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Newman PD, Platts JA, Alrashidi B, Pope SJA, Kariuki BM. A noble nexus: a phosphino-phen ligand for tethering precious metals. Dalton Trans 2024; 53:15539-15550. [PMID: 39229681 DOI: 10.1039/d4dt02130d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/05/2024]
Abstract
Controlled formation of mixed-metal bimetallics was achieved via two derivatised 1,10-phenanthroline ligands bearing an imino- or amino-phosphine appendage at the 5-position. Selective coordination of the phen group to the [Re(CO)3Cl] core was achieved enabling precise construction of bimetallic complexes with a second rhenium centre or with gold. The mixed Ru/Au complex was similarly obtained with the imino-phosphine but access to the heterobimetallic iridium systems required prior formation of the P-bound gold complexes subsequent to the introduction of the [Ir(Ppy)2]+ fragment. The Re/Pd, Re/Pt, Ir/Pd and Ir/Pt compounds were prepared from the combination of κ-N'',P-Pd(Pt)Cl2 and the appropriate rhenium or iridium precursors. Spectroscopic and theoretical analyses have been employed to investigate the structural and electronic impact of the second metal.
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Affiliation(s)
- Paul D Newman
- School of Chemistry, Cardiff University, Cardiff, Wales, UK, CF10 3AT.
| | - James A Platts
- School of Chemistry, Cardiff University, Cardiff, Wales, UK, CF10 3AT.
| | - Basheer Alrashidi
- School of Chemistry, Cardiff University, Cardiff, Wales, UK, CF10 3AT.
| | - Simon J A Pope
- School of Chemistry, Cardiff University, Cardiff, Wales, UK, CF10 3AT.
| | - Benson M Kariuki
- School of Chemistry, Cardiff University, Cardiff, Wales, UK, CF10 3AT.
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2
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Cole HD, Vali A, Roque JA, Shi G, Kaur G, Hodges RO, Francés-Monerris A, Alberto ME, Cameron CG, McFarland SA. Ru(II) Phenanthroline-Based Oligothienyl Complexes as Phototherapy Agents. Inorg Chem 2023; 62:21181-21200. [PMID: 38079387 PMCID: PMC10754219 DOI: 10.1021/acs.inorgchem.3c03216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2023]
Abstract
Ru(II) polypyridyl complexes have gained widespread attention as photosensitizers for photodynamic therapy (PDT). Herein, we systematically investigate a series of the type [Ru(phen)2(IP-nT)]2+, featuring 1,10-phenanthroline (phen) coligands and imidazo[4,5-f][1,10]phenanthroline ligands tethered to n = 0-4 thiophene rings (IP-nT). The complexes were characterized and investigated for their electrochemical, spectroscopic, and (photo)biological properties. The electrochemical oxidation of the nT unit shifted by -350 mV as n = 1 → 4 (+920 mV for Ru-1T, +570 mV for Ru-4T); nT reductions were observed in complexes Ru-3T (-2530 mV) and Ru-4T (-2300 mV). Singlet oxygen quantum yields ranged from 0.53 to 0.88, with Ru-3T and Ru-4T being equally efficient (∼0.88). Time-resolved absorption spectra of Ru-0T-1T were dominated by metal-to-ligand charge-transfer (3MLCT) states (τTA = 0.40-0.85 μs), but long-lived intraligand charge-transfer (3ILCT) states were observed in Ru-2T-4T (τTA = 25-148 μs). The 3ILCT energies of Ru-3T and Ru-4T were computed to be 1.6 and 1.4 eV, respectively. The phototherapeutic efficacy against melanoma cells (SK-MEL-28) under broad-band visible light (400-700 nm) increases as n = 0 → 4: Ru-0T was inactive up to 300 μM, Ru-1T-2T were moderately active (EC50 ∼ 600 nM, PI = 200), and Ru-3T (EC50 = 57 nM, PI > 1100) and Ru-4T (EC50 = 740 pM, PI = 114,000) were the most phototoxic. The activity diminishes with longer wavelengths of light and is completely suppressed for all complexes except Ru-3T and Ru-4T in hypoxia. Ru-4T is the more potent and robust PS in 1% O2 over seven biological replicates (avg EC50 = 1.3 μM, avg PI = 985). Ru-3T exhibited hypoxic activity in five of seven replicates, underscoring the need for biological replicates in compound evaluation. Singlet oxygen sensitization is likely responsible for phototoxic effects of the compounds in normoxia, but the presence of redox-active excited states may facilitate additional photoactive pathways for complexes with three or more thienyl groups. The 3ILCT state with its extended lifetime (30-40× longer than the 3MLCT state for Ru-3T and Ru-4T) implicates its predominant role in photocytotoxicity.
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Affiliation(s)
- Houston D. Cole
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas, 76019-0065 USA
| | - Abbas Vali
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas, 76019-0065 USA
| | - John A. Roque
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas, 76019-0065 USA
- Department of Chemistry and Biochemistry, The University of North Carolina at Greensboro, Greensboro, North Carolina 27402 USA
| | - Ge Shi
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas, 76019-0065 USA
| | - Gurleen Kaur
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas, 76019-0065 USA
| | - Rachel O. Hodges
- Department of Chemistry and Biochemistry, The University of North Carolina at Greensboro, Greensboro, North Carolina 27402 USA
| | | | - Marta E. Alberto
- Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, Arcavacata di Rende, 87036 Italy
| | - Colin G. Cameron
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas, 76019-0065 USA
| | - Sherri A. McFarland
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas, 76019-0065 USA
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3
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Dai W, Yu S, Xu W, Kong C, Liu Z, Yin H, He C, Liu JJ, Cheng F. Energy transfer in metal-exchange binuclear complexes covalently linked by asymmetric ligands. Dalton Trans 2023; 52:16993-17004. [PMID: 37933477 DOI: 10.1039/d3dt03307d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2023]
Abstract
Nitrogen complexation with π-conjugated ligands is an effective strategy for synthesizing luminescent molecules. The asymmetric bridging ligands L (L1 and L2) have been designed. The terminal chelating sites of the L1 and L2 bridging ligands consisted of 2,2'-bipyridine (bpy) and 1,10-phenanthroline moieties (where L = L1 and L2; L1 = 2-(3-((4-([2,2'-bipyridin]-6-yl)benzyl)oxy)phenyl)-1H-imidazo[4,5-f][1,10]phenanthroline and L2 = 2-(3-((4-(6-phenyl-[2,2'-bipyridin]-4-yl)benzyl)oxy)phenyl)-1H-imidazo[4,5-f][1,10]phenanthroline). The full use of the synthetic strategy of the "complexes as ligands and complexes as metals" was expected to successfully design and synthesize a series of conjugated metal-exchange complexes linked by the asymmetric bridging ligands L1 and L2. These compounds included monometallic complexes Ru(L) and (L)Ru (C1, C2, C7, and C8), homometallic complexes Ru(L)Ru (C3 and C4), and heterometallic complexes Os(L)Ru and Ru(L)Os (C5, C6, C9, and C10) with Ru- or Os-based units. C3-C10 complexes exhibited various degrees of octahedral distortion around the Ru(II) or Os(II) center, which was consistent with the optimized geometry of the coordination complexes based on density functional theory calculation. These complexes exhibited intense spin-allowed ligand-centered transitions with high absorbance at around 288 nm upon absorbing visible light. Notably, all complexes exhibited spin-allowed metal-to-ligand charge transfer absorption of the Ru-based units in the 440-450 nm range. In addition, the heterometallic C5, C6, C9, and C10 complexes showed absorption of the Os-based units in the range of 565-583 nm. The intramolecular energy transfer of C3 and C5 was briefly discussed by comparing the emission intensity of monometallic C1 and C2 to that of binuclear complexes C3 and C5, respectively. The results indicated that the intramolecular energy transfer of the Ru(II)/Os(II) polypyridine complexes proceeded from the Ru(II)- to the Os(II)-based units in the heterometallic C5 and C6 complexes.
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Affiliation(s)
- Weijun Dai
- College of Chemistry and Environmental Science, Qujing Normal University, Qujing 655011, China.
| | - Shiwen Yu
- College of Chemistry and Environmental Science, Qujing Normal University, Qujing 655011, China.
| | - Wen Xu
- College of Chemistry and Environmental Science, Qujing Normal University, Qujing 655011, China.
| | - Ci Kong
- College of Chemistry and Environmental Science, Qujing Normal University, Qujing 655011, China.
| | - Zining Liu
- College of Chemistry and Environmental Science, Qujing Normal University, Qujing 655011, China.
| | - Hongju Yin
- College of Chemistry and Environmental Science, Qujing Normal University, Qujing 655011, China.
| | - Chixian He
- College of Chemistry and Environmental Science, Qujing Normal University, Qujing 655011, China.
| | - Jian-Jun Liu
- College of Chemistry and Environmental Science, Qujing Normal University, Qujing 655011, China.
| | - Feixiang Cheng
- College of Chemistry and Environmental Science, Qujing Normal University, Qujing 655011, China.
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4
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Gao Y, Zhang L, Wang Z, Lu L. Aggregation-Induced Electrochemiluminescence and Nitric Oxide Recognition by Halogen Bonding with a Ruthenium(II) Complex. Chempluschem 2023; 88:e202200421. [PMID: 36808260 DOI: 10.1002/cplu.202200421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 02/12/2023] [Accepted: 02/13/2023] [Indexed: 02/21/2023]
Abstract
In this study, a new strategy for NO detection based on the aggregation-induced electrochemical luminescence (AIECL) of a ruthenium-based complex and the halogen bonding effect was developed. First, [Ru(phen)2 (phen-Br2 )]2+ (phen : 1,10-phenanthroline, phen-Br2 : 3,8-dibromo-1,10-phenanthroline) was synthesized and exhibited aggregation-induced emission (AIE) and AIECL properties in a poor solvent (H2 O). [Ru(phen)2 (phen-Br2 )]2+ exhibited greatly enhanced AIECL properties compared to its AIE intensity. When the volume fraction of water (fw , v %) in the H2 O-acetonitrile (MeCN) system was increased from 30 to 90 %, the photoluminescence and electrochemiluminescence (ECL) intensities were three- and 800-fold that of the pure MeCN system, respectively. Dynamic light scattering and scanning electron microscopy results indicated that [Ru(phen)2 (phen-Br2 )]2+ aggregated into nanoparticles. AIECL is sensitive to NO because of its halogen bonding effect. The C-Br⋅⋅⋅N bond between [Ru(phen)2 (phen-Br2 )]2+ and NO increased the distance of complex molecules, resulting in ECL quenching. A detection limit of 2 nM was obtained with 5 orders of magnitude linear range. The combination of the AIECL system and the halogen bond effect expands the theoretical research and applications in biomolecular detection, molecular sensors, and stages of medical diagnosis.
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Affiliation(s)
- Yafang Gao
- Key Laboratory of Beijing on Regional Air Pollution Control Department of Environmental Science, Beijing University of Technology, No.100 pingleyuan, Beijing, China
| | - Linlin Zhang
- Key Laboratory of Beijing on Regional Air Pollution Control Department of Environmental Science, Beijing University of Technology, No.100 pingleyuan, Beijing, China
| | - Ziqi Wang
- Key Laboratory of Beijing on Regional Air Pollution Control Department of Environmental Science, Beijing University of Technology, No.100 pingleyuan, Beijing, China
| | - Liping Lu
- Key Laboratory of Beijing on Regional Air Pollution Control Department of Environmental Science, Beijing University of Technology, No.100 pingleyuan, Beijing, China
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5
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Lebrun G, El Mokdad B, Le Men C, Pimienta V, Coudret C, Roux C, Hébrard G, Dietrich N. Luminescent probe synthesis for oxygen visualization technique: Application to the effect of surfactant structure on oxygen mass transfer. Chem Eng Sci 2022. [DOI: 10.1016/j.ces.2022.117921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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6
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Vidal A, Calligaro R, Gasser G, Alberto R, Balducci G, Alessio E. cis-Locked Ru(II)-DMSO Precursors for the Microwave-Assisted Synthesis of Bis-Heteroleptic Polypyridyl Compounds. Inorg Chem 2021; 60:7180-7195. [PMID: 33908778 PMCID: PMC8154425 DOI: 10.1021/acs.inorgchem.1c00240] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
![]()
We describe a synthetic
strategy for the preparation of bis-heteroleptic
polypyridyl Ru(II) complexes of the type [Ru(L1)2(L2)]2+ (L1 and L2 = diimine ligands) from well-defined Ru(II) precursors.
For this purpose, a series of six neutral, anionic, and cationic cis-locked Ru(II)-DMSO complexes (2–7) of the general formula [Y] fac-[RuX(DMSO–S)3(O–O)]n (where O–O
is a symmetrical chelating anion: oxalate (ox), malonate (mal), acetylacetonate
(acac); X = DMSO–O or Cl–; n = −1/0/+1 depending on the nature and charge of X and O–O;
when present, Y = K+ or PF6–) were efficiently prepared from the well-known cis-[RuCl2(DMSO)4] (1). When treated
with diimine chelating ligands (L1 = bpy, phen, dpphen), the compounds 2–7 afforded the target [Ru(L1)2(O–O)]0/+ complex together with the undesired (and
unexpected) [Ru(L1)3]2+ species. Nevertheless,
we found that the formation of [Ru(L1)3]2+can
be minimized by carefully adjusting the reaction conditions: in particular,
high selectivity toward [Ru(L1)2(O–O)]0/+ and almost complete conversion of the precursor was obtained within
minutes, also on a 100–200 mg scale, when the reactions were
performed in absolute ethanol at 150 °C in a microwave reactor.
Depending on the nature of L1 and concentration, with the oxalate
and malonate precursors, the neutral product [Ru(L1)2(O–O)]
can precipitate spontaneously from the final mixture, in pure form
and acceptable-to-good yields. When spontaneous precipitation of the
disubstituted product does not occur, purification from [Ru(L1)3]2+ can be rather easily accomplished by column
chromatography or solvent extraction. By comparison, under the same
conditions, compound 1 is much less selective, thus demonstrating
that locking the geometry of the precursor through the introduction
of O–O in the coordination sphere of Ru is a valid strategic
approach. By virtue of its proton-sensitive nature, facile and quantitative
replacement of O–O in [Ru(L1)2(O–O)]0/+ by L2, selectively affording [Ru(L1)2(L2)]2+, was accomplished in refluxing ethanol in the presence of
a slight excess of trifluoroacetic acid or HPF6. cis-Locked Ru(II)-DMSO
complexes bearing
a symmetrical chelating anion, such as [K] fac-[RuCl(DMSO−S)3(η2-mal)] (2), are suitable
precursors for the two-step selective preparation of bis-heteroleptic
polypyridyl compounds of the type [Ru(L1)2(L2)]2+ (L1 and L2 = diimine ligands).
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Affiliation(s)
- Alessio Vidal
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, Via L. Giorgieri 1, 34127 Trieste, Italy
| | - Rudy Calligaro
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, Via L. Giorgieri 1, 34127 Trieste, Italy
| | - Gilles Gasser
- Chimie ParisTech, PSL University, CNRS, Institute of Chemistry for Life and Health Sciences, Laboratory for Inorganic Chemistry, 75005 Paris, France
| | - Roger Alberto
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Gabriele Balducci
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, Via L. Giorgieri 1, 34127 Trieste, Italy
| | - Enzo Alessio
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, Via L. Giorgieri 1, 34127 Trieste, Italy
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7
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Luis ET, Day AI, König B, Beves JE. Photophysical Activity and Host-Guest Behavior of Ruthenium Polypyridyl Catalysts Encapsulated in Cucurbit[10]uril. Inorg Chem 2020; 59:9135-9142. [PMID: 32578987 DOI: 10.1021/acs.inorgchem.0c00986] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
This work outlines a strategy to combine the use of visible light and confined spaces to form a supramolecular photocatalyst system. Polypyridyl ruthenium(II) complexes [Ru(bpy)3]2+ (bpy = 2,2'-bipyridine), [Ru(bpy)2(bpm)]2+ (bpm = 2,2'-bipyrimidine), and [Ru(bpy)2(bpz)]2+ (bpz = 2,2'-bipyrazine) are encapsulated in cucurbit[10]uril to form host-guest systems in aqueous solution. The photophysical properties of the complexes are altered by encapsulation, with improved emissive behavior for the heteroleptic complexes. Oxidative quenching of the photocatalyst's excited state via intermolecular charge transfer to methyl viologen can occur within the internal cavity, which acts to preorganize the reagents. The host-guest system containing [Ru(bpy)3]2+ can bind suitable substrates, and essential criteria for its use as a supramolecular photocatalyst are investigated.
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Affiliation(s)
- Ena T Luis
- School of Chemistry, UNSW Sydney, Sydney, Australia
| | - Anthony I Day
- School of Physical, Environmental and Mathematical Sciences, UNSW Canberra, Canberra, Australia
| | - Burkhard König
- Institute of Organic Chemistry, Faculty of Chemistry and Pharmacy, University of Regensburg, Regensburg, Germany
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8
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Lu L, Zhang L, Miao W, Wang X, Guo G. Aggregation-Induced Electrochemiluminescence of the Dichlorobis(1,10-phenanthroline)ruthenium(II) (Ru(phen)2Cl2)/Tri-n-propylamine (TPrA) System in H2O–MeCN Mixtures for Identification of Nucleic Acids. Anal Chem 2020; 92:9613-9619. [DOI: 10.1021/acs.analchem.0c00799] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Liping Lu
- College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China
| | - Linlin Zhang
- College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China
| | - Wujian Miao
- Department of Chemistry and Biochemistry, The University of Southern Mississippi, Hattiesburg, Mississippi 39406, United States
| | - Xiayan Wang
- College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China
| | - Guangsheng Guo
- College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China
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9
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Beillard A, Bantreil X, Métro TX, Martinez J, Lamaty F. Alternative Technologies That Facilitate Access to Discrete Metal Complexes. Chem Rev 2019; 119:7529-7609. [PMID: 31059243 DOI: 10.1021/acs.chemrev.8b00479] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Organometallic complexes: these two words jump to the mind of the chemist and are directly associated with their utility in catalysis or as a pharmaceutical. Nevertheless, to be able to use them, it is necessary to synthesize them, and it is not always a small matter. Typically, synthesis is via solution chemistry, using a round-bottom flask and a magnetic or mechanical stirrer. This review takes stock of alternative technologies currently available in laboratories that facilitate the synthesis of such complexes. We highlight five such technologies: mechanochemistry, also known as solvent-free chemistry, uses a mortar and pestle or a ball mill; microwave activation can drastically reduce reaction times; ultrasonic activation promotes chemical reactions because of cavitation phenomena; photochemistry, which uses light radiation to initiate reactions; and continuous flow chemistry, which is increasingly used to simplify scale-up. While facilitating the synthesis of organometallic compounds, these enabling technologies also allow access to compounds that cannot be obtained in any other way. This shows how the paradigm is changing and evolving toward new technologies, without necessarily abandoning the round-bottom flask. A bright future is ahead of the organometallic chemist, thanks to these novel technologies.
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Affiliation(s)
- Audrey Beillard
- Institut des Biomolécules Max Mousseron (IBMM), UMR 5247, CNRS, Université de Montpellier, ENSCM, Campus Triolet, Place Eugène Bataillon, 34095 Montpellier cedex 5, France
| | - Xavier Bantreil
- Institut des Biomolécules Max Mousseron (IBMM), UMR 5247, CNRS, Université de Montpellier, ENSCM, Campus Triolet, Place Eugène Bataillon, 34095 Montpellier cedex 5, France
| | - Thomas-Xavier Métro
- Institut des Biomolécules Max Mousseron (IBMM), UMR 5247, CNRS, Université de Montpellier, ENSCM, Campus Triolet, Place Eugène Bataillon, 34095 Montpellier cedex 5, France
| | - Jean Martinez
- Institut des Biomolécules Max Mousseron (IBMM), UMR 5247, CNRS, Université de Montpellier, ENSCM, Campus Triolet, Place Eugène Bataillon, 34095 Montpellier cedex 5, France
| | - Frédéric Lamaty
- Institut des Biomolécules Max Mousseron (IBMM), UMR 5247, CNRS, Université de Montpellier, ENSCM, Campus Triolet, Place Eugène Bataillon, 34095 Montpellier cedex 5, France
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10
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Kennedy ADW, de Haas N, Iranmanesh H, Luis ET, Shen C, Wang P, Price JR, Donald WA, Andréasson J, Huang F, Beves JE. Diastereoselective Control of Tetraphenylethene Reactivity by Metal Template Self-Assembly. Chemistry 2019; 25:5708-5718. [PMID: 30775812 DOI: 10.1002/chem.201806259] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 01/21/2019] [Indexed: 11/12/2022]
Abstract
The reaction of 4,4',4'',4'''-(ethene-1,1,2,2-tetrayl)tetraaniline with 2-pyridinecarboxaldehyde and iron(II) chloride resulted, after aqueous workup, in the diastereoselective formation of an [Fe2 L3 ]4+ triple-stranded helicate structure, irrespective of the stoichiometry employed. The helicate structure was characterized in solution by multinuclear NMR spectroscopy, and in the solid state by single-crystal X-ray crystallography. The reaction of iron(II) tetrafluoroborate or iron(II) bistriflimide with the tetraaniline and 2-pyridinecarboxaldehyde allowed the formation of an [Fe8 L6 ]16+ cube when the appropriate stoichiometry was used, but these structures were unstable with respect to hydrolysis. The pendant amine groups on the helicate can be functionalized by reaction with acid chlorides or anhydrides, and the resulting functionalized tetraphenylethene (TPE) units were isolated by the reaction of the helicate with tris(2-aminoethyl)amine. The emission properties of the TPE units were studied in THF/water mixtures, and they were found by dynamic light scattering to self-assemble into large (av. diameter 250 nm) structures.
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Affiliation(s)
| | | | | | - Ena T Luis
- School of Chemistry, UNSW Sydney, Sydney, NSW, 2052, Australia
| | - Chao Shen
- School of Chemistry, UNSW Sydney, Sydney, NSW, 2052, Australia
| | - Pi Wang
- School of Chemistry, UNSW Sydney, Sydney, NSW, 2052, Australia.,State Key Laboratory of Chemical Engineering, Center for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou, 310027, China
| | - Jason R Price
- ANSTO-Australian Synchrotron, 800 Blackburn Road, Clayton, Victoria, 3168, Australia
| | | | - Joakim Andréasson
- Department of Chemical and Biological Engineering, Chalmers University of Technology, 412 96, Göteborg, Sweden
| | - Feihe Huang
- State Key Laboratory of Chemical Engineering, Center for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou, 310027, China
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11
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Louis L, Alexander V, Kumar DS, Senthan SA, Viveke AA. Photoluminescence and electrochemical studies of tetranuclear ruthenium(II) polypyridyl complexes of benzimidazolyl functionalised pyrenylcalix[4]resorcinarene. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2018.10.043] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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12
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Luis ET, Iranmanesh H, Arachchige KSA, Donald WA, Quach G, Moore EG, Beves JE. Luminescent Tetrahedral Molecular Cages Containing Ruthenium(II) Chromophores. Inorg Chem 2018; 57:8476-8486. [PMID: 29969245 DOI: 10.1021/acs.inorgchem.8b01157] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
We have designed linear metalloligands which contain a central photoactive [Ru(N∧N)3]2+ unit bordered by peripheral metal binding sites. The combination of these metalloligands with Zn(II) and Fe(II) ions leads to heterometallic tetrahedral cages, which were studied by NMR spectroscopy, mass spectrometry, and photophysical methods. Like the parent metalloligands, the cages remain emissive in solution. This approach allows direct incorporation of the favorable properties of ruthenium(II) polypyridyl complexes into larger self-assembled structures.
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Affiliation(s)
- Ena T Luis
- School of Chemistry , UNSW Sydney , Sydney , 2052 Australia
| | | | | | | | - Gina Quach
- School of Chemistry and Molecular Biosciences, the University of Queensland , Brisbane , Queensland , 4072 Australia
| | - Evan G Moore
- School of Chemistry and Molecular Biosciences, the University of Queensland , Brisbane , Queensland , 4072 Australia
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13
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Iranmanesh H, Arachchige KSA, Bhadbhade M, Donald WA, Liew JY, Liu KTC, Luis ET, Moore EG, Price JR, Yan H, Yang J, Beves JE. Chiral Ruthenium(II) Complexes as Supramolecular Building Blocks for Heterometallic Self-Assembly. Inorg Chem 2016; 55:12737-12751. [DOI: 10.1021/acs.inorgchem.6b02007] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
| | | | | | | | - Jane Y. Liew
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Queensland, Australia
| | | | | | - Evan G. Moore
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Queensland, Australia
| | - Jason R. Price
- Australian Synchrotron, 800 Blackburn Road, Clayton, Victoria 3168, Australia
| | - Hong Yan
- Key State Laboratory for Coordination Chemistry, Nanjing University, Nanjing, China
| | - Jiajia Yang
- Key State Laboratory for Coordination Chemistry, Nanjing University, Nanjing, China
| | - Jonathon E. Beves
- Key State Laboratory for Coordination Chemistry, Nanjing University, Nanjing, China
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