In this communication we describe a helically chiral push-pull molecule named 9,10-dimethoxy-[7]helicene diimide, displaying fluorescence (FL) and circularly polarised luminescence (CPL) over nearly the entire visible spectrum dependent on solvent polarity. The synthesised molecule exhibits an unusual solvent polarity dependence of FL quantum yield and nonradiative rate constant, as well as remarkable and values along with high configurational stability.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1039/d3cc04470j | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Near-Infrared Magnetic Circularly Polarized Luminescence and Slow Magnetic Relaxation in a Tetrazinyl-Bridged Erbium Metallocene.
J Am Chem Soc
January 2025
Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada.
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 PDFEndowing 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 PDFDiscriminating 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 PDFPrinted Twisted Thin Films with Near-Infrared Bandgaps and Tailored Chiroptical Properties.
ACS Appl Opt Mater
December 2024
School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245, United States.
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.
2,3:6,7‒Naphthalenediimide-based Chiral Triangular Macrocycle: Self-Assembled Helix, Outer π-surface Directed Co-assembly and Circularly Polarized Luminescence.
Angew Chem Int Ed Engl
January 2025
Institute of Chemistry, CAS, Laboratory of Colloid and Interface Scie, Zhong Guancun, 100080, Beijing, CHINA.
Here, we report the synthesis and self-assembly of a novel chiral 2,3:6,7‒naphthalenediimide-based triangular macrocycle (NDI-∆) and their chiroptical properties. The enantiomeric NDI-∆ is synthesized by condensation of (RR) or (SS)-trans-1,2-cyclohexanediamine and 2,3,6,7-naphthalenetetracarboxylic 2,3:6,7-dianhydride, in which the chirality of the macrocycles is controlled by the diamine. With the rigid outer π-surface, the macrocycle showed unique chiroptical properties and self-assembly modes.
View Article and Find Full Text PDFWant 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!