1
|
Esteruelas MA, Moreno-Blázquez S, Oliván M, Oñate E. Competition between N, C, N-Pincer and N, N-Chelate Ligands in Platinum(II). Inorg Chem 2023; 62:10152-10170. [PMID: 37343120 PMCID: PMC11003652 DOI: 10.1021/acs.inorgchem.3c00694] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Indexed: 06/23/2023]
Abstract
Replacement of the chloride ligand of PtCl{κ3-N,C,N-[py-C6HR2-py]} (R = H (1), Me (2)) and PtCl{κ3-N,C,N-[py-O-C6H3-O-py]} (3) by hydroxido gives Pt(OH){κ3-N,C,N-[py-C6HR2-py]} (R = H (4), Me (5)) and Pt(OH){κ3-N,C,N-[py-O-C6H3-O-py]} (6). These compounds promote deprotonation of 3-(2-pyridyl)pyrazole, 3-(2-pyridyl)-5-methylpyrazole, 3-(2-pyridyl)-5-trifluoromethylpyrazole, and 2-(2-pyridyl)-3,5-bis(trifluoromethyl)pyrrole. The coordination of the anions generates square-planar derivatives, which in solution exist as a unique species or equilibria between isomers. Reactions of 4 and 5 with 3-(2-pyridyl)pyrazole and 3-(2-pyridyl)-5-methylpyrazole provide Pt{κ3-N,C,N-[py-C6HR2-py]}{κ1-N1-[R'pz-py]} (R = H; R' = H (7), Me (8). R = Me; R' = H (9), Me (10)), displaying κ1-N1-pyridylpyrazolate coordination. A 5-trifluoromethyl substituent causes N1-to-N2 slide. Thus, 3-(2-pyridyl)-5-trifluoromethylpyrazole affords equilibria between Pt{κ3-N,C,N-[py-C6HR2-py]}{κ1-N1-[CF3pz-py]} (R = H (11a), Me (12a)) and Pt{κ3-N,C,N-[py-C6HR2-py]}{κ1-N2-[CF3pz-py]} (R = H (11b), Me (12b)). 1,3-Bis(2-pyridyloxy)phenyl allows the chelating coordination of the incoming anions. Deprotonations of 3-(2-pyridyl)pyrazole and its substituted 5-methyl counterpart promoted by 6 lead to equilibria between Pt{κ3-N,C,N-[pyO-C6H3-Opy]}{κ1-N1-[R'pz-py]} (R' = H (13a), Me (14a)) with a κ-N1-pyridylpyrazolate anion, keeping the pincer coordination of the di(pyridyloxy)aryl ligand, and Pt{κ2-N,C-[pyO-C6H3(Opy)]}{κ2-N,N-[R'pz-py]} (R' = H (13c), Me (14c)) with two chelates. Under the same conditions, 3-(2-pyridyl)-5-trifluoromethylpyrazole generates the three possible isomers: Pt{κ3-N,C,N-[pyO-C6H3-Opy]}{κ1-N1-[CF3pz-py]} (15a), Pt{κ3-N,C,N-[pyO-C6H3-Opy]}{κ1-N2-[CF3pz-py]} (15b), and Pt{κ2-N,C-[pyO-C6H3(Opy)]}{κ2-N,N-[CF3pz-py]} (15c). The N1-pyrazolate atom produces a remote stabilizing effect on the chelating form, pyridylpyrazolates being better chelate ligands than pyridylpyrrolates. Accordingly, reactions of 4-6 with 2-(2-pyridyl)-3,5-bis(trifluoromethyl)pyrrole yield Pt{κ3-N,C,N-[py-C6HR2-py]}{κ1-N1-[(CF3)2C4(py)HN]} (R = H (16), Me (17)) or Pt{κ3-N,C,N-[pyO-C6H3-Opy]}{κ1-N1-[(CF3)2C4(py)HN]} (18), displaying κ1-N1-pyrrolate coordination. Complexes 7-10 are efficient green phosphorescent emitters (488-576 nm). In poly(methyl methacrylate) (PMMA) films and in dichloromethane, they experience self-quenching, due to molecular stacking. Aggregation occurs through aromatic π-π interactions, reinforced by weak platinum-platinum interactions.
Collapse
Affiliation(s)
- Miguel A. Esteruelas
- Departamento de Química
Inorgánica, Instituto de Síntesis Química y Catálisis
Homogénea (ISQCH), Centro de Innovación en Química
Avanzada (ORFEO-CINQA), Universidad de Zaragoza—CSIC, 50009 Zaragoza, Spain
| | - Sonia Moreno-Blázquez
- Departamento de Química
Inorgánica, Instituto de Síntesis Química y Catálisis
Homogénea (ISQCH), Centro de Innovación en Química
Avanzada (ORFEO-CINQA), Universidad de Zaragoza—CSIC, 50009 Zaragoza, Spain
| | - Montserrat Oliván
- Departamento de Química
Inorgánica, Instituto de Síntesis Química y Catálisis
Homogénea (ISQCH), Centro de Innovación en Química
Avanzada (ORFEO-CINQA), Universidad de Zaragoza—CSIC, 50009 Zaragoza, Spain
| | - Enrique Oñate
- Departamento de Química
Inorgánica, Instituto de Síntesis Química y Catálisis
Homogénea (ISQCH), Centro de Innovación en Química
Avanzada (ORFEO-CINQA), Universidad de Zaragoza—CSIC, 50009 Zaragoza, Spain
| |
Collapse
|
2
|
pH-guided fluorescent sensing probe for the discriminative detection of Cl− and Br− in human serum. Anal Chim Acta 2022; 1210:339879. [DOI: 10.1016/j.aca.2022.339879] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 03/21/2022] [Accepted: 04/24/2022] [Indexed: 11/22/2022]
|
3
|
Valdes-García J, Viviano-Posadas AO, Rivera-Chávez J, Ramírez-Apan T, Martínez-Vargas S, Aguirre-Hernández E, German-Acacio JM, Morales-Morales D, Dorazco-González A. Crystal structures and study of interaction mode of bis-benzimidazole-benzene derivatives with DNA. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131582] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
|
4
|
Group 10 metal-cyanide scaffolds in complexes and extended frameworks: Properties and applications. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2021.214310] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
|
5
|
Urgoitia G, Herrero MT, Churruca F, Conde N, SanMartin R. Direct Arylation in the Presence of Palladium Pincer Complexes. Molecules 2021; 26:4385. [PMID: 34299661 PMCID: PMC8305722 DOI: 10.3390/molecules26144385] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 07/14/2021] [Accepted: 07/16/2021] [Indexed: 12/02/2022] Open
Abstract
Direct arylation is an atom-economical alternative to more established procedures such as Stille, Suzuki or Negishi arylation reactions. In comparison with other palladium sources and ligands, the use of palladium pincer complexes as catalysts or pre-catalysts for direct arylation has resulted in improved efficiency, higher reaction yields, and advantageous reaction conditions. In addition to a revision of the literature concerning intra- and intermolecular direct arylation reactions performed in the presence of palladium pincer complexes, the role of these remarkably active catalysts will also be discussed.
Collapse
Affiliation(s)
| | | | | | | | - Raul SanMartin
- Department of Organic and Inorganic Chemistry, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), 48940 Leioa, Spain; (G.U.); (M.T.H.); (F.C.); (N.C.)
| |
Collapse
|
6
|
Kuno A, Hirata G, Tanaka H, Kobayashi Y, Yasuda N, Maeda H. Dipyrrolyldiketone Pt II Complexes: Ion-Pairing π-Electronic Systems with Various Anion-Binding Modes. Chemistry 2021; 27:10068-10076. [PMID: 34002907 DOI: 10.1002/chem.202100855] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Indexed: 11/10/2022]
Abstract
A variety of π-electronic ion-pairing assemblies can be constructed by combining anion complexes of π-electronic systems and countercations. In this study, a series of anion-responsive π-electronic molecules, dipyrrolyldiketone PtII complexes containing a phenylpyridine ligand, were synthesized. The resulting PtII complexes exhibited phosphorescence emission, with higher emission quantum yields (0.30-0.42) and microsecond-order lifetimes, and solution-state anion binding, as revealed by our spectroscopic analyses. These PtII complexes displayed solid-state ion-pairing assemblies, exhibiting various anion-binding modes, which derived from pyrrole-inverted and pyrrole-non-inverted conformations, and packing structures, with the contribution of charge-by-charge assemblies, which were dependent on the substituents in the PtII complexes and the geometries and electronic states of their countercations.
Collapse
Affiliation(s)
- Atsuko Kuno
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University, Kusatsu, 525-8577, Japan
| | - Goki Hirata
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University, Kusatsu, 525-8577, Japan
| | - Hiroki Tanaka
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University, Kusatsu, 525-8577, Japan
| | - Yoichi Kobayashi
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University, Kusatsu, 525-8577, Japan
| | - Nobuhiro Yasuda
- Diffraction and Scattering Division, Japan Synchrotron Radiation Research Institute, Sayo, 679-5198, Japan
| | - Hiromitsu Maeda
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University, Kusatsu, 525-8577, Japan
| |
Collapse
|
7
|
Karasik AA, Heinicke JW, Balueva AS, Thede G, Jones PG, Sinyashin OG. Pt‐ and Pd‐Complexes with Acyclic and Heterocyclic
P
‐Hydroxyaryl‐Substituted
N
‐Phosphanylmethyl Amino Acids RP(CH
2
NHR')
2
and (RPCH
2
NR'CH
2
)
2
– Evaluation of (P
^
O)M Chelate Formation. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000551] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Andrey A. Karasik
- A.E. Arbuzov Institute of Organic and Physical Chemistry of Kazan Scientific Center of Russian Academy of Science Arbuzov Str. 8 420088 Kazan Russia
| | - Joachim W. Heinicke
- Institut für Biochemie Universität Greifswald Felix‐Hausdorff‐Str. 4 17487 Greifswald Germany
| | - Anna S. Balueva
- A.E. Arbuzov Institute of Organic and Physical Chemistry of Kazan Scientific Center of Russian Academy of Science Arbuzov Str. 8 420088 Kazan Russia
| | - Gabriele Thede
- Institut für Biochemie Universität Greifswald Felix‐Hausdorff‐Str. 4 17487 Greifswald Germany
| | - Peter G. Jones
- Institut für Anorganische und Analytische Chemie Technische Universität Braunschweig Hagenring 30 38106 Braunschweig Germany
| | - Oleg G. Sinyashin
- A.E. Arbuzov Institute of Organic and Physical Chemistry of Kazan Scientific Center of Russian Academy of Science Arbuzov Str. 8 420088 Kazan Russia
| |
Collapse
|
8
|
Valdes-García J, Rosales-Vázquez LD, Bazany-Rodríguez IJ, Dorazco-González A. Recent Advances in Luminescent Recognition and Chemosensing of Iodide in Water. Chem Asian J 2020; 15:2925-2938. [PMID: 32755069 DOI: 10.1002/asia.202000758] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 07/31/2020] [Indexed: 12/12/2022]
Abstract
This Minireview covers the latest developments of chemosensors based on transition-metal receptors and organic fluorophores with specific binding sites for the luminescent detection and recognition of iodide in aqueous media and real samples. In all selected examples within the last decade (made-post 2010), the iodide sensing and recognition is probed by monitoring real-time changes of the fluorescence or phosphorescence properties of the chemosensors. This review highlights effective strategies to iodide sensing from a structural approach where the iodide recognition/sensing process, through supramolecular interactions as coordination bonds, hydrogen bonds, halogen bonds and electrostatic interactions, is transduced into an optical change easily measurable. The selective iodide sensing is an active field of research with global interest due to the importance of iodide in biological, medicinal, industrial, environmental and chemical processes.
Collapse
Affiliation(s)
- Josue Valdes-García
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, México, 04510, CDMX., México
| | - Luis D Rosales-Vázquez
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, México, 04510, CDMX., México
| | - Iván J Bazany-Rodríguez
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, México, 04510, CDMX., México
| | - Alejandro Dorazco-González
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, México, 04510, CDMX., México
| |
Collapse
|
9
|
Qiu Y, Feng Y, Zhao Q, Wang H, Guo Y, Qiu D. White light emission from a green cyclometalated platinum(ii) terpyridylphenylacetylide upon titration with Zn(ii) and Eu(iii ). Dalton Trans 2020; 49:11163-11169. [PMID: 32747881 DOI: 10.1039/d0dt02336a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The cyclometalated Pt(ii) acetylide derivative with a 1,3-bis(N-octyl-benzimidazol-2-yl)benzene (N^C^N) ligand and a free terpyridine (TPY) receptor has been successfully synthesized and characterized. X-ray crystallography shows its inefficient conjugation degree between the [(N^C^N)Pt] and TPY planes. This bifunctional complex shows an enhanced 1MLCT/LLCT absorption band (ε = 3.30 × 104 dm3 mol-1 cm-1) centered at λmax = 365 nm, and the well-resolved vibronic-structured 3MLCT/LLCT emission bands (Φ = 0.08, τ = 3.43 μs) in the range of ca. 475-700 nm. Consecutive titrations show that added Zn2+ and Eu(HFA)3 bond to its free TPY receptor with 1 : 2 and 1 : 1 stoichiometry to form the heterotrinuclear Pt-Zn-Pt (Ka = 3.48 × 104 mol-1 dm3) and heterodinuclear Pt-Eu (Ka = 1.73 × 104 mol-1 dm3) complexes, respectively. A sensitizing effect of Zn2+ on the TPY unit, and the incomplete d → f energy transfer from the [(N^C^N)Pt(ii)] antenna donor to the Eu(iii) center with maximum efficiency of 51.8% are observed. Using an in situ mixed titration strategy, the R/G/B emission triads consisted of red [(TPY)Eu(HFA)3] and green [(N^C^N)Pt(ii)] dual phosphorescence and blue [(TPY)Zn(TPY)] fluorescence, which can be well balanced to realize the white-light-emission with CIE coordinates (x = 0.36, y = 0.36) by precisely controlling the molar ratio (9 : 1 : 2) of the parent complexes, Eu(HFA)3 and Zn(ClO4)2.
Collapse
Affiliation(s)
- Yuqing Qiu
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou City, Henan Province 450001, P. R. China
| | - Yuquan Feng
- College of Chemistry and Pharmacy Engineering, Nanyang Normal University, Nanyang City, Henan Province 473061, P. R. China.
| | - Qian Zhao
- College of Chemistry and Pharmacy Engineering, Nanyang Normal University, Nanyang City, Henan Province 473061, P. R. China.
| | - Hongwei Wang
- College of Chemistry and Pharmacy Engineering, Nanyang Normal University, Nanyang City, Henan Province 473061, P. R. China.
| | - Yingchen Guo
- College of Chemistry and Pharmacy Engineering, Nanyang Normal University, Nanyang City, Henan Province 473061, P. R. China.
| | - Dongfang Qiu
- College of Chemistry and Pharmacy Engineering, Nanyang Normal University, Nanyang City, Henan Province 473061, P. R. China.
| |
Collapse
|
10
|
Ong WSY, Smaldone RA, Dodani SC. A neutral porous organic polymer host for the recognition of anionic dyes in water. Chem Sci 2020; 11:7716-7721. [PMID: 34094147 PMCID: PMC8159435 DOI: 10.1039/d0sc02941f] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Accepted: 06/19/2020] [Indexed: 11/21/2022] Open
Abstract
Neutral hosts for the recognition of anionic guests in water remain underdeveloped due to the inherent thermodynamic barrier for desolvation. To address this challenge, we have repurposed crosslinked porous organic polymers (POPs) as hosts. This polymer architecture affords a hydrophobic environment with a densely packed array of urea hydrogen bond donors to cooperatively promote anion desolvation and recognition in water. Using the principles of supramolecular design, we demonstrate through adsorption assays that the resulting Urea-POP-1 can recognize structurally different dyes containing phosphonate, sulfonate, and carboxylate anions in water. Moreover, when compared to Methyl-POP-1, a control POP lacking hydrogen bond donors, we find that the driving force for desolvation and adsorption of each dye is achieved through hydrophobic interactions with the POP backbone and, more importantly, cooperative hydrogen bonding interactions with the urea sidechains. This starting point sets the stage to exploit the modularity of our design to build a family of neutral polymer hosts with tunable pore sizes and anion preferences for fundamental investigations and targeted applications.
Collapse
Affiliation(s)
- Whitney S Y Ong
- Department of Chemistry and Biochemistry, The University of Texas at Dallas 800 West Campbell Road Richardson TX 75080 USA
| | - Ronald A Smaldone
- Department of Chemistry and Biochemistry, The University of Texas at Dallas 800 West Campbell Road Richardson TX 75080 USA
| | - Sheel C Dodani
- Department of Chemistry and Biochemistry, The University of Texas at Dallas 800 West Campbell Road Richardson TX 75080 USA
| |
Collapse
|
11
|
Bazany-Rodríguez IJ, Salomón-Flores MK, Bautista-Renedo JM, González-Rivas N, Dorazco-González A. Chemosensing of Guanosine Triphosphate Based on a Fluorescent Dinuclear Zn(II)-Dipicolylamine Complex in Water. Inorg Chem 2020; 59:7739-7751. [PMID: 32391691 DOI: 10.1021/acs.inorgchem.0c00777] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Guanosine triphosphate (GTP) is a key biomarker of multiple cellular processes and human diseases. The new fluorescent dinuclear complex [Zn2(L)(S)][OTf]4, 1 (asymmetric ligand, L = 5,8-Bis{[bis(2-pyridylmethyl)amino] methyl}quinoline, S = solvent, and OTf = triflate anion) was synthesized and studied in-depth as a chemosensor for nucleoside polyphosphates and inorganic anions in pure water. Additions at neutral pH of nucleoside triphosphates, guanosine diphosphate, guanosine monophosphate, and pyrophosphate (PPi) to 1 quench its blue emission (λem = 410 nm) with a pronounced selectivity toward GTP over other anions, including adenosine triphosphate (ATP), uridine triphosphate (UTP), and cytidine triphosphate (CTP). The efficient quenching response by the addition of GTP was observed in the presence of coexisting species in blood plasma and urine with a detection limit of 9.2 μmol L-1. GTP also shows much tighter binding to the receptor 1 on a submicromolar level. On the basis of multiple spectroscopic tools (1H, 31P NMR, UV-vis, and fluorescence) and DFT calculations, the binding mode is proposed through three-point recognition involving the simultaneous coordination of the N7 atom of the guanosine motif and two phosphate groups to the two Zn(II) atoms. Spectroscopic studies, MS-ESI, and DFT suggested that GTP bound to 1 in 1:1 and 2:2 models with high overall binding constants of log β1 (1:1) = 6.05 ± 0.01 and log β2 = 10.91 ± 0.03, respectively. The optical change and selectivity are attributed to the efficient binding of GTP to 1 by the combination of a strong electrostatic contribution and synergic effects of coordination bonds. Such GTP selectivity of an asymmetric metal-based receptor in water is still rare.
Collapse
Affiliation(s)
- Iván J Bazany-Rodríguez
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria México, 04510, Distrito Federal de México, México
| | - María K Salomón-Flores
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria México, 04510, Distrito Federal de México, México
| | - Joanatan M Bautista-Renedo
- Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM, km 14.5 Carrera Toluca-Atlacomulco, Campus UAEMex "El Rosedal" San Cayetano-Toluca, 50200 Toluca de Lerdo, Estado de México, México
| | - Nelly González-Rivas
- Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM, km 14.5 Carrera Toluca-Atlacomulco, Campus UAEMex "El Rosedal" San Cayetano-Toluca, 50200 Toluca de Lerdo, Estado de México, México
| | - Alejandro Dorazco-González
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria México, 04510, Distrito Federal de México, México
| |
Collapse
|
12
|
Rosales-Vázquez LD, Martínez-Otero D, Sánchez-Mendieta V, Jaramillo-García J, Téllez-López A, Escudero R, Morales F, Valdes-García J, Dorazco-González A. Dinuclear complexes of Mn, Co, Zn and Cd assembled with 1,4-cyclohexanedicarboxylate: synthesis, crystal structures and acetonitrile fluorescence sensing properties. NEW J CHEM 2020. [DOI: 10.1039/d0nj01410a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Selective and reversible fluorescence sensing of acetonitrile in water by [Cd2(H2O)2(chdc)2(bipy)2]·H2O with a detection limit of 1.1 × 10−6 M.
Collapse
Affiliation(s)
- Luis D. Rosales-Vázquez
- Instituto de Química
- Universidad Nacional Autónoma de México
- Circuito Exterior
- Ciudad Universitaria
- Ciudad de México
| | | | | | | | | | - Roberto Escudero
- Instituto de Investigaciones en Materiales
- Universidad Nacional Autónoma de México
- Ciudad de México
- Mexico
| | - Francisco Morales
- Instituto de Investigaciones en Materiales
- Universidad Nacional Autónoma de México
- Ciudad de México
- Mexico
| | - Josue Valdes-García
- Instituto de Química
- Universidad Nacional Autónoma de México
- Circuito Exterior
- Ciudad Universitaria
- Ciudad de México
| | - Alejandro Dorazco-González
- Instituto de Química
- Universidad Nacional Autónoma de México
- Circuito Exterior
- Ciudad Universitaria
- Ciudad de México
| |
Collapse
|
13
|
Mohammadnezhad G, Abad S, Farrokhpour H. Theoretical Evaluation of One-Pot Synthesis of Aliphatic PNP Pincer Ligands. J STRUCT CHEM+ 2019. [DOI: 10.1134/s0022476619110052] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
14
|
Shafikov MZ, Daniels R, Kozhevnikov VN. Unusually Fast Phosphorescence from Ir(III) Complexes via Dinuclear Molecular Design. J Phys Chem Lett 2019; 10:7015-7024. [PMID: 31638816 DOI: 10.1021/acs.jpclett.9b03002] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The design and detailed photophysical study of two novel Ir(III) complexes featuring mono- and dinuclear design are presented. Emission quantum yield and decay times in solution are ΦPL = 90% and τ(300 K) = 1.16 μs for the mononuclear complex 5, and ΦPL = 95% and τ(300 K) = 0.44 μs for the dinuclear complex 6. These data indicate an almost 3-fold increase in the phosphorescence rate for dinuclear complex 6 compared to 5. Zero-field splitting (ZFS) of the T1 state also increases from ZFS = 65 cm-1 for the mononuclear complex to ZFS = 205 cm-1 for the dinuclear complex and is accompanied by a drastic shortening of the individual decay times of T1 substates. With the help of TD-DFT calculations, we rationalize that the drastic changes in the T1 state properties in the dinuclear complex originate from an increased number of excited states available for direct spin-orbit coupling (SOC) routes as a result of electronic coupling of Ir-Cl antibonding molecular orbitals of the two coordination sites.
Collapse
Affiliation(s)
- Marsel Z Shafikov
- Institut für Physikalische und Theoretische Chemie , Universität Regensburg , Universitätsstrasse 31 , Regensburg D-93053 , Germany
- Ural Federal University , Mira 19 , Ekaterinburg 620002 , Russia
| | - Ruth Daniels
- Department of Applied Sciences , Northumbria University , Newcastle upon Tyne NE1 8ST , United Kingdom
| | - Valery N Kozhevnikov
- Department of Applied Sciences , Northumbria University , Newcastle upon Tyne NE1 8ST , United Kingdom
| |
Collapse
|
15
|
Bagwill CS, Wireduaah S, Cusworth B, Korba J, Kirkpatrick CC, Lewis M, Stalcup AM. Use of HPLC retention to investigate new P descriptors designed to represent ion-π interactions. J LIQ CHROMATOGR R T 2019. [DOI: 10.1080/10826076.2019.1667822] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
| | | | - Brian Cusworth
- School of Medicine, Washington University, St. Louis, MO, USA
| | | | | | - Michael Lewis
- Department of Chemistry, Saint Louis University, St. Louis, MO, USA
| | - Apryll M. Stalcup
- School of Chemical Sciences, Dublin City University, Glasnevin, Dublin 9, Ireland
| |
Collapse
|
16
|
Amarne H, Helal W, Wang S. Synthesis, structure and density functional theory calculations of a novel photoluminescent trisarylborane-bismuth(III) complex. LUMINESCENCE 2019; 34:731-738. [PMID: 31251465 DOI: 10.1002/bio.3667] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Revised: 05/12/2019] [Accepted: 05/28/2019] [Indexed: 11/09/2022]
Abstract
A novel trisarylborane-Bi(III) complex, tris(4-(dimesitylboryl)phenyl)bismuthine [Bi(PhBMes2 )3 ], in which (Ph = phenyl, and Mes = mesityl), was synthesized via the reaction of bismuth (III) chloride (BiCl3 ) with three equivalents of lithiated (4-bromophenyl)- dimesitylborane [BrPhBMes2 ]. The new trisarylbismuthine was characterized by elemental analysis, ultraviolet-visible (UV-vis) spectroscopy, and NMR (1 H and 13 C) spectroscopy. The molecular structure of Bi(PhBMes2 )3 in the solid state was determined using single-crystal X-ray diffraction analysis, which showed short intermolecular C-H···H-C contact. The complex is a fluorescent emitter (λmax = 395 nm) at room temperature and a phosphorescent emitter (λmax = 423 nm) at 77 K, which displayed a long lifetime of 495 ms. The UV-vis transitions were investigated using density function theory (DFT) and time-dependent (TD)-DFT calculations. Natural bond orbital analysis showed that the bismuth (III) center was mainly Lewis acidic in nature.
Collapse
Affiliation(s)
- Hazem Amarne
- Department of Chemistry, The University of Jordan, Amman, Jordan
| | - Wissam Helal
- Department of Chemistry, The University of Jordan, Amman, Jordan
| | - Suning Wang
- Department of Chemistry, Queen's University, Kingston, Ontario, Canada
| |
Collapse
|
17
|
Huang J, Liu Z, Chen H, Zhang H, Zhang H, Liu C, Gao Q, Du C, Zhang B. Formation of Hetero-binuclear Pt(II)-M(II) Complexes Based on (2-(1 H-Tetrazol-5-yl)phenyl)diphenylphosphine Oxide for Superior Phosphorescence of Monomers. Inorg Chem 2019; 58:4253-4261. [PMID: 30892024 DOI: 10.1021/acs.inorgchem.8b03326] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Novel hetero-binuclear platinum complexes (HBC-Pt(II)-M(II), M = Ca(II), Mg(II), Zn(II), and Cd(II)) have been synthesized by the reaction of the corresponding precursors [Pt(ppy)(μ-Cl)]2 with (2-(1 H-tetrazol-5-yl)phenyl)diphenylphosphine oxide (TTPPO). The X-ray structures of the complexes show that two ancillary ligands TTPPO in the square-planar Pt(II) moiety act as a quadridentate chelating agent for the other metal center, eventually forming a distorted octahedral configuration. There are no significant π-π interactions and Pt-M metallophilic interactions in the crystal lattice, due to the steric hindrances associated with the rigid octahedral structure together with the bulky TTPPO. Consequently, HBC-Pt-M complexes show monomer emission characteristics with quantum yields up to 59% in powder, suggesting their great potential for practical applications. DFT and TD-DFT calculations on HBC-Pt-Zn reveal that the phosphorescence can be ascribed to intraligand charge transfer (3ILCT) combined with some metal-to-ligand charge transfer (3MLCT) in the Pt(ppy) moiety, which is consistent with the observations from the photophysical investigations.
Collapse
Affiliation(s)
- Juan Huang
- College of Chemistry and Molecular Engineering , Zhengzhou University , Zhengzhou 450001 , China
| | - Zhuo Liu
- College of Chemistry and Molecular Engineering , Zhengzhou University , Zhengzhou 450001 , China
| | - Hui Chen
- Institute of Chemistry , Henan Academy of Sciences , Zhengzhou 450002 , China
| | - Hailing Zhang
- College of Chemistry and Molecular Engineering , Zhengzhou University , Zhengzhou 450001 , China
| | - Han Zhang
- College of Chemistry and Molecular Engineering , Zhengzhou University , Zhengzhou 450001 , China
| | - Chunmei Liu
- College of Chemistry and Molecular Engineering , Zhengzhou University , Zhengzhou 450001 , China
| | - Qin Gao
- College of Chemistry and Molecular Engineering , Zhengzhou University , Zhengzhou 450001 , China
| | - Chenxia Du
- College of Chemistry and Molecular Engineering , Zhengzhou University , Zhengzhou 450001 , China
| | - Bin Zhang
- College of Chemistry and Molecular Engineering , Zhengzhou University , Zhengzhou 450001 , China
| |
Collapse
|
18
|
Rani V, Singh HB, Butcher RJ. Synthesis and structure of an aryl-selenenium(II) cation, [C 34H 41N 4Se +] 2[Hg(SeCN) 4] 2-, based on a 5- tert-butyl-1,3-bis-(1-pentyl-1 H-benzimidazol-2-yl)benzene scaffold. Acta Crystallogr E Crystallogr Commun 2018; 74:786-790. [PMID: 29951230 PMCID: PMC6002820 DOI: 10.1107/s2056989018006394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Accepted: 04/25/2018] [Indexed: 11/23/2022]
Abstract
In the title salt, bis-{[5-tert-butyl-1,3-bis-(1-pentyl-1H-benzimidazol-2-yl)benzene]selenium} tetra-kis-(seleno-cyanato)-mercury, (C34H41N4Se)2[Hg(SeCN)4], the aryl-selenenium cations, [C34H41N4Se]+, are linked through [Hg(SeCN)4]2- anions by C-H⋯N hydrogen bonds. In the cation, the geometry around the Se atom in the 5-tert-butyl-1,3-bis-(1-pentyl-1H-benzimidazol-2-yl)benzene scaffold is T-shaped, resulting from the coordination of Se by the C atom of the central aromatic ring and the N atoms of both of the benzimidazole moieties. The trans Se-N bond lengths are almost equal [2.087 (3) and 2.099 (3) Å] and the Se-C bond length is 1.886 (3) Å. The N-Se-N angle is 159.29 (11)°. The geometry around the HgII atom in the [Hg(SeCN)4]2- anion is distorted tetra-hedral, with Se-Hg-Se angles ranging from 88.78 (3) to 126.64 (2)°. In [Hg(SeCN)4]2-, the Hg-Se bonds are unsymmetrical [2.5972 (4) and 2.7242 (5) Å]. One of the pentyl substituents is disordered over two equivalent conformations, with occupancies of 0.852 (8) and 0.148 (8).
Collapse
Affiliation(s)
- Varsha Rani
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India
| | - Harkesh B. Singh
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India
| | - Ray J. Butcher
- Department of Chemistry, Howard University, 525 College Street NW, Washington, DC 20059, USA
| |
Collapse
|
19
|
Rani V, Singh HB, Butcher RJ. Protic and substituted NCN palladium(II) pincer complexes with 1,3-bis(benzimidazol-2′-yl)-2-bromobenzenes: Structure and catalysis. J Organomet Chem 2018. [DOI: 10.1016/j.jorganchem.2018.01.027] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
|
20
|
Salomón-Flores MK, Bazany-Rodríguez IJ, Martínez-Otero D, García-Eleno MA, Guerra-García JJ, Morales-Morales D, Dorazco-González A. Bifunctional colorimetric chemosensing of fluoride and cyanide ions by nickel-POCOP pincer receptors. Dalton Trans 2018; 46:4950-4959. [PMID: 28272613 DOI: 10.1039/c6dt04897h] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Three Ni(ii)-POCOP pincer complexes [NiCl{C6H2-4-OH-2,6-(OPPh2)2}], 1; [NiCl{C6H2-4-OH-2,6-(OPtBu2)2}], 2 and [NiCl{C6H2-4-OH-2,6-(OPiPr2)2}], 3 were studied as bifunctional molecular sensors for inorganic anions and acetate. In CH3CN, fluoride generates a bathochromic shift with a colorimetric change for 1-3 with a simultaneous fluorescence turn on, this optical effect is based on deprotonation of the para-hydroxy group of the POCOP ligand. On the other hand, in a neutral aqueous solution of 80 vol% CH3CN, additions of cyanide produce a distinct change of color by forming very stable complexes with the nickel-based receptors 1-3 with log Ka in the range of 4.38-5.03 M-1 and pronounced selectivity over other common anions such as iodide, phosphate, and acetate. Additionally, bromide shows a modest spectral change and affinity, but lower than those observed for cyanide. On the basis of 1H NMR experiments, UV-vis titrations, ESI-MS experiments, and the crystal structure of the neutral bromo complex of 1, it is proposed that the colorimetric change involves an exchange of chloride by CN- on the Ni(ii) atom. The Ni(ii)-based sensor 1 allows the fluorescent selective detection of fluoride with a limit of 5.66 μmol L-1 and colorimetric sensing of cyanide in aqueous medium in the micromolar concentration range.
Collapse
Affiliation(s)
- María K Salomón-Flores
- Centro Conjunto de Investigación en Química Sustentable, UAEM-UNAM, C. P. 50200, Toluca, Estado de México, México, Instituto de Química, Universidad Nacional Autónoma de México
| | | | | | | | | | | | | |
Collapse
|
21
|
Aletti AB, Gillen DM, Gunnlaugsson T. Luminescent/colorimetric probes and (chemo-) sensors for detecting anions based on transition and lanthanide ion receptor/binding complexes. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2017.06.020] [Citation(s) in RCA: 75] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
|
22
|
Rani V, Singh HB, Butcher RJ. Cationic NCN Palladium(II) Pincer Complexes of 5-tert-Butyl-1,3-bis(N-substituted benzimidazol-2′-yl)benzenes: Synthesis, Structure, and Pd···Pd Metallophilic Interaction. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00620] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Varsha Rani
- Department
of Chemistry, Indian Institute of Technology Bombay, Mumbai 400076, India
| | - Harkesh B. Singh
- Department
of Chemistry, Indian Institute of Technology Bombay, Mumbai 400076, India
| | - Ray J. Butcher
- Department
of Chemistry, Howard University, 525 College Street NW, Washington, D.C. 20059, United States
| |
Collapse
|
23
|
Rani V, Singh HB, Butcher RJ. Structure of 2,2'-(5- tert-butyl-1,3-phenyl-ene)bis-(1-pentyl-1 H-benzimidazol-3-ium) tetra-chlorido-mercurate(II). Acta Crystallogr E Crystallogr Commun 2017; 73:560-563. [PMID: 28435721 PMCID: PMC5382622 DOI: 10.1107/s2056989017004303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Accepted: 03/17/2017] [Indexed: 11/24/2022]
Abstract
In the title salt, (C34H44N4)[HgCl4], the [C34H44N4]2+ cations and [HgCl4]2- anions are linked by N-H⋯Cl hydrogen bonds. One of the two n-pentyl side chains was refined as disordered over two sets of sites, with occupancies of 0.733 (18) and 0.267 (18). The geometry around the HgII atom in the [HgCl4]2- anion is distorted tetra-hedral, with bond angles ranging from 98.16 (3) to 120.68 (3)°. In the [HgCl4]2- anion, there are two short Hg-Cl bonds [2.4120 (9) and 2.4171 (11) Å], one inter-mediate Hg-Cl bond [2.4716 (12) Å] and one long Hg-Cl bond [2.6579 (13) Å] for the Cl atom involved in a trifurcated hydrogen bond as an acceptor, including two N-H⋯Cl⋯H-N interactions as well as one C-H⋯Cl inter-action. There are several C-H⋯Cl inter-actions, with C⋯Cl distances ranging from 3.492 (3) to 3.796 (3) Å. These link the cations and anions into a zigzag chain along the c-axis direction. In addition, there are Cl⋯Cl halogen bonds, as well as π-π inter-actions, with centroid-to-centroid distances of 3.4765 (18) Å, which link one of the two benzimidazole moieties into dimeric units.
Collapse
Affiliation(s)
- Varsha Rani
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India
| | - Harkesh B. Singh
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India
| | - Ray J. Butcher
- Department of Chemistry, Howard University, 525 College Street NW, Washington, DC 20059, USA
| |
Collapse
|
24
|
Rani V, Singh HB, Butcher RJ. Synthesis and structure of the mercury chloride complex of 2,2'-(2-bromo-5- tert-butyl-1,3-phenyl-ene)bis-(1-methyl-1 H-benzimidazole). Acta Crystallogr E Crystallogr Commun 2017; 73:341-344. [PMID: 28316804 PMCID: PMC5347049 DOI: 10.1107/s2056989017001888] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Accepted: 02/02/2017] [Indexed: 11/29/2022]
Abstract
In the title mercury complex, catena-poly[[di-chlorido-mercury(II)]-μ-2,2'-(2-bromo-5-tert-butyl-1,3-phenyl-ene)bis-(1-methyl-1H-benzimidazole)-κ2N3:N3'], [HgCl2(C26H25BrN4)] n , the HgII atom is coordinated by two Cl atoms and by two N atoms from two 2,2'-(2-bromo-5-tert-butyl-1,3-phenyl-ene)bis-(1-methyl-1H-benzimidazole) ligands. The metal cation adopts a distorted tetrahedral coordination geometry with with bond angles around mercury of 100.59 (15)° [N-Hg-N] and 126.35 (7)° [Cl-Hg-Cl]. This arrangement gives rise to a zigzag helical 1-D polymer propagating along the b-axis direction.
Collapse
Affiliation(s)
- Varsha Rani
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India
| | - Harkesh B. Singh
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India
| | - Ray J. Butcher
- Department of Chemistry, Howard University, 525 College Street NW, Washington, DC 20059, USA
| |
Collapse
|
25
|
Rani V, Singh HB, Butcher RJ. Structure of the mercury(II) mixed-halide (Br/Cl) complex of 2,2'-(5- tert-butyl-1,3-phenyl-ene)bis-(1-pentyl-1 H-benzo[ d]imidazole). Acta Crystallogr E Crystallogr Commun 2017; 73:423-428. [PMID: 28316824 PMCID: PMC5347069 DOI: 10.1107/s2056989017002183] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Accepted: 02/09/2017] [Indexed: 11/30/2022]
Abstract
The mercury(II) complex of 2,2'-(5-tert-butyl-1,3-phenyl-ene)bis-(1-pentyl-1H-benz-imidazole), namely catena-poly[[dihalogenido-mercury(II)]-μ-2,2'-(5-tert-butyl-1,3-phenyl-ene)bis-(1-pentyl-1H-benzimidazole)-κ2N3:N3'], [HgBr1.52Cl0.48(C34H42N4)], 2, has a polymeric structure bridging via the N atoms from the benzimidazole moieties of the ligand. The compound crystallizes in the ortho-rhom-bic space group Pca21 and is a racemic twin [BASF = 0.402 (9)]. The geometry around the HgII atom is distorted tetra-hedral, with the HgII atom coordinated to two N atoms, one Br atom, and a fourth coordination site is occupied by a mixed halide (Br/Cl). For the two ligands in the asymmetric unit, there is disorder with one of the two tert-butyl groups and benzimidazole moieties showing twofold disorder, with occupancy factors of 0.57 (2):0.43 (2) for the tert-butyl group and 0.73 (3):0.27 (3) for the benzimidazole group. In addition, there is threefold disorder for two of the four n-pentyl groups, with occupancy factors of 0.669 (4):0.177 (4):0.154 (4) and 0.662 (4):0.224 (4):0.154 (4), respectively. The mol-ecules form a one-dimensional helical polymer propagating in the b-axis direction. The helices are held together by intra-strand C-H⋯Br and C-H⋯Cl inter-actions. Each strand is further linked by inter-strand C-H⋯Br and C-H⋯Cl inter-actions. In addition, there are weak C-H⋯N inter-strand inter-actions which further stabilize the structural arrangement.
Collapse
Affiliation(s)
- Varsha Rani
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India
| | - Harkesh B. Singh
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India
| | - Ray J. Butcher
- Department of Chemistry, Howard University, 525 College Street NW, Washington, DC 20059, USA
| |
Collapse
|
26
|
Rosales-Vázquez LD, Sánchez-Mendieta V, Dorazco-González A, Martínez-Otero D, García-Orozco I, Morales-Luckie RA, Jaramillo-Garcia J, Téllez-López A. Cadmium–1,4-cyclohexanedicarboxylato coordination polymers bearing different di-alkyl-2,2′-bipyridines: syntheses, crystal structures and photoluminescence studies. Dalton Trans 2017; 46:12516-12526. [DOI: 10.1039/c7dt02376f] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cd(ii) polymers, in acetone, can be used as luminescent materials for detection of CH3CN.
Collapse
Affiliation(s)
| | - Víctor Sánchez-Mendieta
- Facultad de Química
- Universidad Autónoma del Estado de México
- Toluca
- Mexico
- Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM
| | | | | | - Iván García-Orozco
- Facultad de Química
- Universidad Autónoma del Estado de México
- Toluca
- Mexico
| | | | | | | |
Collapse
|
27
|
Rajendra Kumar G, Thilagar P. Tuning the Phosphorescence and Solid State Luminescence of Triarylborane-Functionalized Acetylacetonato Platinum Complexes. Inorg Chem 2016; 55:12220-12229. [DOI: 10.1021/acs.inorgchem.6b01827] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- George Rajendra Kumar
- Inorganic and Physical Chemistry Department, Indian Institute of Science, Bangalore 560012, India
| | - Pakkirisamy Thilagar
- Inorganic and Physical Chemistry Department, Indian Institute of Science, Bangalore 560012, India
| |
Collapse
|
28
|
Lu YY, Li NL, Jia LP, Ma RN, Jia WL, Tao XQ, Cui H, Wang HS. The synthesis of Ag@CQDs composite and its electrochemiluminescence application for the highly selective and sensitive detection of chloride. J Electroanal Chem (Lausanne) 2016. [DOI: 10.1016/j.jelechem.2016.05.045] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
|
29
|
Bolotin DS, Novikov AS, Kolesnikov IE, Suslonov VV, Novozhilov Y, Ronzhina O, Dorogov M, Krasavin M, Yu. Kukushkin V. Phosphorescent Platinum(II) Complexes Featuring Chelated Acetoxime Pyrazoles: Synthetic, Structural, and Photophysical Study. ChemistrySelect 2016. [DOI: 10.1002/slct.201600130] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Dmitrii S. Bolotin
- Institute of Chemistry; Saint Petersburg State University; Universitetskaya Nab., 7/9 Saint Petersburg Russian Federation
| | - Alexander S. Novikov
- Institute of Chemistry; Saint Petersburg State University; Universitetskaya Nab., 7/9 Saint Petersburg Russian Federation
| | - Ilya E. Kolesnikov
- Center for Optical and Laser Materials Research; Saint Petersburg State University; Ul'yanovskaya St., 5 Saint Petersburg Russian Federation
| | - Vitaliy V. Suslonov
- Center for X-ray Diffraction Studies; Saint Petersburg State University; Universitetskii Pr., 26 Saint Petersburg Russian Federation
| | - Yuri Novozhilov
- The Ushinsky Yaroslavl State Pedagogical University; Respublikanskaya St., 108 Yaroslavl Russian Federation
| | - Oksana Ronzhina
- The Ushinsky Yaroslavl State Pedagogical University; Respublikanskaya St., 108 Yaroslavl Russian Federation
| | - Mikhail Dorogov
- The Ushinsky Yaroslavl State Pedagogical University; Respublikanskaya St., 108 Yaroslavl Russian Federation
| | - Mikhail Krasavin
- Institute of Chemistry; Saint Petersburg State University; Universitetskaya Nab., 7/9 Saint Petersburg Russian Federation
| | - Vadim Yu. Kukushkin
- Institute of Chemistry; Saint Petersburg State University; Universitetskaya Nab., 7/9 Saint Petersburg Russian Federation
| |
Collapse
|
30
|
Gong DP, Cao DK. Heteroleptic Ir(iii) and Pt(ii) complexes based on 2-(2,4-difluorophenyl)-pyridine and bisthienylethene BrLH: the influence of the metal center on structures, luminescence and photochromism. Dalton Trans 2016; 45:9328-35. [DOI: 10.1039/c6dt01175f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Based on bisthienylethene BrLH, [Ir(dfppy)2(BrL)]·3CH3OH (1) and [Pt(dfppy)(BrL)]·CH3OH (2) have been prepared. The two complexes are significantly different in structure, luminescence and photochromic behavior, due to their different metal centers.
Collapse
Affiliation(s)
- Dan-Ping Gong
- State Key Laboratory of Coordination Chemistry
- Coordination Chemistry Institute
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210093
| | - Deng-Ke Cao
- State Key Laboratory of Coordination Chemistry
- Coordination Chemistry Institute
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210093
| |
Collapse
|
31
|
Liu ZX, Sun Y, Feng Y, Chen H, He YM, Fan QH. Halogen-bonding for visual chloride ion sensing: a case study using supramolecular poly(aryl ether) dendritic organogel systems. Chem Commun (Camb) 2016; 52:2269-72. [DOI: 10.1039/c5cc09082b] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A convenient and straightforward method for the visual recognition of chloride ion has been established through a chloride-responsive dendritic organogel.
Collapse
Affiliation(s)
- Zhi-Xiong Liu
- Beijing National Laboratory for Molecular Sciences
- CAS Key Laboratory of Molecular Recognition
- Institute of Chemistry
- Chinese Academy of Sciences (CAS)
- Beijing 100190
| | - Yihua Sun
- Beijing National Laboratory for Molecular Sciences
- CAS Key Laboratory of Photochemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing
| | - Yu Feng
- Beijing National Laboratory for Molecular Sciences
- CAS Key Laboratory of Molecular Recognition
- Institute of Chemistry
- Chinese Academy of Sciences (CAS)
- Beijing 100190
| | - Hui Chen
- Beijing National Laboratory for Molecular Sciences
- CAS Key Laboratory of Photochemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing
| | - Yan-Mei He
- Beijing National Laboratory for Molecular Sciences
- CAS Key Laboratory of Molecular Recognition
- Institute of Chemistry
- Chinese Academy of Sciences (CAS)
- Beijing 100190
| | - Qing-Hua Fan
- Beijing National Laboratory for Molecular Sciences
- CAS Key Laboratory of Molecular Recognition
- Institute of Chemistry
- Chinese Academy of Sciences (CAS)
- Beijing 100190
| |
Collapse
|
32
|
Karimi MJ, Jamali S. Synthesis and structure of the cyclometalated hetero-binuclear Pt-Au complexes with bridging 2-diphenylphosphinopyridine ligand. J Organomet Chem 2015. [DOI: 10.1016/j.jorganchem.2015.02.043] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
33
|
Li K, Zou T, Chen Y, Guan X, Che CM. Pincer-Type Platinum(II) Complexes Containing N-Heterocyclic Carbene (NHC) Ligand: Structures, Photophysical and Anion-Binding Properties, and Anticancer Activities. Chemistry 2015; 21:7441-53. [PMID: 25828963 DOI: 10.1002/chem.201406453] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Indexed: 01/13/2023]
Abstract
Two classes of pincer-type Pt(II) complexes containing tridentate N-donor ligands (1-8) or C-deprotonated N^C^N ligands derived from 1,3-di(2-pyridyl)benzene (10-13) and auxiliary N-heterocyclic carbene (NHC) ligand were synthesized. [Pt(trpy)(NHC)](2+) complexes 1-5 display green phosphorescence in CH2 Cl2 (Φ: 1.1-5.3 %; τ: 0.3-1.0 μs) at room temperature. Moderate-to-intense emissions are observed for 1-7 in glassy solutions at 77 K and for 1-6 in the solid state. The [Pt(N^C^N)(NHC)](+) complexes 10-13 display strong green phosphorescence with quantum yields up to 65 % in CHCl3 . The reactions of 1 with a wide variety of anions were examined in various solvents. The tridentate N-donor ligand of 1 undergoes displacement reaction with CN(-) in protic solvents. Similar displacement of the N^C^N ligand by CN(-) has been observed for 10, leading to a luminescence "switch-off" response. The water-soluble 7 containing anthracenyl-functionalized NHC ligand acts as a light "switch-on" sensor for the detection of CN(-) ion with high selectivity. The in vitro cytotoxicity of the Pt(II) complexes towards HeLa cells has been evaluated. Complex 12 showed high cytotoxicity with IC50 value of 0.46 μM, whereas 1-4 and 6-8 are less cytotoxic. The cellular localization of the strongly luminescent complex 12 traced by using emission microscopy revealed that it mainly localizes in the cytoplasmic structures rather than in the nucleus. This complex can induce mitochondria dysfunction and subsequent cell death.
Collapse
Affiliation(s)
- Kai Li
- State Key Laboratory of Synthetic Chemistry, Institute of Molecular Functional Materials, HKU-CAS Joint Laboratory on New Materials and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong (P.R. China), Fax: (+852) 2915-5176; HKU Shenzhen Institute of Research and Innovation, Shenzhen 518053 (P.R. China)
| | | | | | | | | |
Collapse
|
34
|
Keymeulen F, De Bernardin P, Giannicchi I, Galantini L, Bartik K, Dalla Cort A. Fluoride binding in water with the use of micellar nanodevices based on salophen complexes. Org Biomol Chem 2015; 13:2437-43. [DOI: 10.1039/c4ob02298j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Uranyl-salophen complexes incorporated into micelles are evaluated as supramolecular nanosystems for the binding of fluoride in water.
Collapse
Affiliation(s)
- Flore Keymeulen
- Engineering of Molecular NanoSystems
- Université libre de Bruxelles
- B-1050 Brussels
- Belgium
| | - Paolo De Bernardin
- Engineering of Molecular NanoSystems
- Université libre de Bruxelles
- B-1050 Brussels
- Belgium
- Department of Chemistry and IMC-CNR
| | - Ilaria Giannicchi
- Department of Chemistry and IMC-CNR
- Università La Sapienza
- 00185 Roma
- Italy
| | - Luciano Galantini
- Department of Chemistry and IMC-CNR
- Università La Sapienza
- 00185 Roma
- Italy
| | - Kristin Bartik
- Engineering of Molecular NanoSystems
- Université libre de Bruxelles
- B-1050 Brussels
- Belgium
| | | |
Collapse
|
35
|
Ko SB, Park HJ, Gong S, Wang X, Lu ZH, Wang S. Blue phosphorescent N-heterocyclic carbene chelated Pt(ii) complexes with an α-duryl-β-diketonato ancillary ligand. Dalton Trans 2015; 44:8433-43. [DOI: 10.1039/c4dt03085k] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Blue phosphorescent Pt(ii) complexes that display bright blue emission in the solid state have been obtained employing NHC-based C∧C*-chelate ligands and an α-duryl-β-diketonato ancillary ligand that provides steric blocking to minimize intermolecular interactions.
Collapse
Affiliation(s)
- Soo-Byung Ko
- Department of Chemistry
- Queen's University
- Kingston
- Canada
| | - Hee-Jun Park
- Department of Chemistry
- Queen's University
- Kingston
- Canada
| | - Shaolong Gong
- Department of Materials Science and Engineering
- University of Toronto
- Toronto
- Canada
| | - Xiang Wang
- Department of Chemistry
- Queen's University
- Kingston
- Canada
| | - Zheng-Hong Lu
- Department of Materials Science and Engineering
- University of Toronto
- Toronto
- Canada
| | - Suning Wang
- Department of Chemistry
- Queen's University
- Kingston
- Canada
| |
Collapse
|
36
|
Kayano T, Takayasu S, Sato K, Shinozaki K. Luminescence color tuning of Pt(II) complexes and a kinetic study of trimer formation in the photoexcited state. Chemistry 2014; 20:16583-9. [PMID: 25327871 DOI: 10.1002/chem.201403789] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2014] [Indexed: 11/09/2022]
Abstract
We investigated the luminescence properties and color tuning of [Pt(dpb)Cl] (dpbH=1,3-di(2-pyridyl)benzene) and its analogues. An almost blue emission was obtained for the complex [Pt(Fmdpb)CN] (FmdpbH=4-fluoro-1,3-di(4-methyl-2-pyridyl)benzene), modified by the introduction of F and CH3 groups to the dpb ligand and the substitution of Cl by CN. As the concentration of the solution was increased, the color of the emission varied from blue to white to orange. The color change resulted from a monomer-excimer equilibrium in the excited state. A broad emission spectrum around 620 nm was clearly detected along with a structured monomer emission around 500 nm. Upon further increases in concentration, another broad peak appeared in the longer wavelength region of the spectrum. We assigned the near-infrared band to the emission from an excited trimer generated by the reaction of the excimer with the ground-state monomer. The emission lifetimes of the monomer, dimer, and trimer were evaluated as τM =12.8 μs, τD =2.13 μs, and τT =0.68 μs, respectively, which were sufficiently long to allow association with another Pt(II) complex and dissociation into a lower order aggregate. Based on equilibrium constants determined from a kinetic study, the formation of the excimer and the excited trimer were concluded to be exothermic processes, with ΔG*D =-24.5 kJ mol(-1) and ΔG*T =-20.4 kJ mol(-1) respectively, at 300 K.
Collapse
Affiliation(s)
- T Kayano
- Department of Materials System Science, Graduate School of Nanobiosystem Sciences, Yokohama City University, 22-2 Seto, Yokohama, 236-0027 (Japan), Fax: (+81) 45-787-2413
| | | | | | | |
Collapse
|
37
|
Micksch M, Tenne M, Strassner T. C∧N-Cyclometalated Platinum(II) Complexes with Sterically Demanding 1,2-Diarylimidazole Ligands. Organometallics 2014. [DOI: 10.1021/om500383b] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Maik Micksch
- Physikalische
Organische Chemie, Technische Universität Dresden, 01069 Dresden, Germany
| | - Mario Tenne
- Physikalische
Organische Chemie, Technische Universität Dresden, 01069 Dresden, Germany
| | - Thomas Strassner
- Physikalische
Organische Chemie, Technische Universität Dresden, 01069 Dresden, Germany
| |
Collapse
|