Synthesis of an intrinsically chiral cofacial ABCD-Pt(II)-porphyrin (Por) dimer was achieved by the simple Pt-templated synthesis of Por, followed by Suzuki-Miyaura cross-coupling. The isolated enantiomers exhibited bright red circularly polarized phosphorescence with a value above 10 M cm.
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http://dx.doi.org/10.1039/d4cc05684a | DOI Listing |
Org Lett
December 2024
GIR MIOMeT, IU CINQUIMA/Química Inorgánica, Facultad de Ciencias, Universidad de Valladolid, Valladolid E47011, Spain.
A method to synthesize cofacial dimeric porphyrins bearing eight corannulene units has been developed. It relies on the stability of octahedral CO-capped Ru(II) complexes linked by N-donor ligands. This specific arrangement provides an optimal scaffold to accommodate fullerenes by imposing corannulene groups at a precise distance and relative orientation.
View Article and Find Full Text PDFJ Am Chem Soc
December 2024
Faculty of Chemistry, University of Łódź, Tamka 12, 91403 Łódź, Poland.
Cofacial arrangement of two Blatter radicals enforced by the -naphthalene scaffold represents a new approach to stable diradicals with strong through-space interactions. Two stereoisomers of the naphthalene-diradicals, and , are investigated by XRD, VT-EPR, UV-vis, electrochemical, kinetic, and DFT methods. In solutions, both stereoisomers exist as open-shell singlets with Δ = -3.
View Article and Find Full Text PDFJ Am Chem Soc
December 2024
Nanostructured Molecular Systems and Materials group, Organic Chemistry Department, Universidad Autónoma de Madrid, Madrid 28049, Spain.
If we aim to develop efficient synthetic models of protein receptors and enzymes, we must understand the relationships of intra- and intermolecular interactions between hosts and guests and how they mutually influence their conformational energy landscape so as to adapt to each other to maximize binding energies and enhance substrate selectivities. Here, we introduce a novel design of cofacial (Zn)bisporphyrin cages based on dynamic imine bonding, which is synthetically simple, but at the same time highly robust and versatile, affording receptors composed of only -hybridized C and N atoms. The high structural rigidity of these cages renders them ideal hosts for ditopic molecules that can fit into the cavity and bind to both metal centers, leading to association constants as high as 10 M in chloroform.
View Article and Find Full Text PDFChem Commun (Camb)
December 2024
Department of Applied Chemistry for Environment, School of Biological and Environmental Sciences, Kwansei Gakuin University 1 Gakuen Uegahara, Sanda, Hyogo 669-1330, Japan.
Small
December 2024
Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4 Raja S C Mullick Road, Kolkata, 700032, India.
Polycyclic aromatic hydrocarbons (PAHs) are carcinogenic and persistent organic pollutants in water. Their removal is highly challenging for existing generic and nonspecific adsorbents, creating an urgent need for tailored solutions. Herein, a metal-"organic cage" framework, MOF-CC-1, designed for the effective scavenging of PAHs from water is is introduced.
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