1
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Lin HY, Yao CY, Li J, Nimal Gunaratne HQ, Singh W, Huang M, Anslyn EV, de Silva AP. Remarkably Selective Binding, Behavior Modification, and Switchable Release of (Bipyridine) 3Ru(II) vis-à-vis (Phenanthroline) 3Ru(II) by Trimeric Cyclophanes in Water. JACS AU 2023; 3:2257-2268. [PMID: 37654579 PMCID: PMC10466343 DOI: 10.1021/jacsau.3c00279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 07/17/2023] [Accepted: 07/19/2023] [Indexed: 09/02/2023]
Abstract
A recurring dream of molecular recognition is to create receptors that distinguish between closely related targets with sufficient accuracy, especially in water. The more useful the targets, the more valuable the dream becomes. We now present multianionic trimeric cyclophane receptors with a remarkable ability to bind the iconic (bipyridine)3Ru(II) (with its huge range of applications) while rejecting the nearly equally iconic (phenanthroline)3Ru(II). These receptors not only selectively capture (bipyridine)3Ru(II) but also can be redox-switched to release the guest. 1D- and 2D(ROESY)-NMR spectroscopy, luminescence spectroscopy, and molecular modeling enabled this discovery. This outcome allows the control of these applications, e.g., as a photocatalyst or as a luminescent sensor, by selectively hiding or exposing (bipyridine)3Ru(II). Overall, a 3D nanometric object is selected, picked-up, and dropped-off by a discrete molecular host. The multianionic receptors protect excited states of these metal complexes from phenolate quenchers so that the initial step in photocatalytic phenolate oxidation is retarded by nearly 2 orders of magnitude. This work opens the way for (bipyridine)3Ru(II) to be manipulated in the presence of other functional nano-objects so that many of its applications can be commanded and controlled. We have a cyclophane-based toolkit that can emulate some aspects of proteins that selectively participate in cell signaling and metabolic pathways by changing shape upon environmental commands being received at a location remote from the active site.
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Affiliation(s)
- Hong-Yu Lin
- School
of Chemistry and Chemical Engineering, Queen’s
University, Belfast BT9 5AG, United
Kingdom
| | - Chao-Yi Yao
- School
of Chemistry and Chemical Engineering, Queen’s
University, Belfast BT9 5AG, United
Kingdom
- School
of Chemistry and Chemical Engineering, Central
South University, Yuelu
District, Changsha, Hunan
Province 410006, P.R. China
| | - Jialu Li
- School
of Chemistry and Chemical Engineering, Queen’s
University, Belfast BT9 5AG, United
Kingdom
| | - H. Q. Nimal Gunaratne
- School
of Chemistry and Chemical Engineering, Queen’s
University, Belfast BT9 5AG, United
Kingdom
| | - Warispreet Singh
- School
of Chemistry and Chemical Engineering, Queen’s
University, Belfast BT9 5AG, United
Kingdom
- Hub
for Biotechnology in the Built Environment, Northumbria University, Newcastle
upon Tyne NE1 8ST, United Kingdom
| | - Meilan Huang
- School
of Chemistry and Chemical Engineering, Queen’s
University, Belfast BT9 5AG, United
Kingdom
| | - Eric V. Anslyn
- School
of Chemistry and Chemical Engineering, Queen’s
University, Belfast BT9 5AG, United
Kingdom
- Department
of Chemistry, University of Texas at Austin, 100 E 24th Street, Norman Hackerman
Building (Room 114A), Austin, Texas 78712, United States
| | - A. Prasanna de Silva
- School
of Chemistry and Chemical Engineering, Queen’s
University, Belfast BT9 5AG, United
Kingdom
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2
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Agius N, Magri DC. Cinchona alkaloids - acid, anion-driven fluorescent INHIBIT logic gates with a receptor 1-fluorophore-spacer-receptor 2 format and PET and ICT mechanisms. RSC Adv 2023; 13:13505-13510. [PMID: 37143912 PMCID: PMC10153600 DOI: 10.1039/d3ra02704j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Accepted: 04/25/2023] [Indexed: 05/06/2023] Open
Abstract
The fluorescent natural products, quinine, quinidine, cinchonine and cinchonidine are demonstrated as H+-enabled, halide-disabled (Cl-, Br- or I-) INHIBIT and INHIBIT-OR combinatorial logic gates in water. More fluorescent natural products with intrinsic logic properties await to be discovered.
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Affiliation(s)
- Nicola' Agius
- Department of Chemistry, Faculty of Science, University of Malta Msida MSD 2080 Malta
| | - David C Magri
- Department of Chemistry, Faculty of Science, University of Malta Msida MSD 2080 Malta
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3
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Sonowal K, Saikia L. Functional groups assisted-photoinduced electron transfer-mediated highly fluorescent metal-organic framework quantum dot composite for selective detection of mercury (II) in water. J Environ Sci (China) 2023; 126:531-544. [PMID: 36503779 DOI: 10.1016/j.jes.2022.05.032] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 05/19/2022] [Accepted: 05/20/2022] [Indexed: 06/17/2023]
Abstract
The presence of toxic mercury (II) in water is an ever-growing problem on earth that has various harmful effect on human health and aquatic living organisms. Therefore, detection of mercury (II) in water is very much crucial and several researches are going on in this topic. Metal-organic frameworks (MOFs) are considered as an effective device for sensing of toxic heavy metal ions in water. The tunable functionalities with large surface area of highly semiconducting MOFs enhance its activity towards fluorescence sensing. In this study, we are reporting one highly selective and sensitive luminescent sensor for the detection of mercury (II) in water. A series of binary MOF composites were synthesized using in-situ solvothermal synthetic technique for fluorescence sensing of Hg2+ in water. The well-distributed graphitic carbon nitride quantum dots on porous zirconium-based MOF improve Hg2+ sensing activity in water owing to their great electronic and optical properties. The binary MOF composite (2) i.e., the sensor exhibited excellent limit of detection (LOD) value of 2.4 nmol/L for Hg2+. The sensor also exhibited excellent performance for mercury (II) detection in real water samples. The characterizations of the synthesized materials were done using various spectroscopic techniques and the fluorescence sensing mechanism was studied.
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Affiliation(s)
- Karanika Sonowal
- Advanced Materials Group, Materials Sciences and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat, Assam 785006, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Lakshi Saikia
- Advanced Materials Group, Materials Sciences and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat, Assam 785006, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.
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4
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Gauci G, Magri DC. Solvent-polarity reconfigurable fluorescent 4-piperazino- N-aryl-1,8-naphthalimide crown ether logic gates. RSC Adv 2022; 12:35270-35278. [PMID: 36540226 PMCID: PMC9732761 DOI: 10.1039/d2ra07568g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Accepted: 11/30/2022] [Indexed: 09/19/2023] Open
Abstract
Four compounds 1-4 were designed and synthesised, comprising a 4-amino-N-aryl-1,8-naphthalimide fluorophore, a piperazine receptor, and an aryl group, as fluorescent logic gates. At the imide position, the substituent is phenyl (1), 1,2-dimethoxyphenyl (2), benzo-15-crown-5 (3), or benzo-18-crown-6 (4). Molecules 1 and 2 are constructed according to a fluorophore-spacer-receptor format, while 3 and 4 are engineered according to a receptor1-spacer1-fluorophore-spacer2-receptor2 format based on photoinduced electron transfer and internal charge transfer mechanisms. The compounds were studied in water, water/methanol mixtures of different ratios, and methanol by UV-visible absorption and steady-state fluorescence spectroscopy, as a function of pH, metal ions and solvent polarity. The excited state of 1-4 is 8.4 ± 0.2 in water, 7.6 ± 0.1 in 1 : 1 (v/v) water/methanol, and 7.1 ± 0.3 in methanol. The of 3 in water is 0.92 and the and of 4 in water are 2.3 and 2.9. 1H NMR data in D2O and CD3OD confirm H+ interaction at the piperazine moiety, and Na+ and Ba2+ binding at the benzo-15-crown-5 and benzo-18-crown-6 moieties of 3 and 4. By altering the solvent polarity, the fluorescent logic gates can be reconfigured between TRANSFER logic and AND logic. Molecules with polarity reconfigurable logic could be useful tools for probing the microenvironment of cellular membranes and protein interfaces.
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Affiliation(s)
- Gabriel Gauci
- Department of Chemistry, Faculty of Science, University of Malta Msida MSD 2080 Malta
| | - David C Magri
- Department of Chemistry, Faculty of Science, University of Malta Msida MSD 2080 Malta
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5
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Dixit SJN, Chacko S, Manna B, Agarwal N. Ultrafast Dynamics of Photoinduced Electron Transfer in Bay-Aryl-Substituted Perylene Diimide Derivatives. J Phys Chem B 2022; 126:5908-5919. [PMID: 35894852 DOI: 10.1021/acs.jpcb.2c03952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Blends of donors and acceptors have been widely used in bulk-heterojunction solar cells to have exciton formation and charge separation by photoinduced electron transfer (PET). In this work, we have synthesized perylene diimide (PDI)-based materials having different aryl substituents at the bay positions (4-Anisyl-PDI, CBZ-N-Ph-PDI, and 4-Pyridyl-PDI) to understand the excited-state dynamics of electron transfer. The detailed photophysics was studied using steady-state as well as ultrafast dynamics of the excited states in different solvents. CBZ-N-Ph-PDI showed tremendous effects of the solvent on the electronic properties compared with the other two derivatives. The emission quantum yield of CBZ-N-Ph-PDI decreases drastically in dichloromethane and other polar solvents, indicating strong electron transfer. DFT calculations showed that in CBZ-N-Ph-PDI the HOMO is centered mostly on the N-phenylcarbazole and the LUMO is on the electron-poor PDI moieties. In addition, the energy levels of the HOMO and HOMO-1 in CBZ-N-Ph-PDI are estimated to be identical. The free energy change for charge separation (ΔGCS) was calculated using electrochemical and photophysical data and found to be negative for CBZ-N-Ph-PDI. The ground- and excited-state dipole moment ratios suggest that the excited state of 4-Pyridyl-PDI (1.90) is less polar than that of 4-Anisyl-PDI (3.67), which provides an idea of the lower possibility of charge separation in 4-Anisyl-PDI and 4-Pyridyl-PDI. Ultrafast photodynamics studies of 4-Anisyl-PDI, CBZ-N-Ph-PDI, and 4-Pyridyl-PDI showed fast electron transfer only in CBZ-N-Ph-PDI and not in the other PDI derivatives. It was also observed that electron transfer is faster in DCM and THF than in toluene. Ultrafast dynamics studies showed the presence of an equilibrium between electron transfer and decay from the singlet excited state. Ultrafast studies also showed the features of the N-phenylcarbazole cation and PDI anion, further confirming the intramolecular electron transfer in CBZ-N-Ph-PDI.
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Affiliation(s)
- Swati J N Dixit
- School of Chemical Sciences, UM-DAE Centre for Excellence in Basic Sciences, University of Mumbai, Kalina, Santacruz (E), Mumbai 400098, India
| | - Sajeev Chacko
- Department of Physics, University of Mumbai, Kalina, Santacruz (E), Mumbai 400098, India
| | - Biswajit Manna
- Radiation and Photochemistry Division, Bhabha Atomic Research Center, Trombay, Mumbai 400085, India
| | - Neeraj Agarwal
- School of Chemical Sciences, UM-DAE Centre for Excellence in Basic Sciences, University of Mumbai, Kalina, Santacruz (E), Mumbai 400098, India
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6
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Sammut D, Bugeja N, Szaciłowski K, Magri DC. Molecular engineering of fluorescent bichromophore 1,3,5-triaryl-Δ 2-pyrazoline and 4-amino-1,8-naphthalimide molecular logic gates. NEW J CHEM 2022. [DOI: 10.1039/d2nj02422e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Emissive bichromophoric solvatochromatic molecules are introduced as a new platform for the development of fluorescent molecular logic gates.
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Affiliation(s)
- Darlene Sammut
- Department of Chemistry, Faculty of Science, University of Malta, Msida, MSD2080, Malta
| | - Nathalie Bugeja
- Department of Chemistry, Faculty of Science, University of Malta, Msida, MSD2080, Malta
| | - Konrad Szaciłowski
- AGH University of Science and Technology, Academic Centre for Materials and Nanotechnology, Mickiewicza 30, 30-059 Kraków, Poland
| | - David C. Magri
- Department of Chemistry, Faculty of Science, University of Malta, Msida, MSD2080, Malta
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7
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Johnson AD, Buhagiar JA, Magri DC. 4-Amino-1,8-naphthalimide-ferrocene conjugates as potential multi-targeted anticancer and fluorescent cellular imaging agents. RSC Med Chem 2021; 12:2060-2064. [PMID: 35028564 DOI: 10.1039/d1md00246e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Accepted: 10/21/2021] [Indexed: 11/21/2022] Open
Abstract
Herein we present eight ferrocenyl 4-amino-1,8-naphthalimides. Designed as fluorescent logic gates for acidity and oxidisability, the molecules have been repurposed as anti-proliferation and cellular imaging agents. The compounds were studied in vitro against MCF-7 and K562 cancer cell lines by the MTT method. Compounds with protonable secondary amines tended to exhibit greater cytotoxicity than those with tertiary amines. Compounds with no measurable GI50 values within a 24 hour time window, as well as at shorter exposure times, may be suitable as fluorescent cellular imaging probes.
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Affiliation(s)
- Alex D Johnson
- Department of Chemistry, Faculty of Science, University of Malta Msida MSD 2080 Malta
| | - Joseph A Buhagiar
- Department of Biology, Faculty of Science, University of Malta Msida MSD 2080 Malta
| | - David C Magri
- Department of Chemistry, Faculty of Science, University of Malta Msida MSD 2080 Malta
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8
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Deng HH, Huang KY, He SB, Xue LP, Peng HP, Zha DJ, Sun WM, Xia XH, Chen W. Rational Design of High-Performance Donor-Linker-Acceptor Hybrids Using a Schiff Base for Enabling Photoinduced Electron Transfer. Anal Chem 2020; 92:2019-2026. [PMID: 31854983 DOI: 10.1021/acs.analchem.9b04434] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Donor-linker-acceptor (D-L-A)-based photoinduced electron transfer (PET) has been frequently used for the construction of versatile fluorescent chemo/biosensors. However, sophisticated and tedious processes are generally required for the synthesis of these probes, which leads to poor design flexibility. In this work, by exploiting a Schiff base as a linker unit, a covalently bound D-L-A system was established and subsequently utilized for the development of a PET sensor. Cysteamine (Cys) and N-acetyl-l-cysteine (NAC) costabilized gold nanoclusters (Cys/NAC-AuNCs) were synthesized and adopted as an electron acceptor, and pyridoxal phosphate (PLP) was selected as an electron donor. PLP can form a Schiff base (an aldimine) with the primary amino group of Cys/NAC-AuNC through its aldehyde group and thereby suppresses the fluorescence of Cys/NAC-AuNC. The Rehm-Weller formula results and a HOMO-LUMO orbital study revealed that a reductive PET mechanism is responsible for the observed fluorescence quenching. Since the pyridoxal (PL) produced by the acid phosphatase (ACP)-catalyzed cleavage of PLP has a weak interaction with Cys/NAC-AuNC, a novel turn-on fluorescent method for selective detection of ACP was successfully realized. To the best of our knowledge, this is the first example of the development of a covalently bound D-L-A system for fluorescent PET sensing of enzyme activity based on AuNC nanoprobes using a Schiff base.
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Affiliation(s)
- Hao-Hua Deng
- Higher Educational Key Laboratory for Nano Biomedical Technology of Fujian Province, Department of Pharmaceutical Analysis , Fujian Medical University , Fuzhou , Fujian 350004 , China
| | - Kai-Yuan Huang
- Higher Educational Key Laboratory for Nano Biomedical Technology of Fujian Province, Department of Pharmaceutical Analysis , Fujian Medical University , Fuzhou , Fujian 350004 , China
| | - Shao-Bin He
- Higher Educational Key Laboratory for Nano Biomedical Technology of Fujian Province, Department of Pharmaceutical Analysis , Fujian Medical University , Fuzhou , Fujian 350004 , China
| | - Li-Ping Xue
- Higher Educational Key Laboratory for Nano Biomedical Technology of Fujian Province, Department of Pharmaceutical Analysis , Fujian Medical University , Fuzhou , Fujian 350004 , China
| | - Hua-Ping Peng
- Higher Educational Key Laboratory for Nano Biomedical Technology of Fujian Province, Department of Pharmaceutical Analysis , Fujian Medical University , Fuzhou , Fujian 350004 , China
| | - Dai-Jun Zha
- Fujian Key Laboratory of Drug Target Discovery and Structural and Functional Research, School of Pharmacy , Fujian Medical University , Fuzhou , Fujian 350004 , China
| | - Wei-Ming Sun
- Fujian Key Laboratory of Drug Target Discovery and Structural and Functional Research, School of Pharmacy , Fujian Medical University , Fuzhou , Fujian 350004 , China
| | - Xing-Hua Xia
- State Key Laboratory of Analytical Chemistry for Life Science and Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering , Nanjing University , Nanjing , Jiangsu 210093 , China
| | - Wei Chen
- Higher Educational Key Laboratory for Nano Biomedical Technology of Fujian Province, Department of Pharmaceutical Analysis , Fujian Medical University , Fuzhou , Fujian 350004 , China
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9
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Scerri GJ, Spiteri JC, Mallia CJ, Magri DC. A lab-on-a-molecule with an enhanced fluorescent readout on detection of three chemical species. Chem Commun (Camb) 2019; 55:4961-4964. [DOI: 10.1039/c9cc00924h] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The first naphthalimide-based three-input AND logic gate detects a congregation of three cations in aqueous methanol with a 25-fold enhanced fluorescence.
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Affiliation(s)
- Glenn J. Scerri
- Department of Chemistry
- Faculty of Science
- University of Malta
- Msida
- Malta
| | - Jake C. Spiteri
- Department of Chemistry
- Faculty of Science
- University of Malta
- Msida
- Malta
| | - Carl J. Mallia
- Department of Chemistry
- Faculty of Science
- University of Malta
- Msida
- Malta
| | - David C. Magri
- Department of Chemistry
- Faculty of Science
- University of Malta
- Msida
- Malta
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10
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Dwivedi BK, Singh RS, Ali A, Sharma V, Mobin SM, Pandey DS. AIE active piperazine appended naphthalimide-BODIPYs: photophysical properties and applications in live cell lysosomal tracking. Analyst 2019; 144:331-341. [DOI: 10.1039/c8an01390j] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Piperazine appended naphthalimide-BODIPYs (NPB1–NPB4) exhibiting solvatochromism, aggregation-induced emission, and high selectivity towards lysosomal pH in living cells have been described.
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Affiliation(s)
| | - Roop Shikha Singh
- Department of Chemistry
- Institute of Science
- Banaras Hindu University
- Varanasi 221 005
- India
| | - Afsar Ali
- Department of Chemistry
- Institute of Science
- Banaras Hindu University
- Varanasi 221 005
- India
| | - Vinay Sharma
- School of Basic Sciences
- Discipline of Chemistry
- Indian Institute of Technology Indore
- Indore – 453 552
- India
| | - Shaikh M. Mobin
- School of Basic Sciences
- Discipline of Chemistry
- Indian Institute of Technology Indore
- Indore – 453 552
- India
| | - Daya Shankar Pandey
- Department of Chemistry
- Institute of Science
- Banaras Hindu University
- Varanasi 221 005
- India
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11
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Recent Progress on the Evolution of Pourbaix Sensors: Molecular Logic Gates for Protons and Oxidants. CHEMOSENSORS 2018. [DOI: 10.3390/chemosensors6040048] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Recent progress in the area of molecular logic, in particular molecules capable of sensing for acidity and oxidizability, are gathered together in this short review. Originally proposed as AND logic gates that provide a high fluorescence output when simultaneously protonated and oxidized, the concept has been extended from two-input to three-input variants and to include molecules that function as INHIBIT logic gates. Photochemical concepts such as photoinduced electron transfer (PET) and internal charge transfer (ICT) are exploited as favorite design concepts. This review highlights the evolution of Pourbaix sensors with anthracene, pyrazoline, and naphthalimide fluorophores. Future applications abound in various disciplines from corrosion science, material science, geochemistry to cell imaging.
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12
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Vella Refalo M, Spiteri JC, Magri DC. Covalent attachment of a fluorescent ‘Pourbaix sensor’ onto a polymer bead for sensing in water. NEW J CHEM 2018. [DOI: 10.1039/c8nj03224f] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
A covalently immobilised 4-amino-1,8-naphthalimide AND logic gate, responsive to acidity and oxidisability, emits a green fluorescence on a Tentagel solid support.
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Affiliation(s)
| | - Jake C. Spiteri
- Department of Chemistry
- Faculty of Science
- University of Malta
- MSD 2080
- Malta
| | - David C. Magri
- Department of Chemistry
- Faculty of Science
- University of Malta
- MSD 2080
- Malta
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13
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Miao J, Huo Y, Shi H, Fang J, Wang J, Guo W. A Si-rhodamine-based near-infrared fluorescent probe for visualizing endogenous peroxynitrite in living cells, tissues, and animals. J Mater Chem B 2018; 6:4466-4473. [DOI: 10.1039/c8tb00987b] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
An aromatic tertiary amine-functionalized Si-rhodamine dye has been exploited as a near-infrared fluorescent probe for visualizing endogenous peroxynitrite in living cells, tissues, and mice.
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Affiliation(s)
- Junfeng Miao
- School of Chemistry and Chemical Engineering
- Shanxi University
- Taiyuan 030006
- China
| | - Yingying Huo
- School of Chemistry and Chemical Engineering
- Shanxi University
- Taiyuan 030006
- China
| | - Hu Shi
- School of Chemistry and Chemical Engineering
- Shanxi University
- Taiyuan 030006
- China
- Institute of Molecular Science
| | - Junru Fang
- School of Chemistry and Chemical Engineering
- Shanxi University
- Taiyuan 030006
- China
| | - Juanjuan Wang
- Scientific Instrument Center
- Shanxi University
- Taiyuan 030006
- China
| | - Wei Guo
- School of Chemistry and Chemical Engineering
- Shanxi University
- Taiyuan 030006
- China
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14
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Georgiev NI, Dimitrova MD, Mavrova AT, Bojinov VB. Synthesis, fluorescence-sensing and molecular logic of two water-soluble 1,8-naphthalimides. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 183:7-16. [PMID: 28432919 DOI: 10.1016/j.saa.2017.04.016] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Revised: 04/08/2017] [Accepted: 04/14/2017] [Indexed: 06/07/2023]
Abstract
Two novel highly water-soluble fluorescence sensing 1,8-naphthalimides are synthesized and investigated. The novel compounds are designed on the "fluorophore-receptor1-spacer-receptor2" model as a molecular fluorescence probe for determination of cations and anions in 100% aqueous media. The novel probes comprising N-imide and N-phenylpiperazine or morpholine substituents are capable to operate simultaneously via ICT and PET signaling mechanism as a function of pH and to recognize selectively Cu2+ and Hg2+ over the other representative metal ions. Due to the remarkable fluorescence changes in the presence of protons, hydroxyl anions, Hg2+ and Cu2+, INH and doubly disabled INH logic gates are executed and the systems are able to act as a single output combinatorial logic circuit with four chemical inputs.
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Affiliation(s)
- Nikolai I Georgiev
- Department of Organic Synthesis, University of Chemical Technology and Metallurgy, 8 Kliment Ohridsky Str., 1756 Sofia, Bulgaria
| | - Margarita D Dimitrova
- Department of Organic Synthesis, University of Chemical Technology and Metallurgy, 8 Kliment Ohridsky Str., 1756 Sofia, Bulgaria
| | - Anelia Ts Mavrova
- Department of Organic Synthesis, University of Chemical Technology and Metallurgy, 8 Kliment Ohridsky Str., 1756 Sofia, Bulgaria
| | - Vladimir B Bojinov
- Department of Organic Synthesis, University of Chemical Technology and Metallurgy, 8 Kliment Ohridsky Str., 1756 Sofia, Bulgaria.
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15
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Wałęsa-Chorab M, Skene WG. Visible-to-NIR Electrochromic Device Prepared from a Thermally Polymerizable Electroactive Organic Monomer. ACS APPLIED MATERIALS & INTERFACES 2017; 9:21524-21531. [PMID: 28605193 DOI: 10.1021/acsami.7b02903] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A monomer (1) consisting of a benzothiadiazole core flanked by two triphenylamines and two styrene pendant moieties was prepared. The monomer was fluorescent with its emission spanning 145 nm in the visible, contingent on the organic solvent used for the measurement. In addition to its positive solvatochromism, the absolute fluorescence quantum yield (Φfl) was consistently >20% with values >80% being measured in hexane, toluene, diethyl ether, and toluene. 1 could be reversibly oxidized with an oxidation potential of 880 mV vs SCE. The monomer could be immobilized on ITO-coated glass substrates. The resulting 425 nm thick immobilized film (poly-1) was 15% thinner than the monomer coating deposited by spray- and spin-coating. The electroactive film did not delaminate from the electrode upon either washing or cycling electrochemically between its oxidized and neutral states. Its absorption at 460 nm bleached upon electrochemical oxidation with the formation of a strong absorption at 880 nm and in the NIR, similar to 1. The perceived reversible color change with applied potential switched between yellow and gray. The fluorescence intensity of poly-1 could be switched with applied potentials. A passive transmissive device prepared from poly-1 was both electrochromic and fluorochromic, exhibiting reversible color change and fluorescence quenching.
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Affiliation(s)
- Monika Wałęsa-Chorab
- Laboratoire de caractérisation photophysique des matériaux conjugués Département de chimie, Pavillon JA Bombardier, Université de Montréal , CP 6128, succ. Centre-ville, Montréal, Québec, Canada H3C 3J7
| | - W G Skene
- Laboratoire de caractérisation photophysique des matériaux conjugués Département de chimie, Pavillon JA Bombardier, Université de Montréal , CP 6128, succ. Centre-ville, Montréal, Québec, Canada H3C 3J7
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16
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Redox-Enabled, pH-Disabled Pyrazoline-Ferrocene INHIBIT Logic Gates. Chemphyschem 2017; 18:1742-1745. [DOI: 10.1002/cphc.201700345] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2017] [Revised: 05/23/2017] [Indexed: 11/07/2022]
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17
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Affiliation(s)
- David C. Magri
- Faculty of Science, Department of Chemistry, University of Malta, Msida, Malta
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18
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Magri DC, Johnson AD, Spiteri JC. Fluorescent Photoinduced Electron Transfer (PET) Logic Gates for Acidity (pH) and Redox Potential (pE). J Fluoresc 2016; 27:551-559. [DOI: 10.1007/s10895-016-1982-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Accepted: 11/08/2016] [Indexed: 11/29/2022]
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19
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An iridium(III) complex as a versatile platform for molecular logic gates: an integrated full subtractor and 1:2 demultiplexer. Anal Bioanal Chem 2016; 408:7077-83. [DOI: 10.1007/s00216-016-9443-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2015] [Revised: 02/18/2016] [Accepted: 02/22/2016] [Indexed: 02/02/2023]
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20
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Johnson AD, Paterson KA, Spiteri JC, Denisov SA, Jonusauskas G, Tron A, McClenaghan ND, Magri DC. Water-soluble naphthalimide-based ‘Pourbaix sensors’: pH and redox-activated fluorescent AND logic gates based on photoinduced electron transfer. NEW J CHEM 2016. [DOI: 10.1039/c6nj02023b] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Naphthalimide-based ‘Pourbaix sensors’ for redox potential and pH fluoresce with a lifetime of 8.5 ns while photoinduced electron transfer occurs on a time scale of 20 ps.
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Affiliation(s)
- Alex D. Johnson
- Department of Chemistry
- Faculty of Science
- University of Malta
- Msida
- Malta
| | - Kyle A. Paterson
- Department of Chemistry
- Faculty of Science
- University of Malta
- Msida
- Malta
| | - Jake C. Spiteri
- Department of Chemistry
- Faculty of Science
- University of Malta
- Msida
- Malta
| | - Sergey A. Denisov
- Institut des Sciences Moléculaires
- CNRS UMR 5255
- University of Bordeaux
- 33405 Talence
- France
| | - Gediminas Jonusauskas
- Laboratoire Ondes et Matières d'Aquitaine
- CNRS UMR 5798
- University of Bordeaux
- 33405 Talence
- France
| | - Arnaud Tron
- Institut des Sciences Moléculaires
- CNRS UMR 5255
- University of Bordeaux
- 33405 Talence
- France
| | - Nathan D. McClenaghan
- Institut des Sciences Moléculaires
- CNRS UMR 5255
- University of Bordeaux
- 33405 Talence
- France
| | - David C. Magri
- Department of Chemistry
- Faculty of Science
- University of Malta
- Msida
- Malta
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