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Mondal A, Pal D, Phukan HJ, Roy M, Kumar S, Purkayastha S, Guha AK, Srimani D. Manganese Complex Catalyzed Sequential Multi-component Reaction: Enroute to a Quinoline-Derived Azafluorenes. CHEMSUSCHEM 2024; 17:e202301138. [PMID: 38096176 DOI: 10.1002/cssc.202301138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 11/06/2023] [Indexed: 01/09/2024]
Abstract
The development of innovative synthetic strategies for constructing complex molecular structures is the heart of organic chemistry. This significance of novel reactions or reaction sequences would further enhance if they permitted the synthesis of new classes of structural motifs, which have not been previously created. The research on the synthesis of heterocyclic compounds is one of the most active topics in organic chemistry due to the widespread application of N-heterocycles in life and material science. The development of a new catalytic process that employs first-row transition metals to produce a range of heterocycles from renewable raw materials is considered highly sustainable approach. This would be more advantageous if done in an eco-friendly and atom-efficient manner. Herein we introduce, the synthesis of various new quinoline based azafluorenes via sequential dehydrogenative multicomponent reaction (MCR) followed by C(sp3)-H hydroxylation and annulation. Our newly developed, Mn-complexes have the ability to direct the reaction in order to achieve a high amount of desired functionalized heterocycles while minimizing the possibility of multiple side reactions. We also performed a series of control experiments, hydride trapping experiments, reaction kinetics, catalytic intermediate and DFT studies to comprehend the detailed reaction route and the catalyst's function in the MCR sequence.
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Affiliation(s)
- Avijit Mondal
- Department of Chemistry, Indian Institute of Technology-Guwahati, Kamrup, Assam, 781039, India
| | - Debjyoti Pal
- Department of Chemistry, Indian Institute of Technology-Guwahati, Kamrup, Assam, 781039, India
| | - Hirak Jyoti Phukan
- Department of Chemistry, Indian Institute of Technology-Guwahati, Kamrup, Assam, 781039, India
| | - Mithu Roy
- Department of Chemistry, Indian Institute of Technology-Guwahati, Kamrup, Assam, 781039, India
| | - Saurabh Kumar
- Department of Chemistry, Indian Institute of Technology-Guwahati, Kamrup, Assam, 781039, India
| | | | - Ankur Kanti Guha
- Advanced Computational Chemistry Centre, Cotton University, Guwahati, 781001, India
| | - Dipankar Srimani
- Department of Chemistry, Indian Institute of Technology-Guwahati, Kamrup, Assam, 781039, India
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2
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Paul S, Maity S, Halder S, Dutta B, Jana S, Jana K, Sinha C. Idiosyncratic recognition of Zn2+ and CN- using Pyrazolyl-Hydroxy-Coumarin scaffold and live cell imaging: Depiction of Luminescent Zn(II)-Metallocryptand. Dalton Trans 2022; 51:3198-3212. [DOI: 10.1039/d1dt03654h] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Multi-responsive sensitive and selective sensor design is one of the stimulating researches in sensor field. We have designed a pyrazolyl-hydroxy-coumarin scaffold, 7-hydroxy-4-methyl-8-(((5-phenyl-1H-pyrazol-3-yl)imino)methyl)-2H-chromen-2-one (H2L) and characterized by spectroscopic data (1H-NMR,13C-NMR, ESI-MS,...
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3
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Bag SS, Gogoi H, Sinha S. Synthesis and studies on the photophysical/biophysical properties of triazolylfluorene-labeled 2′-deoxyuridines. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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4
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Ratiometric two-photon fluorescence probes for sensing, imaging and biomedicine applications at living cell and small animal levels. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.214114] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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5
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Turn-off fluorene-based chemosensor switch to Fe3+: Spectroscopic study, merit parameters, theoretical calculations, and its application in Brazilian ethanol fuel. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2021.120511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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6
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Fluorene Based Ferric Complex as Colorimetric and Fluorometric Probe for Highly Selective Detection of CN - and S 2- Anions. J Fluoresc 2021; 31:1311-1321. [PMID: 34110595 DOI: 10.1007/s10895-021-02737-w] [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: 03/10/2021] [Accepted: 05/03/2021] [Indexed: 10/21/2022]
Abstract
A series of new chemosensor molecules bearing benzothiazole-, quinoline- and phthalazine-functionalized fluorene derivatives were synthesized and their complexation behaviors with Fe3+ and Sn2+ ions were investigated. The sensing abilities of their complexes towards both cyanide and sulfide anions were investigated by colorimetric and fluorometric techniques in detail. The sensing mechanism was investigated by Job's and Scatchard plots evaluations, and also absorption/fluorescence titration experiments. Among the studied dye/metal binary systems, F-BT sensor to Fe3+ giving the detection limits of 3.1 µg has also displayed high selectivity and sensitivity towards CN- and S2- anions, lead to a significant color change of the solution observable by the naked eye.
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7
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Fu WC, Kwong FY. A denitrogenative palladium-catalyzed cascade for regioselective synthesis of fluorenes. Chem Sci 2019; 11:1411-1417. [PMID: 34123265 PMCID: PMC8148384 DOI: 10.1039/c9sc04062e] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
We herein report a denitrogenative palladium-catalyzed cascade for the modular and regioselective synthesis of polysubstituted fluorenes. Hydrazone facilitates the Pd(ii) to Pd(iv) oxidative addition in a Catellani pathway and is also the methylene synthon in the proposed reaction. Aryl iodides and 2-bromoarylaldehyde hydrazones undergo a norbornene-controlled tandem reaction sequence to give a broad scope of fluorenes in the presence of a palladium catalyst. The method described is scalable and adaptable to a three-component reaction with in situ generation of the hydrazone group. Preliminary mechanistic investigations have been conducted.
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Affiliation(s)
- Wai Chung Fu
- Department of Chemistry, State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong Shatin New Territories Hong Kong
| | - Fuk Yee Kwong
- Department of Chemistry, State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong Shatin New Territories Hong Kong
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8
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Laohapaisan P, Chuangsoongnern P, Tummatorn J, Thongsornkleeb C, Ruchirawat S. Divergent Synthesis of 3-Hydroxyfluorene and 4-Azafluorene Derivatives from ortho-Alkynylarylketones. J Org Chem 2019; 84:14451-14460. [DOI: 10.1021/acs.joc.9b01825] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Pavitra Laohapaisan
- Program on Chemical Biology, Chulabhorn Graduate Institute, Center of Excellence on Environmental Health and Toxicology (EHT), Ministry of Education, 54 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand
| | - Pennapa Chuangsoongnern
- Laboratory of Medicinal Chemistry, Chulabhorn Research Institute, 54 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand
| | - Jumreang Tummatorn
- Program on Chemical Biology, Chulabhorn Graduate Institute, Center of Excellence on Environmental Health and Toxicology (EHT), Ministry of Education, 54 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand
- Laboratory of Medicinal Chemistry, Chulabhorn Research Institute, 54 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand
| | - Charnsak Thongsornkleeb
- Program on Chemical Biology, Chulabhorn Graduate Institute, Center of Excellence on Environmental Health and Toxicology (EHT), Ministry of Education, 54 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand
- Laboratory of Medicinal Chemistry, Chulabhorn Research Institute, 54 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand
| | - Somsak Ruchirawat
- Program on Chemical Biology, Chulabhorn Graduate Institute, Center of Excellence on Environmental Health and Toxicology (EHT), Ministry of Education, 54 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand
- Laboratory of Medicinal Chemistry, Chulabhorn Research Institute, 54 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand
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9
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Gharami S, Aich K, Sarkar D, Ghosh P, Murmu N, Mondal TK. An ESIPT based chromogenic and fluorescent ratiometric probe for Zn2+ with imaging in live cells and tissues. NEW J CHEM 2019. [DOI: 10.1039/c8nj04695f] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A benzothiazole based fluorescent probe for selective and efficient detection of Zn2+ showing potential application in human breast cancer cells.
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Affiliation(s)
- Saswati Gharami
- Department of Chemistry
- Jadavpur University
- Kolkata-70003
- India
| | - Krishnendu Aich
- Department of Chemistry
- Jadavpur University
- Kolkata-70003
- India
| | - Deblina Sarkar
- Department of Signal Transduction and Biogenic Amines (STBA)
- Chittaranjan National Cancer Institute
- Kolkata-700026
- India
| | - Paramita Ghosh
- Department of Signal Transduction and Biogenic Amines (STBA)
- Chittaranjan National Cancer Institute
- Kolkata-700026
- India
| | - Nabendu Murmu
- Department of Signal Transduction and Biogenic Amines (STBA)
- Chittaranjan National Cancer Institute
- Kolkata-700026
- India
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10
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Wait EE, Masunov AE, Vasu SS. Quantum chemical and master equation study of OH + CH
2
O → H
2
O + CHO reaction rates in supercritical CO
2
environment. INT J CHEM KINET 2018. [DOI: 10.1002/kin.21228] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Elizabeth E. Wait
- NanoScienece Technology Center University of Central Florida Orlando Florida
- Department of Chemistry University of Central Florida Orlando Florida
| | - Artëm E. Masunov
- NanoScienece Technology Center University of Central Florida Orlando Florida
- Department of Chemistry University of Central Florida Orlando Florida
- School of Modeling, Simulation, and Training University of Central Florida Orlando Florida
- South Ural State University Chelyabinsk Russia
- National Research Nuclear University MEPhI Moscow Russia
| | - Subith S. Vasu
- Center for Advanced Turbomachinery and Energy Research (CATER) Mechanical and Aerospace Engineering University of Central Florida Orlando Florida
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11
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Diao H, Guo L, Liu W, Feng L. A novel polymer probe for Zn(II) detection with ratiometric fluorescence signal. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 196:274-280. [PMID: 29466780 DOI: 10.1016/j.saa.2018.02.036] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Revised: 02/05/2018] [Accepted: 02/10/2018] [Indexed: 06/08/2023]
Abstract
A conjugated polymer probe comprised of fluorene, quinolone and benzothiazole units was designed and synthesized by the Suzuki coupling reaction. Through the studies of photophysical and thermal properties, the polymer displays blue-emitting feature and good thermal stability. A ratiometric fluorescence signal of the probe for Zn(II) was observed in ethanol with a new emission peak at 555 nm. The probe possesses a high selectivity and sensitivity for Zn(II) during familiar metal ions in ethanol. The detection limit of the probe for Zn (II) is up to 10-8 mol/L. The electron distributions of the polymer before and after bonding with Zn (II) were investigated by the Gaussian 09 software, which agreed with the experimental results. Noticeably, based on the color property of the probe with Zn(II), a series of color test paper were developed for visual detecting Zn(II) ions. This work helps to provide a platform or pattern for the development of polymer fluorescence probe in the chemosensor field.
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Affiliation(s)
- Haipeng Diao
- School of Basic Medical Sciences, Shanxi Medical University, Taiyuan 030001, PR China
| | - Lixia Guo
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, 030006, PR China
| | - Wen Liu
- School of Basic Medical Sciences, Shanxi Medical University, Taiyuan 030001, PR China
| | - Liheng Feng
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, 030006, PR China.
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12
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Liu X, Zhang Y, Hao H, Zhang W, Bai L, Wu Y, Zhao H, Zhang H, Ba X. Facile construction of a hyperbranched poly(acrylamide) bearing tetraphenylethene units: a novel fluorescence probe with a highly selective and sensitive response to Zn 2+. RSC Adv 2018; 8:5776-5783. [PMID: 35539606 PMCID: PMC9078268 DOI: 10.1039/c7ra13263h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Accepted: 01/26/2018] [Indexed: 12/27/2022] Open
Abstract
Thermo-responsive hyperbranched copoly(bis(N,N-ethyl acrylamide)/(N,N-methylene bisacrylamide)) (HPEAM-MBA) was synthesized by using reversible addition–fragmentation chain-transfer polymerization (RAFT). Interestingly, the zinc ion (Zn2+) was found to have a crucial influence on the lowest critical solution temperature (LCST) of the thermo-responsive polymer. The tetraphenylethylene (TPE) unit was then introduced onto the backbone of the as-prepared thermo-responsive polymer, which endows a Zn2+-responsive “turn-off” effect on the fluorescence properties. The TPE-bearing polymer shows a highly specific response over other metal ions and the “turn-off” response can even be tracked as the concentration of Zn2+ reduces to 2 × 10−5 M. The decrement of fluorescence intensity was linearly dependent on the concentration of Zn2+ in the range of 4–18 μmol L−1. The flexible, versatile and feasible approach, as well as the excellent detection performance, may generate a new type of Zn2+ probe without the tedious synthesis of the moiety bearing Zn2+ recognition units. A novel fluorescent HPEAM-TPEAH, possessing a highly selective and sensitive response to Zn2+, was synthesized using RAFT.![]()
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Affiliation(s)
- Xuejing Liu
- College of Chemistry & Environmental Science
- Hebei University
- Baoding
- P. R. China
| | - Yuangong Zhang
- College of Chemistry & Environmental Science
- Hebei University
- Baoding
- P. R. China
| | - Haijing Hao
- College of Chemistry & Environmental Science
- Hebei University
- Baoding
- P. R. China
| | - Wanju Zhang
- Hubei Key Laboratory for Processing and Application of Catalytic Materials
- Huanggang Normal University
- Huanggang
- P. R. China
| | - Libin Bai
- College of Chemistry & Environmental Science
- Hebei University
- Baoding
- P. R. China
- Hubei Key Laboratory for Processing and Application of Catalytic Materials
| | - Yonggang Wu
- College of Chemistry & Environmental Science
- Hebei University
- Baoding
- P. R. China
| | - Hongchi Zhao
- College of Chemistry & Environmental Science
- Hebei University
- Baoding
- P. R. China
| | - Hailei Zhang
- College of Chemistry & Environmental Science
- Hebei University
- Baoding
- P. R. China
| | - Xinwu Ba
- College of Chemistry & Environmental Science
- Hebei University
- Baoding
- P. R. China
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13
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Masunov AE, Wait EE, Atlanov AA, Vasu SS. Quantum Chemical Study of Supercritical Carbon Dioxide Effects on Combustion Kinetics. J Phys Chem A 2017; 121:3728-3735. [PMID: 28471684 DOI: 10.1021/acs.jpca.7b02638] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In oxy-fuel combustion, the pure oxygen (O2), diluted with CO2 is used as oxidant instead air. Hence, the combustion products (CO2 and H2O) are free from pollution by nitrogen oxides. Moreover, high pressures result in the near-liquid density of CO2 at supercritical state (sCO2). Unfortunately, the effects of sCO2 on the combustion kinetics are far from being understood. To assist in this understanding, in this work we are using quantum chemistry methods. Here we investigate potential energy surfaces of important combustion reactions in the presence of the carbon dioxide molecule. All transition states and reactant and product complexes are reported for three reactions: H2CO + HO2 → HCO + H2O2 (R1), 2HO2 → H2O2 + O2 (R2), and CO + OH → CO2 + H (R3). In reaction R3, covalent binding of CO2 to the OH radical and then the CO molecule opens a new pathway, including hydrogen transfer from oxygen to carbon atoms followed by CH bond dissociation. Compared to the bimolecular OH + CO mechanism, this pathway reduces the activation barrier by 5 kcal/mol and is expected to accelerate the reaction. In the case of hydroperoxyl self-reaction 2HO2 → H2O2 + O2 the intermediates, containing covalent bonds to CO2 are found not to be competitive. However, the spectator CO2 molecule can stabilize the cyclic transition state and lower the barrier by 3 kcal/mol. Formation of covalent intermediates is also discovered in the H2CO + HO2 → HCO + H2O2 reaction, but these species lead to substantially higher activation barriers, which makes them unlikely to play a role in hydrogen transfer kinetics. The van der Waals complexation with carbon dioxide also stabilizes the transition state and reduces the reaction barrier. These results indicate that the CO2 environment is likely to have a catalytic effect on combustion reactions, which needs to be included in kinetic combustion mechanisms in supercritical CO2.
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Affiliation(s)
- Artëm E Masunov
- National Research Nuclear University MEPhI , Kashirskoye shosse 31, Moscow 115409, Russia.,South Ural State University , Lenin pr. 76, Chelyabinsk 454080, Russia
| | | | - Arseniy A Atlanov
- Department of Chemistry and Biochemistry, 95 Chieftan Way Room 118 DLC, Florida State University , Tallahassee, Florida 32806, United States
| | - Subith S Vasu
- Center for Advanced Turbomachinery and Energy Research (CATER), Mechanical and Aerospace Engineering, University of Central Florida , Orlando, Florida 32816, United States
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14
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Esipova TV, Rivera-Jacquez HJ, Weber B, Masunov AE, Vinogradov SA. Two-Photon Absorbing Phosphorescent Metalloporphyrins: Effects of π-Extension and Peripheral Substitution. J Am Chem Soc 2016; 138:15648-15662. [PMID: 27934026 PMCID: PMC8281454 DOI: 10.1021/jacs.6b09157] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The ability to form triplet excited states upon two-photon excitation is important for several applications of metalloporphyrins, including two-photon phosphorescence lifetime microscopy (2PLM) and two-photon photodynamic therapy (PDT). Here we analyzed one-photon (1P) and degenerate two-photon (2P) absorption properties of several phosphorescent Pt (II) porphyrins, focusing on the effects of aromatic π-extension and peripheral substitution on triplet emissivity and two-photon absorption (2PA). Our 2PA measurements for the first time made use of direct time-resolved detection of phosphorescence, having the ability to efficiently reject laser background through microsecond time gating. π-Extension of the porphyrin macrocycle by way of syn-fusion with two external aromatic fragments, such as in syn-dibenzo- (DBP) and syn-dinaphthoporphyrins (DNP), lowers the symmetry of the porphyrin skeleton. As a result, DBPs and DNPs exhibit stronger 2PA into the one-photon-allowed B (Soret) and Q states than fully symmetric (D4h) nonextended porphyrins. However, much more 2P-active states lie above the B state and cannot be accessed due to the interfering linear absorption. Alkoxycarbonyl groups (CO2R) in the benzo-rings dramatically enhance 2PA near the B state level. Time-dependent density functional theory (TDDFT) calculations in combinations with the sum-over-states (SOS) formalism revealed that the enhancement is due to the stabilization of higher-lying 2P-active states, which are dominated by the excitations involving orbitals extending onto the carbonyl groups. Furthermore, calculations predicted even stronger stabilization of the 2P-allowed gerade-states in symmetric Pt octaalkoxycarbonyl-tetrabenzoporphyrins. Experiments confirmed that the 2PA cross-section of PtTBP(CO2Bu)8 near 810 nm reaches above 500 GM in spite of its completely centrosymmetric structure. Combined with exceptionally bright phosphorescence (ϕphos = 0.45), strong 2PA makes Pt(II) complexes of π-extended porphyrins a valuable class of chromophores for 2P applications. Another important advantage of these porphyrinoids is their compact size and easily scalable synthesis.
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Affiliation(s)
| | - Héctor J Rivera-Jacquez
- NanoScience Technology Center, Department of Chemistry and Department of Physics, University of Central Florida , Orlando, Florida 32816, United States
| | - Bruno Weber
- Institute of Pharmacology and Toxicology, University of Zurich , Zurich CH-8057, Switzerland
| | - Artëm E Masunov
- NanoScience Technology Center, Department of Chemistry and Department of Physics, University of Central Florida , Orlando, Florida 32816, United States
- Photochemistry Center, Russian Academy of Sciences , ul. Novatorov 7a, Moscow 119421, Russia
- South Ural State University , Lenin pr. 76, Chelyabinsk 454080, Russia
- National Nuclear Research University MEPhI , Kashirskoye sh. 31, Moscow 115409, Russia
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15
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Masunov AE, Atlanov AA, Vasu SS. Potential Energy Surfaces for the Reactions of HO 2 Radical with CH 2O and HO 2 in CO 2 Environment. J Phys Chem A 2016; 120:7681-7688. [PMID: 27552660 DOI: 10.1021/acs.jpca.6b07257] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report on potential energies for the transition state, reactant, and product complexes along the reaction pathways for hydrogen transfer reactions to hydroperoxyl radical from formaldehyde H2CO + HO2 → HCO + H2O2 and another hydroperoxyl radical 2HO2 → H2O2 + O2 in the presence of one carbon dioxide molecule. Both covalently bonded intermediates and weak intermolecular complexes are identified and characterized. We found that reactions that involve covalent intermediates have substantially higher activation barriers and are not likely to play a role in hydrogen transfer kinetics. The van der Waals complexation with carbon dioxide does not affect hydrogen transfer from formaldehyde, but it lowers the barrier for hydroperoxyl self-reaction by nearly 3 kcal/mol. This indicates that CO2 environment is likely to have catalytic effect on HO2 self-reaction, which needs to be included in kinetic combustion mechanisms in supercritical CO2.
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Affiliation(s)
- Artëm E Masunov
- National Research Nuclear University MEPhI , Kashirskoye shosse 31, Moscow 115409, Russia
| | - Arseniy A Atlanov
- Department of Chemistry and Biochemistry, 95 Chieftan Way Rm. 118 DLC, Florida State University , Tallahassee, Florida 32806, United States
| | - Subith S Vasu
- Center for Advanced Turbomachinery and Energy Research (CATER), Mechanical and Aerospace Engineering, University of Central Florida , Orlando, Florida 32816, United States
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16
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Masunov AE, Wait E, Vasu SS. Chemical Reaction CO+OH(•) → CO2+H(•) Autocatalyzed by Carbon Dioxide: Quantum Chemical Study of the Potential Energy Surfaces. J Phys Chem A 2016; 120:6023-8. [PMID: 27351778 DOI: 10.1021/acs.jpca.6b03242] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The supercritical carbon dioxide medium, used to increase efficiency in oxy combustion fossil energy technology, may drastically alter both rates and mechanisms of chemical reactions. Here we investigate potential energy surface of the second most important combustion reaction with quantum chemistry methods. Two types of effects are reported: formation of the covalent intermediates and formation of van der Waals complexes by spectator CO2 molecule. While spectator molecule alter the activation barrier only slightly, the covalent bonding opens a new reaction pathway. The mechanism includes sequential covalent binding of CO2 to OH radical and CO molecule, hydrogen transfer from oxygen to carbon atoms, and CH bond dissociation. This reduces the activation barrier by 11 kcal/mol at the rate-determining step and is expected to accelerate the reaction rate. The finding of predicted catalytic effect is expected to play an important role not only in combustion but also in a broad array of chemical processes taking place in supercritical CO2 medium. It may open a new venue for controlling reaction rates for chemical manufacturing.
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Affiliation(s)
- Artëm E Masunov
- National Research Nuclear University MEPhI , Kashirskoye shosse 31, Moscow, 115409, Russia
| | | | - Subith S Vasu
- Center for Advanced Turbomachinery and Energy Research (CATER), Mechanical and Aerospace Engineering University of Central Florida , Orlando, Florida 32816, United States
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17
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Chisca D, Croitor L, Coropceanu EB, Petuhov O, Baca SG, Krämer K, Liu SX, Decurtins S, Rivera-Jacquez HJ, Masunov AE, Fonari MS. From pink to blue and back to pink again: changing the Co(ii) ligation in a two-dimensional coordination network upon desolvation. CrystEngComm 2016. [DOI: 10.1039/c5ce01581b] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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18
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Arumugaperumal R, Srinivasadesikan V, Lin MC, Shellaiah M, Shukla T, Lin HC. Facile rhodamine-based colorimetric sensors for sequential detections of Cu(ii) ions and pyrophosphate (P2O74−) anions. RSC Adv 2016. [DOI: 10.1039/c6ra24472f] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Two rhodamine hydrazine derivatives Rh1 and Rh2 with catechol and ether functionalities have been synthesized and utilized towards sequential colorimetric detections of Cu(ii) and pyrophosphate (PPi) ions in a semi-aqueous medium.
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Affiliation(s)
- Reguram Arumugaperumal
- Department of Materials Science and Engineering
- National Chiao Tung University
- Hsinchu 300
- Taiwan
| | - Venkatesan Srinivasadesikan
- Center for Interdisciplinary Molecular Science
- Department of Applied Chemistry
- National Chiao Tung University
- Hsinchu 300
- Taiwan
| | - Ming-Chang Lin
- Center for Interdisciplinary Molecular Science
- Department of Applied Chemistry
- National Chiao Tung University
- Hsinchu 300
- Taiwan
| | - Muthaiah Shellaiah
- Department of Materials Science and Engineering
- National Chiao Tung University
- Hsinchu 300
- Taiwan
| | - Tarun Shukla
- Department of Materials Science and Engineering
- National Chiao Tung University
- Hsinchu 300
- Taiwan
| | - Hong-Cheu Lin
- Department of Materials Science and Engineering
- National Chiao Tung University
- Hsinchu 300
- Taiwan
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Masunov AE, Anderson D, Freidzon AY, Bagaturyants AA. Symmetry-Breaking in Cationic Polymethine Dyes: Part 2. Shape of Electronic Absorption Bands Explained by the Thermal Fluctuations of the Solvent Reaction Field. J Phys Chem A 2015; 119:6807-15. [DOI: 10.1021/acs.jpca.5b03877] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
| | | | - Alexandra Ya. Freidzon
- Photochemistry
Center RAS, ul. Novatorov 7a, Moscow, 119421, Russia
- National Research Nuclear University MEPhI, Kashirskoye shosse 31, Moscow, 115409, Russia
| | - Alexander A. Bagaturyants
- Photochemistry
Center RAS, ul. Novatorov 7a, Moscow, 119421, Russia
- National Research Nuclear University MEPhI, Kashirskoye shosse 31, Moscow, 115409, Russia
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20
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Huang S, Yang BZ, Guo JF, Ren AM. Zn2+ responsive two-photon fluorescent probes based on branch structure: a computational investigation. Mol Phys 2014. [DOI: 10.1080/00268976.2014.961580] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Shuang Huang
- School of Mathematics and Physics, Changzhou University, Changzhou, People's Republic of China
| | - Bao-Zhu Yang
- School of Mathematics and Physics, Changzhou University, Changzhou, People's Republic of China
| | - Jing-Fu Guo
- School of Physics, Northeast Normal University, Changchun, People's Republic of China
| | - Ai-Min Ren
- State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun, People's Republic of China
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Divya KP, Sreejith S, Ashokkumar P, Yuzhan K, Peng Q, Maji SK, Tong Y, Yu H, Zhao Y, Ramamurthy P, Ajayaghosh A. A ratiometric fluorescent molecular probe with enhanced two-photon response upon Zn2+ binding for in vitro and in vivo bioimaging. Chem Sci 2014. [DOI: 10.1039/c4sc00736k] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The ratiometric two-photon (2P) probe GBC shows enhanced 2P activity upon zinc ion binding and has been used for zinc ion imaging in vitro and in vivo.
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Affiliation(s)
- Kizhmuri P. Divya
- Photosciences and Photonics Group
- Chemical Sciences and Technology Division
- CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST)
- Trivandrum-695 019, India
| | - Sivaramapanicker Sreejith
- Photosciences and Photonics Group
- Chemical Sciences and Technology Division
- CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST)
- Trivandrum-695 019, India
- Division of Chemistry and Biological Chemistry
| | - Pichandi Ashokkumar
- National Centre for Ultrafast Processes (NCUFP)
- University of Madras
- Taramani Campus
- Chennai-600 113, India
| | - Kang Yuzhan
- Singapore-MIT Alliance for Research and Technology
- , Singapore
| | - Qiwen Peng
- Singapore-MIT Alliance for Research and Technology
- , Singapore
| | - Swarup Kumar Maji
- Division of Chemistry and Biological Chemistry
- School of Physical and Mathematical Sciences
- Nanyang Technological University
- , Singapore
| | - Yan Tong
- Centre for Bioimaging Sciences (CBIS)
- Blk S1A, Level 2, Lee Wee Kheng Building
- National University of Singapore
- , Singapore
| | - Hanry Yu
- Singapore-MIT Alliance for Research and Technology
- , Singapore
- Department of Physiology
- Yong Loo Lin School of Medicine
- National University Health System
| | - Yanli Zhao
- Division of Chemistry and Biological Chemistry
- School of Physical and Mathematical Sciences
- Nanyang Technological University
- , Singapore
| | - Perumal Ramamurthy
- National Centre for Ultrafast Processes (NCUFP)
- University of Madras
- Taramani Campus
- Chennai-600 113, India
| | - Ayyappanpillai Ajayaghosh
- Photosciences and Photonics Group
- Chemical Sciences and Technology Division
- CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST)
- Trivandrum-695 019, India
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Sarkar D, Pramanik AK, Mondal TK. Coumarin based dual switching fluorescent ‘turn-on’ chemosensor for selective detection of Zn2+ and HSO4−: an experimental and theoretical study. RSC Adv 2014. [DOI: 10.1039/c4ra02765e] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
A coumarin based fluorescence ‘turn-on' chemosensor (HL) for the selective detection of Zn2+ and HSO4¬ has been developed. Emission intensity of HL is enhanced by 27 and 17 fold in presence of Zn2+ and HSO4¬ respectively. Theoretical study interprets the electronic structure and sensing mechanism of HL.
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Affiliation(s)
- Deblina Sarkar
- Department of Chemistry
- Jadavpur University
- Kolkata-700032, India
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Frazer A, Morales AR, Woodward AW, Tongwa P, Timofeeva T, Belfield KD. Luminescent Fluorene-Based Bis-Pyrazolyl Aniline Ligand for Aluminum Detection. J Fluoresc 2013; 24:239-250. [PMID: 24078297 DOI: 10.1007/s10895-013-1291-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2013] [Accepted: 08/21/2013] [Indexed: 11/25/2022]
Abstract
The design, synthesis, and photophysical properties of a new fluorene-based fluorescent chemosensor, 4-((E)-2-(2-(benzo[d]thiazol-2-yl)-9,9-diethyl-9H-fluoren-7-yl)vinyl)-N,N-bis((3,5-dimethyl-1H-pyrazol-1-yl)methyl)benzenamine (AXF-Al), is described for the detection of Al3+. AXF-Al exhibited absorption at 382 nm and strong fluorescence emission at 542 nm (fluorescence quantum yield, Φ F, of 0.80). The capture of Al3+ by the pyrazolyl aniline receptor resulted in nominal change in the linear absorption (372 nm) but a large hypsochromic shift of 161 nm in the fluorescence spectrum (542 to 433 nm, Φ F = 0.88), from which Al3+ was detected both ratiometrically and colorimetrically. The addition of other metal ions, namely Mg2+, Ca2+, Mn2+, Fe2+, Co2+, Ni2+, Cu2+, Zn2+, Cd2+, Hg 2+ and Pb2+, produced only minimal changes in the optical properties of this probe. The emission band of this probe was also accessed by two-photon excitation in the near-IR, as two-photon absorption (2PA) is important for potential applications in two-photon fluorescence microscopy (2PFM) imaging. The 2PA cross section of the free fluorenyl ligand AXF-Al was 220 GM at 810 nm and 235 GM at 810 nm for the Al-ligand complex, practically useful properties for 2PFM.
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Affiliation(s)
- Andrew Frazer
- Department of Chemistry, University of Central Florida, Orlando, FL, 32816-2366, USA
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Permanent dipole moments and energies of excited states from density functional theory compared with coupled cluster predictions: Case of para-nitroaniline. COMPUT THEOR CHEM 2013. [DOI: 10.1016/j.comptc.2013.06.032] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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25
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Belfield KD, Bondar MV, Morales AR, Yue X, Luchita G, Przhonska OV, Kachkovsky OD. Two-photon absorption and time-resolved stimulated emission depletion spectroscopy of a new fluorenyl derivative. Chemphyschem 2012; 13:3481-91. [PMID: 22887914 PMCID: PMC3496763 DOI: 10.1002/cphc.201200405] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2012] [Revised: 07/16/2012] [Indexed: 11/05/2022]
Abstract
The synthesis, comprehensive linear photophysical characterization, two-photon absorption (2PA), steady-state and time-resolved stimulated emission depletion properties of a new fluorene derivative, (E)-1-(2-(di-p-tolylamino)-9,9-diethyl-9H-fluoren-7-yl)-3-(thiophen-2-yl)prop-2-en-1-one (1), are reported. The primary linear spectral properties, including excitation anisotropy, fluorescence lifetimes, and photostability, were investigated in a number of aprotic solvents at room temperature. The degenerate 2PA spectra of 1 were obtained with open-aperture Z-scan and two-photon induced fluorescence methods, using a 1 kHz femtosecond laser system, and maximum 2PA cross-sections of ∼400-600 GM were obtained. The nature of the electronic absorption processes in 1 was investigated by DFT-based quantum chemical methods implemented in the Gaussian 09 program. The one- and two-photon stimulated emission spectra of 1 were measured over a broad spectral range using a femtosecond pump-probe-based fluorescence quenching technique, while a new methodology for time-resolved fluorescence emission spectroscopy is proposed. An effective application of 1 in fluorescence bioimaging was demonstrated by means of one- and two-photon fluorescence microscopy images of HCT 116 cells containing dye encapsulated micelles.
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Affiliation(s)
- Kevin D. Belfield
- Department of Chemistry University of Central Florida P.O. Box 162366, Orlando, FL 32816-2366, USA)
- CREOL, The College of Optics and Photonics University of Central Florida P.O. Box 162366, Orlando, FL 32816-2366, USA
| | - Mykhailo V. Bondar
- Institute of Physics National Academy of Sciences of Ukraine Prospect Nauki, 46, Kiev-28, 03028, Ukraine
| | - Alma R. Morales
- Department of Chemistry University of Central Florida P.O. Box 162366, Orlando, FL 32816-2366, USA)
| | - Xiling Yue
- Department of Chemistry University of Central Florida P.O. Box 162366, Orlando, FL 32816-2366, USA)
| | - Gheorghe Luchita
- Department of Chemistry University of Central Florida P.O. Box 162366, Orlando, FL 32816-2366, USA)
| | - Olga V. Przhonska
- Institute of Physics National Academy of Sciences of Ukraine Prospect Nauki, 46, Kiev-28, 03028, Ukraine
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Sakthivel S, Punniyamurthy T. Fluorescent OFF–ON polymer chemosensor bonded alternatively with 1,4-dioctyloxybenzene and (R,R)-salen for cascade Zn2+ and chiral recognition. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.tetasy.2012.04.015] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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28
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Liu Y, Dong X, Sun J, Zhong C, Li B, You X, Liu B, Liu Z. Two-photon fluorescent probe for cadmium imaging in cells. Analyst 2012; 137:1837-45. [PMID: 22388568 DOI: 10.1039/c2an16254g] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel two-photon excited fluorescent probe for cadmium (named as TPCd) was designed and synthesized utilizing a prodan (6-acetyl-2-methoxynaphthalene) derivative as the two-photon fluorophore and an o-phenylenediamine derivative as the Cd(2+) chelator, which possessed favorable photophysical properties and good water-solubility. The probe was designed with a photoinduced electron transfer (PET) mechanism and thus was weakly fluorescent itself. After binding with Cd(2+) which blocked the PET process, the fluorescence intensity of the probe was enhanced by up to 15-fold under one-photon excitation (OPE) and 27-fold under two-photon excitation (TPE), respectively. The two-photon action cross-section (Φδ) of the TPCd-Cd complex at 740 nm reached 109 GM compared to 3.6 GM for free TPCd, indicating the promising prospect of the probe in two-photon application. TPCd chelated Cd(2+) with 1 : 1 stoichiometry, and the apparent dissociation constant (K(d)) was 6.1 × 10(-5) M for the one-photon mode and 7.2 × 10(-5) M for the two-photon mode. The probe responded to Cd(2+) over a wide linear range from 0.1 to 30 μM with a detection limit of 0.04 μM. High selectivity of the probe towards Cd(2+) was acquired in Tris-HCl/sodium phosphate buffer. The probe was pH-independent in the biologically relevant pH range and non-toxic to living cells at reasonable concentration levels, warranting its in vivo applications. Through two-photon microscopy imaging, the probe was successfully applied to detect Cd(2+) uptake in living HepG2 cells.
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Affiliation(s)
- Yongyou Liu
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, P. R. China
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Meng X, Wang S, Li Y, Zhu M, Guo Q. 6-Substituted quinoline-based ratiometric two-photon fluorescent probes for biological Zn2+ detection. Chem Commun (Camb) 2012; 48:4196-8. [DOI: 10.1039/c2cc30471f] [Citation(s) in RCA: 103] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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30
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Hao E, Meng T, Zhang M, Pang W, Zhou Y, Jiao L. Solvent dependent fluorescent properties of a 1,2,3-triazole linked 8-hydroxyquinoline chemosensor: tunable detection from zinc(II) to iron(III) in the CH3CN/H2O system. J Phys Chem A 2011; 115:8234-41. [PMID: 21702491 DOI: 10.1021/jp202700s] [Citation(s) in RCA: 104] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A triazole-containing 8-hydroxyquinoline (8-HQ) ether 2 was efficiently synthesized in two steps from the "click" strategy. Compound 2 gave a strong fluorescence (Φ = 0.21) in nonprotic solvent like CH(3)CN, and a weak fluorescence (Φ = 0.06) in protic solvent like water. In water, a more than 100 nm red shift of the fluorescence maximum was observed for compound 2 in comparison with that in CH(3)CN. This fluorescence difference may be attributed to the intermolecular photoinduced proton transfer (PPT) process involving the protic solvent water molecules. Similarly, this intermolecular PPT process was also observed in the high-water-content CH(3)CN aqueous solution (e.g., CH(3)CN/H(2)O = 5/95, v/v). The water content in the CH(3)CN/H(2)O binary solvent mixture greatly affected the fluorescence intensity (e.g., Φ = 0.06 and 0.25 when CH(3)CN/H(2)O = 5/95 and 95/5, v/v, respectively) and emission wavelength. Using this interesting property, by simple variation of the water content in the CH(3)CN aqueous solution, compound 2 was tuned from a selective "turn-on" fluorescent sensor for Zn(2+) (CH(3)CN/H(2)O = 5/95, v/v) to a ratiometric one for Zn(2+) and a selective "turn-off" one for Fe(3+) (CH(3)CN/H(2)O = 95/5, v/v) over a wide range of pH value. In high-water-content (CH(3)CN/H(2)O = 5/95, v/v) aqueous solution compound 2 shows a selective "turn-on" response toward Zn(2+), with a 10-fold enhancement in the fluorescence intensity at 428 nm and a 62 nm blue shift of the emission maximum (490 to 428 nm) due to the inhibition of intermolecular PPT process upon chelating with Zn(2+). However, in a less polar solvent (CH(3)CN/H(2)O = 95/5, v/v) in which compound 2 has high fluorescence (quantum yield =0.25), it shows a ratiometric response toward Zn(2+), with a continuous decrease of the fluorescence intensity at 399 nm and an increase at 423 nm. More interestingly, in this case, it also exhibits a very sensitive, selective, and ratiometric fluorescence quenching in the presence of Fe(3+), with an 81 nm red shift of the emission maximum (399 to 480 nm) in a wide range of pH through a metal ligand charge transfer (MLCT) effect.
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Affiliation(s)
- Erhong Hao
- Anhui Key Laboratory of Functional Molecular Solids, College of Chemistry and Material Science, Anhui Normal University, Wuhu 241000, China
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Huang C, Qu J, Qi J, Yan M, Xu G. Dicyanostilbene-Derived Two-Photon Fluorescence Probe for Free Zinc Ions in Live Cells and Tissues with a Large Two-Photon Action Cross Section. Org Lett 2011; 13:1462-5. [DOI: 10.1021/ol200146j] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Chibao Huang
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China, Department of Agricultural Engineering, Yingdong Bioengineering College, Shaoguang University, Shaoguan 512005, China, and Department of Instrument Science and Technology, Optoelectronic Technology College, Shenzhen University, Shenzhen 518060, China
| | - Junle Qu
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China, Department of Agricultural Engineering, Yingdong Bioengineering College, Shaoguang University, Shaoguan 512005, China, and Department of Instrument Science and Technology, Optoelectronic Technology College, Shenzhen University, Shenzhen 518060, China
| | - Jing Qi
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China, Department of Agricultural Engineering, Yingdong Bioengineering College, Shaoguang University, Shaoguan 512005, China, and Department of Instrument Science and Technology, Optoelectronic Technology College, Shenzhen University, Shenzhen 518060, China
| | - Meng Yan
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China, Department of Agricultural Engineering, Yingdong Bioengineering College, Shaoguang University, Shaoguan 512005, China, and Department of Instrument Science and Technology, Optoelectronic Technology College, Shenzhen University, Shenzhen 518060, China
| | - Gaixia Xu
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China, Department of Agricultural Engineering, Yingdong Bioengineering College, Shaoguang University, Shaoguan 512005, China, and Department of Instrument Science and Technology, Optoelectronic Technology College, Shenzhen University, Shenzhen 518060, China
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Sumalekshmy S, Fahrni CJ. Metal Ion-Responsive Fluorescent Probes for Two-Photon Excitation Microscopy. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2011; 23:483-500. [PMID: 28503029 PMCID: PMC5427716 DOI: 10.1021/cm1021905] [Citation(s) in RCA: 108] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Metal ion-responsive fluorescent probes are powerful tools for visualizing labile metal ion pools in live cells. To take full advantage of the benefits offered by two-photon excitation microscopy, including increased depth penetration, reduced phototoxicity, and intrinsic 3D capabilities, the photophysical properties of the probes must be optimized for nonlinear excitation. This review summarizes the challenges associated with the design of two-photon excitable fluorescent probes and labels and offers an overview on recent efforts in developing selective and sensitive reagents for the detection of metal ions in biological systems.
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Wu J, Liu W, Ge J, Zhang H, Wang P. New sensing mechanisms for design of fluorescent chemosensors emerging in recent years. Chem Soc Rev 2011; 40:3483-95. [DOI: 10.1039/c0cs00224k] [Citation(s) in RCA: 1421] [Impact Index Per Article: 109.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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