Inherently chiral belt-shaped conjugated macrocycles with strong fluorescence and circularly polarized luminescence

Abstract

A pair of inherently chiral belt-shaped conjugated macrocycles were conveniently synthesized starting from 2,7-fluoren[3]arene triflate, and they not only exhibited green fluorescence, but also showed circularly polarized luminescence with |glum|...

Recent advances in the synthesis and applications of macrocyclic arenes

“…In particular, starting from easily available 11, a series of C(sp 3 )-bridged [6]cycloparaphenylenes with rigid belt-shaped structures and a beltshaped conjugated macrocycle with strong blue fluorescence could further be constructed. 36,37 2.1.4. Calix[n]carbazoles.…”

Electrochemical CO2 Reduction to Methane by Cu Complex‐Derived Catalysts in Non‐Aqueous Media

“…Furthermore, phenanthroline-based Cu complexes have been employed for electrochemical CO 2 reduction in non-aqueous and aqueous solution. [24,27,28] Simpson et al and Wang et al studied phenanthroline Cu complexes mainly producing two electron products (CO and HCOOH) in DMSO [24] and water solution, [27] respectively. On the other hand, Du et al recently studied several phenanthroline-based Cu complexes in aqueous media.…”

“…The in-situ formed Cu complex-derived catalysts selectively produced C 2 products (ethylene and ethanol). [28] Four different electrolytes (TBAP, TBAPF 6 , NaClO 4 and LiTFSI) were chosen to test whether the solubility of organic or alkali metal ions affect the catalyst deposition, and ultimately, CO 2 reduction product selectivity. Dimethylformamide (DMF) was chosen as the organic solvent due to its stability and prior use for a variety of metal complexes tested for CO 2 reduction.…”

“…The destabilization by the methyl groups may aid the deposition of a Cu complex‐based catalyst, i. e. it falls apart more easily after ligand reduction. Furthermore, phenanthroline‐based Cu complexes have been employed for electrochemical CO 2 reduction in non‐aqueous and aqueous solution [24,27,28] . Simpson et al.…”

Self-Assembled Charge-Transfer Chiral π-Materials: Stimuli-Responsive Circularly Polarized Luminescence and Chiroptical Photothermic Effects

“…Charge-transfer (CT) interactions − between electron-rich and electron-deficient chromophores have been extensively applied to construct novel organic π-materials, − which show improved performances in the field of solar cells, biomedicine, and recent circularly polarized luminescent (CPL) materials. , Originating from the CT-directed electronic redistributions within the CT complexes and their assemblies, CT interactions driven by dipole–dipole interactions could enhance the values of magnetic dipole transition moments vectors, − which are thus expected to amplify the luminescent dissymmetry factor ( g lum ), a key parameter of superior CPL materials, − according to the definition of g lum = 4| m |cos θ/|μ| ( m and μ are the magnetic and electric transition moment, respectively). ,− Therefore, it is feasible to design and construct advanced CPL materials based on CT interactions with satisfied g lum values as unambiguously revealed in recent research. ,− Besides, CT complexes usually have relatively large absorption coefficients, , which might be utilized to develop chiroptical photothermic effect materials. − However, the full utilization of both CPL and CPE properties in a single supramolecular CT system is still challenging.…”