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Maroń AM, Cannelli O, Socie EC, Lodowski P, Oppermann M, Machura B, Chergui M. Early bird or night owl? Controlling the ultrafast photodynamics of triphenylamine substituted 2,2':6',2''-terpyridine. Phys Chem Chem Phys 2024; 26:6265-6276. [PMID: 38305747 DOI: 10.1039/d3cp04492k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2024]
Abstract
Controlling the ultrafast photodynamics of metal-free organic molecules has great potential for technological applications. In this work, we use solvent polarity and viscosity as "external knobs" to govern the photodynamics of an electron-donating derivative of 2,2':6',2''-terpyridine (terpy), namely 4'-(4-(di(4-tert-butylphenyl)amine)phenyl)-2,2':6',2''-terpyridine (tBuTPAterpy). We combine femtosecond fluorescence upconversion (FlUC), transient absorption (TA) and quantum mechanical calculations to provide a comprehensive description of the tBuTPAterpy's photodynamics. Our results demonstrate that, by changing the solvent, the time scale of light-induced conformational changes of the system can be tuned over two orders of magnitude, controlling the tBuTPAterpy fluorescence spectral region and yield. As a result, depending on the local environment, tBuTPAterpy can act either as an "early bird" or a "night owl", with a tunability that makes it a promising candidate for metal-free sensors.
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Affiliation(s)
- Anna Maria Maroń
- Institute of Chemistry, University of Silesia, Szkolna 9, 40-007 Katowice, Poland.
| | - Oliviero Cannelli
- Laboratory of Ultrafast Spectroscopy (LSU) and Lausanne Centre for Ultrafast Science (LACUS), École Polytechnique Fédérale de Lausanne, ISIC CH H1 625, Station 6, CH-1015, Lausanne, Switzerland
- Center for Free-Electron Laser Science, DESY, Notkestraße 85, 22607 Hamburg, Germany.
| | - Etienne Christophe Socie
- Laboratory of Ultrafast Spectroscopy (LSU) and Lausanne Centre for Ultrafast Science (LACUS), École Polytechnique Fédérale de Lausanne, ISIC CH H1 625, Station 6, CH-1015, Lausanne, Switzerland
| | - Piotr Lodowski
- Institute of Chemistry, University of Silesia, Szkolna 9, 40-007 Katowice, Poland.
| | - Malte Oppermann
- Laboratory of Ultrafast Spectroscopy (LSU) and Lausanne Centre for Ultrafast Science (LACUS), École Polytechnique Fédérale de Lausanne, ISIC CH H1 625, Station 6, CH-1015, Lausanne, Switzerland
- Department of Chemistry, University of Basel, Klingelbergstrasse 80, 4056 Basel, Switzerland
| | - Barbara Machura
- Institute of Chemistry, University of Silesia, Szkolna 9, 40-007 Katowice, Poland.
| | - Majed Chergui
- Laboratory of Ultrafast Spectroscopy (LSU) and Lausanne Centre for Ultrafast Science (LACUS), École Polytechnique Fédérale de Lausanne, ISIC CH H1 625, Station 6, CH-1015, Lausanne, Switzerland
- Elettra - Sincrotrone Trieste S.C.p.A., S.S.14 Km.163, 5 in Area Science Park, I - 34149, Trieste, Italy
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Maroń AM, Choroba K, Małecki JG, Kula S, Malicka E. Platinum(II) coordination compound with 4′-[4-(dimethylamino)phenyl]-2,2′:6′,2″-terpyridine – The new insight into the luminescence behavior and substituent effect. Polyhedron 2020. [DOI: 10.1016/j.poly.2020.114502] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Lázaro A, Serra O, Rodríguez L, Crespo M, Font-Bardia M. Luminescence studies of new [C,N,N′] cyclometallated platinum(ii) and platinum(iv) compounds. NEW J CHEM 2019. [DOI: 10.1039/c8nj05492d] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
New [C,N,N′]-cyclometallated platinum(ii) and platinum(iv) complexes are prepared and their emission properties are reported.
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Affiliation(s)
- Ariadna Lázaro
- Departament de Química Inorgànica i Orgànica
- Secció de Química Inorgànica
- Facultat de Química
- Universitat de Barcelona
- 08028-Barcelona
| | - Oriol Serra
- Departament de Química Inorgànica i Orgànica
- Secció de Química Inorgànica
- Facultat de Química
- Universitat de Barcelona
- 08028-Barcelona
| | - Laura Rodríguez
- Departament de Química Inorgànica i Orgànica
- Secció de Química Inorgànica
- Facultat de Química
- Universitat de Barcelona
- 08028-Barcelona
| | - Margarita Crespo
- Departament de Química Inorgànica i Orgànica
- Secció de Química Inorgànica
- Facultat de Química
- Universitat de Barcelona
- 08028-Barcelona
| | - Mercè Font-Bardia
- Unitat de Difracció de RX
- Centres Científics i Tecnològics de la Universitat de Barcelona (CCiTUB)
- Universitat de Barcelona
- 08028-Barcelona
- Spain
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Sorg JR, Wehner T, Matthes PR, Sure R, Grimme S, Heine J, Müller-Buschbaum K. Bismuth as a versatile cation for luminescence in coordination polymers from BiX 3/4,4'-bipy: understanding of photophysics by quantum chemical calculations and structural parallels to lanthanides. Dalton Trans 2018; 47:7669-7681. [PMID: 29766175 DOI: 10.1039/c8dt00642c] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Coordination polymers (CPs) with bismuth(iii) as a connectivity centre have been prepared from BiX3 (X = Cl-I) and 4,4'-bipyridine (bipy) in order to implement Bi-based luminescence. The products were obtained via different synthetic routes such as solution chemistry, melt syntheses or mechanochemical reactions. Five neutral and anionic 1D-CPs are presented that show a chemical parallel to trivalent lanthanides forming isostructural or closely related 1D-CPs, of which five additional compounds are described. Bi3+ proves to be a versatile cation for luminescence resulting from energy transfer processes between a metal and a ligand in the presented CPs. Quantum chemical calculations were carried out to investigate Bi3+-participation in the luminescence processes. The calculated results allow an assignment of the bright transitions composed of mainly metal-to-ligand-charge transfer (MLCT) character. These results show that Bi3+ can form strongly luminescent coordination compounds with N-donor ligands.
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Affiliation(s)
- Jens R Sorg
- Institute of Inorganic Chemistry, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany.
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Natoli SN, Hight LM, Zeller M, McMillin DR. Photophysical Properties of Pt(II) Polypyridines with Five- versus Six-Membered Chelate Rings: Trade-Offs in Angle Strain. Inorg Chem 2018; 57:6521-6529. [PMID: 29749742 DOI: 10.1021/acs.inorgchem.8b00636] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
This report describes the synthesis and characterization of a series of eight [Pt(NNN)X]+ complexes where the tridentate NNN ligand is (2,2'-bipyrid-6-yl)(pyrid-2-yl)sulfide (btp) or methyl(2,2'-bipyrid-6-yl)(pyrid-2-yl)amine (bmap) and X is OMe, Cl, phenylethynyl (C2Ph), or cyclohexylethynyl (C2Cy). The expectation was that inserting a heteroatom into the backbone of 2,2':6',2″-terpyridine (trpy) would expand the overall intraligand bite angle, introduce ILCT character into the excited states, and improve the photophysical properties. Crystal structures of [Pt(bmap)C2Ph]+ and [Pt(btp)Cl]+ reveal that atom insertion into the trpy backbone successfully expands the bite angle of the ligand by 8-10°. However, the impact on the photophysics is minimal. Indeed, of the eight systems investigated, only the [Pt(bmap)C2Ph]+ and [Pt(btp)C2Ph]+ complexes display appreciable emission in fluid solution, and they exhibit shorter emission lifetimes than [Pt(trpy)C2Ph]+. One reason is that the bond angle preferences of platinum and the inserted heteroatom induce the six-membered rings to deviate from planarity and adopt a boat-like conformation, impairing charge delocalization within the ligand. In addition, angle strain induces the donor atoms about platinum to assume a pseudotetrahedral arrangement, which offsets any benefit due to the increase in overall bite angle by promoting deactivation via d-d excited states. The results reveal that, in order to improve the luminescence of a [Pt(NNN)X]+ system, one must take care to avoid trading one kind of angle strain for another.
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Affiliation(s)
- Sean N Natoli
- H.C. Brown Laboratory, Department of Chemistry , Purdue University , West Lafayette , Indiana 47907 , United States
| | - Lauren M Hight
- H.C. Brown Laboratory, Department of Chemistry , Purdue University , West Lafayette , Indiana 47907 , United States
| | - Matthias Zeller
- H.C. Brown Laboratory, Department of Chemistry , Purdue University , West Lafayette , Indiana 47907 , United States
| | - David R McMillin
- H.C. Brown Laboratory, Department of Chemistry , Purdue University , West Lafayette , Indiana 47907 , United States
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Affiliation(s)
- Van Ha Nguyen
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543 Singapore
| | - Balamurugan Kandasamy
- Department of Biology and Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong SAR
| | - John H. K. Yip
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543 Singapore
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Maroń A, Czerwińska K, Machura B, Raposo L, Roma-Rodrigues C, Fernandes AR, Małecki JG, Szlapa-Kula A, Kula S, Krompiec S. Spectroscopy, electrochemistry and antiproliferative properties of Au(iii), Pt(ii) and Cu(ii) complexes bearing modified 2,2′:6′,2′′-terpyridine ligands. Dalton Trans 2018; 47:6444-6463. [DOI: 10.1039/c8dt00558c] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Impact of the metal centre and the substituent incorporated into a terpy framework.
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Liu R, Shu M, Shi H, Zhu S, Hu J, Zhu H. Synthesis and photophysical properties of cyclometalated 4′-phenyl-2,2′:6′,2″-terpyridyl Pt(II) chloride complexes with different aryl substituents. INORG CHEM COMMUN 2017. [DOI: 10.1016/j.inoche.2017.04.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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9
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Maroń A, Szlapa A, Czerwińska K, Małecki JG, Krompiec S, Machura B. Solid-state and solution photoluminescence of platinum(ii) complexes with 4′-substituted terpyridine ligands – structural, spectroscopic and electrochemical studies. CrystEngComm 2016. [DOI: 10.1039/c6ce00890a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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Golkowski RT, Settineri NS, Zhao X, McMillin DR. Tuning a Lanthanide Complex To Be Responsive to the Environment in Solution. J Phys Chem A 2015; 119:11650-8. [PMID: 26571330 DOI: 10.1021/acs.jpca.5b08310] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The f-f emissions of lanthanide-ion complexes have predictable emission energies and many practical applications, but the emitting states are generally impervious to the surroundings. This investigation explores ligand- and metal-centered emission processes for a series of mixed-ligand complexes of composition M(X-T)(NO3)3, where the metal ion is europium, gadolinium, terbium, or lutetium, and X-T denotes the tridentate ligand 2,2':6',2″-terpyridine (H-T), 4'-phenyl-2,2':6',2″-terpyridine (Ph-T), or 4'-pyrrolidin-N-yl-2,2':6',2″-terpyridine (pyrr-T). The presence of the pyrrolidinyl substituent imparts intraligand charge-transfer (ILCT) character to the ligand-based excited states and reduces the energy gap between the singlet and the triplet excited states. An enhanced rate of intersystem crossing results in a lutetium complex with a relatively small fluorescence quantum yield (0.15%) and a gadolinium complex with an impressive phosphorescence yield of 9.6% in deaerated solution. The Tb(pyrr-T)(NO3)3 system is unique because the relatively low-energy triplet ILCT state equilibrates with the emissive f-f state. The result is a truly remarkable f-f emission signal that is sensitive to the polarity of the local environment as well as the presence of dioxygen.
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Affiliation(s)
- Ryan T Golkowski
- Department of Chemistry, 560 Oval Drive, Purdue University , West Lafayette, Indiana 47907-2084, United States
| | - Nicholas S Settineri
- Department of Chemistry, 560 Oval Drive, Purdue University , West Lafayette, Indiana 47907-2084, United States
| | - Xikang Zhao
- Department of Chemistry, 560 Oval Drive, Purdue University , West Lafayette, Indiana 47907-2084, United States
| | - David R McMillin
- Department of Chemistry, 560 Oval Drive, Purdue University , West Lafayette, Indiana 47907-2084, United States
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Gandioso A, Valle-Sistac J, Rodrı́guez L, Crespo M, Font-Bardı́a M. Platinum(II) Compounds Containing Cyclometalated Tridentate Ligands: Synthesis, Luminescence Studies, and a Selective Fluoro for Methoxy Substitution. Organometallics 2014. [DOI: 10.1021/om401111t] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Albert Gandioso
- Departament de Quı́mica
Inorgànica, Facultat de Quı́mica, Universitat de Barcelona, Diagonal 645, 08028 Barcelona, Spain
| | - Jennifer Valle-Sistac
- Departament de Quı́mica
Inorgànica, Facultat de Quı́mica, Universitat de Barcelona, Diagonal 645, 08028 Barcelona, Spain
| | - Laura Rodrı́guez
- Departament de Quı́mica
Inorgànica, Facultat de Quı́mica, Universitat de Barcelona, Diagonal 645, 08028 Barcelona, Spain
| | - Margarita Crespo
- Departament de Quı́mica
Inorgànica, Facultat de Quı́mica, Universitat de Barcelona, Diagonal 645, 08028 Barcelona, Spain
| | - Mercè Font-Bardı́a
- Unitat de Difracció de Raigs-X, Centres Científics
i Tecnològics de la Universitat de Barcelona (CCiTUB), Universitat de Barcelona, Solé i Sabarís, 1-3, 08028 Barcelona, Spain
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12
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Zhang B, Zhang L, Liu C, Zhu Y, Tang M, Du C, Song M. A platinum(ii) complex bearing deprotonated 2-(diphenylphosphino)benzoic acid for superior phosphorescence of monomers. Dalton Trans 2014; 43:7704-7. [DOI: 10.1039/c4dt00417e] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The (ppy)-based Pt(ii) complex (Pt-1) with 2-(diphenylphosphino)benzoic acid as an ancillary ligand displays monomeric phosphorescence with a remarkably high performance.
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Affiliation(s)
- Bin Zhang
- The College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou, P.R. China
| | - Lina Zhang
- The College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou, P.R. China
- College of Physics and Chemistry
- Henan Polytechnic University
| | - Chunmei Liu
- The College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou, P.R. China
| | - Yanyan Zhu
- The College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou, P.R. China
| | - Mingsheng Tang
- The College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou, P.R. China
| | - Chenxia Du
- The College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou, P.R. China
| | - Maoping Song
- The College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou, P.R. China
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