Crystallization-Induced Chirality Transfer in Conformationally Flexible Azahelicene Au(I) Complexes with Circularly Polarized Luminescence Activation DOI Creative Commons

Pingyu Jiang,

Alexander S. Mikherdov, Hajime Ito

et al.

Published: Dec. 28, 2023

Flexible and twisted annulated π-systems exhibit numerous unique desirable features owing to their ability display chirality. However, preventing racemization due dynamic nature of chirality remains a challenge. One promising approach stabilize homochirality in such systems is transfer from chiral auxiliary moiety displaying Herein, we introduce new for stabilization conformationally flexible azahelicene species via crystallization-induced intermolecular Au(I) complexes featuring (dibenzo[c,g]carbazole benzo[c]carbazole) enantio-pure N-heterocyclic carbene (NHC) ligands with complementary tailored shape. Crystallization these not only suppresses the diben-zocarbazole species, but also stabilizes through conjunction between NHC dibenzocarbazole ligands. In benzocarbazole complexes, crystals induces initially achiral ligand. Furthermore, crystallization studied activates circularly polarized luminescence (CPL) properties, which were suppressed solution. Importantly, significant CPL enhancement; that feature within crystal structure dissymmetry factors 5 10 times higher than those without transfer.

Language: Английский

Crystallization-Induced Chirality Transfer in Conformationally Flexible Azahelicene Au(I) Complexes with Circularly Polarized Luminescence Activation DOI Creative Commons

Pingyu Jiang,

Alexander S. Mikherdov, Hajime Ito

et al.

Published: Dec. 28, 2023

Flexible and twisted annulated π-systems exhibit numerous unique desirable features owing to their ability display chirality. However, preventing racemization due dynamic nature of chirality remains a challenge. One promising approach stabilize homochirality in such systems is transfer from chiral auxiliary moiety displaying Herein, we introduce new for stabilization conformationally flexible azahelicene species via crystallization-induced intermolecular Au(I) complexes featuring (dibenzo[c,g]carbazole benzo[c]carbazole) enantio-pure N-heterocyclic carbene (NHC) ligands with complementary tailored shape. Crystallization these not only suppresses the diben-zocarbazole species, but also stabilizes through conjunction between NHC dibenzocarbazole ligands. In benzocarbazole complexes, crystals induces initially achiral ligand. Furthermore, crystallization studied activates circularly polarized luminescence (CPL) properties, which were suppressed solution. Importantly, significant CPL enhancement; that feature within crystal structure dissymmetry factors 5 10 times higher than those without transfer.

Language: Английский

Citations

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