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Crucial Factors Regulating Intramolecular Charge-Transfer-Based Radiative Efficiency in ortho-Carboranyl Luminophores: Planarity between Substituted Biphenyl Rings

[Image: see text] o-Carboranyl compounds contain specific geometries, ranging from planar to orthogonally distorted biphenyl rings. Herein, 13 o-carboranyl compounds, 1HF–13PP, were synthesized and fully characterized to determine the impact of structural formation of the aromatic group appended wit...

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Autores principales: Kim, Mingi, Ryu, Chan Hee, You, Dong Kyun, Hong, Ju Hyun, Lee, Kang Mun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2022
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9281304/
https://www.ncbi.nlm.nih.gov/pubmed/35847313
http://dx.doi.org/10.1021/acsomega.2c03344
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author Kim, Mingi
Ryu, Chan Hee
You, Dong Kyun
Hong, Ju Hyun
Lee, Kang Mun
author_facet Kim, Mingi
Ryu, Chan Hee
You, Dong Kyun
Hong, Ju Hyun
Lee, Kang Mun
author_sort Kim, Mingi
collection PubMed
description [Image: see text] o-Carboranyl compounds contain specific geometries, ranging from planar to orthogonally distorted biphenyl rings. Herein, 13 o-carboranyl compounds, 1HF–13PP, were synthesized and fully characterized to determine the impact of structural formation of the aromatic group appended with the o-carborane to estimate the efficiency of their radiative decay process. All the compounds exhibited significant intramolecular charge transfer (ICT)-based emission in the crystalline state at 298 K. Remarkably, increasing the distorted dihedral angles between biphenyl rings gradually decreased the emission efficiencies. Furthermore, their radiative decay constants decreased linearly with increasing dihedral angles, which demonstrated the inversely proportional relationship between these two factors. These findings distinctly suggest that the planar or distorted geometry of substituted aryl groups can strongly affect the efficiency of the ICT-based radiative process in o-carboranyl luminophores.
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spelling pubmed-92813042022-07-15 Crucial Factors Regulating Intramolecular Charge-Transfer-Based Radiative Efficiency in ortho-Carboranyl Luminophores: Planarity between Substituted Biphenyl Rings Kim, Mingi Ryu, Chan Hee You, Dong Kyun Hong, Ju Hyun Lee, Kang Mun ACS Omega [Image: see text] o-Carboranyl compounds contain specific geometries, ranging from planar to orthogonally distorted biphenyl rings. Herein, 13 o-carboranyl compounds, 1HF–13PP, were synthesized and fully characterized to determine the impact of structural formation of the aromatic group appended with the o-carborane to estimate the efficiency of their radiative decay process. All the compounds exhibited significant intramolecular charge transfer (ICT)-based emission in the crystalline state at 298 K. Remarkably, increasing the distorted dihedral angles between biphenyl rings gradually decreased the emission efficiencies. Furthermore, their radiative decay constants decreased linearly with increasing dihedral angles, which demonstrated the inversely proportional relationship between these two factors. These findings distinctly suggest that the planar or distorted geometry of substituted aryl groups can strongly affect the efficiency of the ICT-based radiative process in o-carboranyl luminophores. American Chemical Society 2022-06-30 /pmc/articles/PMC9281304/ /pubmed/35847313 http://dx.doi.org/10.1021/acsomega.2c03344 Text en © 2022 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by-nc-nd/4.0/Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Kim, Mingi
Ryu, Chan Hee
You, Dong Kyun
Hong, Ju Hyun
Lee, Kang Mun
Crucial Factors Regulating Intramolecular Charge-Transfer-Based Radiative Efficiency in ortho-Carboranyl Luminophores: Planarity between Substituted Biphenyl Rings
title Crucial Factors Regulating Intramolecular Charge-Transfer-Based Radiative Efficiency in ortho-Carboranyl Luminophores: Planarity between Substituted Biphenyl Rings
title_full Crucial Factors Regulating Intramolecular Charge-Transfer-Based Radiative Efficiency in ortho-Carboranyl Luminophores: Planarity between Substituted Biphenyl Rings
title_fullStr Crucial Factors Regulating Intramolecular Charge-Transfer-Based Radiative Efficiency in ortho-Carboranyl Luminophores: Planarity between Substituted Biphenyl Rings
title_full_unstemmed Crucial Factors Regulating Intramolecular Charge-Transfer-Based Radiative Efficiency in ortho-Carboranyl Luminophores: Planarity between Substituted Biphenyl Rings
title_short Crucial Factors Regulating Intramolecular Charge-Transfer-Based Radiative Efficiency in ortho-Carboranyl Luminophores: Planarity between Substituted Biphenyl Rings
title_sort crucial factors regulating intramolecular charge-transfer-based radiative efficiency in ortho-carboranyl luminophores: planarity between substituted biphenyl rings
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9281304/
https://www.ncbi.nlm.nih.gov/pubmed/35847313
http://dx.doi.org/10.1021/acsomega.2c03344
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