1
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Wen X, Wang F, Du S, Jiang Y, Zhang L, Liu M. Achiral Solvent Inversed Helical Pathway and Cosolvent Controlled Excited-State "Majority Rule" in Enantiomeric Dansulfonamide Assemblies. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2401954. [PMID: 38733233 DOI: 10.1002/smll.202401954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Revised: 04/26/2024] [Indexed: 05/13/2024]
Abstract
Achiral solvents are commonly utilized to induce the self-assembly of chiral molecules. This study demonstrates that achiral solvents can trigger helicity inversion in the assemblies of dansyl amphiphiles and control the excited-state "majority rule" in assemblies composed of pure enantiomers, through variation of the cosolvent ratio. Specifically, enantiomers of dansyl amphiphiles self-assemble into helical structures with opposite handedness in methanol (MeOH) and acetonitrile (MeCN), together with inversed circular dichroism and circularly polarized luminescence (CPL) signals. When a mixture of MeOH and MeCN is employed, the achiral cosolvents collectively affect the CPL of the assemblies in a way similar to that of "mixed enantiomers". The dominant cosolvent governs the CPL signal. As the cosolvent composition shifts from pure MeCN to MeOH, the CPL signals undergo a significant inversion and amplification, with two maxima observed at ≈20% MeOH and 20% MeCN. This study deepens the comprehension of how achiral solvents modulate helical nanostructures and their excited-state chiroptical properties.
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Affiliation(s)
- Xin Wen
- Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences (CAS), ZhongGuanCun North First Street 2, Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Fulin Wang
- Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences (CAS), ZhongGuanCun North First Street 2, Beijing, 100190, P. R. China
| | - Sifan Du
- Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences (CAS), ZhongGuanCun North First Street 2, Beijing, 100190, P. R. China
| | - Yuqian Jiang
- Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China
| | - Li Zhang
- Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences (CAS), ZhongGuanCun North First Street 2, Beijing, 100190, P. R. China
| | - Minghua Liu
- Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences (CAS), ZhongGuanCun North First Street 2, Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
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2
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Said AI, Staneva D, Grabchev I. New Water-Soluble Poly(propylene imine) Dendrimer Modified with 4-Sulfo-1,8-naphthalimide Units: Sensing Properties and Logic Gates Mimicking. SENSORS (BASEL, SWITZERLAND) 2023; 23:s23115268. [PMID: 37299994 DOI: 10.3390/s23115268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 05/28/2023] [Accepted: 05/30/2023] [Indexed: 06/12/2023]
Abstract
A new water-soluble poly(propylene imine) dendrimer (PPI) modified with 4-sulfo-1,8-naphthalimid units (SNID) and its related structure monomer analog (SNIM) has been prepared by a simple synthesis. The aqueous solution of the monomer exhibited aggregation-induced emission (AIE) at 395 nm, while the dendrimer emitted at 470 nm due to an excimer formation beside the AIE at 395 nm. Fluorescence emission of the aqueous solution of either SNIM or SNID was significantly affected by traces of different miscible organic solvents, and the limits of detection were found to be less than 0.05% (v/v). Moreover, SNID exhibited the function to execute molecular size-based logic gates where it mimics XNOR and INHIBIT logic gates using water and ethanol as inputs and the AIE/excimer emissions as outputs. Hence, the concomitant execution of both XNOR and INHIBIT enables SNID to mimic digital comparators.
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Affiliation(s)
- Awad I Said
- Faculty of Medicine, Sofia University "St. Kliment Ohridski", 1407 Sofia, Bulgaria
- Department of Chemistry, Faculty of Science, Assiut University, Assiut 71516, Egypt
| | - Desislava Staneva
- Department of Textile, Leader, and Fuels, University of Chemical Technology and Metallurgy, 1756 Sofia, Bulgaria
| | - Ivo Grabchev
- Faculty of Medicine, Sofia University "St. Kliment Ohridski", 1407 Sofia, Bulgaria
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3
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Andreoni L, Beneventi GM, Giovanardi G, Cera G, Credi A, Arduini A, Secchi A, Silvi S. A Multiresponsive Calix[6]arene Pseudorotaxane Empowered by Fluorophoric Dansyl Groups. Chemistry 2023; 29:e202203472. [PMID: 36929373 DOI: 10.1002/chem.202203472] [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: 11/08/2022] [Indexed: 03/18/2023]
Abstract
We report the synthesis and characterization, by means of NMR and UV-visible spectroscopy and electrochemical techniques, of a dansyl calix[6]arene derivative and of its pseudorotaxane complex with a bipyridinium-based axle. This novel macrocycle shows remarkable complexation ability, in analogy with parent compounds, while the dansyl moieties impart valuable features to the system. Indeed, these units: i) signal the state of the system by fluorescence; ii) can be reversibly protonated, enabling the modulation of the complexation abilities of the macrocycle; iii) participate in photoinduced electron transfer processes, which may be exploited to tune the stability of the supramolecular complex. Therefore, in this multiresponsive pseudorotaxane, the threading and de-threading motions of the molecular components can be modulated either by protonation of the calixarene host or by reduction of the bipyridinium guest, which can be accomplished both by electrochemical reduction and via photoinduced electron transfer. Overall, three orthogonal and reversible stimuli can be used to induce molecular movements of the pseudorotaxane components.
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Affiliation(s)
- Leonardo Andreoni
- Dipartimento di Chimica "G. Ciamician", Università di Bologna, Via Selmi 2, 40126, Bologna, Italy.,CLAN-Center for Light Activated Nanostructures, Istituto per la Sintesi Organica e la Fotoreattività, Consiglio Nazionale delle Ricerche, Via Gobetti 101, 40129, Bologna, Italy
| | | | - Gabriele Giovanardi
- Dipartimento di Scienze Chimiche della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, 43124, Parma, Italy
| | - Gianpiero Cera
- Dipartimento di Scienze Chimiche della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, 43124, Parma, Italy
| | - Alberto Credi
- CLAN-Center for Light Activated Nanostructures, Istituto per la Sintesi Organica e la Fotoreattività, Consiglio Nazionale delle Ricerche, Via Gobetti 101, 40129, Bologna, Italy.,Dipartimento di Chimica Industriale "Toso Montanari", Università di Bologna, Viale del Risorgimento 4, 40136, Bologna, Italy
| | - Arturo Arduini
- Dipartimento di Scienze Chimiche della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, 43124, Parma, Italy
| | - Andrea Secchi
- Dipartimento di Scienze Chimiche della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, 43124, Parma, Italy
| | - Serena Silvi
- Dipartimento di Chimica "G. Ciamician", Università di Bologna, Via Selmi 2, 40126, Bologna, Italy.,CLAN-Center for Light Activated Nanostructures, Istituto per la Sintesi Organica e la Fotoreattività, Consiglio Nazionale delle Ricerche, Via Gobetti 101, 40129, Bologna, Italy
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4
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Uygun M, Doganci E, Tasdelen MA, Gurek AG. One‐pot photoinduced synthesis of dansyl containing acrylamide hydrogels and their chemosensing properties. J Appl Polym Sci 2019. [DOI: 10.1002/app.47096] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- M. Uygun
- Department of ChemistryGebze Technical University 41400 Kocaeli Turkey
| | - E. Doganci
- Department of Chemistry and Chemical Processing TechKocaeli University 41140 Kocaeli Turkey
| | - M. A. Tasdelen
- Faculty of Engineering, Department of Polymer EngineeringYalova University 77100 Yalova Turkey
| | - A. G. Gurek
- Department of ChemistryGebze Technical University 41400 Kocaeli Turkey
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5
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Zhang Y, Cao J, Ding L. Fluorescent ensemble based on dansyl derivative/SDS assemblies as selective sensor for Asp and Glu in aqueous solution. J Photochem Photobiol A Chem 2017. [DOI: 10.1016/j.jphotochem.2016.10.018] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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6
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Carraro M, Bergamini G, Di Lauro M, Modugno G, Baroncini M, Ceroni P, Bonchio M. Photophysical Characterization and Recognition Behaviour of a Bis(dansylated) Polyoxometalate. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600636] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Mauro Carraro
- ITM-CNR and Department of Chemical Sciences; University of Padova; Via Marzolo 1 35131 Padova Italy
| | - Giacomo Bergamini
- Department of Chemistry “G. Ciamician“; University of Bologna and Interuniversity Center for the Chemical Conversion of Solar Energy (SolarChem); Via Selmi 2 40126 Bologna Italy
| | - Michele Di Lauro
- Department of Chemistry “G. Ciamician“; University of Bologna and Interuniversity Center for the Chemical Conversion of Solar Energy (SolarChem); Via Selmi 2 40126 Bologna Italy
| | - Gloria Modugno
- ITM-CNR and Department of Chemical Sciences; University of Padova; Via Marzolo 1 35131 Padova Italy
| | - Massimo Baroncini
- Department of Chemistry “G. Ciamician“; University of Bologna and Interuniversity Center for the Chemical Conversion of Solar Energy (SolarChem); Via Selmi 2 40126 Bologna Italy
| | - Paola Ceroni
- Department of Chemistry “G. Ciamician“; University of Bologna and Interuniversity Center for the Chemical Conversion of Solar Energy (SolarChem); Via Selmi 2 40126 Bologna Italy
| | - Marcella Bonchio
- ITM-CNR and Department of Chemical Sciences; University of Padova; Via Marzolo 1 35131 Padova Italy
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7
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Murgia S, Falchi AM, Meli V, Schillén K, Lippolis V, Monduzzi M, Rosa A, Schmidt J, Talmon Y, Bizzarri R, Caltagirone C. Cubosome formulations stabilized by a dansyl-conjugated block copolymer for possible nanomedicine applications. Colloids Surf B Biointerfaces 2015; 129:87-94. [PMID: 25829131 DOI: 10.1016/j.colsurfb.2015.03.025] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2014] [Revised: 01/23/2015] [Accepted: 03/09/2015] [Indexed: 12/31/2022]
Abstract
We present here an innovative, fluorescent, monoolein-based cubosome dispersion. Rather than embedded within the monoolein palisade, the fluorescent imaging agent, namely dansyl, was conjugated to the terminal ethylene oxide moieties of the block copolymer Pluronic F108. We discuss the physicochemical and photophysical properties of this fluorescent Pluronic and of a cubosome formulation stabilized by a mixture of dansyl-conjugated and non-conjugated Pluronic, also including an anticancer drug (quercetin). Furthermore, we performed biocompatibility tests against HeLa cells to assess internalization and cytotoxicity features of this nanoparticles aqueous dispersion. Cryo-TEM, SAXS, and DLS analysis, proved the bicontinuous cubic inner nanostructure and the morphology of this fluorescent cubosome dispersion, while photophysical measurements and biocompatibility results basically validate their potential use for theranostic nanomedicine applications.
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Affiliation(s)
- Sergio Murgia
- Dipartimento di Scienze Chimiche e Geologiche, Università di Cagliari, S.S. 554 Bivio Sestu, I-09042 Monserrato (CA), Italy.
| | - Angela Maria Falchi
- Dipartimento di Scienze Biomediche, Università di Cagliari, S.S. 554 Bivio Sestu, I-09042 Monserrato (CA) , Italy.
| | - Valeria Meli
- Dipartimento di Scienze Chimiche e Geologiche, Università di Cagliari, S.S. 554 Bivio Sestu, I-09042 Monserrato (CA), Italy.
| | - Karin Schillén
- Division of Physical Chemistry, Department of Chemistry, Center for Chemistry and Chemical Engineering, Lund University, P.O. Box 124, SE-221 00 Lund, Sweden.
| | - Vito Lippolis
- Dipartimento di Scienze Chimiche e Geologiche, Università di Cagliari, S.S. 554 Bivio Sestu, I-09042 Monserrato (CA), Italy.
| | - Maura Monduzzi
- Dipartimento di Scienze Chimiche e Geologiche, Università di Cagliari, S.S. 554 Bivio Sestu, I-09042 Monserrato (CA), Italy.
| | - Antonella Rosa
- Dipartimento di Scienze Biomediche, Università di Cagliari, S.S. 554 Bivio Sestu, I-09042 Monserrato (CA) , Italy.
| | - Judith Schmidt
- Department of Chemical Engineering, Technion-Israel Institute of Technology, Haifa 32000, Israel.
| | - Yeshayahu Talmon
- Department of Chemical Engineering, Technion-Israel Institute of Technology, Haifa 32000, Israel.
| | - Ranieri Bizzarri
- Istituto di Biofisica, CNR, U.O. Pisa, Via G Moruzzi 1, 56124 Pisa, Italy.
| | - Claudia Caltagirone
- Dipartimento di Scienze Chimiche e Geologiche, Università di Cagliari, S.S. 554 Bivio Sestu, I-09042 Monserrato (CA), Italy.
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8
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Medel S, Bosch P, de la Torre C, Ramírez P. Click chemistry to fluorescent hyperbranched polymers. 1 – Synthesis, characterization and spectroscopic properties. Eur Polym J 2014. [DOI: 10.1016/j.eurpolymj.2014.08.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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9
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Jain V, Bharatam PV. Pharmacoinformatic approaches to understand complexation of dendrimeric nanoparticles with drugs. NANOSCALE 2014; 6:2476-2501. [PMID: 24441940 DOI: 10.1039/c3nr05400d] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Nanoparticle based drug delivery systems are gaining popularity due to their wide spectrum advantages over traditional drug delivery systems; among them, dendrimeric nano-vectors are the most widely explored carriers for pharmaceutical and biomedical applications. The precise mechanism of encapsulation of drug molecules inside the dendritic matrix, delivery of drugs into specific cells, interactions of nano-formulation with biological targets and proteins, etc. present a substantial challenge to the scientific understanding of the subject. Computational methods complement experimental techniques in the design and optimization of drug delivery systems, thus minimizing the investment in drug design and development. Significant progress in computer simulations could facilitate an understanding of the precise mechanism of encapsulation of bioactive molecules and their delivery. This review summarizes the pharmacoinformatic studies spanning from quantum chemical calculations to coarse-grained simulations, aimed at providing better insight into dendrimer-drug interactions and the physicochemical parameters influencing the binding and release mechanism of drugs.
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Affiliation(s)
- Vaibhav Jain
- Department of Medicinal Chemistry, Department of Pharmacoinformatics, National Institute of Pharmaceutical Education and Research, Sector 67, S.A.S. Nagar, Punjab 160 062, India.
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10
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Pillai ZS, Ceroni P, Kubeil M, Heldt JM, Stephan H, Bergamini G. Dendrimers as Nd3+ ligands: effect of generation on the efficiency of the sensitized lanthanide emission. Chem Asian J 2013; 8:771-7. [PMID: 23345036 DOI: 10.1002/asia.201201065] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2012] [Revised: 12/18/2012] [Indexed: 11/08/2022]
Abstract
We have designed two novel dendrimers with cyclam cores with appended poly(amido amine) (PAMAM) dendrons, decorated at the periphery with four and eight dansyl chromophores, respectively. The photophysical properties of the dendrimers and their Nd(3+) complexes have been investigated. The energy-transfer efficiency to the lanthanide ions from these dendrimers has been studied as a function of the generation. It has been observed that an increase in the dendrimer generation as well as the number of amide units enhances the energy transfer to the lanthanide ion.
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Affiliation(s)
- Zeena S Pillai
- Department of Chemistry, School of Arts and Sciences, Amrita VishwaVidyapeetham, Amritapuri, Clappana P.O., Kollam-690525, Kerala, India
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11
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Ouadahi K, Sbargoud K, Allard E, Larpent C. FRET-mediated pH-responsive dual fluorescent nanoparticles prepared via click chemistry. NANOSCALE 2012; 4:727-732. [PMID: 22179667 DOI: 10.1039/c2nr11413e] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Herein, we report an easy preparation of azide-coated polystyrene-based nanoparticles (15 nm in diameter) and their surface functionalization via CuAAC with fluorophores in water. Resultant dual fluorescent nanoparticles coated with dansyl and pH-sensitive fluorescein moieties as the donor/acceptor FRET pair show a ratiometric response to pH upon excitation at a single wavelength.
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Affiliation(s)
- Karima Ouadahi
- Institut Lavoisier de Versailles UMR-CNRS 8180, Université de Versailles-Saint-Quentin-en-Yvelines, 45 Avenue des Etats-Unis, 78035 Versailles Cedex, France
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12
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Aumanen J, Korppi-Tommola J. Energy transfer to xanthene dyes in dansylated POPAM dendrimers. Chem Phys Lett 2011. [DOI: 10.1016/j.cplett.2011.10.061] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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13
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Hameau A, Fuchs S, Laurent R, Majoral JP, Caminade AM. Synthesis of dye/fluorescent functionalized dendrons based on cyclotriphosphazene. Beilstein J Org Chem 2011; 7:1577-83. [PMID: 22238535 PMCID: PMC3252861 DOI: 10.3762/bjoc.7.186] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2011] [Accepted: 11/02/2011] [Indexed: 01/22/2023] Open
Abstract
Functionalized phenols based on tyramine were synthesized in order to be selectively grafted on to hexachlorocyclotriphosphazene, affording a variety of functionalized dendrons of type AB(5). The B functions comprised fluorescent groups (dansyl) or dyes (dabsyl), whereas the A function was provided by either an aldehyde or an amine. The characterization of these dendrons is reported. An unexpected behaviour of a fluorescent and water-soluble dendron based on dansyl groups in mixtures of dioxane/water was observed.
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Affiliation(s)
- Aurélien Hameau
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205, route de Narbonne, BP 44099, F-31077 Toulouse, France
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14
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Carraro M, Modugno G, Fiorani G, Maccato C, Sartorel A, Bonchio M. Organic-Inorganic Molecular Nano-Sensors: A Bis-Dansylated Tweezer-Like Fluoroionophore Integrating a Polyoxometalate Core. European J Org Chem 2011. [DOI: 10.1002/ejoc.201101122] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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15
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Jalisatgi SS, Kulkarni VS, Tang B, Houston ZH, Lee MW, Hawthorne MF. A convenient route to diversely substituted icosahedral closomer nanoscaffolds. J Am Chem Soc 2011; 133:12382-5. [PMID: 21766843 PMCID: PMC3180896 DOI: 10.1021/ja204488p] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The design and synthesis of icosahedral polyhedral borane closomer motifs based upon carbonate and carbamate anchoring groups for biomedical applications are described. Dodecacarbamate closomers containing easily accessible groups of interest at their linker termini were synthesized via activation of the B-OH vertices as aryl carbonates and their subsequent reaction with primary amines. Novel dodecacarbonate closomers were successfully synthesized for the first time by reacting [closo-B(12)(OH)(12)](2-) with an excess of respective aryl chloroformates, utilizing relatively short reaction times, mild conditions and simple purification strategies, all of which had previously presented difficulties in closomer chemistry. This methodology for the 12-fold degenerate synthesis of carbonate and carbamate closomers will greatly facilitate further exploration of closomers as monodisperse nanomolecular delivery platforms.
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Affiliation(s)
- Satish S. Jalisatgi
- International Institute of Nano and Molecular Medicine, School of Medicine, University of Missouri
| | - Vikas S. Kulkarni
- International Institute of Nano and Molecular Medicine, School of Medicine, University of Missouri
| | - Betty Tang
- International Institute of Nano and Molecular Medicine, School of Medicine, University of Missouri
| | - Zachary H. Houston
- International Institute of Nano and Molecular Medicine, School of Medicine, University of Missouri
| | - Mark W. Lee
- International Institute of Nano and Molecular Medicine, School of Medicine, University of Missouri
| | - M. Frederick Hawthorne
- International Institute of Nano and Molecular Medicine, School of Medicine, University of Missouri
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16
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Cimrová V, Výprachtický D, Hörhold H. Poly[methyl(phenyl)silanediyl] modified with dansyl fluorophore: Synthesis and photophysics. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/pola.24654] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Věra Cimrová
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic
| | - Drahomír Výprachtický
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic
| | - Hans‐Heinrich Hörhold
- Institute of Organic Chemistry and Macromolecular Chemistry, University of Jena, Humboldtstrasse 10, 07743 Jena, Germany
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17
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Aumanen J, Teobaldi G, Zerbetto F, Korppi-Tommola J. The effect of temperature on the internal dynamics of dansylated POPAM dendrimers. RSC Adv 2011. [DOI: 10.1039/c1ra00625h] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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18
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Balzani V, Bergamini G, Ceroni P. Photochemistry and photophysics of metal complexes with dendritic ligands. ADVANCES IN INORGANIC CHEMISTRY 2011. [DOI: 10.1016/b978-0-12-385904-4.00008-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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19
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Ceroni P, Venturi M. Photoactive and Electroactive Dendrimers: Future Trends and Applications. Aust J Chem 2011. [DOI: 10.1071/ch10326] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The initial interest in dendrimer chemistry was the synthesis of such aesthetically pleasant macromolecules. Nowadays, the field is moving to applications in various multidisciplinary areas, such as medicine, biology, chemistry, physics, and engineering, i.e. at the interface of many disciplines. This short review describes some promising applications of photoactive and electroactive dendrimers as artificial enzymes, molecular batteries, sensors with signal amplification, photoswitchable hosts, systems for energy up-conversion, and light-harvesting antennas. The reported examples clearly show that these applications take advantage of the unique aspects of dendrimer structure: (i) three-dimensional array; (ii) generation-dependent size; (iii) presence of selected functional units in predetermined sites; and (iv) endo- and exo-receptor capabilities.
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Bergamini G, Sottilotta A, Maestri M, Ceroni P, Vögtle F. Cyclam-Cored Dendrimers Appended with Four Dendrons of Two Different Types: Intradendrimer Energy Transfer. Chem Asian J 2010; 5:1884-95. [DOI: 10.1002/asia.201000170] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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21
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Aggregation-Controlled Excimer Emission from Anthracene-Containing Polyamidoamine Dendrimers. Chemistry 2010; 16:3699-706. [DOI: 10.1002/chem.200902391] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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22
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Aumanen J, Kesti T, Sundström V, Teobaldi G, Zerbetto F, Werner N, Richardt G, van Heyst J, Vögtle F, Korppi-Tommola J. Internal Dynamics and Energy Transfer in Dansylated POPAM Dendrimers and Their Eosin Complexes. J Phys Chem B 2010; 114:1548-58. [DOI: 10.1021/jp902906q] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jukka Aumanen
- Department of Chemistry, Nanoscience Center, University of Jyväskylä, P.O. Box 35, 40014 Finland, Department of Chemical Physics, Chemical Center, Lund University, Box 124, SE-22100 Lund, Sweden, Kekulé-Institut für Organische Chemie und Biochemie der Rheinischen, Friedrich-Wilhelms-Universität Bonn, Gerhard-Domagk Strasse 1, 53121 Bonn, Germany, and Department of Chemistry “G. Ciamician”, University of Bologna, V.F. Selmi 2, 40126 Bologna, Italy
| | - Tero Kesti
- Department of Chemistry, Nanoscience Center, University of Jyväskylä, P.O. Box 35, 40014 Finland, Department of Chemical Physics, Chemical Center, Lund University, Box 124, SE-22100 Lund, Sweden, Kekulé-Institut für Organische Chemie und Biochemie der Rheinischen, Friedrich-Wilhelms-Universität Bonn, Gerhard-Domagk Strasse 1, 53121 Bonn, Germany, and Department of Chemistry “G. Ciamician”, University of Bologna, V.F. Selmi 2, 40126 Bologna, Italy
| | - Villy Sundström
- Department of Chemistry, Nanoscience Center, University of Jyväskylä, P.O. Box 35, 40014 Finland, Department of Chemical Physics, Chemical Center, Lund University, Box 124, SE-22100 Lund, Sweden, Kekulé-Institut für Organische Chemie und Biochemie der Rheinischen, Friedrich-Wilhelms-Universität Bonn, Gerhard-Domagk Strasse 1, 53121 Bonn, Germany, and Department of Chemistry “G. Ciamician”, University of Bologna, V.F. Selmi 2, 40126 Bologna, Italy
| | - Gilberto Teobaldi
- Department of Chemistry, Nanoscience Center, University of Jyväskylä, P.O. Box 35, 40014 Finland, Department of Chemical Physics, Chemical Center, Lund University, Box 124, SE-22100 Lund, Sweden, Kekulé-Institut für Organische Chemie und Biochemie der Rheinischen, Friedrich-Wilhelms-Universität Bonn, Gerhard-Domagk Strasse 1, 53121 Bonn, Germany, and Department of Chemistry “G. Ciamician”, University of Bologna, V.F. Selmi 2, 40126 Bologna, Italy
| | - Francesco Zerbetto
- Department of Chemistry, Nanoscience Center, University of Jyväskylä, P.O. Box 35, 40014 Finland, Department of Chemical Physics, Chemical Center, Lund University, Box 124, SE-22100 Lund, Sweden, Kekulé-Institut für Organische Chemie und Biochemie der Rheinischen, Friedrich-Wilhelms-Universität Bonn, Gerhard-Domagk Strasse 1, 53121 Bonn, Germany, and Department of Chemistry “G. Ciamician”, University of Bologna, V.F. Selmi 2, 40126 Bologna, Italy
| | - Nicole Werner
- Department of Chemistry, Nanoscience Center, University of Jyväskylä, P.O. Box 35, 40014 Finland, Department of Chemical Physics, Chemical Center, Lund University, Box 124, SE-22100 Lund, Sweden, Kekulé-Institut für Organische Chemie und Biochemie der Rheinischen, Friedrich-Wilhelms-Universität Bonn, Gerhard-Domagk Strasse 1, 53121 Bonn, Germany, and Department of Chemistry “G. Ciamician”, University of Bologna, V.F. Selmi 2, 40126 Bologna, Italy
| | - Gabriele Richardt
- Department of Chemistry, Nanoscience Center, University of Jyväskylä, P.O. Box 35, 40014 Finland, Department of Chemical Physics, Chemical Center, Lund University, Box 124, SE-22100 Lund, Sweden, Kekulé-Institut für Organische Chemie und Biochemie der Rheinischen, Friedrich-Wilhelms-Universität Bonn, Gerhard-Domagk Strasse 1, 53121 Bonn, Germany, and Department of Chemistry “G. Ciamician”, University of Bologna, V.F. Selmi 2, 40126 Bologna, Italy
| | - Jeroen van Heyst
- Department of Chemistry, Nanoscience Center, University of Jyväskylä, P.O. Box 35, 40014 Finland, Department of Chemical Physics, Chemical Center, Lund University, Box 124, SE-22100 Lund, Sweden, Kekulé-Institut für Organische Chemie und Biochemie der Rheinischen, Friedrich-Wilhelms-Universität Bonn, Gerhard-Domagk Strasse 1, 53121 Bonn, Germany, and Department of Chemistry “G. Ciamician”, University of Bologna, V.F. Selmi 2, 40126 Bologna, Italy
| | - Fritz Vögtle
- Department of Chemistry, Nanoscience Center, University of Jyväskylä, P.O. Box 35, 40014 Finland, Department of Chemical Physics, Chemical Center, Lund University, Box 124, SE-22100 Lund, Sweden, Kekulé-Institut für Organische Chemie und Biochemie der Rheinischen, Friedrich-Wilhelms-Universität Bonn, Gerhard-Domagk Strasse 1, 53121 Bonn, Germany, and Department of Chemistry “G. Ciamician”, University of Bologna, V.F. Selmi 2, 40126 Bologna, Italy
| | - Jouko Korppi-Tommola
- Department of Chemistry, Nanoscience Center, University of Jyväskylä, P.O. Box 35, 40014 Finland, Department of Chemical Physics, Chemical Center, Lund University, Box 124, SE-22100 Lund, Sweden, Kekulé-Institut für Organische Chemie und Biochemie der Rheinischen, Friedrich-Wilhelms-Universität Bonn, Gerhard-Domagk Strasse 1, 53121 Bonn, Germany, and Department of Chemistry “G. Ciamician”, University of Bologna, V.F. Selmi 2, 40126 Bologna, Italy
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Luminescent Dendrimers as Ligands and Sensors of Metal Ions. ADVANCED FLUORESCENCE REPORTERS IN CHEMISTRY AND BIOLOGY II 2010. [DOI: 10.1007/978-3-642-04701-5_8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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Hartmann-Thompson C, Keeley DL, Rousseau JR, Dvornic PR. Fluorescent dendritic polymers and nanostructured coatings for the detection of chemical warfare agents and other analytes. ACTA ACUST UNITED AC 2009. [DOI: 10.1002/pola.23562] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Branchi B, Ceroni P, Balzani V, Bergamini G, Klärner FG, Vögtle F. Adducts between Dansylated Poly(propylene amine) Dendrimers and Anthracene Clips Mediated by ZnIIIons: Highly Efficient Photoinduced Energy Transfer. Chemistry 2009; 15:7876-7882. [DOI: 10.1002/chem.200802300] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Trachsel A, de Saint Laumer JY, Haefliger O, Herrmann A. Parameters Influencing the Release of Tertiary Alcohols from the Surface of “Spherical” Dendrimers and “Linear” Stylomers by Neighbouring-Group-Assisted Hydrolysis of 2-Carbamoylbenzoates. Chemistry 2009; 15:2846-60. [DOI: 10.1002/chem.200801350] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Ortega P, Serramía MJ, Samaniego R, de la Mata FJ, Gomez R, Muñoz-Fernandez MA. Carbosilane dendrimers peripherally functionalized with dansyl fluorescence tags and their cellular internalization studies. Org Biomol Chem 2009. [DOI: 10.1039/b900942f] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Branchi B, Ceroni P, Balzani V, Cartagena MC, Klärner FG, Schrader T, Vögtle F. Fluorescent water-soluble molecular clips. Self-association and formation of adducts in aqueous and methanol solutions. NEW J CHEM 2009. [DOI: 10.1039/b812672k] [Citation(s) in RCA: 22] [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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Fuchs S, Pla-Quintana A, Mazères S, Caminade AM, Majoral JP. Cationic and fluorescent "Janus" dendrimers. Org Lett 2008; 10:4751-4. [PMID: 18816132 DOI: 10.1021/ol801698k] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Two synthetic routes to "Janus"-type dendrimers possessing ammonium groups on one side and fluorescent dansyl derivatives on the other side are described. These surface-block dendrimers are obtained by the coupling of two different dendrons, built from the hexafunctional cyclotriphosphazene core. Their characterization and their photophysical behavior are reported. The largest compound possesses 10 ammonium groups and 5 dansyl groups; it is potentially useful as a fluorescent label in materials science and biology.
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Affiliation(s)
- Sabine Fuchs
- Laboratoire de Chimie de Coordination du CNRS, 205 route de Narbonne, 31077 Toulouse Cedex 4, France
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31
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Synthesis and incorporation in Langmuir films of oligophenylenevinylene dendrimers bearing a polar head group and different dendritic poly(benzyl ether) branches. POLYMER 2008. [DOI: 10.1016/j.polymer.2008.06.049] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Newkome GR, Shreiner CD. Poly(amidoamine), polypropylenimine, and related dendrimers and dendrons possessing different 1→2 branching motifs: An overview of the divergent procedures. POLYMER 2008. [DOI: 10.1016/j.polymer.2007.10.021] [Citation(s) in RCA: 313] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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33
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Larsen J, Puntoriero F, Pascher T, McClenaghan N, Campagna S, Åkesson E, Sundström V. Extending the Light-Harvesting Properties of Transition-Metal Dendrimers. Chemphyschem 2007; 8:2643-51. [DOI: 10.1002/cphc.200700539] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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34
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Trinchi A, Muster TH. A Review of Surface Functionalized Amine Terminated Dendrimers for Application in Biological and Molecular Sensing. Supramol Chem 2007. [DOI: 10.1080/10610270601120363] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Adrian Trinchi
- a CSIRO Manufacturing and Materials Technology , Graham Road, Highett, Melbourne, Vic., 3190, Australia
| | - Tim H. Muster
- a CSIRO Manufacturing and Materials Technology , Graham Road, Highett, Melbourne, Vic., 3190, Australia
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35
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Vicinelli V, Bergamini G, Ceroni P, Balzani V, Vögtle F, Lukin O. Mechanisms for Fluorescence Depolarization in Dendrimers. J Phys Chem B 2007; 111:6620-7. [PMID: 17408257 DOI: 10.1021/jp070468p] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We have investigated the fluorescence properties of dendrimers (Gn is the dendrimer generation number) containing four different luminophores, namely terphenyl (T), dansyl (D), stilbenyl (S), and eosin (E). In the case of T, the dendrimers contain a single p-terphenyl fluorescent unit as a core with appended sulfonimide branches of different size and n-octyl chains. In the cases of D and S, multiple fluorescent units are appended in the periphery of poly(propylene amine) dendritic structures. In the case of E, the investigated luminophore is noncovalently linked to the dendritic scaffold, but is encapsulated in cavities of a low luminescent dendrimer. Depending on the photophysical properties of the fluorescent units and the structures of the dendrimers, different mechanisms of fluorescence depolarization have been observed: (i) global rotation for GnT dendrimers; (ii) global rotation and local motions of the dansyl units at the periphery of GnD dendrimers; (iii) energy migration among stylbenyl units in G2S; and (iv) restricted motion when E is encapsulated inside a dendrimer, coupled to energy migration if the dendrimer hosts more than one eosin molecule.
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Affiliation(s)
- Veronica Vicinelli
- Dipartimento di Chimica G. Ciamician, Università di Bologna, via Selmi 2, I-40126 Bologna, Italy
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Passaniti P, Maestri M, Ceroni P, Bergamini G, Vögtle F, Fakhrnabavi H, Lukin O. First generation TREN dendrimers functionalized with naphthyl and/or dansyl units. Ground and excited state electronic interactions and protonation effects. Photochem Photobiol Sci 2007; 6:471-9. [PMID: 17404643 DOI: 10.1039/b613944b] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report the photophysical properties (absorption and emission spectra, quantum yield, and lifetime) of five dendrimers of first generation based on a TREN (tris(2-aminoethyl)amine) skeleton functionalized at the periphery with naphthyl and/or 5-dimethylamino-1-naphthalenesulfonamide (hereafter called dansyl) chromophores. Each dendrimer comprises one tertiary amine unit in the core and three branches carrying a sulfonimido unit at the periphery, each one substituted by two identical or different moieties. In particular, TD6 and TN6 contain dansyl (D) or naphthyl (N) units, respectively, while TD3B3, TN3B3 and TN3D3 contain dansyl, naphthyl or benzyl (B) units at the periphery. The spectroscopic behaviour of these dendrimers has been investigated in acetonitrile solution and compared with that of reference compounds. For all dendrimers the absorption bands are red shifted compared to those of monomeric naphthyl and dansyl reference compounds. Moreover, the intense naphthyl and dansyl fluorescence is greatly quenched because of strong interactions between the two aromatic moieties linked by a sulfonimido unit. Protonation of the amine units of the dendrimers by addition of CF(3)SO(3)H (triflic) acid causes a decrease in intensity of the luminescence and a change in the shape of the emission bands. The shapes of the titration curves depend on the dendrimer, but in any case the effect of acid can be fully reversed by successive addition of base (tributylamine). The obtained results reveal that among the intradendrimer interactions the most important one is that taking place (via mesomeric interaction) between the various chromophores and a pair of sulfonimido groups.
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Affiliation(s)
- Paolo Passaniti
- Dipartimento di Chimica G. Ciamician, Università di Bologna, via Selmi 2, I-40126, Bologna, Italy
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37
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Balzani V, Bergamini G, Ceroni P, Vögtle F. Electronic spectroscopy of metal complexes with dendritic ligands. Coord Chem Rev 2007. [DOI: 10.1016/j.ccr.2006.04.007] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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38
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Parola AJ, Lima JC, Pina F, Pina J, Melo JSD, Soriano C, García-España E, Aucejo R, Alarcón J. Synthesis and photophysical properties of dansyl-based polyamine ligands and their Zn(II) complexes. Inorganica Chim Acta 2007. [DOI: 10.1016/j.ica.2006.11.006] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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39
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Tanaka M, Tanaka H, Pelton R. Amine-derivatized poly(diallyldimethylammonium chloride) fromN-vinylformamide copolymerization. J Appl Polym Sci 2007. [DOI: 10.1002/app.25777] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Kodiah Beyeh N, Aumanen J, Åhman A, Luostarinen M, Mansikkamäki H, Nissinen M, Korppi-Tommola J, Rissanen K. Dansylated resorcinarenes. NEW J CHEM 2007. [DOI: 10.1039/b615772f] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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41
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Branchi B, Ceroni P, Bergamini G, Balzani V, Maestri M, van Heyst J, Lee SK, Luppertz F, Vögtle F. A Cyclam Core Dendrimer Containing Dansyl and Oligoethylene Glycol Chains in the Branches: Protonation and Metal Coordination. Chemistry 2006; 12:8926-34. [PMID: 17106914 DOI: 10.1002/chem.200601129] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
We have synthesized a dendrimer (1) consisting of a 1,4,8,11-tetraazacyclotetradecane (cyclam) core, appended with four benzyl substituents that carry, in the 3- and 5-positions, a dansyl amide derivative (of type 2), in which the amide hydrogen is replaced by a benzyl unit that carries an oligoethylene glycol chain in the 3- and 5-positions. All together, the dendrimer contains 16 potentially luminescent moieties (eight dansyl- and eight dimethoxybenzene-type units) and three distinct types of multivalent sites that, in principle, can be protonated or coordinated to metal ions (the cyclam nitrogen atoms, the amine moieties of the eight dansyl units, and the 16 oligoethylene glycol chains). We have studied the absorption and luminescence properties of 1, 2, and 3 in acetonitrile and the changes taking place upon titration with acid and a variety of divalent (Co2+, Ni2+, Cu2+, Zn2+), and trivalent (Nd3+, Eu3+, Gd3+) metal ions as triflate and/or nitrate salts. The results obtained show that: 1) double protonation of the cyclam ring takes place before protonation of the dansyl units; 2) the oligoethylene glycol chains do not interfere with protonation of the cyclam core and the dansyl units in the ground state, but affect the luminescence of the protonated dansyl units; 3) the first equivalent of metal ion is coordinated by the cyclam core; 4) the interaction of the resulting cyclam complex with the appended dansyl units depends on the nature of the metal ion; 5) coordination of metal ions by the dansyl units follows at high metal-ion concentrations; 6) the effect of the metal ion depends on the nature of the counterion. This example demonstrates that dendrimers may exhibit complete functionality resulting from the integration of the specific properties of their component units.
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Affiliation(s)
- Barbara Branchi
- Dipartimento di Chimica G. Ciamician, Università di Bologna, via Selmi 2, 40126 Bologna, Italy
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Aumanen J, Lehtovuori V, Werner N, Richardt G, van Heyst J, Vögtle F, Korppi-Tommola J. Ultrafast energy transfer in dansylated POPAM–eosin complexes. Chem Phys Lett 2006. [DOI: 10.1016/j.cplett.2006.11.034] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Passaniti P, Ceroni P, Balzani V, Lukin O, Yoneva A, Vögtle F. Amide-Based Molecular Knots as Platforms for Fluorescent Switches. Chemistry 2006; 12:5685-90. [PMID: 16721887 DOI: 10.1002/chem.200600350] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
A series of amide-based molecular knots equipped selectively with fluorescent dansyl and/or pyrenesulfonyl moieties were synthesized from the readily available tris(allyloxy)knotane. UV/Vis absorption spectra, emission spectra, and the emission lifetimes of the fluorescent knotanes were investigated in chloroform at 298 K. The absorption spectra of the knotanes correspond to those of mixtures of their UV-active constituents. The fluorescence quantum yields and lifetimes of the dansyl and pyrenesulfonyl moieties are partly quenched by the knotane platform. In the KN(Da)(2)(Py) species, the fluorescent excited state of the dansyl units (lambda(max)=510 nm) lies at lower energy than the fluorescent excited state of the pyrenesulfonyl unit (lambda(max)=385 nm), the emission of which is accordingly quenched with sensitization of the dansyl fluorescence. In the KN(Ao)(2)(Da), KN(Ao)(Da)(2), and KN(Da)(3) species, the addition of acids causes the protonation of their dansyl units with a consequent decrease in the intensity of the dansyl band at 510 nm and appearance of the emission band of the protonated dansyl unit (lambda(max)=340 nm). Each dansyl unit of KN(Ao)(Da)(2) and KN(Da)(3) undergoes the independent protonation. In these incompletely protonated knotanes the fluorescence of the protonated dansyl units is partly quenched by nonprotonated ones. These processes can be quantitatively reversed upon addition of a base. In KN(Da)(2)(Py), an increase of the fluorescence of its pyrenesulfonyl group is observed when the dansyl groups are protonated. The results obtained show that the readily available and easily functionalizable amide-knotanes can be used as an interesting scaffold to obtain fluorescent switches.
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Affiliation(s)
- Paolo Passaniti
- Dipartimento di Chimica G. Ciamician, Università di Bologna, via Selmi 2, 40126 Bologna, Italy
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Do JY, Ju JJ. Polyester Dendrimers Carrying NLO Chromophores: Synthesis and Optical Characterization. MACROMOL CHEM PHYS 2005. [DOI: 10.1002/macp.200400547] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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45
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Montalti M, Prodi L, Zaccheroni N. Fluorescence quenching amplification in silica nanosensors for metal ions. ACTA ACUST UNITED AC 2005. [DOI: 10.1039/b502212f] [Citation(s) in RCA: 104] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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46
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Ceroni P, Vicinelli V, Maestri M, Balzani V, Lee SK, van Heyst J, Gorka M, Vögtle F. Luminescent dendrimers as ligands for metal ions. J Organomet Chem 2004. [DOI: 10.1016/j.jorganchem.2004.06.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Montalti M, Prodi L, Zaccheroni N, Zattoni A, Reschiglian P, Falini G. Energy transfer in fluorescent silica nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2004; 20:2989-2991. [PMID: 15835186 DOI: 10.1021/la0361868] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Affiliation(s)
- Marco Montalti
- Dipartimento di Chimica G.Ciamician, Università di Bologna, Via Selmi 2, 40126 Bologna, Italy.
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Métivier R, Leray I, Valeur B. Photophysics of calixarenes bearing two or four dansyl fluorophores: charge, proton and energy transfers. Photochem Photobiol Sci 2004; 3:374-80. [PMID: 15052366 DOI: 10.1039/b314674j] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The photophysical properties of calixarenes bearing two and four dansyl derivatives (Calix-DANS2 and Calix-DANS4) were investigated in a CH(3)CN/H(2)O mixture (60 : 40 v/v). The carboxydansyl (DANS1) was used as a reference compound. The pH titration of DANS1 permits determination of two pK(A) values (2.4 and 6.3). The charge-transfer character of this type of fluorophore is discussed. The protonated dansyl group LH(2)(+) undergoes photoinduced proton transfer. The photophysical characterization (absorption spectra, emission spectra, quantum yield and fluorescence decays) of Calix-DANS2 and Calix-DANS4 showed that nonradiative energy transfer occurs from a dansyl fluorophore in the basic form to another one in the neutral form. The transfer efficiencies are 0.1 and 0.5 for Calix-DANS2 and Calix-DANS4, respectively. Fluorescence data analysis allowed us to determine the fractions of dansyl fluorophores in the basic and neutral forms.
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Affiliation(s)
- Rémi Métivier
- CNRS UMR 8531 Laboratoire de Photophysique et Photochimie Supramoléculaires et Macromoléculaires, Département de Chimie, ENS-Cachan, 61 Avenue du Président Wilson, F-94235 Cachan Cedex, France
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50
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