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Tailoring exciplex formation in metal-induced supramolecular organization.

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Title: Tailoring exciplex formation in metal-induced supramolecular organization.
Authors: Le-Hoang, Giau1 (AUTHOR), Guénée, Laure2 (AUTHOR), Piguet, Claude1 (AUTHOR) claude.piguet@unige.ch
Source: Dalton Transactions: An International Journal of Inorganic Chemistry. 6/9/2026, Vol. 55 Issue 22, p8481-8488. 8p.
Subjects: Supramolecular chemistry, Stacking interactions, Photoexcitation, Intermolecular interactions, Rare earth metals, Molecular interactions, Ligands (Chemistry), Polarity (Chemistry)
Abstract: The intramolecular π-polarization induced upon binding the bichromophoric ligand L1 to lanthanide ions produces intermolecular hetero-π-stacked pyrene–terimine organization in the resulting complexes as ascertained by ground state supramolecular aggregations leading to dimeric [ L1 Ln(hfac)3]2 (Ln = Y, Eu) units both in the solid state (X-ray crystal structure determination) and in dichloromethane solution (1H NMR titrations). Photoexcitation engenders additional polarization changes which further complicate/extend interaromatic aggregation processes via the formation of light-driven excimers and exciplexes. The various π-stacking intermolecular interactions operating in the [ L1 Y(hfac)3] host are probed by reaction with three competitive aromatics guests: electron-poor nitrobenzene, neutral benzene and electron-rich methoxybenzene. [ABSTRACT FROM AUTHOR]
Copyright of Dalton Transactions: An International Journal of Inorganic Chemistry is the property of Royal Society of Chemistry and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 194430947
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Tailoring exciplex formation in metal-induced supramolecular organization.
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  Data: <searchLink fieldCode="AR" term="%22Le-Hoang%2C+Giau%22">Le-Hoang, Giau</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Guénée%2C+Laure%22">Guénée, Laure</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Piguet%2C+Claude%22">Piguet, Claude</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> claude.piguet@unige.ch</i>
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  Data: <searchLink fieldCode="JN" term="%22Dalton+Transactions%3A+An+International+Journal+of+Inorganic+Chemistry%22">Dalton Transactions: An International Journal of Inorganic Chemistry</searchLink>. 6/9/2026, Vol. 55 Issue 22, p8481-8488. 8p.
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  Data: <searchLink fieldCode="DE" term="%22Supramolecular+chemistry%22">Supramolecular chemistry</searchLink><br /><searchLink fieldCode="DE" term="%22Stacking+interactions%22">Stacking interactions</searchLink><br /><searchLink fieldCode="DE" term="%22Photoexcitation%22">Photoexcitation</searchLink><br /><searchLink fieldCode="DE" term="%22Intermolecular+interactions%22">Intermolecular interactions</searchLink><br /><searchLink fieldCode="DE" term="%22Rare+earth+metals%22">Rare earth metals</searchLink><br /><searchLink fieldCode="DE" term="%22Molecular+interactions%22">Molecular interactions</searchLink><br /><searchLink fieldCode="DE" term="%22Ligands+%28Chemistry%29%22">Ligands (Chemistry)</searchLink><br /><searchLink fieldCode="DE" term="%22Polarity+%28Chemistry%29%22">Polarity (Chemistry)</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The intramolecular π-polarization induced upon binding the bichromophoric ligand L1 to lanthanide ions produces intermolecular hetero-π-stacked pyrene–terimine organization in the resulting complexes as ascertained by ground state supramolecular aggregations leading to dimeric [ L1 Ln(hfac)3]2 (Ln = Y, Eu) units both in the solid state (X-ray crystal structure determination) and in dichloromethane solution (1H NMR titrations). Photoexcitation engenders additional polarization changes which further complicate/extend interaromatic aggregation processes via the formation of light-driven excimers and exciplexes. The various π-stacking intermolecular interactions operating in the [ L1 Y(hfac)3] host are probed by reaction with three competitive aromatics guests: electron-poor nitrobenzene, neutral benzene and electron-rich methoxybenzene. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Dalton Transactions: An International Journal of Inorganic Chemistry is the property of Royal Society of Chemistry and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Type: doi
        Value: 10.1039/d6dt00490c
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      – Code: eng
        Text: English
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        Type: general
      – SubjectFull: Stacking interactions
        Type: general
      – SubjectFull: Photoexcitation
        Type: general
      – SubjectFull: Intermolecular interactions
        Type: general
      – SubjectFull: Rare earth metals
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      – SubjectFull: Molecular interactions
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      – SubjectFull: Ligands (Chemistry)
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      – SubjectFull: Polarity (Chemistry)
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      – TitleFull: Tailoring exciplex formation in metal-induced supramolecular organization.
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            NameFull: Le-Hoang, Giau
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            NameFull: Guénée, Laure
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            NameFull: Piguet, Claude
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            – D: 09
              M: 06
              Text: 6/9/2026
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              Y: 2026
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