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Cholesteric Molecular Tweezer Artificial Receptor for Rapid and Highly Selective Detection of Ag + in Food Samples. Molecules 2021; 26:molecules26226919. [PMID: 34834011 PMCID: PMC8617623 DOI: 10.3390/molecules26226919] [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: 09/22/2021] [Revised: 10/29/2021] [Accepted: 11/09/2021] [Indexed: 11/16/2022] Open
Abstract
Chiral cholesteric molecular tweezer 7a was synthesized, and its recognition properties for Ag+, Al3+, Ca2+ etc., were investigated by UV and fluorescence spectra. The results showed that in ethanol/Tris (1/1, v/v, pH 7.0) buffer solution, the host molecular tweezer 7a had a specific recognition ability for Ag+, the detection limit was up to 1 × 10−6 mol/L, and other metal ions had little effect on Ag+ recognition. At the same time, the naked-eye detection of Ag+ was realized by the light red color of the complex solution. Furthermore, the mechanism of recognition of Ag+ by molecular tweezer 7a was studied by a nuclear magnetic titration test and computer molecular simulation, and a rapid detection method of Ag+ using host molecular tweezer 7a was established. Through the determination of Ag+ in milk powder, quinoa and other food samples, it was proved that this novel method had a good application prospect for the detection of Ag+ in food.
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West MES, Yao CY, Melaugh G, Kawamoto K, Uchiyama S, de Silva AP. Fluorescent Molecular Logic Gates Driven by Temperature and by Protons in Solution and on Solid. Chemistry 2021; 27:13268-13274. [PMID: 34233035 DOI: 10.1002/chem.202101892] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Indexed: 12/22/2022]
Abstract
Temperature-driven fluorescent NOT logic is demonstrated by exploiting predissociation in a 1,3,5-trisubstituted Δ2 -pyrazoline on its own and when grafted onto silica microparticles. Related Δ2 -pyrazolines become proton-driven YES and NOT logic gates on the basis of fluorescent photoinduced electron transfer (PET) switches. Additional PASS 1 and YES+PASS 1 logic gates on silica are also demonstrated within the same family. Beside these small-molecule systems, a polymeric molecular thermometer based on a benzofurazan-derivatized N-isopropylacrylamide copolymer is attached to silica to produce temperature-driven fluorescent YES logic.
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Affiliation(s)
- Matthew E S West
- School of Chemistry and Chemical Engineering, Queen's University, Belfast, BT9 5AG, UK
| | - Chao-Yi Yao
- School of Chemistry and Chemical Engineering, Queen's University, Belfast, BT9 5AG, UK
| | - Gavin Melaugh
- School of Chemistry and Chemical Engineering, Queen's University, Belfast, BT9 5AG, UK
- School of Physics and Astronomy, The University of Edinburgh, Edinburgh, EH9 3FD, UK
| | - Kyoko Kawamoto
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Seiichi Uchiyama
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo Bunkyo-ku, Tokyo, 113-0033, Japan
| | - A Prasanna de Silva
- School of Chemistry and Chemical Engineering, Queen's University, Belfast, BT9 5AG, UK
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Magri DC. Logical sensing with fluorescent molecular logic gates based on photoinduced electron transfer. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2020.213598] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Sambath K, Liu X, Wan Z, Hutnik L, Belfield KD, Zhang Y. Potassium Ion Fluorescence Probes: Structures, Properties and Bioimaging. CHEMPHOTOCHEM 2020. [DOI: 10.1002/cptc.202000236] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Karthik Sambath
- Department of Chemistry and Environmental Science College of Science and Liberal Arts New Jersey Institute of Technology 323 Martin Luther King Jr. Blvd. Newark NJ 07102 USA
| | - Xiangshan Liu
- Department of Chemistry and Environmental Science College of Science and Liberal Arts New Jersey Institute of Technology 323 Martin Luther King Jr. Blvd. Newark NJ 07102 USA
| | - Zhaoxiong Wan
- Department of Chemistry and Environmental Science College of Science and Liberal Arts New Jersey Institute of Technology 323 Martin Luther King Jr. Blvd. Newark NJ 07102 USA
| | - Lauren Hutnik
- Department of Chemistry and Environmental Science College of Science and Liberal Arts New Jersey Institute of Technology 323 Martin Luther King Jr. Blvd. Newark NJ 07102 USA
| | - Kevin D. Belfield
- Department of Chemistry and Environmental Science College of Science and Liberal Arts New Jersey Institute of Technology 323 Martin Luther King Jr. Blvd. Newark NJ 07102 USA
| | - Yuanwei Zhang
- Department of Chemistry and Environmental Science College of Science and Liberal Arts New Jersey Institute of Technology 323 Martin Luther King Jr. Blvd. Newark NJ 07102 USA
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Maeda H, Nakamura K, Furuyama T, Segi M. (1,3)Pyrenophanes containing crown ether moieties as fluorescence sensors for metal and ammonium ions. Photochem Photobiol Sci 2019; 18:2397-2410. [PMID: 31347646 DOI: 10.1039/c9pp00239a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Crown ether containing (1,3)pyrenophanes 1-6 were synthesized, and UV absorption and fluorescence spectroscopic studies were carried out to determine their abilities to form complexes with metal and ammonium ions. The fluorescence spectra of 1.0 × 10-5 M solutions of 1, 2, 4 and 6 in 1 : 1 v/v CH2Cl2 : CH3CN were comprised of both monomer and intramolecular excimer emission bands, while only monomer emission bands were present in the fluorescence spectra of 3 and 5. The intensities of the intramolecular excimer emission bands of 1, 2, 4 and 6 in 1 : 1 v/v CH2Cl2 : CH3CN decreased and those of the monomer emission increased in conjunction with the existence of isoemissive points upon the addition of increasing concentrations of various metal perchlorates. The fluorescence spectral changes were dependent on the sizes of crown ether rings and metal ions and, as such, they reflected equilibrium constants for the formation of metal-crown ether complexes. Addition of n-Bu2NH2+PF6- or (PhCH2)2NH2+PF6- to the solutions of the (1,3)pyrenophane linked crown ethers, which brought about similar fluorescence spectral changes, led to the formation of pseudo-rotaxanes as was evidenced by an analysis of 1H NMR spectra and Job's plots. The fluorescence changes of 1 occurred during 5 cycles of repetitive addition and removal of Ba2+. The ratio of intensities of the monomer to the intramolecular excimer emission bands of 1, 2, 4 and 6 increased as the temperature decreased. Based on the experimental observations and the results of DFT calculations, it is concluded that the (1,3)pyrenophanes exist in solution as equilibrium mixtures of anti monomer emitting and syn intramolecular excimer emitting conformers and the equilibrium favors the anti form when the crown ether moieties form complexes with metal or ammonium ions.
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Affiliation(s)
- Hajime Maeda
- Division of Material Chemistry, Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa, Ishikawa 920-1192, Japan.
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Maeda H, Tanaka K, Aratani M, Segi M. Ethynylpyrene Linked Benzocrown Ethers as Fluorescent Sensors for Metal Ions. Photochem Photobiol 2018; 95:762-772. [PMID: 30536779 DOI: 10.1111/php.13071] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Accepted: 12/06/2018] [Indexed: 12/24/2022]
Abstract
Substances containing ethynylpyrenes linked to either one or four benzocrown ethers were synthesized, and their absorption and fluorescence spectroscopic responses to metal ions were assessed. Addition of metal perchlorates to solutions of these substances promotes short wavelength shifts in their absorption and fluorescence maxima and increases in their fluorescence intensities. The magnitudes of the fluorescence intensity increases are dependent on the ring size and number of the crown ether and the nature of the metal cation. Association constants for complex formation were calculated using fluorescence intensity versus concentration data. Analysis using Job's plots showed that the substances containing one benzocrown ether moiety form 1:1 complexes with metal ions. Results of experiments employing repeated addition and removal of Mg(ClO4 )2 demonstrate that the ON-OFF fluorescence response can be repeated at least three times. Results of molecular orbital calculations show that complexation with metal ions lowers the energies of both the π and π* levels of the ethynylpyrene moiety and that in some cases the vacant orbital on the metal becomes the LUMO of the complex. An explanation of the spectroscopic changes promoted by metal ions is proposed in terms of electrostatic repulsion and structural regulation.
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Affiliation(s)
- Hajime Maeda
- Division of Material Chemistry, Graduate School of Natural Science and Technology, Kanazawa University, Kanazawa, Ishikawa, 920-1192, Japan
| | - Kazuhiro Tanaka
- Division of Material Chemistry, Graduate School of Natural Science and Technology, Kanazawa University, Kanazawa, Ishikawa, 920-1192, Japan
| | - Mona Aratani
- Division of Material Chemistry, Graduate School of Natural Science and Technology, Kanazawa University, Kanazawa, Ishikawa, 920-1192, Japan
| | - Masahito Segi
- Division of Material Chemistry, Graduate School of Natural Science and Technology, Kanazawa University, Kanazawa, Ishikawa, 920-1192, Japan
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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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Bumagina NA, Antina EV, Nikonova AY, Berezin MB, Ksenofontov AA, Vyugin AI. A New Sensitive and Selective Off-On Fluorescent Zn 2+ Chemosensor Based on 3,3',5,5'-Tetraphenylsubstituted Dipyrromethene. J Fluoresc 2016; 26:1967-1974. [PMID: 27481502 DOI: 10.1007/s10895-016-1890-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Accepted: 07/19/2016] [Indexed: 11/27/2022]
Abstract
3,3',5,5'-Tetraphenyl-2,2'-dipyrromethene was described as a highly sensitive and selective Off-on fluorescent colorimetric chemosensor for Zn2+ based on the chelation-enhanced fluorescence (CHEF) effect. The reaction of dipyrromethene ligand with Zn2+ induces the formation of the [ZnL2] complex, which exhibits the increasing fluorescence in 120 fold compared with ligand in the propanol-1/cyclohexane (1:30) binary mixture. The Zn2+ detection limit was 1.4 × 10-7 М. The UV-Vis and fluorescence spectroscopic studies demonstrated that the dipyrromethene sensor was highly selective toward Zn2+ cations over other metal ions (Na+, Mg2+, Co2+, Ni2+, Fe3+, Cu2+, Mn2+, Cd2+ and Pb2+), excluding Hg2+.
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Affiliation(s)
- Natalia A Bumagina
- G. A. Krestov Institute of Solution Chemistry of Russian academy of Sciences 1 Akademicheskaya St., Ivanovo, Russia, 153045.
| | - Elena V Antina
- G. A. Krestov Institute of Solution Chemistry of Russian academy of Sciences 1 Akademicheskaya St., Ivanovo, Russia, 153045
| | - Anna Yu Nikonova
- Inorganic Chemistry Department, Ivanovo State University of Chemistry and Technology, 7 Sheremetevskij prosp, Ivanovo, Russia, 153000
| | - Mikhail B Berezin
- G. A. Krestov Institute of Solution Chemistry of Russian academy of Sciences 1 Akademicheskaya St., Ivanovo, Russia, 153045
| | - Alexander A Ksenofontov
- G. A. Krestov Institute of Solution Chemistry of Russian academy of Sciences 1 Akademicheskaya St., Ivanovo, Russia, 153045
| | - Anatoly I Vyugin
- G. A. Krestov Institute of Solution Chemistry of Russian academy of Sciences 1 Akademicheskaya St., Ivanovo, Russia, 153045
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Ling J, Daly B, Silverson VAD, de Silva AP. Taking baby steps in molecular logic-based computation. Chem Commun (Camb) 2015; 51:8403-9. [DOI: 10.1039/c4cc10000j] [Citation(s) in RCA: 73] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Constructs of fluorophores, receptors, spacers, 1O2 sensitizers, enzymes and oligonucleotides play their part in advancing the field of molecular logic-based computation.
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Affiliation(s)
- Jue Ling
- School of Chemistry and Chemical Engineering
- Queen's University
- Belfast BT9 5AG
- UK
| | - Brian Daly
- School of Chemistry and Chemical Engineering
- Queen's University
- Belfast BT9 5AG
- UK
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Mihelj T, Tomašić V, Biliškov N. 18-crown-6-sodium cholate complex: thermochemistry, structure, and stability. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:6274-6285. [PMID: 24805271 DOI: 10.1021/la501155s] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
18-Crown-6, one of the most relevant crown ethers, and sodium cholate, a steroidal surfactant classified as a natural bile salt, are components of a novel, synthesized coordination complex: 18-crown-6-sodium cholate (18C6·NaCh). Like crown ethers, bile salts act as building blocks in supramolecular chemistry to design new functionalized materials with a desired structure and properties. In order to obtain thermal behavior of this 1:1 coordination complex, thermogravimetry and differential thermal analysis were used, as well as microscopic observations and differential scanning calorimetry. Temperature dependent infrared (IR) spectroscopy gave a detailed view into phase transitions. The structures during thermal treatment were observed with powder X-ray diffraction, and molecular models of the phases were made. Hard, glassy, colorless compound 18C6·NaCh goes through crystalline-crystalline polymorphic phase transitions at higher temperatures. The room temperature phase is indexed to a triclinic lattice, while in the high temperature phases molecules take randomly one of the two different configurations in the unit cell, resulting in the 2-fold symmetry. The formation of cholesteric liquid crystalline phase occurs simultaneously with partial decomposition, followed by the isotropization with simultaneous and complete decomposition at much higher temperature, as obtained by IR. The results provide valuable information about the relationship between molecular structure, thermal properties, and stability of the complex, indicating the importance of an appropriate choice of cation, amphiphilic, and crown ether unit in order to synthesize compounds with desired behavior.
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Affiliation(s)
- Tea Mihelj
- Department of Physical Chemistry and ‡Division of Materials Chemistry, Ruđer Bošković Institute , POB 180, HR-10002 Zagreb, Croatia
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Madhuprasad, Swathi N, Manjunatha JR, Das UK, Shetty AN, Trivedi DR. Dual colorimetric receptor with logic gate operations: anion induced solvatochromism. NEW J CHEM 2014. [DOI: 10.1039/c3nj01229h] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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13
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Saha S, Chhatbar MU, Mahato P, Praveen L, Siddhanta AK, Das A. Rhodamine-alginate conjugate as self indicating gel beads for efficient detection and scavenging of Hg2+ and Cr3+ in aqueous media. Chem Commun (Camb) 2011; 48:1659-61. [PMID: 22187718 DOI: 10.1039/c1cc16554b] [Citation(s) in RCA: 96] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Effective extraction of Hg(2+) and Cr(3+) ions from aqueous media by novel rhodamine-alginate polymer-based highly fluorogenic, as well as colorimetric, chemosensor beads.
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Affiliation(s)
- Sukdeb Saha
- CSIR-Central Salt and Marine Chemicals Research Institute (Council of Scientific & Industrial Research), Bhavnagar-364002, Gujarat, India
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Parlayan S, Başoğlu A, Göbel Y, Ocak M, Alp H, Kantekin H, Ocak Ü. Complexation of metal ions with double-armed diazadithia lariat ether carrying anthracene moieties in acetonitrile–dioxane. J INCL PHENOM MACRO 2010. [DOI: 10.1007/s10847-009-9728-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Sakamoto H, Ishikawa J, Osuga H, Doi K, Wada H. Highly silver ion selective fluorescence ionophore: Fluorescent properties of polythiazaalkane derivatives bearing 8-(7-hydroxy-4-methyl)coumarinyl moiety in aqueous solution and in liquid–liquid extraction systems. Analyst 2010; 135:550-8. [DOI: 10.1039/b920625f] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Organic Dyes with Excited-State Transformations (Electron, Charge, and Proton Transfers). SPRINGER SERIES ON FLUORESCENCE 2010. [DOI: 10.1007/978-3-642-04702-2_7] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Liu HH, Chen Y. A Bifunctional Metal Probe with Independent Signal Outputs and Regulable Detection Limits. European J Org Chem 2009. [DOI: 10.1002/ejoc.200900582] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Maitra U, Nath S. Bile Acid Derived PET-Based Cation Sensors: Molecular Structure Dependence of their Sensitivity. Chem Asian J 2009; 4:989-997. [DOI: 10.1002/asia.200900026] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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A modular ligand design for cation sensors: phosphorus-supported pyrene-containing ligands as efficient Cu(II) and Mg(II) sensors. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.03.098] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Highly selective fluorescent recognition of phenyl amino alcohol based on ferrocenyl macrocyclic derivatives. ACTA ACUST UNITED AC 2009. [DOI: 10.1016/j.tetasy.2009.02.044] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Monte MJ, Marin JJG, Antelo A, Vazquez-Tato J. Bile acids: Chemistry, physiology, and pathophysiology. World J Gastroenterol 2009; 15:804-16. [PMID: 19230041 PMCID: PMC2653380 DOI: 10.3748/wjg.15.804] [Citation(s) in RCA: 360] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The family of bile acids includes a group of molecular species of acidic steroids with very peculiar physical-chemical and biological characteristics. They are synthesized by the liver from cholesterol through several complementary pathways that are controlled by mechanisms involving fine-tuning by the levels of certain bile acid species. Although their best-known role is their participation in the digestion and absorption of fat, they also play an important role in several other physiological processes. Thus, genetic abnormalities accounting for alterations in their synthesis, biotransformation and/or transport may result in severe alterations, even leading to lethal situations for which the sole therapeutic option may be liver transplantation. Moreover, the increased levels of bile acids reached during cholestatic liver diseases are known to induce oxidative stress and apoptosis, resulting in damage to the liver parenchyma and, eventually, extrahepatic tissues. When this occurs during pregnancy, the outcome of gestation may be challenged. In contrast, the physical-chemical and biological properties of these compounds have been used as the bases for the development of drugs and as pharmaceutical tools for the delivery of active agents.
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Brown GJ, de Silva AP, James MR, McKinney BO, Pears DA, Weir SM. Solid-bound, proton-driven, fluorescent ‘off–on–off’ switches based on PET (photoinduced electron transfer). Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.04.103] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Nonappa, Maitra U. Unlocking the potential of bile acids in synthesis, supramolecular/materials chemistry and nanoscience. Org Biomol Chem 2008; 6:657-69. [PMID: 18354842 DOI: 10.1039/b714475j] [Citation(s) in RCA: 104] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The Maitra group has explored a variety of chemistry with bile acids during the past 15 years and these experiments have covered a wide variety of chemistry-asymmetric synthesis, molecular recognition, ion receptors/sensors, dendrimers, low molecular mass organo and hydrogelators, gel-nanoparticle composites, etc. Some of what excites us in this field is highlighted in this perspective article.
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Affiliation(s)
- Nonappa
- Department of Organic Chemistry Indian Institute of Science, Bangalore, India
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Tsubaki K, Tanima D, Sasamori T, Tokitoh N, Kawabata T. Colorimetric recognition of the length of α,ω-diamines in water. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2007.01.099] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Blakemore JD, Chitta R, D’Souza F. Synthesis and study of crown ether-appended boron dipyrrin chemosensors for cation detection. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2007.01.067] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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