1
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Shaydullin RR, Galushko AS, Pentsak EO, Korshunov VM, Taydakov IV, Gordeev EG, Minyaev ME, Nasyrova DI, Ananikov VP. Yellow to blue switching of fluorescence by the tuning of the pentaphenylphosphole structure: phosphorus electronic state vs. ring conjugation. Phys Chem Chem Phys 2022; 24:25307-25315. [PMID: 36226548 DOI: 10.1039/d2cp03723h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
The interaction between diphenylacetylene and dichlorophenylphosphine under various conditions is a simple method for the preparation of pentaphenylphosphole derivatives exhibiting fluorescence properties. Depending on the electronic state of the various centers of the phospholic structure, it was possible to obtain molecules with fluorescence, as in the blue area for 1,2,3,4,5-pentaphenyl-2,5-dihydro-phosphole-1-oxide (H2PPPO), in the yellow area for 1,2,3,4,5-pentaphenylphosphole-1-oxide (PPPO) and in the cyan area for 1,2,3,4,5-pentaphenylphosphole (PPP). The effect of the structure and π-conjugation on the optical properties of these compounds was studied using PPP derivatives as examples. Unusual changes in the optical properties of PPP derivatives in solution and in the crystalline state are explained. In the case of agglomeration of PPPO and PPP molecules, the effect of aggregation-induced emission (AIE) was observed to have weak fluorescence in solution and strong fluorescence in the aggregated state. However, for H2PPPO, the AIE effect remains mild. With the help of experimental studies, supported by theoretical calculations, the main mechanism of the optical properties of pentaphenylphosphole derivatives has been revealed. It was observed that the intramolecular motions of PPPO and PPP are more limited in the solid state than the motions of H2PPPO, which is associated with less conjugation of the phenyl rotors of H2PPPO. The analysis of the structure and distribution of electron density showed why hydrogenation of the phosphole ring leads to a sharp change in the optical properties of pentaphenylphosphole derivatives, while the oxidation of phosphorus does not lead to the disappearance of the AIE effect and to a lesser extent affects the change in the fluorescence wavelength. Thus, it was shown how the regulation of various structural features of the phospholic ring helps to control the optical properties of such compounds.
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Affiliation(s)
- Ruslan R Shaydullin
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow 119991, Russia.
| | - Alexey S Galushko
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow 119991, Russia.
| | - Evgeniy O Pentsak
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow 119991, Russia.
| | - Vladislav M Korshunov
- Lebedev Physical Institute of the Russian Academy of Sciences, Moscow 119991, Russia
| | - Ilya V Taydakov
- Lebedev Physical Institute of the Russian Academy of Sciences, Moscow 119991, Russia
| | - Evgeniy G Gordeev
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow 119991, Russia.
| | - Mikhail E Minyaev
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow 119991, Russia.
| | - Darina I Nasyrova
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow 119991, Russia.
| | - Valentine P Ananikov
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow 119991, Russia.
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2
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Singha J, Patra D, Kumar P, Shunmugam R. Highly Efficient Multi‐Tasking Porphyrin‐Based Chemosensor for Mercury Ions. ChemistrySelect 2022. [DOI: 10.1002/slct.202104063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jyotirlata Singha
- Polymer Research Center Department of Chemical Sciences Indian Institute of Science Education and Research Kolkata Mohanpur India
| | - Diptendu Patra
- Polymer Research Center Department of Chemical Sciences Indian Institute of Science Education and Research Kolkata Mohanpur India
| | - Pawan Kumar
- Polymer Research Center Department of Chemical Sciences Indian Institute of Science Education and Research Kolkata Mohanpur India
| | - Raja Shunmugam
- Polymer Research Center Department of Chemical Sciences Indian Institute of Science Education and Research Kolkata Mohanpur India
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3
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Mackenzie HK, Rawe BW, Samedov K, Walsgrove HTG, Uva A, Han Z, Gates DP. A Smart Phosphine–Diyne Polymer Displays “Turn-On” Emission with a High Selectivity for Gold(I/III) Ions. J Am Chem Soc 2020; 142:10319-10324. [DOI: 10.1021/jacs.0c04330] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Harvey K. Mackenzie
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, Canada V6T 1Z1
| | - Benjamin W. Rawe
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, Canada V6T 1Z1
| | - Kerim Samedov
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, Canada V6T 1Z1
| | - Henry T. G. Walsgrove
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, Canada V6T 1Z1
| | - Azalea Uva
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, Canada V6T 1Z1
| | - Zeyu Han
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, Canada V6T 1Z1
| | - Derek P. Gates
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, Canada V6T 1Z1
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4
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Pashazadeh‐Panahi P, Hasanzadeh M, Eivazzadeh‐Keihan R. A novel optical probe based on
d
‐penicillamine‐functionalized graphene quantum dots: Preparation and application as signal amplification element to minoring of ions in human biofluid. J Mol Recognit 2020; 33:e2828. [DOI: 10.1002/jmr.2828] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2019] [Revised: 11/13/2019] [Accepted: 11/28/2019] [Indexed: 11/08/2022]
Affiliation(s)
| | - Mohammad Hasanzadeh
- Pharmaceutical Analysis Research CenterTabriz University of Medical Sciences Tabriz Iran
| | - Reza Eivazzadeh‐Keihan
- Catalysts and Organic Synthesis Research Laboratory, Department of ChemistryIran University of Science and Technology Tehran Iran
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5
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Hazarika SI, Dolai B, Atta AK. Water compatible triazole linked pyrene-C1-glucosyl fluorescent sensor for Au3+ and living cell imaging studies. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.127272] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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6
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Belyaev A, Kolesnikov I, Melnikov AS, Gurzhiy VV, Tunik SP, Koshevoy IO. Solution versus solid-state dual emission of the Au(i)-alkynyl diphosphine complexes via modification of polyaromatic spacers. NEW J CHEM 2019. [DOI: 10.1039/c9nj03426a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Single molecule luminophores capable of multiple emissions are essential for the development of new materials with unconventional photophysical behavior.
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Affiliation(s)
- Andrey Belyaev
- Department of Chemistry
- University of Eastern Finland
- Joensuu
- Finland
| | - Ilya Kolesnikov
- Center for Optical and Laser Materials Research
- St. Petersburg State University
- St. Petersburg
- Russia
| | | | | | - Sergey P. Tunik
- Institute of Chemistry
- St. Petersburg State University
- St. Petersburg
- Russia
| | - Igor O. Koshevoy
- Department of Chemistry
- University of Eastern Finland
- Joensuu
- Finland
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7
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Yang M, Pati N, Bélanger-Chabot G, Hirai M, Gabbaï FP. Influence of the catalyst structure in the cycloaddition of isocyanates to oxiranes promoted by tetraarylstibonium cations. Dalton Trans 2018; 47:11843-11850. [PMID: 29697133 DOI: 10.1039/c8dt00702k] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
In the context of our work on electron deficient group 15 cations as Lewis acid catalysts, we have synthesized the triflate salts of a series of tetraarylstibonium cations of general formula [ArSbPh3]+ with Ar = Mes (4+), o-(dimethylamino)phenyl (5+), and o-((dimethylamino)methyl)phenyl (6+). These new cationic antimony derivatives, along with the known [Ph4Sb]+ (1+), 1-naphthyltriphenylstibonium (2+), and [(Ant)SbPh3]+ (3+), have been evaluated as catalysts for the cycloaddition of oxiranes and isocyanates under mild conditions. While all stibonium cations favor the 3,4-oxazolidinone products, the reactivities of 5+ and 6+ are hindered by the ancillary amino donor which quenches the Lewis acidity of the antimony center. A comparison of the other stibonium cations shows that 4+ is the most selective catalyst.
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Affiliation(s)
- Mengxi Yang
- Department of Chemistry, Texas A&M University, College Station, TX 77843, USA.
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8
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Groves LM, Ward BD, Newman PD, Horton PN, Coles SJ, Pope SJA. Synthesis and characterisation of fluorescent aminophosphines and their coordination to gold(i). Dalton Trans 2018; 47:9324-9333. [PMID: 29947395 DOI: 10.1039/c8dt02256a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Three novel fluorescent aminophosphine ligands have been synthesised that incorporate napthyl (L1), pyrenyl (L2) and anthraquinone (L3) chromophores into their structures. The ligands react with [AuCl(tht)] (tht = tetrahydrothiophene) to give neutral complexes of the form [AuCl(L1-3)]. Solid state, X-ray crystallographic data was obtained for the anthraquinone derivative, [AuCl(L3)], and showed a distorted linear coordination geometry at Au(i). The packing structure also revealed a number of intermolecular π-π interactions that involve the anthraquinone and phenyl units of the aminophosphine ligand. 31P NMR spectroscopic data revealed δP values of +42.2 (L1), +42.1 (L2) and +26.1 (L3) ppm, which shifted downfield upon coordination to Au(i) to +64.6, +64.7, and +55.8 ppm, respectively. Supporting TD-DFT studies were able to reproduce the structure and 31P NMR chemical shifts of [AuCl(L3)] as well as rationalise the HOMO-LUMO compositions. Photophysical studies showed that the appended fluorophore dominates the absorption and emission properties for the ligands and complexes, with the anthraquinone derivatives showing visible emission at ca. 570 nm which was attributed to the intramolecular charge transfer character of the phosphinoaminoanthraquinone fragment.
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Affiliation(s)
- Lara M Groves
- School of Chemistry, Main Building, Cardiff University, Cardiff CF10 3AT, UK.
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9
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Cheung AFF, Hong EYH, Yam VWW. Supramolecular Assembly of Phosphole Oxide Based Alkynylplatinum(II) 2,6-Bis(N-alkylbenzimidazol-2'-yl)pyridine Complexes-An Interplay of Hydrophobicity and Aromatic π-Surfaces. Chemistry 2018; 24:1383-1393. [PMID: 29266490 DOI: 10.1002/chem.201704110] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Indexed: 01/27/2023]
Abstract
A new class of phosphole oxide based alkynylplatinum(II) 2,6-bis(N-alkylbenzimidazol-2'-yl)pyridine (bzimpy) complexes were synthesized and characterized. Their self-assembly was driven by hydrophobic-hydrophobic and π-π stacking interactions. The self-assembly properties were also investigated by UV/Vis absorption spectroscopy, which revealed that the alkyl-chain length of the bzimpy moiety and the π-surface area of the alkynyl ligand have significant influence on the overall self-assembly process. The alkyl-chain length also affected the morphological structures of the aggregates, which were studied by transmission electron microscopy and scanning electron microscopy.
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Affiliation(s)
- Andy Fu-Fai Cheung
- Institute of Molecular Functional Materials and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Eugene Yau-Hin Hong
- Institute of Molecular Functional Materials and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Vivian Wing-Wah Yam
- Institute of Molecular Functional Materials and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
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10
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Li Z, Xu Y, Fu J, Zhu H, Qian Y. Monitoring of Au(iii) species in plants using a selective fluorescent probe. Chem Commun (Camb) 2018; 54:888-891. [DOI: 10.1039/c7cc08333e] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A colorimetric and ratiometric probe with a push–pull chromophore dicyanoisophorone system, AuP, has been developed for the detection of Au(iii) species with highly sensitive and selective response to real-water samples and living tissues of Arabidopsis thaliana.
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Affiliation(s)
- Zhen Li
- State Key Laboratory of Pharmaceutical Biotechnology
- School of Life Sciences
- Nanjing University
- Nanjing 210023
- China
| | - Yuqing Xu
- State Key Laboratory of Pharmaceutical Biotechnology
- School of Life Sciences
- Nanjing University
- Nanjing 210023
- China
| | - Jie Fu
- Department of Environmental Science & Engineering
- Fudan University
- Shanghai 200433
- China
| | - Hailiang Zhu
- State Key Laboratory of Pharmaceutical Biotechnology
- School of Life Sciences
- Nanjing University
- Nanjing 210023
- China
| | - Yong Qian
- State Key Laboratory of Pharmaceutical Biotechnology
- School of Life Sciences
- Nanjing University
- Nanjing 210023
- China
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11
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Wang L, Filatov AS, Engel GS. Crystal structure of 4'-allyl-4,5,6,7,2',7'-hexa-chloro-fluorescein allyl ester unknown solvate. Acta Crystallogr E Crystallogr Commun 2018; 74:83-87. [PMID: 29416898 PMCID: PMC5778492 DOI: 10.1107/s2056989017018163] [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: 11/21/2017] [Accepted: 12/19/2017] [Indexed: 11/30/2022]
Abstract
In the title compound, 4'-allyl-4,5,6,7,2',7'-hexa-chloro-fluorescein allyl ester {systematic name: prop-2-en-1-yl 2,3,4,5-tetra-chloro-6-[2,7-di-chloro-6-hy-droxy-3-oxo-4-(prop-2-en-1-yl)-3H-xanthen-9-yl]benzoate}, C26H14Cl6O5, accompanied by unknown solvate molecules, the dihedral angle between the xanthene ring system (r.m.s. deviation = 0.046 Å) and the penta-substituted benzene ring is 71.67 (9)°. Both allyl groups are disordered over two sets of sites in statistical ratios. The scattering contributions of the disordered solvent mol-ecules (both Ph2O and CHCl3, as identified by NMR) were removed with the PLATON SQUEEZE algorithm [Spek (2015 ▸). Acta Cryst. C71, 9-18]. In the crystal, tetra-meric supra-molecular aggregates linked by O-H⋯O hydrogen bonds occur; these further inter-act with neighboring aggregates through C-Cl⋯π inter-actions arising from the benzene rings, forming infinite two-dimensional sheets. Each C6Cl4 ring shifts in the direction perpendicular to the two-dimensional sheet, exhibiting a helical chain in which every C6Cl4 ring is utilized as both a donor and an acceptor of Cl⋯π contacts. Thus, these two-dimensional sheets pack in a helical fashion, constructing a three-dimensional network.
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Affiliation(s)
- Lili Wang
- Department of Chemistry, James Franck Institute, Institute for Biophysical Dynamics, University of Chicago, 5735 South Ellis ave, Chicago, IL 60637, USA
| | - Alexander S. Filatov
- Department of Chemistry, James Franck Institute, Institute for Biophysical Dynamics, University of Chicago, 5735 South Ellis ave, Chicago, IL 60637, USA
| | - Gregory S. Engel
- Department of Chemistry, James Franck Institute, Institute for Biophysical Dynamics, University of Chicago, 5735 South Ellis ave, Chicago, IL 60637, USA
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12
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Yan F, Fan K, Bai Z, Zhang R, Zu F, Xu J, Li X. Fluorescein applications as fluorescent probes for the detection of analytes. Trends Analyt Chem 2017. [DOI: 10.1016/j.trac.2017.08.013] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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13
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Rawe BW, Scott MR, Brown CM, MacKenzie HK, Gates DP. Poly(p-phenylenediethynylene phosphine)s and Related π-Conjugated Phosphine–Diyne Polymers: Synthesis, Characterization and Photophysical Properties. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b01933] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Benjamin W. Rawe
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia Canada, V6T 1Z1
| | - Michael R. Scott
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia Canada, V6T 1Z1
| | - Christopher M. Brown
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia Canada, V6T 1Z1
| | - Harvey K. MacKenzie
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia Canada, V6T 1Z1
| | - Derek P. Gates
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia Canada, V6T 1Z1
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14
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Shakirova JR, Tomashenko OA, Grachova EV, Starova GL, Sizov VV, Khlebnikov AF, Tunik SP. Gold(I)–Alkynyl Complexes with an N‐Donor Heterocyclic Ligand: Synthesis and Photophysical Properties. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700731] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Julia R. Shakirova
- Institute of Chemistry St. Petersburg State University 7/9 Universitetskaya emb. 199034 St. Petersburg Russia
| | - Olesya A. Tomashenko
- Institute of Chemistry St. Petersburg State University 7/9 Universitetskaya emb. 199034 St. Petersburg Russia
| | - Elena V. Grachova
- Institute of Chemistry St. Petersburg State University 7/9 Universitetskaya emb. 199034 St. Petersburg Russia
| | - Galina L. Starova
- Institute of Chemistry St. Petersburg State University 7/9 Universitetskaya emb. 199034 St. Petersburg Russia
| | - Vladimir V. Sizov
- Institute of Chemistry St. Petersburg State University 7/9 Universitetskaya emb. 199034 St. Petersburg Russia
| | - Alexander F. Khlebnikov
- Institute of Chemistry St. Petersburg State University 7/9 Universitetskaya emb. 199034 St. Petersburg Russia
| | - Sergey P. Tunik
- Institute of Chemistry St. Petersburg State University 7/9 Universitetskaya emb. 199034 St. Petersburg Russia
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15
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Rawe BW, Brown CM, MacKinnon MR, Patrick BO, Bodwell GJ, Gates DP. A C-Pyrenyl Poly(methylenephosphine): Oxidation “Turns On” Blue Photoluminescence in Solution and the Solid State. Organometallics 2017. [DOI: 10.1021/acs.organomet.6b00880] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Benjamin W. Rawe
- Department
of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, Canada V6T 1Z1
| | - Christopher M. Brown
- Department
of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, Canada V6T 1Z1
| | - Marc R. MacKinnon
- Department
of Chemistry, Memorial University of Newfoundland, St. John’s, Newfoundland
and Labrador, Canada A1B
3X7
| | - Brian O. Patrick
- Department
of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, Canada V6T 1Z1
| | - Graham J. Bodwell
- Department
of Chemistry, Memorial University of Newfoundland, St. John’s, Newfoundland
and Labrador, Canada A1B
3X7
| | - Derek P. Gates
- Department
of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, Canada V6T 1Z1
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16
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Escudero D. Revising Intramolecular Photoinduced Electron Transfer (PET) from First-Principles. Acc Chem Res 2016; 49:1816-24. [PMID: 27575871 DOI: 10.1021/acs.accounts.6b00299] [Citation(s) in RCA: 163] [Impact Index Per Article: 20.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Photoinduced electron transfer (PET) plays relevant roles in many areas of chemistry, including charge separation processes in photovoltaics, natural and artificial photosynthesis, and photoluminescence sensors and switches. As in many other photochemical scenarios, the structural and energetic factors play relevant roles in determining the rates and efficiencies of PET and its competitive photodeactivation processes. Particularly, in the field of fluorescent sensors and switches, intramolecular PET is believed (in many cases without compelling experimental proof) to be responsible of the quench of fluorescence. There is an increasing experimental interest in fluorophore's molecular design and on achieving optimal excitation/emission spectra, excitation coefficients, and fluorescence quantum yields (importantly for bioimaging purposes), but less efforts are devoted to fundamental mechanistic studies. In this Account, I revise the origins of the fluorescence quenching in some of these systems with state-of-the-art quantum chemical tools. These studies go beyond the common strategy of analyzing frontier orbital energy diagrams and performing PET thermodynamics calculations. Instead, the potential energy surfaces (PESs) of the lowest-lying excited states are explored with time-dependent density functional theory (TD-DFT) and complete active space self-consistent field (CASSCF) calculations and the radiative and nonradiative decay rates from the involved excited states are computed from first-principles using a thermal vibration correlation function formalism. With such a strategy, this work reveals the real origins of the fluorescence quenching, herein entitled as dark-state quenching. Dark states (those that do not absorb or emit light) are often elusive to experiments and thus, computational investigations can provide novel insights into the actual photodeactivation mechanisms. The success of the dark-state quenching mechanism is demonstrated for a wide variety of fluorescent probes, including proton, cation and anion targets. Furthermore, this mechanism provides a general picture of the fluorescence quenching which englobes intramolecular charge-transfer (ICT), ratiometric quenching, and those radiationless mechanisms believed to be originated by PET. Finally, this Account provides for the first time a computational protocol to quantitatively estimate this phenomenon and provides the ingredients for the optimal design of fluorescent probes from first principles.
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Affiliation(s)
- Daniel Escudero
- CEISAM UMR CNRS
6230, Université de Nantes, 2 rue de la Houssinière, BP 92208, 44322 Cedex 3 Nantes, France
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17
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Mellerup SK, Rao YL, Amarne H, Wang S. Tuning the Colors of the Dark Isomers of Photochromic Boron Compounds with Fluoride Ions: Four-State Color Switching. Org Lett 2016; 18:4436-9. [DOI: 10.1021/acs.orglett.6b02308] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Soren K. Mellerup
- Department
of Chemistry, Queen’s University, Kingston, Ontario K7L 3N6, Canada
| | - Ying-Li Rao
- Department
of Chemistry, Queen’s University, Kingston, Ontario K7L 3N6, Canada
| | - Hazem Amarne
- Department
of Chemistry, The Hashemite University, P.O. Box 330117, Zarqa, 13133, Jordan
| | - Suning Wang
- Department
of Chemistry, Queen’s University, Kingston, Ontario K7L 3N6, Canada
- Beijing
Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials,
School of Chemistry, Beijing Institute of Technology, Beijing 1000081, P. R. China
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