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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Sakr A, Georgiev N, Bojinov V. Design, Photochemistry, Logic Gates Behavior and Antibacterial Evaluation of ICT Systems based on 1,8-naphthalimides. J Fluoresc 2023; 33:43-51. [PMID: 36208369 DOI: 10.1007/s10895-022-03035-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2022] [Accepted: 09/22/2022] [Indexed: 02/03/2023]
Abstract
Ace naphthene as a primary material was nitrated and further reacted by various processes such as oxidation, imidation and amination in order to obtain dyad 5. The dyad 5 fluoresces in solvents of different polarity and the emission is shifted bathochromically with increasing the solvent polarity due to ICT enhancement, The fluorescent enhancement is greatest in case of chloroform (ФF = 0.48) on excitation at 420 nm,The influences of the pH on dyad 5 were also investigated, The results can be considered as representing off-on-off states. Dyad 5 executes two input XNOR logic gates, towards H+ and HO- ions, "off-on-off" switching behavior between H+ and HO- ions was observed, The synthesized compounds were tested for antimicrobial activity of Gram-positive and Gram-negative bacteria, The compounds tested have a good antibacterial activity as compared with standard compound (Gentamycin).
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Affiliation(s)
- Alaa Sakr
- Department of Organic Synthesis, University of Chemical Technology and Metallurgy, 8 Kliment Ohridsky Str., 1756, Sofia, Bulgaria. .,Department of Chemistry, Faculty of Science, Zagazig University, Zagazig City, Egypt.
| | - Nikolai Georgiev
- Department of Organic Synthesis, University of Chemical Technology and Metallurgy, 8 Kliment Ohridsky Str., 1756, Sofia, Bulgaria
| | - Vladimir Bojinov
- Department of Organic Synthesis, University of Chemical Technology and Metallurgy, 8 Kliment Ohridsky Str., 1756, Sofia, Bulgaria
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3
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Yao CY, Uchiyama S, de Silva AP. A Personal Journey across Fluorescent Sensing and Logic Associated with Polymers of Various Kinds. Polymers (Basel) 2019; 11:E1351. [PMID: 31416199 PMCID: PMC6723954 DOI: 10.3390/polym11081351] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Revised: 08/10/2019] [Accepted: 08/12/2019] [Indexed: 01/05/2023] Open
Abstract
Our experiences concerning fluorescent molecular sensing and logic devices and their intersections with polymer science are the foci of this brief review. Proton-, metal ion- and polarity-responsive cases of these devices are placed in polymeric micro- or nano-environments, some of which involve phase separation. This leads to mapping of chemical species on the nanoscale. These devices also take advantage of thermal properties of some polymers in water in order to reincarnate themselves as thermometers. When the phase separation leads to particles, the latter can be labelled with identification tags based on molecular logic. Such particles also give rise to reusable sensors, although molecular-scale resolution is sacrificed in the process. Polymeric nano-environments also help to organize rather complex molecular logic systems from their simple components. Overall, our little experiences suggest that researchers in sensing and logic would benefit if they assimilate polymer concepts.
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Affiliation(s)
- Chao-Yi Yao
- School of Chemistry and Chemical Engineering, Queen's University, BT9 5AG Belfast, Northern Ireland.
| | - 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, BT9 5AG Belfast, Northern Ireland.
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4
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Kathayat RS, Yang L, Sattasathuchana T, Zoppi L, Baldridge KK, Linden A, Finney NS. On the Origins of Nonradiative Excited State Relaxation in Aryl Sulfoxides Relevant to Fluorescent Chemosensing. J Am Chem Soc 2016; 138:15889-15895. [PMID: 27809511 DOI: 10.1021/jacs.6b00572] [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 provide herein a mechanistic analysis of aryl sulfoxide excited state processes, inspired by our recent report of aryl sulfoxide based fluorescent chemosensors. The use of aryl sulfoxides as reporting elements in chemosensor development is a significant deviation from previous approaches, and thus warrants closer examination. We demonstrate that metal ion binding suppresses nonradiative excited state decay by blocking formation of a previously unrecognized charge transfer excited state, leading to fluorescence enhancement. This charge transfer state derives from the initially formed locally excited state followed by intramolecular charge transfer to form a sulfoxide radical cation/aryl radical anion pair. With the aid of computational studies, we map out ground and excited state potential energy surface details for aryl sulfoxides, and conclude that fluorescence enhancement is almost entirely the result of excited state effects. This work expands previous proposals that excited state pyramidal inversion is the major nonradiative decay pathway for aryl sulfoxides. We show that pyramidal inversion is indeed relevant, but that an additional and dominant nonradiative pathway must also exist. These conclusions have implications for the design of next generation sulfoxide based fluorescent chemosensors.
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Affiliation(s)
- Rahul S Kathayat
- Department of Chemistry, University of Zurich , Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Lijun Yang
- School of Pharmaceutical Science and Technology, Tianjin University , 92 Weijin Road, Nankai District, Tianjin, 300072, China
| | - Tosaporn Sattasathuchana
- Department of Chemistry, University of Zurich , Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Laura Zoppi
- Department of Chemistry, University of Zurich , Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Kim K Baldridge
- Department of Chemistry, University of Zurich , Winterthurerstrasse 190, CH-8057 Zurich, Switzerland.,School of Pharmaceutical Science and Technology, Tianjin University , 92 Weijin Road, Nankai District, Tianjin, 300072, China
| | - Anthony Linden
- Department of Chemistry, University of Zurich , Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Nathaniel S Finney
- Department of Chemistry, University of Zurich , Winterthurerstrasse 190, CH-8057 Zurich, Switzerland.,School of Pharmaceutical Science and Technology, Tianjin University , 92 Weijin Road, Nankai District, Tianjin, 300072, China
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5
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Kaur P, Singh R, Kaur V, Talwar D. A chromogenic “off–on” azomethine sensor possessing ONNNO receptor site for iron species and its application in the fabrication of INHIBIT type molecular logic gate. Polyhedron 2016. [DOI: 10.1016/j.poly.2016.03.021] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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6
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Novel PAMAM Dendron as a Bichromophoric Probe Based on Rhodamine 6G and 1,8-Naphthalimide. J Fluoresc 2016; 26:1091-100. [DOI: 10.1007/s10895-016-1799-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Accepted: 03/27/2016] [Indexed: 10/24/2022]
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7
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de Silva AP. Bright molecules for sensing, computing and imaging: a tale of two once-troubled cities. Beilstein J Org Chem 2015; 11:2774-84. [PMID: 26877799 PMCID: PMC4734363 DOI: 10.3762/bjoc.11.298] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2015] [Accepted: 12/10/2015] [Indexed: 01/08/2023] Open
Abstract
The circumstances in Colombo, Sri Lanka, and in Belfast, Northern Ireland, which led to a) the generalization of luminescent PET (photoinduced electron transfer) sensing/switching as a design tool, b) the construction of a market-leading blood electrolyte analyzer and c) the invention of molecular logic-based computation as an experimental field, are delineated. Efforts to extend the philosophy of these approaches into issues of small object identification, nanometric mapping, animal visual perception and visual art are also outlined.
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Affiliation(s)
- A Prasanna de Silva
- School of Chemistry and Chemical Engineering, Queen's University, Belfast BT9 5AG, Northern Ireland
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8
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Said AI, Georgiev NI, Bojinov VB. Sensor activity and logic behavior of dihydroxyphenyl hydrazone derivative as a chemosensor for Cu 2+ determination in alkaline aqueous solutions. J Photochem Photobiol A Chem 2015. [DOI: 10.1016/j.jphotochem.2015.05.035] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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9
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Ling J, Naren G, Kelly J, Fox DB, Prasanna de Silva A. Small molecular logic systems can draw the outlines of objects via edge visualization. Chem Sci 2015; 6:4472-4478. [PMID: 29142699 PMCID: PMC5665087 DOI: 10.1039/c5sc01537e] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Accepted: 06/04/2015] [Indexed: 01/30/2023] Open
Abstract
The recently-discovered ability of small logical molecules to recognize edges is exploited to achieve outline drawing from binary templates. Outlines of arbitrary curvature, several colours and thicknesses down to 1 mm are drawn in around 30 min or less by employing a common laboratory two-colour ultraviolet lamp. The outlines and the light dose-driven XOR logic with fluorescence output or 'off-on-off' action which is observed in the irradiated regions are modelled by combining foundational principles of photochemistry, acid-base neutralization and diffusion.
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Affiliation(s)
- Jue Ling
- School of Chemistry and Chemical Engineering , Queen's University , Belfast BT9 5AG , Northern Ireland , UK . ; ; Tel: +44(0) 28 9097 4422
| | - Gaowa Naren
- School of Chemistry and Chemical Engineering , Queen's University , Belfast BT9 5AG , Northern Ireland , UK . ; ; Tel: +44(0) 28 9097 4422
| | - Jessica Kelly
- School of Chemistry and Chemical Engineering , Queen's University , Belfast BT9 5AG , Northern Ireland , UK . ; ; Tel: +44(0) 28 9097 4422
| | - David B Fox
- School of Chemistry and Chemical Engineering , Queen's University , Belfast BT9 5AG , Northern Ireland , UK . ; ; Tel: +44(0) 28 9097 4422
| | - A Prasanna de Silva
- School of Chemistry and Chemical Engineering , Queen's University , Belfast BT9 5AG , Northern Ireland , UK . ; ; Tel: +44(0) 28 9097 4422
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10
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Alamry KA, Georgiev NI, El-Daly SA, Taib LA, Bojinov VB. A highly selective ratiometric fluorescent pH probe based on a PAMAM wavelength-shifting bichromophoric system. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 135:792-800. [PMID: 25150429 DOI: 10.1016/j.saa.2014.07.076] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2014] [Revised: 07/21/2014] [Accepted: 07/28/2014] [Indexed: 06/03/2023]
Abstract
A novel PAMAM wavelength-shifting bichromophoric system has been successfully developed. Novel compound was configured as a light harvesting antenna where the system surface is labeled with yellow-green emitting 4-(N,N-dimethylamino)ethylamino-1,8-naphthalimide "donor" units capable of absorbing light and efficiently transferring the energy to a focal Rhodamine 6G "acceptor". The periphery of the system was designed on the "fluorophore-spacer-receptor" format, capable of acting as a molecular fluorescence photoinduced electron transfer based probe. Due to the both effects, photoinduced electron transfer in the periphery of the system and pH dependent rhodamine core absorption, novel antenna is able to act as a selective ratiometric pH fluorescence probe in aqueous medium. Thus, the distinguishing features of the fluorescence resonance energy transfer systems were successfully combined with the properties of classical ring-opening charge transfer systems, which may be beneficially for monitoring pH variations in complex samples.
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Affiliation(s)
- Khalid A Alamry
- Chemistry Department, Faculty of Sciences, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia
| | - Nikolai I Georgiev
- Department of Organic Synthesis, University of Chemical Technology and Metallurgy, 8 Kliment Ohridsky Str., 1756 Sofia, Bulgaria
| | - Samy Abdullah El-Daly
- Chemistry Department, Faculty of Sciences, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia; Center of Excellence for Advanced Materials Research (CEAMR), King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia
| | - Layla A Taib
- Chemistry Department, Faculty of Sciences, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia
| | - Vladimir B Bojinov
- Chemistry Department, Faculty of Sciences, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia; Department of Organic Synthesis, University of Chemical Technology and Metallurgy, 8 Kliment Ohridsky Str., 1756 Sofia, Bulgaria.
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11
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Georgiev NI, Lyulev MP, Alamry KA, El-Daly SA, Taib LA, Bojinov VB. Synthesis, sensor activity, and logic behavior of a highly water-soluble 9,10-dihydro-7H-imidazo[1,2-b]benz[d,e]isoqionolin-7-one dicarboxylic acid. J Photochem Photobiol A Chem 2015. [DOI: 10.1016/j.jphotochem.2014.09.013] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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12
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Makki MS, Staneva D, Sobahi TR, Bosch P, Abdel-Rahman RM, Grabchev I. Design and synthesis of a new fluorescent tripod for chemosensor applications. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.10.041] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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13
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Dimov SM, Georgiev NI, Asiri AM, Bojinov VB. Synthesis and sensor activity of a PET-based 1,8-naphthalimide Probe for Zn(2+) and pH determination. J Fluoresc 2014; 24:1621-8. [PMID: 25199470 DOI: 10.1007/s10895-014-1448-2] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2014] [Accepted: 08/20/2014] [Indexed: 01/13/2023]
Abstract
A novel blue-emitting 1,8-naphthalimide fluorophore designed as a molecular PET-based probe for determination of pH and detection of transition metal ions in the environment was successfully synthesized. Novel compound was configured on the "fluorophore-spacer-receptor" format. Due to the tertiary amine receptor the novel system showed "off-on" switching properties under the transition from alkaline to acid media (FE = 3.2) and in the presence of Zn(2+) ions (FE = 2.5). The results obtained illustrate the high potential of the synthesized blue-emitting 1,8-naphthalimide fluorophore as an efficient pH chemosensing material and a selective probe for Zn(2+) ions.
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Affiliation(s)
- Stefan M Dimov
- Department of Organic Synthesis, University of Chemical Technology and Metallurgy, 8 Kliment Ohridsky Bulv, 1756, Sofia, Bulgaria
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14
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Malkondu S. A highly selective and sensitive perylenebisimide-based fluorescent PET sensor for Al3+ determination in MeCN. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.06.094] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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15
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Georgiev NI, Asiri AM, Alamry KA, Obaid AY, Bojinov VB. Selective ratiometric pH-sensing PAMAM light-harvesting dendrimer based on Rhodamine 6G and 1,8-naphthalimide. J Photochem Photobiol A Chem 2014. [DOI: 10.1016/j.jphotochem.2013.12.005] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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16
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Orbach R, Remacle F, Levine RD, Willner I. DNAzyme-based 2:1 and 4:1 multiplexers and 1:2 demultiplexer. Chem Sci 2014. [DOI: 10.1039/c3sc52752b] [Citation(s) in RCA: 74] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
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17
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Bünzli JCG. Grand challenges in inorganic chemistry: toward better life quality and a more sustainable world. Front Chem 2013; 1:2. [PMID: 24790932 PMCID: PMC3982575 DOI: 10.3389/fchem.2013.00002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2013] [Accepted: 02/21/2013] [Indexed: 11/16/2022] Open
Affiliation(s)
- Jean-Claude G Bünzli
- Laboratory of Lanthanides Supramolecular Chemistry, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne Lausanne, Switzerland
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18
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Abstract
Ultrafast photochemical processes can occur in parallel with the relaxation of the optically populated excited state toward equilibrium. The latter involves both intra- and intermolecular modes, namely vibrational and solvent coordinates, and takes place on timescales ranging from a few tens of femtoseconds to up to hundreds of picoseconds, depending on the system. As a consequence, the reaction dynamics can substantially differ from those usually measured with slower photoinduced processes occurring from equilibrated excited states. For example, the decay of the excited-state population may become strongly nonexponential and depend on the excitation wavelength, contrary to the Kasha and Vavilov rules. In this article, we first give a brief account of our current understanding of vibrational and solvent relaxation processes. We then present an overview of important classes of ultrafast photochemical reactions, namely electron and proton transfer as well as isomerization, and illustrate with several examples how nonequilibrium effects can affect their dynamics.
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Affiliation(s)
- Arnulf Rosspeintner
- Department of Physical Chemistry, University of Geneva, CH-1211 Geneve 8, Switzerland
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19
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Chuang CJ, Lai CC, Liu YH, Peng SM, Chiu SH. A Two-Stage Molecular Retractable Cable Featuring Push-Button and Rotary Two-Way Switching Modes. Chemistry 2012; 18:16698-707. [DOI: 10.1002/chem.201202820] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2012] [Revised: 09/25/2012] [Indexed: 11/06/2022]
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20
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Georgiev NI, Lyulev MP, Bojinov VB. Sensor activity and logic behaviour of PET based dihydroimidazonaphthalimide diester. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2012; 97:512-520. [PMID: 22842131 DOI: 10.1016/j.saa.2012.06.053] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2011] [Revised: 05/01/2012] [Accepted: 06/05/2012] [Indexed: 06/01/2023]
Abstract
An ester terminated dihydroimidazonaphthalimide as multi-functional logic device is presented. Due to the optical changes as a function of pH this simple molecule is able to act as a molecular pH metre, a digital comparator and a half-adder. It was demonstrated that the dihydroimidazonaphthalimide comparator could be used as a fundamental element of an optical device for control of pH windows. Also, the ability of the device to detect metal ions in DMF and in water/DMF (3:1, v/v) at different pHs has been evaluated by monitoring the changes of its fluorescence intensity. Among the tested metal ions (Cd(2+), Co(2+), Cu(2+), Fe(3+), Ni(2+), Pb(2+), Zn(2+), Bi(3+), Hg(2+) and Ag(+)) only Fe(3+) and Bi(3+) were efficiently detected. In water/DMF (3:1, v/v) XOR and XNOR logic gates are presented using pH and Fe(3+) as chemical inputs based on encoding binary digits of logical conventions.
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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
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21
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Zheng S, Lynch PLM, Rice TE, Moody TS, Gunaratne HQN, de Silva AP. Structural effects on the pH-dependent fluorescence of naphthalenic derivatives and consequences for sensing/switching. Photochem Photobiol Sci 2012; 11:1675-81. [DOI: 10.1039/c2pp25069a] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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22
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Gerasimova YV, Kolpashchikov DM. Connectable DNA Logic Gates: OR and XOR Logics. Chem Asian J 2011; 7:534-40. [DOI: 10.1002/asia.201100664] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2011] [Indexed: 01/11/2023]
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