behavior of S-1 and S-2 is also reported.

Download full-text PDF

Source
http://dx.doi.org/10.1039/c6dt04686jDOI Listing

Publication Analysis

Top Keywords

circularly polarized
8
polarized luminescence
8
s-+-2-phenylpropionic acid
8
allows isolation
8
compounds formula
8
s-1 s-2
8
luminescence
4
luminescence dinuclear
4
dinuclear tbiii
4
tbiii euiii
4

Similar Publications

Chiral Nanostructures from Artificial Helical Polymers: Recent Advances in Synthesis, Regulation, and Functions.

ACS Nano

January 2025

School of Science and Engineering, Shenzhen Institute of Aggregate Science and Technology, The Chinese University of Hong Kong, Shenzhen (CUHK-Shenzhen), Guangdong 518172, P.R. China.

Helical structures such as right-handed double helix for DNA and left-handed α-helix for proteins in biological systems are inherently chiral. Importantly, chirality at the nanoscopic level plays a vital role in their macroscopic chiral functionalities. In order to mimic the structures and functions of natural chiral nanoarchitectures, a variety of chiral nanostructures obtained from artificial helical polymers are prepared, which can be directly observed by atomic force microscopy (AFM), scanning tunneling microscopy (STM), scanning electron microscopy (SEM), and transmission electron microscopy (TEM).

View Article and Find Full Text PDF

The magnetic and magneto-optical properties of a tetrazinyl radical-bridged Er metallocene, [(Cp*Er)(bpytz)][BPh] (; Cp* = pentamethylcyclopentadienyl, bpytz = 3,6-bis(3,5-dimethyl-pyrazolyl)-1,2,4,5-tetrazine), are reported. As confirmed by these studies strong Ln-rad coupling is achieved, with exhibiting slow magnetic relaxation under a 1000 Oe dc field. The optical and magneto-optical profile of is completed by both near-infrared (NIR) luminescence and magnetic circularly polarized luminescence (MCPL), representing the first example of NIR MCPL with Er.

View Article and Find Full Text PDF

Endowing single-crystal polymers with circularly polarized luminescence.

Nat Commun

January 2025

Key Laboratory for Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, China.

The preparation of single-crystal polymers with circularly polarized luminesce (CPL) remains a challenging task in chemistry and materials science. Herein, we present the single-crystal-to-single-crystal topochemical photopolymerization of a chiral organic salt to achieve this goal. The in-situ reaction of 1,4-bis((E)-2-(pyridin-4-yl)vinyl)benzene (1) with chiral (+)- or (-)-camphorsulfonic acid (CSA) gives the monomer crystal 1[( + )/( - )-CSA] showing yellow CPL with a high luminescent dissymmetry factor |g| of 0.

View Article and Find Full Text PDF

Discriminating circular polarization of light: Left or right?

Light Sci Appl

January 2025

Department of Material Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Republic of Korea.

Achiral dielectric nanostructures provide an efficient method for discriminating left- and right-circularly polarized photons, leveraging the photothermoelectric effect.

View Article and Find Full Text PDF
Article Synopsis
  • The study presents a method for creating twisted helical cellulose nanocrystal films using 3D printing, achieving unique optical properties.
  • The films exhibit high transparency and dual circular polarization, with different types depending on the printing orientation.
  • These materials have potential applications in photonics, thermal management, and energy efficiency due to their ability to manipulate light in the near-infrared region.
View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!