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Parambath JBM, Hameed M, Mohamed AA. Potential sensing of cyanide anion using fluorescent lysozyme gold-aryl bioconjugates. CHEMICAL PAPERS 2022. [DOI: 10.1007/s11696-022-02117-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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2
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Sharutin VV, Sharutina OK, Tarasova NM, El’tsov ОS. Synthesis and Structure of (4Fluorobenzyl)triphenylphosphonium Dicyanodihaloaurates [Ph3PCH2C6H4F-4][Au(CN)2Hlg2]. RUSS J GEN CHEM+ 2021. [DOI: 10.1134/s1070363221110086] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Mohd Yusof Chan NN, Idris A, Zainal Abidin ZH, Tajuddin HA, Abdullah Z. White light employing luminescent engineered large (mega) Stokes shift molecules: a review. RSC Adv 2021; 11:13409-13445. [PMID: 35423891 PMCID: PMC8697633 DOI: 10.1039/d1ra00129a] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 05/14/2021] [Accepted: 03/03/2021] [Indexed: 12/14/2022] Open
Abstract
Large (mega) Stokes shift molecules have shown great potential in white light emission for optoelectronic applications, such as flat panel display technology, light-emitting diodes, photosensitizers, molecular probes, cellular and bioimaging, and other applications. This review aims to summarize recent developments of white light generation that incorporate a large Stokes shift component, key approaches to designing large Stokes shift molecules, perspectives on future opportunities, and remaining challenges confronting this emerging research field. After a brief introduction of feasible pathways in generating white light, exemplifications of large Stokes shift molecules as white light candidates from organic and inorganic-based materials are illustrated. Various possible ways to design such molecules have been revealed by integrating the photophysical mechanisms that are essential to produce red-shifted emission upon photoexcitation, such as excited state intramolecular proton transfer (ESIPT), intramolecular charge transfer (ICT), excited state geometrical relaxation or structural deformation, aggregation-induced emission (AIE) alongside the different formations of aggregates, interplay between monomer and excimer emission, host-guest interaction, and lastly metal to ligand charge transfer (MLCT) via harvesting triplet state. Furthermore, previously reported fluorescent materials are described and categorized based on luminescence behaviors on account of the Stokes shifts value. This review will serve as a rationalized introduction and reference for researchers who are interested in exploring large or mega Stokes shift molecules, and will motivate new strategies along with instigation of persistent efforts in this prominent subject area with great avenues.
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Affiliation(s)
- Nadia Nabihah Mohd Yusof Chan
- Department of Chemistry, Faculty of Science, University of Malaya 50603 Kuala Lumpur Malaysia
- Centre for Ionics University of Malaya, Department of Physics, Faculty of Science, University of Malaya 50603 Kuala Lumpur Malaysia
| | - Azila Idris
- Department of Chemistry, Faculty of Science, University of Malaya 50603 Kuala Lumpur Malaysia
| | - Zul Hazrin Zainal Abidin
- Centre for Ionics University of Malaya, Department of Physics, Faculty of Science, University of Malaya 50603 Kuala Lumpur Malaysia
| | - Hairul Anuar Tajuddin
- Department of Chemistry, Faculty of Science, University of Malaya 50603 Kuala Lumpur Malaysia
| | - Zanariah Abdullah
- Department of Chemistry, Faculty of Science, University of Malaya 50603 Kuala Lumpur Malaysia
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Sharutin VV, Sharutina OK, Efremov AN, Eltsov OS. Synthesis and Structure of Tetra(para-tolyl)antimony Dicyanodiiodoaurate [p-Tol4Sb][Au(CN)2I2] and Alkyltriphenylphosphonium Dicyanodiiodoaurates [Ph3PAlk][Au(CN)2I2], Alk = Me, CH2CN. RUSS J COORD CHEM+ 2020. [DOI: 10.1134/s1070328420090031] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Schmidbaur H, Raubenheimer HG. Excimer and Exciplex Formation in Gold(I) Complexes Preconditioned by Aurophilic Interactions. Angew Chem Int Ed Engl 2020; 59:14748-14771. [PMID: 32022383 PMCID: PMC7496071 DOI: 10.1002/anie.201916255] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Indexed: 11/23/2022]
Abstract
Excimers and exciplexes are defined as assemblies of atoms or molecules A/A' where interatomic/intermolecular bonding appears only in excited states such as [A2 ]* (for excimers) and [AA']* (for exciplexes). Their formation has become widely known because of their role in gas-phase laser technologies, but their significance in general chemistry terms has been given little attention. Recent investigations in gold chemistry have opened up a new field of excimer and exciplex chemistry that relies largely on the preorganization of gold(I) compounds (electronic configuration AuI (5d10 )) through aurophilic contacts. In the corresponding excimers, a new type of Au⋅⋅⋅Au bonding arises, with bond energies and lengths approaching those of ground-state Au-Au bonds between metal atoms in the Au0 (5d10 6s1 ) and AuII (5d9 ) configurations. Excimer formation gives rise to a broad range of photophysical effects, for which some of the relaxation dynamics have recently been clarified. Excimers have also been shown to play an important role in photoredox binuclear gold catalysis.
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Affiliation(s)
- Hubert Schmidbaur
- Department ChemieTechnische Universität MünchenLichtenbergstr. 485747GarchingGermany
| | - Helgard G. Raubenheimer
- Department of Chemistry and Polymer ScienceUniversity of StellenboschPrivate Bag X1Matieland7602South Africa
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Schmidbaur H, Raubenheimer HG. Excimer‐ und Exciplex‐Bildung in durch aurophile Wechselwirkungen präkonditionierten Gold(I)‐ Komplexen. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201916255] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Hubert Schmidbaur
- Department Chemie Technische Universität München Lichtenbergstr. 4 85747 Garching Deutschland
| | - Helgard G. Raubenheimer
- Department of Chemistry and Polymer Science University of Stellenbosch Private Bag X1 Matieland 7602 Südafrika
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Sharutin VV, Sharutina OK, Tarasova NM, Efremov AN. Trialkyl Triphenyl Phosphonium Dicyanodibromoaurates [Ph3PAlk][Au(CN)2Br2], Alk = CH2C6H4(OH)-2, CH2C6H11-cyclo, CH2Ph, CH2C6H4CN-4. RUSS J INORG CHEM+ 2020. [DOI: 10.1134/s0036023620020151] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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8
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Sharutin VV, Sharutina OK, Popkova MA, Tarasova NM, Polozova VV. Organyltriphenylphosphonium Dicyanoargentates [Ph3PCH2СH=CHCH2PPh3]2+[Ag(CN)2]$$_{2}^{ - }$$ and [Ph3PR]+[Ag(CN)2]– (R = Et, CH=CMe2): Synthesis and Structure. RUSS J INORG CHEM+ 2020. [DOI: 10.1134/s0036023619120155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Nicholas AD, Ahern JC, Patterson HH. Energy transfer studies between mixed Au-Pd cyanide nanosystems and Tb+3 doped in different alkali halides. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2019.112136] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Nicholas AD, Connolly RP, Szewczyk TE, Patterson HH. Nanoclusters of Dicyanocuprate(I) Anions in Aqueous Solutions: Investigating Cuprophilic Interactions. ChemistrySelect 2019. [DOI: 10.1002/slct.201901396] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Nicholas AD, Bullard RM, Wheaton AM, Streep M, Nicholas VA, Pike RD, Patterson HH. Synthesis and Luminescence of Optical Memory Active Tetramethylammonium Cyanocuprate(I) 3D Networks. MATERIALS 2019; 12:ma12081211. [PMID: 31013868 PMCID: PMC6514951 DOI: 10.3390/ma12081211] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/24/2019] [Revised: 04/07/2019] [Accepted: 04/10/2019] [Indexed: 11/17/2022]
Abstract
The structures of three tetramethylammonium cyanocuprate(I) 3D networks [NMe4]2[Cu(CN)2]2•0.25H2O (1), [NMe4][Cu3(CN)4] (2), and [NMe4][Cu2(CN)3] (3), (Me4N = tetramethylammonium), and the photophysics of 1 and 2 are reported. These complexes are prepared by combining aqueous solutions of the simple salts tetramethylammonium chloride and potassium dicyanocuprate. Single-crystal X-ray diffraction analysis of complex 1 reveals {Cu2(CN)2(μ2-CN)4} rhomboids crosslinked by cyano ligands and D3h {Cu(CN)3} metal clusters into a 3D coordination polymer, while 2 features independent 2D layers of fused hexagonal {Cu8(CN)8} rings where two Cu(I) centers reside in a linear C∞v coordination sphere. Metallophilic interactions are observed in 1 as close Cu⋯Cu distances, but are noticeably absent in 2. Complex 3 is a simple honeycomb sheet composed of trigonal planar Cu(I) centers with no Cu…Cu interactions. Temperature and time-dependent luminescence of 1 and 2 have been performed between 298 K and 78 K and demonstrate that 1 is a dual singlet/triplet emitter at low temperatures while 2 is a triplet-only emitter. DFT and TD-DFT calculations were used to help interpret the experimental findings. Optical memory experiments show that 1 and 2 are both optical memory active. These complexes undergo a reduction of emission intensity upon laser irradiation at 255 nm although this loss is much faster in 2. The loss of emission intensity is reversible in both cases by applying heat to the sample. We propose a light-induced electron transfer mechanism for the optical memory behavior observed.
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Affiliation(s)
- Aaron D Nicholas
- Department of Chemistry, University of Maine, Orono, ME 04469, USA.
| | - Rebeka M Bullard
- Department of Chemistry, University of Maine, Orono, ME 04469, USA.
| | - Amelia M Wheaton
- Department of Chemistry, College of William and Mary, Williamsburg, VA 23187-8795, USA.
| | - Michaela Streep
- Department of Chemistry, College of William and Mary, Williamsburg, VA 23187-8795, USA.
| | | | - Robert D Pike
- Department of Chemistry, College of William and Mary, Williamsburg, VA 23187-8795, USA.
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Nicholas AD, Bullard RM, Pike RD, Patterson HH. Photophysical Investigation of Silver/Gold Dicyanometallates and Tetramethylammonium Networks: An Experimental and Theoretical Investigation. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201801407] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Aaron D. Nicholas
- Department of Chemistry University of Maine 5706 Orono, ME 04469‐ USA
| | - Rebeka M. Bullard
- Department of Chemistry University of Maine 5706 Orono, ME 04469‐ USA
| | - Robert D. Pike
- Department of Chemistry College of William and Mary 8795 Williamsburg, VA 23187‐ USA
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Patel EN, Arthur RB, Nicholas AD, Reinheimer EW, Omary MA, Brichacek M, Patterson HH. Synthesis, structure and photophysical properties of a 2D network with gold dicyanide donors coordinated to aza[5]helicene viologen acceptors. Dalton Trans 2019; 48:10288-10297. [DOI: 10.1039/c9dt01823a] [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
Investigation of a gold-heli viologen network shows the presence of [Au(CN)2]− dimers and monomers within the 2D framework, and quenching of the [Au(CN)2]− luminescence by the helicene.
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Affiliation(s)
| | | | | | - Eric W. Reinheimer
- Department of Chemistry and Biochemistry and the W.M. Keck Foundation Center for Molecular Structure
- California State University
- San Marcos
- USA
- Department of Chemistry
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Vasylevskyi SI, Regeta K, Ruggi A, Petoud S, Piguet C, Fromm KM. cis- and trans-9,10-di(1H-imidazol-1-yl)-anthracene based coordination polymers of ZnII and CdII: synthesis, crystal structures and luminescence properties. Dalton Trans 2018; 47:596-607. [DOI: 10.1039/c7dt03758a] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
New luminescent coordination polymers of anthracene with ZnII and CdII were developed for detection of traces of nitro explosives.
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Affiliation(s)
| | - Khrystyna Regeta
- Universidade Nova de Lisboa
- Departamento de Física
- 2829-516 Caparica
- Portugal
| | - Albert Ruggi
- University of Fribourg
- Chemistry Department
- 1700 Fribourg
- Switzerland
| | - Stéphane Petoud
- University of Geneva
- Department of Inorganic and Analytical Chemistry
- 1211 Geneva 4
- Switzerland
| | - Claude Piguet
- University of Geneva
- Department of Inorganic and Analytical Chemistry
- 1211 Geneva 4
- Switzerland
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Wakabayashi R, Maeba J, Nozaki K, Iwamura M. Considerable Enhancement of Emission Yields of [Au(CN)2(-)] Oligomers in Aqueous Solutions by Coexisting Cations. Inorg Chem 2016; 55:7739-46. [PMID: 27391559 DOI: 10.1021/acs.inorgchem.6b01205] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The photophysical properties of [Au(CN)2(-)] oligomers in aqueous solutions were investigated as functions of coexisting cations as well as the viscosity and temperature of solutions. A solution of [Au(CN)2(-)] in the concentration range of 0.03-0.2 mol/dm(3) exhibited emission peaks at 460-480 nm because of the presence of oligomers larger than trimers. Although the emission yields (ϕem) of K[Au(CN)2] solutions were <1%, it considerably increased to 43% when 1.0 mol/dm(3) tetraethylammonium chloride (Et4NCl) was added. The lifetimes of the main emission bands were also significantly varied with additional salts, e.g., KCl, 15 ns; Et4NCl, 520 ns. The time-resolved emission measurements of [Au(CN)2(-)] in a water/glycerol mixture indicated that the lifetimes were almost directly proportional to the inverse of the viscosity of the solution. On the other hand, the intrinsic lifetimes of dimers and trimers with weak emission in shorter wavelength regions were very short and independent of the viscosity of the solutions and coexisting cations (dimer, ∼25 ps; trimer, ∼2 ns). These results indicated that the deactivation of the excited-state [Au(CN)2(-)]n oligomers (n ≥ 4) was dominated by the dissociation of the oligomers to a shorter species (dimer or trimer). The hydrophobic interactions between tetraalkylammonium cations and CN ligands remarkably stabilized the larger oligomers and suppressed the dissociation of the excited-state oligomers, which enhanced the emission yield of the oligomers. This work provides a new method of "exciplex tuning" by changing the environment of excited-state [Au(CN)2(-)]n oligomers.
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Affiliation(s)
- Ryo Wakabayashi
- Graduate School of Science and Engineering, University of Toyama , 3190 Gofuku, Toyama 930-8555, Japan
| | - Junichi Maeba
- Graduate School of Science and Engineering, University of Toyama , 3190 Gofuku, Toyama 930-8555, Japan
| | - Koichi Nozaki
- Graduate School of Science and Engineering, University of Toyama , 3190 Gofuku, Toyama 930-8555, Japan
| | - Munetaka Iwamura
- Graduate School of Science and Engineering, University of Toyama , 3190 Gofuku, Toyama 930-8555, Japan
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Iwamura M, Wakabayashi R, Maeba J, Nozaki K, Takeuchi S, Tahara T. Coherent vibration and ultrafast dynamics upon bond formation in excited dimers of an Au(i) complex. Phys Chem Chem Phys 2016; 18:5103-7. [DOI: 10.1039/c5cp06651d] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Au–Au bond strengthening in photoexcited dimers of an Au(i) complex is captured in solution as oscillations of femtosecond absorption signals.
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Affiliation(s)
- Munetaka Iwamura
- Graduate School of Science and Engineering
- University of Toyama
- Toyama 930-8555
- Japan
| | - Ryo Wakabayashi
- Graduate School of Science and Engineering
- University of Toyama
- Toyama 930-8555
- Japan
| | - Junichi Maeba
- Graduate School of Science and Engineering
- University of Toyama
- Toyama 930-8555
- Japan
| | - Koichi Nozaki
- Graduate School of Science and Engineering
- University of Toyama
- Toyama 930-8555
- Japan
| | - Satoshi Takeuchi
- Molecular Spectroscopy Laboratory
- RIKEN
- Wako
- Japan
- Ultrafast Spectroscopy Research Team
| | - Tahei Tahara
- Molecular Spectroscopy Laboratory
- RIKEN
- Wako
- Japan
- Ultrafast Spectroscopy Research Team
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