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Gutierrez Suburu ME, Blanke M, Hepp A, Maus O, Schwab D, Doltsinis NL, Zeier WG, Giese M, Voskuhl J, Strassert CA. Pt(II) Complexes with Tetradentate C^N*N^C Luminophores: From Supramolecular Interactions to Temperature-Sensing Materials with Memory and Optical Readouts. Molecules 2023; 28:7353. [PMID: 37959770 PMCID: PMC10649584 DOI: 10.3390/molecules28217353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 10/10/2023] [Accepted: 10/17/2023] [Indexed: 11/15/2023] Open
Abstract
A series of four regioisomeric Pt(II) complexes (PtLa-n and PtLb-n) bearing tetradentate luminophores as dianionic ligands were synthesized. Hence, both classes of cyclometallating chelators were decorated with three n-hexyl (n = 6) or n-dodecyl (n = 12) chains. The new compounds were unambiguously characterized by means of multiple NMR spectroscopies and mass spectrometry. Steady-state and time-resolved photoluminescence spectroscopy as well quantum chemical calculations show that the effect of the regioisomerism on the emission colour and on the deactivation rate constants can be correlated with the participation of the Pt atom on the excited state. The thermal properties of the complexes were studied by DSC, POM and temperature-dependent steady-state photoluminescence spectroscopy. Three of the four complexes (PtLa-12, PtLb-6 and PtLb-12) present an intriguing thermochromism resulting from the responsive metal-metal interactions involving adjacent monomeric units. Each material has different transition temperatures and memory capabilities, which can be tuned at the intermolecular level. Hence, dipole-dipole interactions between the luminophores and disruption of the crystalline packing by the alkyl groups are responsible for the final properties of the resulting materials.
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Affiliation(s)
- Matias E. Gutierrez Suburu
- Institut für Anorganische und Analytische Chemie, Universität Münster, Corrensstraße 28/30, D-48149 Münster, Germany
- Center of Nanotechnology (CeNTech), Center for Soft Nanosciences (SoN), Cells in Motion Interfaculty Cluster (CiMIC), Universität Münster, Heisenbergstraße 11, D-48149 Munster, Germany
| | - Meik Blanke
- Center for Nanointegration Duisburg-Essen (CENIDE), Faculty of Chemistry (Organic Chemistry), University of Duisburg-Essen, Universitätsstraße 7, D-45141 Essen, Germany
| | - Alexander Hepp
- Institut für Anorganische und Analytische Chemie, Universität Münster, Corrensstraße 28/30, D-48149 Münster, Germany
| | - Oliver Maus
- Institut für Anorganische und Analytische Chemie, Universität Münster, Corrensstraße 28/30, D-48149 Münster, Germany
| | - Dominik Schwab
- Center for Multiscale Theory and Computation, Institut für Festkörpertheorie, Universität Münster, Wilhelm-Klemm-Straße 10, D-48149 Münster, Germany
| | - Nikos L. Doltsinis
- Center for Multiscale Theory and Computation, Institut für Festkörpertheorie, Universität Münster, Wilhelm-Klemm-Straße 10, D-48149 Münster, Germany
| | - Wolfgang G. Zeier
- Institut für Anorganische und Analytische Chemie, Universität Münster, Corrensstraße 28/30, D-48149 Münster, Germany
| | - Michael Giese
- Center for Nanointegration Duisburg-Essen (CENIDE), Faculty of Chemistry (Organic Chemistry), University of Duisburg-Essen, Universitätsstraße 7, D-45141 Essen, Germany
| | - Jens Voskuhl
- Center for Nanointegration Duisburg-Essen (CENIDE), Faculty of Chemistry (Organic Chemistry), University of Duisburg-Essen, Universitätsstraße 7, D-45141 Essen, Germany
| | - Cristian A. Strassert
- Institut für Anorganische und Analytische Chemie, Universität Münster, Corrensstraße 28/30, D-48149 Münster, Germany
- Center of Nanotechnology (CeNTech), Center for Soft Nanosciences (SoN), Cells in Motion Interfaculty Cluster (CiMIC), Universität Münster, Heisenbergstraße 11, D-48149 Munster, Germany
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Mairena A, Mendieta JI, Stetsovych O, Terfort A, Stará IG, Starý I, Jelínek P, Ernst KH. Heterochiral recognition among functionalized heptahelicenes on noble metal surfaces. Chem Commun (Camb) 2019; 55:10595-10598. [DOI: 10.1039/c9cc05317d] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
No matter which heptahelicene derivative, all assemble into heterochiral zigzag chains on gold and silver(111) surfaces.
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Affiliation(s)
- Anaïs Mairena
- Empa, Swiss Federal Laboratories for Materials Science and Technology
- 8600 Dübendorf
- Switzerland
| | - Jesus I. Mendieta
- Institute of Physics of the Czech Academy of Sciences
- 16200 Prague 6
- Czech Republic
| | - Oleksandr Stetsovych
- Institute of Physics of the Czech Academy of Sciences
- 16200 Prague 6
- Czech Republic
| | - Andreas Terfort
- Institut für Anorganische und Analytische Chemie
- Goethe-Universität Frankfurt
- 60438 Frankfurt
- Germany
| | - Irena G. Stará
- Institute of Organic Chemistry and Biochemistry
- Czech Academy of Sciences
- 16610 Prague 6
- Czech Republic
| | - Ivo Starý
- Institute of Organic Chemistry and Biochemistry
- Czech Academy of Sciences
- 16610 Prague 6
- Czech Republic
| | - Pavel Jelínek
- Institute of Physics of the Czech Academy of Sciences
- 16200 Prague 6
- Czech Republic
| | - Karl-Heinz Ernst
- Empa, Swiss Federal Laboratories for Materials Science and Technology
- 8600 Dübendorf
- Switzerland
- Institute of Physics of the Czech Academy of Sciences
- 16200 Prague 6
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