1
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Petcu AS, Lázaro-Milla C, Alonso JM, Almendros P. Unveiling the Use of 1,1-Bis(triflyl)ethylene as CF 3SO 2CH═CH 2 Source with the Assistance of ( n-Bu) 4NF: Synthesis of 3-[(Trifluoromethyl)sulfonyl]cyclobut-1-enes. Org Lett 2024; 26:4560-4565. [PMID: 38767989 PMCID: PMC11148847 DOI: 10.1021/acs.orglett.4c01514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2024] [Revised: 05/14/2024] [Accepted: 05/17/2024] [Indexed: 05/22/2024]
Abstract
Allylic sulfone-embedded cyclobutenes have been prepared in one pot from alkynes. The carbocycle and the alkenyl sulfone moieties were installed through consecutive bis(triflyl)cyclobutenylation of a triple bond and tetra-n-butylammonium fluoride (TBAF)-assisted hydrodesulfonylation of an allylic bis(sulfone). It is noteworthy that 1,1-bis(triflyl)ethylene acts as a CF3SO2CH═CH2 source for the first time.
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Affiliation(s)
- A. Sonia Petcu
- Instituto
de Química Orgánica General, IQOG, CSIC, Juan de la Cierva 3, 28006 Madrid, Spain
- Grupo
de Lactamas y Heterociclos Bioactivos, Departamento de Química
Orgánica, Unidad Asociada al CSIC, Facultad de Química, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - Carlos Lázaro-Milla
- Grupo
de Lactamas y Heterociclos Bioactivos, Departamento de Química
Orgánica, Unidad Asociada al CSIC, Facultad de Química, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - José M. Alonso
- Grupo
de Lactamas y Heterociclos Bioactivos, Departamento de Química
Orgánica, Unidad Asociada al CSIC, Facultad de Química, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - Pedro Almendros
- Instituto
de Química Orgánica General, IQOG, CSIC, Juan de la Cierva 3, 28006 Madrid, Spain
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2
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Budinská A, Wennemers H. Organocatalytic Synthesis of Triflones Bearing Two Non-Adjacent Stereogenic Centers. Angew Chem Int Ed Engl 2023; 62:e202300537. [PMID: 36847408 DOI: 10.1002/anie.202300537] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 02/07/2023] [Accepted: 02/27/2023] [Indexed: 03/01/2023]
Abstract
Trifluoromethylsulfones (triflones) are useful compounds for synthesis and beyond. Yet, methods to access chiral triflones are scarce. Here, we present a mild and efficient organocatalytic method for the stereoselective synthesis of chiral triflones using α-aryl vinyl triflones, building blocks previously unexplored in asymmetric synthesis. The peptide-catalyzed reaction gives rise to a broad range of γ-triflylaldehydes with two non-adjacent stereogenic centers in high yields and stereoselectivities. A catalyst-controlled stereoselective protonation following a C-C bond formation is key to control over the absolute and relative configuration. Straightforward derivatization of the products into, e.g., disubstituted δ-sultones, γ-lactones, and pyrrolidine heterocycles highlights the synthetic versatility of the products.
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Affiliation(s)
- Alena Budinská
- Laboratory of Organic Chemistry, ETH Zürich, Vladimir-Prelog-Weg 3, 8093, Zürich, Switzerland
| | - Helma Wennemers
- Laboratory of Organic Chemistry, ETH Zürich, Vladimir-Prelog-Weg 3, 8093, Zürich, Switzerland
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3
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Ivanov AI. Modeling the Effect of H-Bonding of Excited Quadrupolar Molecules with a Solvent on Charge Transfer Symmetry Breaking. J Phys Chem B 2022; 126:9038-9046. [DOI: 10.1021/acs.jpcb.2c05984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Anatoly I. Ivanov
- Volgograd State University, University Avenue 100, Volgograd400062, Russia
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4
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Feng Y, Das PJ, Young RM, Brown PJ, Hornick JE, Weber JA, Seale JSW, Stern CL, Wasielewski MR, Stoddart JF. Alkoxy-Substituted Quadrupolar Fluorescent Dyes. J Am Chem Soc 2022; 144:16841-16854. [PMID: 36083184 DOI: 10.1021/jacs.2c04906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Polar and polarizable π-conjugated organic molecules containing push-pull chromophores have been investigated extensively in the past. Identifying unique backbones and building blocks for fluorescent dyes is a timely exercise. Here, we report the synthesis and characterization of a series of fluorescent dyes containing quadrupolar A-D-A constitutions (where A = acceptor and D = donor), which exhibit fluorescence emission at a variety of different wavelengths. We have investigated the effects of different electron-withdrawing groups, located at both termini of a para-terphenylene backbone, by steady-state UV/vis and fluorescence spectroscopy. Pyridine and substituted pyridinium units are also introduced during the construction of the quadrupolar backbones. Depending on the quadrupolarity, fluorescence emission wavelengths cover from 380 to 557 nm. Time-resolved absorption and emission spectroscopy reveal that the photophysical properties of those quadrupolar dyes result from intramolecular charge transfer. One of the dyes we have investigated is a symmetrical box-like tetracationic cyclophane. Its water-soluble tetrachloride, which is non-cytotoxic to cells up to a loading concentration of 1 μM, has been employed in live-cell imaging. When taken up by cells, the tetrachloride emits a green fluorescence emission without any hint of photobleaching or disruption of normal cell behavior. We envision that our design strategy of modifying molecules through the functionalization of the quadrupolar building blocks as chromophores will lead to future generations of fluorescent dyes in which these A-D-A constitutional fragments are incorporated into more complex molecules and polymers for broader photophysical and biological applications.
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Affiliation(s)
- Yuanning Feng
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Partha Jyoti Das
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Ryan M Young
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States.,Institute for Sustainability and Energy at Northwestern, Northwestern University, Evanston, Illinois 60208, United States
| | - Paige J Brown
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States.,Institute for Sustainability and Energy at Northwestern, Northwestern University, Evanston, Illinois 60208, United States
| | - Jessica E Hornick
- Chemistry for Life Processes Institutes, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States.,Department of Molecular Biosciences, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Jacob A Weber
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - James S W Seale
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Charlotte L Stern
- Integrated Molecular Structure Education and Research Center, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Michael R Wasielewski
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States.,Institute for Sustainability and Energy at Northwestern, Northwestern University, Evanston, Illinois 60208, United States
| | - J Fraser Stoddart
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States.,School of Chemistry, University of New South Wales, Sydney 2052, New South Wales, Australia.,Stoddart Institute of Molecular Science, Department of Chemistry, Zhejiang University, Hangzhou 310027, China.,ZJU-Hangzhou Global Scientific and Technological Innovation Center, Hangzhou 311215, China
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5
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Design, photophysical properties, and applications of fluorene-based fluorophores in two-photon fluorescence bioimaging: A review. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C: PHOTOCHEMISTRY REVIEWS 2022. [DOI: 10.1016/j.jphotochemrev.2022.100529] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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6
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Durand N, Amar A, Mhanna R, Akdas-Kiliç H, Soppera O, Malval JP, Boucekkine A, Fillaut JL. Two-Photon Absorption Cooperative Effects within Multi-Dipolar Ruthenium Complexes: The Decisive Influence of Charge Transfers. Molecules 2022; 27:molecules27051493. [PMID: 35268594 PMCID: PMC8912064 DOI: 10.3390/molecules27051493] [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: 01/22/2022] [Revised: 02/15/2022] [Accepted: 02/21/2022] [Indexed: 02/05/2023] Open
Abstract
One- and two-photon characterizations of a series of hetero- and homoleptic [RuL3-n(bpy)n]2+ (n = 0, 1, 2) complexes carrying bipyridine π-extended ligands (L), have been carried out. These π-extended D−π−A−A−π−D-type ligands (L), where the electron donor units (D) are based on diphenylamine, carbazolyl, or fluorenyl units, have been designed to modulate the conjugation extension and the donating effect. Density functional theory calculations were performed in order to rationalize the observed spectra. Calculations show that the electronic structure of the π-extended ligands has a pronounced effect on the composition of HOMO and LUMO and on the metallic contribution to frontier MOs, resulting in strikingly different nonlinear properties. This work demonstrates that ILCT transitions are the keystone of one- and two-photon absorption bands in the studied systems and reveals how much MLCT and LLCT charge transfers play a decisive role on the two-photon properties of both hetero- and homoleptic ruthenium complexes through cooperative or suppressive effects.
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Affiliation(s)
- Nicolas Durand
- Univ. Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) UMR 6226, 35000 Rennes, France; (N.D.); (A.A.); (H.A.-K.)
| | - Anissa Amar
- Univ. Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) UMR 6226, 35000 Rennes, France; (N.D.); (A.A.); (H.A.-K.)
- Laboratoire de Physique et Chimie Quantiques, Faculté des Sciences, Université Mouloud Mammeri de Tizi-Ouzou, Tizi-Ouzou 15000, Algeria
| | - Rana Mhanna
- Institut de Science des Matériaux de Mulhouse CNRS-UMR 7361, Université de Haute Alsace, 15 rue Jean Starcky, 68057 Mulhouse, France; (R.M.); (O.S.); (J.-P.M.)
| | - Huriye Akdas-Kiliç
- Univ. Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) UMR 6226, 35000 Rennes, France; (N.D.); (A.A.); (H.A.-K.)
- Department of Chemistry, Yildiz Technical University, Esenler, Istanbul 34220, Turkey
| | - Olivier Soppera
- Institut de Science des Matériaux de Mulhouse CNRS-UMR 7361, Université de Haute Alsace, 15 rue Jean Starcky, 68057 Mulhouse, France; (R.M.); (O.S.); (J.-P.M.)
| | - Jean-Pierre Malval
- Institut de Science des Matériaux de Mulhouse CNRS-UMR 7361, Université de Haute Alsace, 15 rue Jean Starcky, 68057 Mulhouse, France; (R.M.); (O.S.); (J.-P.M.)
| | - Abdou Boucekkine
- Univ. Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) UMR 6226, 35000 Rennes, France; (N.D.); (A.A.); (H.A.-K.)
- Correspondence: (A.B.); (J.-L.F.)
| | - Jean-Luc Fillaut
- Univ. Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) UMR 6226, 35000 Rennes, France; (N.D.); (A.A.); (H.A.-K.)
- Correspondence: (A.B.); (J.-L.F.)
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7
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Liu Y, Bai S, Du Y, Qi X, Gao H. Expeditious and Efficient
ortho
‐Selective Trifluoromethane‐sulfonylation of Arylhydroxylamines. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202115611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yue Liu
- School of Chemistry and Chemical Engineering Shandong University 27 South Shanda Road Ji'nan 250100, Shandong China
| | - Songlin Bai
- National Institute of Biological Sciences Beijing 102206 China
- Tsinghua Institute of Multidisciplinary Biomedical Research Tsinghua University Beijing 100084 China
| | - Yuanbo Du
- School of Chemistry and Chemical Engineering Shandong University 27 South Shanda Road Ji'nan 250100, Shandong China
| | - Xiangbing Qi
- National Institute of Biological Sciences Beijing 102206 China
- Tsinghua Institute of Multidisciplinary Biomedical Research Tsinghua University Beijing 100084 China
| | - Hongyin Gao
- School of Chemistry and Chemical Engineering Shandong University 27 South Shanda Road Ji'nan 250100, Shandong China
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8
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Antipov IF, Ivanov AI. Effect of Symmetry Breaking in Excited Quadrupole Molecules on Transition Dipole Moment. J Phys Chem B 2021; 125:13778-13788. [PMID: 34894694 DOI: 10.1021/acs.jpcb.1c08666] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Manifestations of charge transfer symmetry breaking in excited quadrupolar molecules in optical spectra are theoretically studied. The molecules are supposed to have π-conjugated structures of A-π-D-π-A or D-π-A-π-D character, where electron acceptors (A) or electron donors (D) are identical. A theory describing the effect of symmetry breaking and solvent fluctuations on the dipole moments of optical transitions associated with absorption by a quadrupolar dye in the ground and excited states, as well as fluorescence, is developed. Simple equations describing the influence of the symmetry breaking extent on the transition dipole moments are found. The orientational solvent fluctuations are predicted to decrease the transition dipole moment of the ground state absorption. The decrease does not exceed 10%. A considerably larger effect of symmetry breaking and the solvent fluctuations on the emission dipole moment is found. Equations describing dependencies of the transition dipole moment associated with excited state absorption on the solvent polarity and the parameters of the dye are derived. The scale of the changes in the transition dipole moments due to symmetry breaking in the excited state are determined. The influence of the polar solvent fluctuations is also taken into account. The theoretical findings are shown to be consistent with the available experimental data.
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Affiliation(s)
- Ivan F Antipov
- Volgograd State University, University Avenue 100, Volgograd 400062, Russia
| | - Anatoly I Ivanov
- Volgograd State University, University Avenue 100, Volgograd 400062, Russia
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9
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Liu Y, Bai S, Du Y, Qi X, Gao H. Expeditious and Efficient ortho-Selective Trifluoromethane-sulfonylation of Arylhydroxylamines. Angew Chem Int Ed Engl 2021; 61:e202115611. [PMID: 34904339 DOI: 10.1002/anie.202115611] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Indexed: 12/14/2022]
Abstract
A metal- and oxidant-free, practical and efficient method for the synthesis of highly versatile and synthetically useful ortho-trifluoromethanesulfonylated anilines from arylhydroxylamines and trifluoromethanesulfinic chloride was developed. This rapid transformation proceeded smoothly with good yields and excellent ortho-selectivity in the absence of any metals or ligands. Mechanistically, the reaction comprised a noncanonical O-trifluoromethanesulfinylation of the arylhydroxylamine, and the subsequent [2,3]-sigmatropic rearrangement to afford ortho-trifluoromethanesulfonylated aniline derivatives. The practical application of this reaction was demonstrated by further conversion into a series of functional molecules under different reaction conditions.
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Affiliation(s)
- Yue Liu
- School of Chemistry and Chemical Engineering, Shandong University, 27 South Shanda Road, Ji'nan, 250100, Shandong, China
| | - Songlin Bai
- National Institute of Biological Sciences, Beijing, 102206, China.,Tsinghua Institute of Multidisciplinary Biomedical Research, Tsinghua University, Beijing, 100084, China
| | - Yuanbo Du
- School of Chemistry and Chemical Engineering, Shandong University, 27 South Shanda Road, Ji'nan, 250100, Shandong, China
| | - Xiangbing Qi
- National Institute of Biological Sciences, Beijing, 102206, China.,Tsinghua Institute of Multidisciplinary Biomedical Research, Tsinghua University, Beijing, 100084, China
| | - Hongyin Gao
- School of Chemistry and Chemical Engineering, Shandong University, 27 South Shanda Road, Ji'nan, 250100, Shandong, China
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10
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Mitsui M, Takakura Y, Hirata K, Niihori Y, Fujiwara Y, Kobayashi K. Excited-State Symmetry Breaking in a Multiple Multipolar Chromophore Probed by Single-Molecule Fluorescence Imaging and Spectroscopy. J Phys Chem B 2021; 125:9950-9959. [PMID: 34455782 DOI: 10.1021/acs.jpcb.1c04915] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Excited-state symmetry breaking (ESB) has attracted much attention because it is often observed in symmetric multipolar chromophores designed as two-photon absorption/emission materials. Herein, we report an ensemble and single-molecule fluorescence imaging and spectroscopy investigation of ESB in hexakis[4-(p-dioctylaminostyryl)phenylethynyl]benzene(DB6), a two-photon absorber possessing a C6-symmetric π-D6 structure (π = hexaethynylbenzene, D = (p-dioctylaminostyryl)phenyl group) consisting of three equivalent D-π-D moieties. Ensemble and single-molecule measurements and theoretical calculations revealed that DB6 undergoes a photoabsorption process with two orthogonal transition dipole moments, whereas it fluoresces with a single transition dipole moment after one- or two-step ESB upon photoexcitation, depending on the environmental polarity. In nonpolar solvents and polymer films, one of the three D-π-D sites becomes planar, and the excited state is localized on this moiety: a [Dδ+-πδ--Dδ+]* quadrupolar state is formed. In polar solvents, the symmetry is further broken within the planarized D-π-D moiety, and the excited state is localized on one of the two D-π sites; i.e., a D-[πδ--Dδ+]* dipolar state is generated. Hence, DB6 can behave like a multichromophore with multiple emission sites in the molecule, which was demonstrated by stepwise photobleaching under photon antibunching conditions.
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Affiliation(s)
- Masaaki Mitsui
- Department of Chemistry, College of Science, Rikkyo University, 3-34-1, Nishiikebukuro, Toshima-ku, Tokyo 171-8501, Japan
| | - Yasushi Takakura
- Department of Chemistry, College of Science, Rikkyo University, 3-34-1, Nishiikebukuro, Toshima-ku, Tokyo 171-8501, Japan
| | - Kazuya Hirata
- Department of Chemistry, College of Science, Rikkyo University, 3-34-1, Nishiikebukuro, Toshima-ku, Tokyo 171-8501, Japan
| | - Yoshiki Niihori
- Department of Chemistry, College of Science, Rikkyo University, 3-34-1, Nishiikebukuro, Toshima-ku, Tokyo 171-8501, Japan
| | - Yutaka Fujiwara
- Department of Chemistry, Faculty of Science, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka 422-8529, Japan
| | - Kenji Kobayashi
- Department of Chemistry, Faculty of Science, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka 422-8529, Japan
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11
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Mo C, Yang M, Cheng Z, Tang X, Yang L, Su R, Li J, Feng J, Fang L, Yang K, Chen Z, Yu D. Octupolar Acrylonitrile-Bridged 2D-Conjugated Polymers Enable Bright Far-Red Emission with Intense Two-Photon Absorption via Alkoxylation Chemistry. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2100955. [PMID: 34319656 DOI: 10.1002/smll.202100955] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 05/20/2021] [Indexed: 06/13/2023]
Abstract
Herein, alkoxylation chemistry is introduced as a "one-stone-three-birds" solution for exploring a new family of highly-fluorescent octupolar 2D-conjugated organic polymers/frameworks (OCOPs/OCOFs) combining far-red emission, high fluorescence quantum yield (QY), and strong two-photon absorption (TPA). Both alkoxy-substituted OCOP and OCOF comprising acrylonitrile-bridged strongly-coupled donor3-(acceptor core) chromophores densely packed in either disordered or ordered forms, exhibit significantly redshifted emission. They produce high QY of 22.2% and 27.8% in tetrahydrofuran, large TPA cross section of 600 and 1124 GM, and 2-3 folds and 15-30 folds that of non-alkoxylate amorphous counterpart respectively. Combined theoretical and experimental studies reveal unique "one-stone-three-birds" role of the alkoxylation in realizing red-shifted-emission, improved QY and TPA enabled by inducing steric hindrance effect for weakened π-π stacking, and triggering p-π conjugation effect for electronically engineering octupolar chromophores, while the crystalline engineering enables enforced coplanarity conformation and improved π-electron delocalization for further improved QY and TPA. The robust and biocompatible pentoxy-substituted polymer can be used not only as metal-free red-emissive phosphor for efficient warm white light-emitting diodes, but also as efficient two-photon fluorescence probes for bio-imaging.
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Affiliation(s)
- Chunshao Mo
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, School of Chemistry, Sun Yat-sen University, Guangzhou, Guangdong Province, 510275, China
| | - Meijia Yang
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, School of Chemistry, Sun Yat-sen University, Guangzhou, Guangdong Province, 510275, China
| | - Zhixue Cheng
- Department of Pediatrics and Department of Allergy, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong Province, 510275, China
| | - Xikang Tang
- Department of Pediatrics and Department of Allergy, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong Province, 510275, China
| | - Lifen Yang
- Department of Pediatrics and Department of Allergy, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong Province, 510275, China
| | - Ruonan Su
- Department of Pediatrics and Department of Allergy, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong Province, 510275, China
| | - Jing Li
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, School of Chemistry, Sun Yat-sen University, Guangzhou, Guangdong Province, 510275, China
| | - Jiangshan Feng
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, School of Chemistry, Sun Yat-sen University, Guangzhou, Guangdong Province, 510275, China
| | - Long Fang
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, School of Chemistry, Sun Yat-sen University, Guangzhou, Guangdong Province, 510275, China
| | - Kexin Yang
- Department of Pediatrics and Department of Allergy, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong Province, 510275, China
| | - Zhuanggui Chen
- Department of Pediatrics and Department of Allergy, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong Province, 510275, China
| | - Dingshan Yu
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, School of Chemistry, Sun Yat-sen University, Guangzhou, Guangdong Province, 510275, China
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12
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Bondarev SL, Raichenok TF, Tikhomirov SA, Kozlov NG, Mikhailova TV, Ivanov AI. Symmetry Breaking in an Excited Quadrupolar Acridine-Dione Derivative Driven by Hydrogen Bonding. J Phys Chem B 2021; 125:8117-8124. [PMID: 34266232 DOI: 10.1021/acs.jpcb.1c03745] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An acridine-dione derivative (3,3,11,11-tetramethyl-8,16-diphenyl-3,4,8,10,11,12,13,16-octahydroacridino[4,3-c]acridine-1.9(2H,5H)dion) with quadrupolar motif has been synthesized and its stationary and transient spectra have been measured. Stationary absorption and fluorescence spectra as well as nonstationary spectra show no signs of symmetry breaking (SB) in aprotic solvents, even of high polarity. The specific features of SB are revealed in alcohol solvents through a considerable red shift of stationary fluorescence spectra and the appearance of a new excited state absorption band in transient absorption spectra. SB is due to the formation of asymmetric strong hydrogen bonds, mainly on one side of the molecule. An unexpected regularity of symmetry breaking is found in mixtures of aprotic dimethylformamide and protic methanol, where methanol acts as a fluorescence quencher. It is revealed that there is no quenching as long as the methanol concentration is less than the critical value of 9 M. This leads to the conclusion that SB in such mixtures is possible only if the concentration of the protic solvent exceeds a certain threshold value.
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Affiliation(s)
- Stanislav L Bondarev
- B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, Prospect Nezavisimosti 68, Minsk BY-220072, Republic of Belarus
| | - Tamara F Raichenok
- B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, Prospect Nezavisimosti 68, Minsk BY-220072, Republic of Belarus
| | - Sergei A Tikhomirov
- B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, Prospect Nezavisimosti 68, Minsk BY-220072, Republic of Belarus
| | - Nikolai G Kozlov
- Institute of Physical Organic Chemistry, National Academy of Sciences of Belarus, Surganov str. 13, Minsk BY-220072, Republic of Belarus
| | | | - Anatoly I Ivanov
- Volgograd State University, University Avenue 100, Volgograd 400062, Russia
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13
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Nazarov AE, Ivanov AI. Nonstationary Theory of Excited State Charge Transfer Symmetry Breaking Driven by Polar Solvent. J Phys Chem B 2020; 124:10787-10801. [DOI: 10.1021/acs.jpcb.0c07612] [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]
Affiliation(s)
- Alexey E. Nazarov
- Volgograd State University, University Avenue 100, Volgograd 400062, Russia
| | - Anatoly I. Ivanov
- Volgograd State University, University Avenue 100, Volgograd 400062, Russia
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14
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Nazarov AE, Ivanov AI. Modeling the IR Spectra of Excited Quadrupole Molecules with Broken Symmetry in Polar Solvents. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2020. [DOI: 10.1134/s003602442008021x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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15
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Łukasiewicz ŁG, Rammo M, Stark C, Krzeszewski M, Jacquemin D, Rebane A, Gryko DT. Ground‐ and Excited‐State Symmetry Breaking and Solvatofluorochromism in Centrosymmetric Pyrrolo[3,2‐
b
]pyrroles Possessing two Nitro Groups. CHEMPHOTOCHEM 2020. [DOI: 10.1002/cptc.202000013] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Łukasz G. Łukasiewicz
- Institute of Organic ChemistryPolish Academy of Sciences Kasprzaka 44–52 01-224 Warsaw Poland
| | - Matt Rammo
- National Institute of Chemical Physics and Biophysics Akadeemia tee 23 12618 Tallinn Estonia
| | - Charlie Stark
- National Institute of Chemical Physics and Biophysics Akadeemia tee 23 12618 Tallinn Estonia
| | - Maciej Krzeszewski
- Institute of Organic ChemistryPolish Academy of Sciences Kasprzaka 44–52 01-224 Warsaw Poland
| | - Denis Jacquemin
- CEISAM laboratory – UMR 6230University of Nantes 2, rue de la Houssinière 44322 Nantes France
| | - Aleksander Rebane
- National Institute of Chemical Physics and Biophysics Akadeemia tee 23 12618 Tallinn Estonia
- Department of PhysicsMontana State University Bozeman, MT 59717 USA
| | - Daniel T. Gryko
- Institute of Organic ChemistryPolish Academy of Sciences Kasprzaka 44–52 01-224 Warsaw Poland
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16
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Li L, Xu Y, Chen Y, Zheng J, Zhang J, Li R, Wan H, Yin J, Yuan Z, Chen H. A family of push-pull bio-probes for tracking lipid droplets in living cells with the detection of heterogeneity and polarity. Anal Chim Acta 2020; 1096:166-173. [DOI: 10.1016/j.aca.2019.10.061] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Revised: 10/23/2019] [Accepted: 10/27/2019] [Indexed: 01/04/2023]
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17
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Zhou X, Hu D, He X, Li Y, Chu Y, She Y. Practical and efficient synthesis of aryl trifluoromethyl sulfones from arylsulfonyl chlorides with Umemoto’s reagent II. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2019.151465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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18
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Griesbeck S, Michail E, Rauch F, Ogasawara H, Wang C, Sato Y, Edkins RM, Zhang Z, Taki M, Lambert C, Yamaguchi S, Marder TB. The Effect of Branching on the One- and Two-Photon Absorption, Cell Viability, and Localization of Cationic Triarylborane Chromophores with Dipolar versus Octupolar Charge Distributions for Cellular Imaging. Chemistry 2019; 25:13164-13175. [PMID: 31322301 PMCID: PMC6857003 DOI: 10.1002/chem.201902461] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Indexed: 12/04/2022]
Abstract
Two different chromophores, namely a dipolar and an octupolar system, were prepared and their linear and nonlinear optical properties as well as their bioimaging capabilities were compared. Both contain triphenylamine as the donor and a triarylborane as the acceptor, the latter modified with cationic trimethylammonio groups to provide solubility in aqueous media. The octupolar system exhibits a much higher two-photon brightness, and also better cell viability and enhanced selectivity for lysosomes compared with the dipolar chromophore. Furthermore, both dyes were applied in two-photon excited fluorescence (TPEF) live-cell imaging.
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Affiliation(s)
- Stefanie Griesbeck
- Institut für Anorganische Chemie, and Institute for Sustainable Chemistry, & Catalysis with BoronJulius-Maximilians-Universität Würzburg97074WürzburgGermany
| | - Evripidis Michail
- Institut für Organische ChemieJulius-Maximilians-Universität Würzburg97074WürzburgGermany
| | - Florian Rauch
- Institut für Anorganische Chemie, and Institute for Sustainable Chemistry, & Catalysis with BoronJulius-Maximilians-Universität Würzburg97074WürzburgGermany
| | - Hiroaki Ogasawara
- Institute of Transformative Bio-MoleculesNagoya UniversityNagoyaJapan
| | - Chenguang Wang
- Institute of Transformative Bio-MoleculesNagoya UniversityNagoyaJapan
| | - Yoshikatsu Sato
- Institute of Transformative Bio-MoleculesNagoya UniversityNagoyaJapan
| | - Robert M. Edkins
- Institut für Anorganische Chemie, and Institute for Sustainable Chemistry, & Catalysis with BoronJulius-Maximilians-Universität Würzburg97074WürzburgGermany
- Department of Pure & Applied ChemistryUniversity of StrathclydeGlasgowUK
| | - Zuolun Zhang
- Institut für Anorganische Chemie, and Institute for Sustainable Chemistry, & Catalysis with BoronJulius-Maximilians-Universität Würzburg97074WürzburgGermany
- State Key Laboratory of Supramolecular Structure and MaterialsCollege of ChemistryJilin UniversityQianjin StreetChangchunP. R. China
| | - Masayasu Taki
- Institute of Transformative Bio-MoleculesNagoya UniversityNagoyaJapan
| | - Christoph Lambert
- Institut für Organische ChemieJulius-Maximilians-Universität Würzburg97074WürzburgGermany
| | | | - Todd B. Marder
- Institut für Anorganische Chemie, and Institute for Sustainable Chemistry, & Catalysis with BoronJulius-Maximilians-Universität Würzburg97074WürzburgGermany
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19
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Ivanov AI, Tkachev VG. Exact solution of three-level model of excited state electron transfer symmetry breaking in quadrupolar molecules. J Chem Phys 2019; 151:124309. [DOI: 10.1063/1.5116015] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Affiliation(s)
- Anatoly I. Ivanov
- Volgograd State University, University Avenue 100, Volgograd 400062, Russia
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20
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Letrun R, Lang B, Yushchenko O, Wilcken R, Svechkarev D, Kolodieznyi D, Riedle E, Vauthey E. Excited-state dynamics of a molecular dyad with two orthogonally-oriented fluorophores. Phys Chem Chem Phys 2018; 20:30219-30230. [PMID: 30489576 DOI: 10.1039/c8cp05356a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The excited-state dynamics of a T-shaped bichromophoric molecule, consisting of two strong fluorophores, diphenyloxazole and diphenylpyrazoline, directly linked in an orthogonal geometry, was investigated. Despite the weak coupling ensured by this geometry and confirmed by the electronic absorption spectra, this dyad exhibits only weak fluorescence in both apolar and polar solvents, with fluorescence lifetimes ranging from 200 ps in CHX to 10 ps in ACN. Ultrafast spectroscopic measurements reveal that the fluorescence quenching in polar solvents is due to the population of a charge-separated state. In non-polar solvents, this process is energetically not feasible, and a quenching due to an efficient intersystem crossing (ISC) to the triplet manifold is proposed, based on quantum-chemical calculations. This process occurs via the spin-orbit charge-transfer (SOCT) ISC mechanism, which is enabled by the charge-transfer character acquired by the S1 state of the dyad upon structural relaxation and by the orthogonal arrangement of the molecular orbitals involved in the transition. The same mechanism is proposed to explain why the recombination of the charge-separated state is faster in medium than in highly polar solvents, as well as to account for the fast decay of the lowest triplet state to the ground state.
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Affiliation(s)
- Romain Letrun
- Department of Physical Chemistry, University of Geneva, 30 Quai Ernest-Ansermet, CH-1211 Geneva 4, Switzerland.
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21
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22
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Klikar M, Seintis K, Polyzos I, Pytela O, Mikysek T, Almonasy N, Fakis M, Bureš F. Star-Shaped Push-Pull Molecules with a Varied Number of Peripheral Acceptors: An Insight into Their Optoelectronic Features. CHEMPHOTOCHEM 2018. [DOI: 10.1002/cptc.201800051] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Milan Klikar
- Institute of Organic Chemistry and Technology; Faculty of Chemical Technology, University of Pardubice; Studentská 573 Pardubice 532 10 Czech Republic
| | - Kostas Seintis
- Department of Physics; University of Patras; GR-26504 Patras Greece
| | - Ioannis Polyzos
- Department of Physics; University of Patras; GR-26504 Patras Greece
- Foundation of Research and Technology Hellas; Institute of Chemical Engineering Sciences (FORTH/ICE-HT); Stadiou Str. P.O. Box 1414 Rio-Patras Greece
| | - Oldřich Pytela
- Institute of Organic Chemistry and Technology; Faculty of Chemical Technology, University of Pardubice; Studentská 573 Pardubice 532 10 Czech Republic
| | - Tomáš Mikysek
- Department of Analytical Chemistry, Faculty of Chemical Technology; University of Pardubice; Studentská 573 Pardubice 53210 Czech Republic
| | - Numan Almonasy
- Institute of Organic Chemistry and Technology; Faculty of Chemical Technology, University of Pardubice; Studentská 573 Pardubice 532 10 Czech Republic
| | - Mihalis Fakis
- Department of Physics; University of Patras; GR-26504 Patras Greece
| | - Filip Bureš
- Institute of Organic Chemistry and Technology; Faculty of Chemical Technology, University of Pardubice; Studentská 573 Pardubice 532 10 Czech Republic
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23
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Abstract
Solvatochromic compounds attracted more and more attentions in the application of fluorescent probe, indicator, chromogenic reagent, molecular recognition field and so on. Although sovatochromic effects have been discovered for more than a century, they are still difficult to understand and even more difficult to predict. This review introduced organometallic complexes and organic compounds of solvatochromic materials and highlight the latest progress in recent years, and the molecular structure design and solvatochromic properties are discussed.
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24
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Sumii Y, Sugita Y, Tokunaga E, Shibata N. Synthesis of Aryl Triflones through the Trifluoromethanesulfonylation of Benzynes. ChemistryOpen 2018; 7:204-211. [PMID: 29497592 PMCID: PMC5827650 DOI: 10.1002/open.201700204] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Indexed: 11/05/2022] Open
Abstract
The direct synthesis of aryl triflones, that is, trifluoromethanesulfonyl arenes, was achieved through the trifluoromethanesulfonylation of benzynes. The trifluoromethanesulfonyl group, one of the fluorinated functional groups, is a highly electron-negative and mild lipophilic substituent. Aryl triflones have high potential in the synthesis of bioactive compounds and specialty materials. The treatment of 2-(trimethylsilyl)aryl trifluoromethanesulfonates with cesium fluoride in the presence of 15-crown-5 generated benzynes, which reacted with sodium trifluoromethanesulfinate followed by protonation with tBuOH under heating conditions, provided aryl triflones in moderated to good yields. Both symmetrical and unsymmetrical triflones were nicely accessed under the same reaction conditions. Interestingly, the trifluoromethanesulfonylation of unsymmetrical benzyne precursors proceeded smoothly to furnish corresponding aryl triflones in good yields with good to high regioselectivities. The balance of polarization of electric charge as well as steric hindrance of the benzyne intermediates are central factors to control the outcome of regioselectivity.
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Affiliation(s)
- Yuji Sumii
- Department of Nanopharmaceutical Sciences and Department of Life Science and Applied ChemistryNagoya Institute of TechnologyGokiso-cho, Showa-kuNagoya466–8555Japan
| | - Yutaka Sugita
- Department of Nanopharmaceutical Sciences and Department of Life Science and Applied ChemistryNagoya Institute of TechnologyGokiso-cho, Showa-kuNagoya466–8555Japan
| | - Etsuko Tokunaga
- Department of Nanopharmaceutical Sciences and Department of Life Science and Applied ChemistryNagoya Institute of TechnologyGokiso-cho, Showa-kuNagoya466–8555Japan
| | - Norio Shibata
- Department of Nanopharmaceutical Sciences and Department of Life Science and Applied ChemistryNagoya Institute of TechnologyGokiso-cho, Showa-kuNagoya466–8555Japan
- Institute of Advanced Fluorine-Containing MaterialsZhejiang Normal University688 Yingbin Avenue321004JinhuaChina
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25
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Beckwith JS, Rosspeintner A, Licari G, Lunzer M, Holzer B, Fröhlich J, Vauthey E. Specific Monitoring of Excited-State Symmetry Breaking by Femtosecond Broadband Fluorescence Upconversion Spectroscopy. J Phys Chem Lett 2017; 8:5878-5883. [PMID: 29144140 DOI: 10.1021/acs.jpclett.7b02754] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Most quadrupolar molecules designed for large two-photon absorption cross section have been shown to undergo symmetry breaking upon excitation to the S1 state. This was originally deduced from their strong fluorescence solvatochromism and later visualized in real time using transient infrared spectroscopy. For molecules not containing clear IR marker modes, however, a specific real-time observation of the symmetry breaking process remains lacking. Here we show that this process can be resolved using broadband fluorescence upconversion spectroscopy by monitoring the instantaneous emission transition dipole moment. This approach is illustrated with measurements performed on two quadrupolar molecules, with only one of them undergoing excited-state symmetry breaking in polar solvents.
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Affiliation(s)
- Joseph S Beckwith
- Physical Chemistry Department, University of Geneva , Quai Ernest Ansermet 30, CH-1211 Geneva, Switzerland
| | - Arnulf Rosspeintner
- Physical Chemistry Department, University of Geneva , Quai Ernest Ansermet 30, CH-1211 Geneva, Switzerland
| | - Giuseppe Licari
- Physical Chemistry Department, University of Geneva , Quai Ernest Ansermet 30, CH-1211 Geneva, Switzerland
| | - Markus Lunzer
- Institute of Applied Synthetic Chemistry, TU Wien , Getreidemarkt 9/163OC, A-1060 Vienna, Austria
| | - Brigitte Holzer
- Institute of Applied Synthetic Chemistry, TU Wien , Getreidemarkt 9/163OC, A-1060 Vienna, Austria
| | - Johannes Fröhlich
- Institute of Applied Synthetic Chemistry, TU Wien , Getreidemarkt 9/163OC, A-1060 Vienna, Austria
| | - Eric Vauthey
- Physical Chemistry Department, University of Geneva , Quai Ernest Ansermet 30, CH-1211 Geneva, Switzerland
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26
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Miller DR, Jarrett JW, Hassan AM, Dunn AK. Deep Tissue Imaging with Multiphoton Fluorescence Microscopy. CURRENT OPINION IN BIOMEDICAL ENGINEERING 2017; 4:32-39. [PMID: 29335679 PMCID: PMC5766275 DOI: 10.1016/j.cobme.2017.09.004] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
We present a review of imaging deep-tissue structures with multiphoton microscopy. We examine the effects of light scattering and absorption due to the optical properties of biological sample and identify 1,300 nm and 1,700 nm as ideal excitation wavelengths. We summarize the availability of fluorophores for multiphoton microscopy as well as ultrafast laser sources to excite available fluorophores. Lastly, we discuss the applications of multiphoton microscopy for neuroscience.
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Affiliation(s)
- David R Miller
- Department of Biomedical Engineering, The University of Texas at Austin, 107 W. Dean Keeton C0800, Austin, TX 78712, USA
| | - Jeremy W Jarrett
- Department of Biomedical Engineering, The University of Texas at Austin, 107 W. Dean Keeton C0800, Austin, TX 78712, USA
| | - Ahmed M Hassan
- Department of Biomedical Engineering, The University of Texas at Austin, 107 W. Dean Keeton C0800, Austin, TX 78712, USA
| | - Andrew K Dunn
- Department of Biomedical Engineering, The University of Texas at Austin, 107 W. Dean Keeton C0800, Austin, TX 78712, USA
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27
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Enriquez-Cabrera A, Lacroix PG, Sasaki I, Mallet-Ladeira S, Farfán N, Barba-Barba RM, Ramos-Ortiz G, Malfant I. Comparison of Carbazole and Fluorene Donating Effects on the Two-Photon Absorption and Nitric Oxide Photorelease Capabilities of a Ruthenium-Nitrosyl Complex. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700895] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Alejandro Enriquez-Cabrera
- CNRS; Laboratoire de Chimie de Coordination (LCC); 205 route de Narbonne, BP44099 31077 Toulouse Cedex 4 France
- Facultad de Quimica; Departamento de Quimica Orgánica; Universidad Nacional Autónoma de México; 04510 México D.F. México
| | - Pascal G. Lacroix
- CNRS; Laboratoire de Chimie de Coordination (LCC); 205 route de Narbonne, BP44099 31077 Toulouse Cedex 4 France
| | - Isabelle Sasaki
- CNRS; Laboratoire de Chimie de Coordination (LCC); 205 route de Narbonne, BP44099 31077 Toulouse Cedex 4 France
| | - Sonia Mallet-Ladeira
- CNRS; Laboratoire de Chimie de Coordination (LCC); 205 route de Narbonne, BP44099 31077 Toulouse Cedex 4 France
| | - Norberto Farfán
- Facultad de Quimica; Departamento de Quimica Orgánica; Universidad Nacional Autónoma de México; 04510 México D.F. México
| | | | - Gabriel Ramos-Ortiz
- Centro de Investigaciones en Óptica (CIO), A.P. 1-948; 37000 León Gto México
| | - Isabelle Malfant
- CNRS; Laboratoire de Chimie de Coordination (LCC); 205 route de Narbonne, BP44099 31077 Toulouse Cedex 4 France
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28
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Das P, Shibata N. Electrophilic Triflyl-arylation and Triflyl-pyridylation by Unsymmetrical Aryl/Pyridyl-λ 3-iodonium Salts: Synthesis of Aryl and Pyridyl Triflones. J Org Chem 2017; 82:11915-11924. [PMID: 28840726 DOI: 10.1021/acs.joc.7b01690] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Unsymmetrical diaryl-λ3-iodonium salts containing aryl triflone (Ar-SO2CF3) were designed and synthesized. X-ray crystal structure analysis of the salt indicated a T-shaped geometry at the iodine atom. The salts were found to be powerful electrophilic reagents for triflyl-arylation of C-, N-, and O-centered nucleophiles under mild conditions. Electrophilic transfer of pyridine triflone (Py-SO2CF3) to nucleophiles was also realized by the use of corresponding triflylpyridyl-aryl-λ3-iodonium salts. Selection of auxiliaries (dummy ligands) of unsymmetrical diaryl-λ3-iodonium salts is crucial for this transformation.
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Affiliation(s)
- Prajwalita Das
- Department of Nanopharmaceutical Sciences, Department of Life Science and Applied Chemistry, Nagoya Institute of Technology , Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan
| | - Norio Shibata
- Department of Nanopharmaceutical Sciences, Department of Life Science and Applied Chemistry, Nagoya Institute of Technology , Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan
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29
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Łukasiewicz ŁG, Ryu HG, Mikhaylov A, Azarias C, Banasiewicz M, Kozankiewicz B, Ahn KH, Jacquemin D, Rebane A, Gryko DT. Symmetry Breaking in Pyrrolo[3,2-b]pyrroles: Synthesis, Solvatofluorochromism and Two-photon Absorption. Chem Asian J 2017; 12:1736-1748. [PMID: 28398672 DOI: 10.1002/asia.201700159] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Revised: 04/10/2017] [Indexed: 12/22/2022]
Abstract
Five centrosymmetric and one dipolar pyrrolo[3,2-b]pyrroles, possessing either two or one strongly electron-withdrawing nitro group have been synthesized in a straightforward manner from simple building blocks. For the symmetric compounds, the nitroaryl groups induced spontaneous breaking of inversion symmetry in the excited state, thereby leading to large solvatofluorochromism. To study the origin of this effect, the series employed peripheral structural motifs that control the degree of conjugation via altering of dihedral angle between the 4-nitrophenyl moiety and the electron-rich core. We observed that for compounds with a larger dihedral angle, the fluorescence quantum yield decreased quickly when exposed to even moderately polar solvents. Reducing the dihedral angle (i.e., placing the nitrobenzene moiety in the same plane as the rest of the molecule) moderated the dependence on solvent polarity so that the dye exhibited significant emission, even in THF. To investigate at what stage the symmetry breaking occurs, we measured two-photon absorption (2PA) spectra and 2PA cross-sections (σ2PA ) for all six compounds. The 2PA transition profile of the dipolar pyrrolo[3,2-b]pyrrole, followed the corresponding one-photon absorption (1PA) spectrum, which provided an estimate of the change of the permanent electric dipole upon transition, ≈18 D. The nominally symmetric compounds displayed an allowed 2PA transition in the wavelength range of 700-900 nm. The expansion via a triple bond resulted in the largest peak value, σ2PA =770 GM, whereas altering the dihedral angle had no effect other than reducing the peak value two- or even three-fold. In the S0 →S1 transition region, the symmetric structures also showed a partial overlap between 2PA and 1PA transitions in the long-wavelength wing of the band, from which a tentative, relatively small dipole moment change, 2-7 D, was deduced, thus suggesting that some small symmetry breaking may be possible in the ground state, even before major symmetry breaking occurs in the excited state.
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Affiliation(s)
- Łukasz G Łukasiewicz
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44-52, 01-224, Warsaw, Poland
| | - Hye Gun Ryu
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44-52, 01-224, Warsaw, Poland.,Department of Chemistry, POSTECH, 77 Cheongam-Ro, Nam-Gu, Pohang, Gyungbuk, 37673, Korea
| | | | - Cloé Azarias
- CEISAM laboratory-UMR 6230, University of Nantes, 2, rue de la Houssinière, 44322, Nantes, France
| | | | | | - Kyo Han Ahn
- Department of Chemistry, POSTECH, 77 Cheongam-Ro, Nam-Gu, Pohang, Gyungbuk, 37673, Korea
| | - Denis Jacquemin
- CEISAM laboratory-UMR 6230, University of Nantes, 2, rue de la Houssinière, 44322, Nantes, France.,Institut Universitaire de France, 1, rue Descartes, 75231, Paris Cedex 05, France
| | - Aleksander Rebane
- Department of Physics, Montana State University, Bozeman, MT, 59717, USA.,National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, 12618, Tallinn, Estonia
| | - Daniel T Gryko
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44-52, 01-224, Warsaw, Poland
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30
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Ivanov AI, Dereka B, Vauthey E. A simple model of solvent-induced symmetry-breaking charge transfer in excited quadrupolar molecules. J Chem Phys 2017; 146:164306. [DOI: 10.1063/1.4982067] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Affiliation(s)
- Anatoly I. Ivanov
- Volgograd State University, University Avenue 100, Volgograd 400062, Russia
| | - Bogdan Dereka
- Department of Physical Chemistry, University of Geneva, 30 Quai Ernest-Ansermet, CH-1211 Geneva 4, Switzerland
| | - Eric Vauthey
- Department of Physical Chemistry, University of Geneva, 30 Quai Ernest-Ansermet, CH-1211 Geneva 4, Switzerland
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31
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Enriquez-Cabrera A, Sasaki I, Bukhanko V, Tassé M, Mallet-Ladeira S, Lacroix PG, Barba-Barba RM, Ramos-Ortiz G, Farfán N, Voitenko Z, Malfant I. Replacing Two Chlorido Ligands by a Bipyridine Ligand in Ruthenium Nitrosyl Complexes with NO-Release Capabilities: A Comparative Study. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201601387] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Alejandro Enriquez-Cabrera
- CNRS; Laboratoire de Chimie de Coordination (LCC); 205 route de Narbonne, BP44099 31077 Toulouse Cedex 4 France
- Facultad de Química; Departamento de Química Orgánica; Universidad Nacional Autónoma de México; 04510 México D.F. México
| | - Isabelle Sasaki
- CNRS; Laboratoire de Chimie de Coordination (LCC); 205 route de Narbonne, BP44099 31077 Toulouse Cedex 4 France
| | - Valerii Bukhanko
- CNRS; Laboratoire de Chimie de Coordination (LCC); 205 route de Narbonne, BP44099 31077 Toulouse Cedex 4 France
| | - Marine Tassé
- CNRS; Laboratoire de Chimie de Coordination (LCC); 205 route de Narbonne, BP44099 31077 Toulouse Cedex 4 France
| | - Sonia Mallet-Ladeira
- CNRS; Laboratoire de Chimie de Coordination (LCC); 205 route de Narbonne, BP44099 31077 Toulouse Cedex 4 France
| | - Pascal G. Lacroix
- CNRS; Laboratoire de Chimie de Coordination (LCC); 205 route de Narbonne, BP44099 31077 Toulouse Cedex 4 France
| | | | | | - Norberto Farfán
- Facultad de Química; Departamento de Química Orgánica; Universidad Nacional Autónoma de México; 04510 México D.F. México
| | - Zoia Voitenko
- Department of Chemistry; Taras Shevchenko National University of Kyiv; Volodymyrska Street, 64/13 01601 Kyiv Ukraine
| | - Isabelle Malfant
- CNRS; Laboratoire de Chimie de Coordination (LCC); 205 route de Narbonne, BP44099 31077 Toulouse Cedex 4 France
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32
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Ghosh S, Mitra AK, Pal U, Basu S, Saha C. Evidence of two structurally related solvatochromic probes complexed with β-cyclodextrin by using spectroscopic methods. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2016.10.097] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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33
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Zhao X, Huang Y, Qing FL, Xu XH. Synthesis of aryl triflones by insertion of arynes into C–SO2CF3 bonds. RSC Adv 2017. [DOI: 10.1039/c6ra26429h] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
A new approach toward the synthesis of aryl triflones was achieved by the formal insertion of arynes into C–SO2CF3 bonds.
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Affiliation(s)
- Xian Zhao
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
- China
| | - Yangen Huang
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
- China
| | - Feng-Ling Qing
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
- China
| | - Xiu-Hua Xu
- Key Laboratory of Organofluorine Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Science
- Shanghai 200032
- China
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34
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Medishetty R, Zaręba JK, Mayer D, Samoć M, Fischer RA. Nonlinear optical properties, upconversion and lasing in metal–organic frameworks. Chem Soc Rev 2017. [DOI: 10.1039/c7cs00162b] [Citation(s) in RCA: 387] [Impact Index Per Article: 55.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The building block modular approach that lies behind coordination polymers (CPs) and metal–organic frameworks (MOFs) results not only in a plethora of materials that can be obtained but also in a vast array of nonlinear optical properties that could be aimed at.
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Affiliation(s)
- Raghavender Medishetty
- Chair for Inorganic and Metal-Organic Chemistry
- Technische Universität München
- D-85747 Garching
- Germany
| | - Jan K. Zaręba
- Advanced Materials Engineering and Modelling Group
- Faculty of Chemistry
- Wrocław University of Science and Technology
- 50-370 Wrocław
- Poland
| | - David Mayer
- Chair for Inorganic and Metal-Organic Chemistry
- Technische Universität München
- D-85747 Garching
- Germany
| | - Marek Samoć
- Advanced Materials Engineering and Modelling Group
- Faculty of Chemistry
- Wrocław University of Science and Technology
- 50-370 Wrocław
- Poland
| | - Roland A. Fischer
- Chair for Inorganic and Metal-Organic Chemistry
- Technische Universität München
- D-85747 Garching
- Germany
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35
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Seintis K, Agathangelou D, Cvejn D, Almonasy N, Bureš F, Giannetas V, Fakis M. Femtosecond to nanosecond studies of octupolar molecules and their quadrupolar and dipolar analogues. Phys Chem Chem Phys 2017; 19:16485-16497. [DOI: 10.1039/c7cp01463e] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The fs–ps anisotropy dynamics of octupolar, quadrupolar and dipolar molecules with different π-bridges.
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Affiliation(s)
- K. Seintis
- Department of Physics
- University of Patras
- Patras
- Greece
| | | | - D. Cvejn
- Institute of Organic Chemistry and Technology
- Faculty of Chemical Technology
- University of Pardubice
- Pardubice
- Czech Republic
| | - N. Almonasy
- Institute of Organic Chemistry and Technology
- Faculty of Chemical Technology
- University of Pardubice
- Pardubice
- Czech Republic
| | - F. Bureš
- Institute of Organic Chemistry and Technology
- Faculty of Chemical Technology
- University of Pardubice
- Pardubice
- Czech Republic
| | - V. Giannetas
- Department of Physics
- University of Patras
- Patras
- Greece
| | - M. Fakis
- Department of Physics
- University of Patras
- Patras
- Greece
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36
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Purc A, Koszarna B, Iachina I, Friese DH, Tasior M, Sobczyk K, Pędziński T, Brewer J, Gryko DT. The impact of interplay between electronic and steric effects on the synthesis and the linear and non-linear optical properties of diketopyrrolopyrrole bearing benzofuran moieties. Org Chem Front 2017. [DOI: 10.1039/c6qo00869k] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Benzofuran has been proven to be the versatile substituent for tuning the optics of diketopyrrolopyrroles.
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Affiliation(s)
- Anna Purc
- Institute of Organic Chemistry
- Polish Academy of Sciences
- 01-224 Warsaw
- Poland
| | - Beata Koszarna
- Institute of Organic Chemistry
- Polish Academy of Sciences
- 01-224 Warsaw
- Poland
| | - Irina Iachina
- Department of Biochemistry and Molecular Biology
- University of Southern Denmark
- Odense 200-701
- Denmark
| | - Daniel H. Friese
- Universitetet i Tromsø - Norges Arktiske Universitet
- Centre for Theoretical and Computational Chemistry
- Tromsø
- Norway
| | - Mariusz Tasior
- Institute of Organic Chemistry
- Polish Academy of Sciences
- 01-224 Warsaw
- Poland
| | - Krzysztof Sobczyk
- Institute of Organic Chemistry
- Polish Academy of Sciences
- 01-224 Warsaw
- Poland
| | | | - Jonathan Brewer
- Department of Biochemistry and Molecular Biology
- University of Southern Denmark
- Odense 200-701
- Denmark
| | - Daniel T. Gryko
- Institute of Organic Chemistry
- Polish Academy of Sciences
- 01-224 Warsaw
- Poland
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37
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Krzeszewski M, Kodama T, Espinoza EM, Vullev VI, Kubo T, Gryko DT. Nonplanar Butterfly-Shaped π-Expanded Pyrrolopyrroles. Chemistry 2016; 22:16478-16488. [PMID: 27659591 DOI: 10.1002/chem.201603282] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2016] [Indexed: 12/11/2022]
Abstract
Large aza-analogues of curved polycyclic aromatic hydrocarbons with a double-helicene structure present unique features for molecular photonics. We present the preparation and characterization of three such structures. The synthesis of these heterocyclic nanographenes involves only a few high-yield steps that use readily available starting materials. X-ray analysis revealed that each of these new dyes has three conformational isomers: one diastereoisomer in a meso form and two enantiomers in twisted forms [(P,P)] and [(M,M)]. The low energy barriers between the conformers, however, prevent their separation by using chiral HPLC, and the NMR spectra show only one set of signals for each of these curved compounds. Density functional theory (DFT) calculations quantify the small energy difference and the small energy barriers between the chiral and meso forms, which fully supports the experimental results. Their optical absorption lacks any sensitivity to the solvent environment, whereas their fluorescence features exhibit pronounced solvatochromism. This rarely observed solvatofluorochromism of centrosymmetric molecules without either electron-withdrawing groups or -donating substituents was probed by using time-resolved spectroscopy. These studies suggest that, similar to 9,9'-bianthryl, the nonpolar locally excited state shows negligible solvatochromism, whereas the charge-transfer state is sensitive to solvent polarity.
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Affiliation(s)
- Maciej Krzeszewski
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44-52, 01-224, Warsaw, Poland.,Department of Bioengineering, Department of Biochemistry, Department of Chemistry, and Materials Science and Engineering Program, University of California, Riverside, California, 92521, USA
| | - Takuya Kodama
- Graduate School of Science, Osaka University, Toyonaka, Osaka, 560-0043, Japan
| | - Eli M Espinoza
- Department of Bioengineering, Department of Biochemistry, Department of Chemistry, and Materials Science and Engineering Program, University of California, Riverside, California, 92521, USA
| | - Valentine I Vullev
- Department of Bioengineering, Department of Biochemistry, Department of Chemistry, and Materials Science and Engineering Program, University of California, Riverside, California, 92521, USA.
| | - Takashi Kubo
- Graduate School of Science, Osaka University, Toyonaka, Osaka, 560-0043, Japan.
| | - Daniel T Gryko
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44-52, 01-224, Warsaw, Poland.
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38
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Hua LN, Li H, Qing FL, Huang Y, Xu XH. Iodine-mediated regioselective synthesis of vinyl triflones from styrenes with CF3SO2Na. Org Biomol Chem 2016; 14:8443-7. [DOI: 10.1039/c6ob01567k] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The iodine-mediated reaction of styrenes and CF3SO2Na proceeded regioselectively to give various potentially useful vinyl triflones.
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Affiliation(s)
- Li-Na Hua
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
- China
| | - Huan Li
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
- China
| | - Feng-Ling Qing
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
- China
| | - Yangen Huang
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
- China
| | - Xiu-Hua Xu
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
- China
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39
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Friese DH, Mikhaylov A, Krzeszewski M, Poronik YM, Rebane A, Ruud K, Gryko DT. Pyrrolo[3,2-b]pyrroles-From Unprecedented Solvatofluorochromism to Two-Photon Absorption. Chemistry 2015; 21:18364-74. [PMID: 26511232 PMCID: PMC4713190 DOI: 10.1002/chem.201502762] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2015] [Indexed: 12/11/2022]
Abstract
A combined experimental and theoretical study of the two-photon absorption (2PA) properties of a series of quadrupolar molecules possessing a highly electron-rich heterocyclic core, pyrrolo[3,2-b]pyrrole, is presented. In agreement with quantum-chemical calculations, large 2PA cross-section values, σ2PA ≈10(2) -10(3) GM (1 GM=10(50) cm(4) s photon(-1) ), are observed at wavelengths of 650-700 nm, which correspond to the two-photon allowed but one-photon forbidden transitions. The calculations also predict that increased planarity of this molecule through removal of two N-substituents leads to further increase in the σ2PA values. Surprisingly, the most quadrupolar pyrrolo[3,2-b]pyrrole derivative, containing two 4-nitrophenyl substituents at positions 2 and 5, demonstrates a very strong solvatofluorochromic effect, with a fluorescence quantum yield as high as 0.96 in cyclohexane, whereas the fluorescence vanishes in DMSO.
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Affiliation(s)
- Daniel H Friese
- Universitetet i Tromsø-Norges Arktiske Universitet, Centre for Theoretical and Computational Chemistry Tromsø, 9037 Tromsø (Norway)
| | | | - Maciej Krzeszewski
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw (Poland)
| | - Yevgen M Poronik
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw (Poland)
| | - Aleksander Rebane
- Department of Physics, Montana State University, Bozeman, MT 59717 (USA).
- National Institute of Chemical Physics and Biophysics, Akadeemia Tee 23, 12618 Tallinn (Estonia).
| | - Kenneth Ruud
- Universitetet i Tromsø-Norges Arktiske Universitet, Centre for Theoretical and Computational Chemistry Tromsø, 9037 Tromsø (Norway).
| | - Daniel T Gryko
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw (Poland).
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40
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Colombo A, Dragonetti C, Roberto D, Valore A, Ferrante C, Fortunati I, Picone AL, Todescato F, Williams JAG. Two-photon absorption properties and (1)O2 generation ability of Ir complexes: an unexpected large cross section of [Ir(CO)2Cl(4-(para-di-n-butylaminostyryl)pyridine)]. Dalton Trans 2015; 44:15712-20. [PMID: 26266469 DOI: 10.1039/c5dt00552c] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The new complexes cis-[Ir(CO)2Cl(4-(para-di-n-butylaminostyryl)pyridine)] () and [Ir(cyclometallated-2-phenylpyridine)2(4,4'-(para-di-n-butylaminostyryl)-2,2'-bipyridine)][PF6] () were synthesized and fully characterized along with the known complex Ir(cyclometallated-2-phenylpyridine)2(5-Me-1,10-phenanthroline)][PF6] (). Remarkably, complex , with an Ir(i) centre, displays fluorescence - as opposed to the phosphorescence typical of many Ir(iii) complexes - with a modestly high quantum yield in solution, opening a new route for the design of iridium-based emitters which should not be limited to the +3 oxidation state. It is also characterized by an unexpectedly large two-photon absorption (TPA) cross section, an order of magnitude higher than that previously reported for Ir(iii) or Pt(ii) complexes. The great potential of cyclometallated Ir(iii) complexes for photodynamic therapy was confirmed, with and showing a good singlet oxygen generation ability, coupled with a modest TPA activity for .
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Affiliation(s)
- Alessia Colombo
- Dipartimento di Chimica dell'Università degli Studi di Milano, UdR- INSTM, Italy.
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41
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Okusu S, Hirano K, Tokunaga E, Shibata N. Organocatalyzed Trifluoromethylation of Ketones and Sulfonyl Fluorides by Fluoroform under a Superbase System. ChemistryOpen 2015; 4:581-5. [PMID: 26491635 PMCID: PMC4608523 DOI: 10.1002/open.201500160] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2015] [Indexed: 11/25/2022] Open
Abstract
Fluoroform (HCF3, HFC-23) is a side product in the manufacture of polytetrafluoroethylene (Teflon). Despite its attractive properties, taming HCF3 for trifluoromethylation is quite problematic owing to its low acidity and the lability of the naked trifluoromethyl carbanion generated from HCF3. Herein we report the organic-superbase-catalyzed trifluoromethylation of ketones and arylsulfonyl fluorides by HCF3. The reactions were carried out by using a newly developed "superbase organocatalyst system" consisting of catalytic amounts of P4-tBu and N(SiMe3)3. A series of aryl and alkyl ketones were converted into the corresponding α-trifluoromethyl carbinols in good yields under the organocatalysis conditions in THF. The superbase organocatalytic system can also be applied to the trifluoromethylation of arylsulfonyl fluorides for biologically important aryl triflones in THF or DMF in good yields. Protonated P4-tBu, H[P4-tBu](+), is suggested to be crucial for the catalytic process. This new catalytic methodology using HCF3 is expected to expand the range of synthetic applications of trifluoromethylation.
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Affiliation(s)
- Satoshi Okusu
- Department of Nanopharmaceutical Sciences, Department of Frontier Materials, Nagoya Institute of TechnologyGokiso, Showa-ku, Nagoya, 466-8555, Japan
| | - Kazuki Hirano
- Department of Nanopharmaceutical Sciences, Department of Frontier Materials, Nagoya Institute of TechnologyGokiso, Showa-ku, Nagoya, 466-8555, Japan
| | - Etsuko Tokunaga
- Department of Nanopharmaceutical Sciences, Department of Frontier Materials, Nagoya Institute of TechnologyGokiso, Showa-ku, Nagoya, 466-8555, Japan
| | - Norio Shibata
- Department of Nanopharmaceutical Sciences, Department of Frontier Materials, Nagoya Institute of TechnologyGokiso, Showa-ku, Nagoya, 466-8555, Japan
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42
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Zhang K, Xu XH, Qing FL. Copper-Promoted Trifluoromethanesulfonylation and Trifluoromethylation of Arenediazonium Tetrafluoroborates with NaSO2CF3. J Org Chem 2015; 80:7658-65. [DOI: 10.1021/acs.joc.5b01295] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ke Zhang
- College
of Chemistry, Chemical Engineering and Biotechnology, Donghua University, 2999 North Renmin Lu, Shanghai 201620, China
| | - Xiu-Hua Xu
- Key
Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic
Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Feng-Ling Qing
- College
of Chemistry, Chemical Engineering and Biotechnology, Donghua University, 2999 North Renmin Lu, Shanghai 201620, China
- Key
Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic
Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
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43
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Simulations of fluorescence solvatochromism in substituted PPV oligomers from excited state molecular dynamics with implicit solvent. Chem Phys Lett 2015. [DOI: 10.1016/j.cplett.2015.04.030] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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44
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Design of donor–acceptor geometry for tuning excited-state polarization: fluorescence solvatochromism of push–pull biphenyls with various torsional restrictions on their aryl–aryl bonds. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.08.002] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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45
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Hosseinzadeh R, Mohadjerani M, Pooryousef M. Fluorene-based boronic acids as fluorescent chemosensor for monosaccharides at physiological pH. LUMINESCENCE 2014; 30:549-55. [PMID: 25264138 DOI: 10.1002/bio.2776] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2014] [Revised: 07/04/2014] [Accepted: 08/25/2014] [Indexed: 11/11/2022]
Abstract
Two fluorene-based boronic acids, 9,9-dimethyl-9H-fluoren-2-yl-2-boronic acid (1) and 9,9-dimethyl-9H-fluoren-2,7-diyl-2,7-diboronic acid (2), were synthesized and their sensing abilities for detection of D-monosaccharides were investigated by fluorescence at physiological pH. It was found that both boronic acids 1 and 2 have high selectivity and sensitivity for D-fructose with stability constant of 47.2 and 412.9, respectively. The sensor 2 showed a linear response toward D-fructose in the concentration range from 5 × 10(-5) to 10(-1) mol L(-1) with the detection limit of 2 × 10(-5) mol L(-1).
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Affiliation(s)
- Rahman Hosseinzadeh
- Department of Organic Chemistry, Faculty of Chemistry, University of Mazandaran, Babolsar, Iran
| | - Maryam Mohadjerani
- Department of Molecular and Cell Biology, Faculty of Basic Sciences, University of Mazandaran, Babolsar, Iran
| | - Mona Pooryousef
- Department of Organic Chemistry, Faculty of Chemistry, University of Mazandaran, Babolsar, Iran
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46
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Guo L, Wong MS. Multiphoton excited fluorescent materials for frequency upconversion emission and fluorescent probes. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:5400-5428. [PMID: 24981591 DOI: 10.1002/adma.201400084] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2014] [Revised: 04/17/2014] [Indexed: 06/03/2023]
Abstract
Recent progress in developing various strategies for exploiting efficient MPA fluorophores for two emerging technological MPA applications including frequency upconversion photoluminescence and lasing as well as 2PA fluorescence bioimaging and biosensing are presented. An intriguing application of MPA frequency-upconverted lasing offers opportunity for the fabrication of high-energy coherent light sources in the blue region which could create new advantages and breakthroughs in various laser-based applications. In addition, multiphoton excitation has led to considerable progress in the development of advanced diagnostic and therapeutic treatments; further advancement is anticipated with the emergence of various versatile 2PA fluorescence probes. It is widely appreciated that the two-photon excitation offers significant advantages for the biological fluorescence imaging and sensing which includes higher spatial resolution, less photobleaching and photodamage as well as deeper tissue penetration as compared to the one-photon excited microscopy. To be practically useful, the 2PA fluorescent probes for biological applications are required to have a site-specificity, a high fluorescence quantum yield, proper two-photon excitation and subsequent emission wavelengths, good photodecomposition stability, water solubility, and biocompatibility besides large 2PA action cross-sections.
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Affiliation(s)
- Lei Guo
- Institute of Molecular Functional Materials+, Department of Chemistry and Institute of Advanced Materials, Hong Kong Baptist University, Kowloon Tong, Hong Kong SAR, China
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47
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Xu XH, Matsuzaki K, Shibata N. Synthetic methods for compounds having CF3-S units on carbon by trifluoromethylation, trifluoromethylthiolation, triflylation, and related reactions. Chem Rev 2014; 115:731-64. [PMID: 25121343 DOI: 10.1021/cr500193b] [Citation(s) in RCA: 844] [Impact Index Per Article: 84.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Xiu-Hua Xu
- Department of Nanopharmaceutical Science and Department of Frontier Materials, Nagoya Institute of Technology , Gokiso, Showa-ku, Nagoya 466-8555, Japan
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48
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Lin TC, Tsai BK, Liu YY, Tsai MY. Synthesis and Two-Photon Absorption Properties of Ladder-Type Chromophores with Functionalized Pyrazine Units Fused as the End-Groups. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402622] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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49
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Carlotti B, Benassi E, Spalletti A, Fortuna CG, Elisei F, Barone V. Photoinduced symmetry-breaking intramolecular charge transfer in a quadrupolar pyridinium derivative. Phys Chem Chem Phys 2014; 16:13984-94. [PMID: 24898848 DOI: 10.1039/c4cp00631c] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
We report here a joint experimental and theoretical study of a quadrupolar, two-branched pyridinium derivative of interest as a potential non-linear optical material. The spectral and photophysical behaviour of this symmetric system is greatly affected by the polarity of the medium. A very efficient photoinduced intramolecular charge transfer, surprisingly more efficient than in the dipolar asymmetric analogue, is found to occur by femtosecond resolved transient absorption spectroscopy. TD-DFT calculations are in excellent agreement with these experimental findings and predict large charge displacements in the molecular orbitals describing the ground state and the lowest excited singlet state. The theoretical study also revealed that in highly polar media the symmetry of the excited state is broken giving a possible explanation to the fluorescence and transient absorption spectra resembling those of the one-branched analogous compound in the same solvents. The present study may give an important insight into the excited state deactivation mechanism of cationic (donor-π-acceptor-π-donor)(+) quadrupolar compounds characterised by negative solvatochromism, which are expected to show significant two-photon absorption (TPA). Moreover, the water solubility of the investigated quadrupolar system may represent an added value in view of the most promising applications of TPA materials in biology and medicine.
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Affiliation(s)
- Benedetta Carlotti
- Department of Chemistry, Biology and Biotechnology and Centro di Eccellenza sui Materiali Innovativi Nanostrutturati (CEMIN), University of Perugia, via Elce di Sotto 8, 06123 Perugia, Italy.
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50
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Lin TC, Liu YY, Li MH, Liu CY, Tseng SY, Wang YT, Tseng YH, Chu HH, Luo CW. Synthesis and Characterization of Two-Photon Chromophores Based on a Tetrasubstituted Tetraethynylethylene Scaffold. Chem Asian J 2014; 9:1601-10. [DOI: 10.1002/asia.201402094] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2014] [Indexed: 11/11/2022]
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