1
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Schlichter L, Bosse F, Tyler BJ, Arlinghaus HF, Ravoo BJ. Patterning of Hydrophilic and Hydrophobic Gold and Magnetite Nanoparticles by Dip Pen Nanolithography. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2208069. [PMID: 36828795 DOI: 10.1002/smll.202208069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 02/01/2023] [Indexed: 05/04/2023]
Abstract
Nanoparticles offer unique physical and chemical properties. Dip pen nanolithography of nanoparticles enables versatile patterning and nanofabrication with potential application in electronics and sensing, but is not well studied yet. Herein, the patterned deposition of various nanoparticles onto unmodified silicon substrates is presented. It is shown that aqueous solutions of hydrophilic citrate and cyclodextrin functionalized gold nanoparticles as well as poly(acrylic) acid decorated magnetite nanoparticles are feasible for writing nanostructures. Both smaller and larger nanoparticles can be patterned. Hydrophobic oleylamine or n-dodecylamine capped gold nanoparticles and oleic acid decorated magnetite nanoparticles are deposited from toluene. Tip loading is carried out by dip-coating, and writing succeeds fast within 0.1 s. Also, coating with longer tip dwell times, at different relative humidity and varying frequency are studied for deposition of nanoparticle clusters. The resulting feature size is between 300 and 1780 nm as determined by scanning electron microscopy. Atomic force microscopy confirms that the heights of the deposited structures correspond to a single or double layer of nanoparticles. Higher writing speeds lead to smaller line thicknesses, offering possibilities to more complex structures. Dip pen nanolithography can hence be used to pattern nanoparticles on silicon substrates independent of the surface chemistry.
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Affiliation(s)
- Lisa Schlichter
- Center for Soft Nanoscience and Organic Chemistry Institute, Westfälische Wilhelms- Universität Münster, Busso-Peus-Straße 10, 48149, Münster, Germany
| | - Florian Bosse
- Center for Soft Nanoscience and Organic Chemistry Institute, Westfälische Wilhelms- Universität Münster, Busso-Peus-Straße 10, 48149, Münster, Germany
| | - Bonnie J Tyler
- Center for Soft Nanoscience and Physics Institute, Westfälische Wilhelms-Universität Münster, Busso-Peus-Str. 10, 48149, Münster, Germany
| | - Heinrich F Arlinghaus
- Center for Soft Nanoscience and Physics Institute, Westfälische Wilhelms-Universität Münster, Busso-Peus-Str. 10, 48149, Münster, Germany
| | - Bart Jan Ravoo
- Center for Soft Nanoscience and Organic Chemistry Institute, Westfälische Wilhelms- Universität Münster, Busso-Peus-Straße 10, 48149, Münster, Germany
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2
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Potential Controlled Redox Cycling of 4-aminothiophenol by Coupling Plasmon Mediated Chemical Reaction with Electrochemical Reaction. J Catal 2023. [DOI: 10.1016/j.jcat.2023.01.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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3
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Yuan Z, Ding J, Zhang Y, Huang B, Song Z, Meng X, Ma X, Gong X, Huang Z, Ma S, Xiang S, Xu W. Components, mechanisms and applications of stimuli-responsive polymer gels. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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4
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Gemen J, Białek MJ, Kazes M, Shimon LJ, Feller M, Semenov SN, Diskin-Posner Y, Oron D, Klajn R. Ternary host-guest complexes with rapid exchange kinetics and photoswitchable fluorescence. Chem 2022; 8:2362-2379. [PMID: 36133801 PMCID: PMC9473544 DOI: 10.1016/j.chempr.2022.05.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 02/18/2022] [Accepted: 05/11/2022] [Indexed: 11/16/2022]
Abstract
Confinement within molecular cages can dramatically modify the physicochemical properties of the encapsulated guest molecules, but such host-guest complexes have mainly been studied in a static context. Combining confinement effects with fast guest exchange kinetics could pave the way toward stimuli-responsive supramolecular systems—and ultimately materials—whose desired properties could be tailored “on demand” rapidly and reversibly. Here, we demonstrate rapid guest exchange between inclusion complexes of an open-window coordination cage that can simultaneously accommodate two guest molecules. Working with two types of guests, anthracene derivatives and BODIPY dyes, we show that the former can substantially modify the optical properties of the latter upon noncovalent heterodimer formation. We also studied the light-induced covalent dimerization of encapsulated anthracenes and found large effects of confinement on reaction rates. By coupling the photodimerization with the rapid guest exchange, we developed a new way to modulate fluorescence using external irradiation. A coordination cage encapsulates various anthracenes and BODIPY dyes as homodimers Mixing the two homodimers leads to the formation of anthracene-BODIPY heterodimers Encapsulation can either promote or suppress the photodimerization of anthracenes The homodimer/heterodimer equilibrium can be tuned by light-induced guest exchange
Confinement of small molecules within the cavities of natural and synthetic hosts can greatly affect the physicochemical properties of the bound species; however, to date, such host-guest complexes have been studied mainly in a static context. An important direction is the development of host-guest systems, whereby encapsulation and release of guest molecules can be reversibly controlled using light. Here, we report ternary inclusion complexes comprising an open-window coordination cage and two kinds of photoactive guests, namely, the photodimerizable anthracenes and BODIPY dyes. Alternating exposure to two different colors of light shifts the equilibrium between the encapsulated homodimers and heterodimers, thus dramatically affecting the system’s optical properties. We also find that the rates of both processes—anthracene dimerization and guest exchange—strongly depend on the substitution pattern on both types of guests, which highlights the importance of confinement effects.
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Affiliation(s)
- Julius Gemen
- Department of Molecular Chemistry & Materials Science, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Michał J. Białek
- Department of Molecular Chemistry & Materials Science, Weizmann Institute of Science, Rehovot 76100, Israel
- Department of Chemistry, University of Wrocław, 14 F. Joliot-Curie St., 50383 Wrocław, Poland
| | - Miri Kazes
- Department of Molecular Chemistry & Materials Science, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Linda J.W. Shimon
- Department of Chemical Research Support, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Moran Feller
- Department of Molecular Chemistry & Materials Science, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Sergey N. Semenov
- Department of Molecular Chemistry & Materials Science, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Yael Diskin-Posner
- Department of Chemical Research Support, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Dan Oron
- Department of Molecular Chemistry & Materials Science, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Rafal Klajn
- Department of Molecular Chemistry & Materials Science, Weizmann Institute of Science, Rehovot 76100, Israel
- Corresponding author
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5
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Liu W, Yang ZL, Yang CN, Ying YL, Long YT. Profiling single-molecule reaction kinetics under nanopore confinement. Chem Sci 2022; 13:4109-4114. [PMID: 35440975 PMCID: PMC8985585 DOI: 10.1039/d1sc06837g] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Accepted: 03/13/2022] [Indexed: 02/02/2023] Open
Abstract
The study of a single-molecule reaction under nanoconfinement is beneficial for understanding the reactive intermediates and reaction pathways. However, the kinetics model of the single-molecule reaction under confinement remains elusive. Herein we engineered an aerolysin nanopore reactor to elaborate the single-molecule reaction kinetics under nanoconfinement. By identifying the bond-forming and non-bond-forming events directly, a four-state kinetics model is proposed for the first time. Our results demonstrated that the single-molecule reaction kinetics inside a nanopore depends on the frequency of individual reactants captured and the fraction of effective collision inside the nanopore confined space. This insight will guide the design of confined nanopore reactors for resolving the single-molecule chemistry, and shed light on the mechanistic understanding of dynamic covalent chemistry inside confined systems such as supramolecular cages, coordination cages, and micelles. A four-state kinetics model is proposed to reveal the kinetics of a single-molecule reaction under nanopore confinement.![]()
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Affiliation(s)
- Wei Liu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210023 P. R. China
| | - Zhong-Lin Yang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210023 P. R. China
| | - Chao-Nan Yang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210023 P. R. China
| | - Yi-Lun Ying
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210023 P. R. China .,Chemistry and Biomedicine Innovation Center, Nanjing University Nanjing 210023 P. R. China
| | - Yi-Tao Long
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210023 P. R. China
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6
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Kodura D, Rodrigues LL, Walden SL, Goldmann AS, Frisch H, Barner-Kowollik C. Orange-Light-Induced Photochemistry Gated by pH and Confined Environments. J Am Chem Soc 2022; 144:6343-6348. [PMID: 35364816 DOI: 10.1021/jacs.2c00156] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
We introduce a new photochemically active compound, i.e., pyridinepyrene (PyPy), entailing a pH-active moiety that effects a significant halochromic shift into orange-light (λ = 590 nm) activatable photoreactivity while concomitantly exerting control over its reaction pathways. With blue light (λ = 450 nm) in neutral to basic pH, a [2 + 2] photocycloaddition can be triggered to form a cyclobutene ring in a reversible fashion. If the pH is decreased to acidic conditions, resulting in a halochromic absorption shift, photocycloaddition on the small-molecule level is blocked due to repulsive interactions and exclusive trans-cis isomerization is observed. Through implementation of PyPy into the confined environment of a single-chain nanoparticle (SCNP) design, one can overcome the repulsive forces and exploit the halochromic shift for orange light (λ = 590 nm)-induced cycloaddition and formation of macromolecular three-dimensional (3D) architectures.
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Affiliation(s)
- Daniel Kodura
- School of Chemistry and Physics, Queensland University of Technology (OUT), 2 George Street, Brisbane, QLD 4000, Australia.,Centre for Materials Science, Queensland University of Technology, 2 George Street, Brisbane, QLD 4000, Australia
| | - Leona L Rodrigues
- School of Chemistry and Physics, Queensland University of Technology (OUT), 2 George Street, Brisbane, QLD 4000, Australia.,Centre for Materials Science, Queensland University of Technology, 2 George Street, Brisbane, QLD 4000, Australia
| | - Sarah L Walden
- School of Chemistry and Physics, Queensland University of Technology (OUT), 2 George Street, Brisbane, QLD 4000, Australia.,Centre for Materials Science, Queensland University of Technology, 2 George Street, Brisbane, QLD 4000, Australia
| | - Anja S Goldmann
- School of Chemistry and Physics, Queensland University of Technology (OUT), 2 George Street, Brisbane, QLD 4000, Australia.,Centre for Materials Science, Queensland University of Technology, 2 George Street, Brisbane, QLD 4000, Australia
| | - Hendrik Frisch
- School of Chemistry and Physics, Queensland University of Technology (OUT), 2 George Street, Brisbane, QLD 4000, Australia.,Centre for Materials Science, Queensland University of Technology, 2 George Street, Brisbane, QLD 4000, Australia
| | - Christopher Barner-Kowollik
- School of Chemistry and Physics, Queensland University of Technology (OUT), 2 George Street, Brisbane, QLD 4000, Australia.,Centre for Materials Science, Queensland University of Technology, 2 George Street, Brisbane, QLD 4000, Australia.,Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
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7
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8
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Irshadeen IM, Walden SL, Wegener M, Truong VX, Frisch H, Blinco JP, Barner-Kowollik C. Action Plots in Action: In-Depth Insights into Photochemical Reactivity. J Am Chem Soc 2021; 143:21113-21126. [PMID: 34859671 DOI: 10.1021/jacs.1c09419] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Predicting wavelength-dependent photochemical reactivity is challenging. Herein, we revive the well-established tool of measuring action spectra and adapt the technique to map wavelength-resolved covalent bond formation and cleavage in what we term "photochemical action plots". Underpinned by tunable lasers, which allow excitation of molecules with near-perfect wavelength precision, the photoinduced reactivity of several reaction classes have been mapped in detail. These include photoinduced cycloadditions and bond formation based on photochemically generated o-quinodimethanes and 1,3-dipoles such as nitrile imines as well as radical photoinitiator cleavage. Organized by reaction class, these data demonstrate that UV/vis spectra fail to act as a predictor for photochemical reactivity at a given wavelength in most of the examined reactions, with the photochemical reactivity being strongly red shifted in comparison to the absorption spectrum. We provide an encompassing perspective of the power of photochemical action plots for bond-forming reactions and their emerging applications in the design of wavelength-selective photoresists and photoresponsive soft-matter materials.
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Affiliation(s)
- Ishrath Mohamed Irshadeen
- School of Chemistry and Physics, Queensland University of Technology (QUT), 2 George Street, Brisbane, Queensland 4000, Australia.,Centre for Materials Science, Queensland University of Technology (QUT), 2 George Street, Brisbane, Queensland 4000, Australia
| | - Sarah L Walden
- School of Chemistry and Physics, Queensland University of Technology (QUT), 2 George Street, Brisbane, Queensland 4000, Australia.,Centre for Materials Science, Queensland University of Technology (QUT), 2 George Street, Brisbane, Queensland 4000, Australia
| | - Martin Wegener
- Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Vinh X Truong
- School of Chemistry and Physics, Queensland University of Technology (QUT), 2 George Street, Brisbane, Queensland 4000, Australia.,Centre for Materials Science, Queensland University of Technology (QUT), 2 George Street, Brisbane, Queensland 4000, Australia
| | - Hendrik Frisch
- School of Chemistry and Physics, Queensland University of Technology (QUT), 2 George Street, Brisbane, Queensland 4000, Australia.,Centre for Materials Science, Queensland University of Technology (QUT), 2 George Street, Brisbane, Queensland 4000, Australia
| | - James P Blinco
- School of Chemistry and Physics, Queensland University of Technology (QUT), 2 George Street, Brisbane, Queensland 4000, Australia.,Centre for Materials Science, Queensland University of Technology (QUT), 2 George Street, Brisbane, Queensland 4000, Australia
| | - Christopher Barner-Kowollik
- School of Chemistry and Physics, Queensland University of Technology (QUT), 2 George Street, Brisbane, Queensland 4000, Australia.,Centre for Materials Science, Queensland University of Technology (QUT), 2 George Street, Brisbane, Queensland 4000, Australia.,Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
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9
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Nánási D, Kunfi A, Ábrahám Á, Mayer PJ, Mihály J, Samu GF, Kiss É, Mohai M, London G. Construction and Properties of Donor-Acceptor Stenhouse Adducts on Gold Surfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:3057-3066. [PMID: 33645991 PMCID: PMC8031373 DOI: 10.1021/acs.langmuir.0c03275] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 01/27/2021] [Indexed: 05/15/2023]
Abstract
The construction of a donor-acceptor Stenhouse adduct molecular layer on a gold surface is presented. To avoid the incompatibility of the thiol surface-binding group with the donor-acceptor polyene structure of the switch, an interfacial reaction approach was followed. Poly(dopamine)-supported gold nanoparticles on quartz slides were chosen as substrates, which was expected to facilitate both the interfacial reaction and the switching process by providing favorable steric conditions due to the curved particle surface. The reaction between the surface-bound donor half and the CF3-isoxazolone-based acceptor half was proved to be successful by X-ray photoelectron spectroscopy (XPS). However, UV-vis measurements suggested that a closed, cyclopentenone-containing structure of the switch formed on the surface irreversibly. Analysis of the wetting behavior of the surface revealed spontaneous water spreading that could be associated with conformational changes of the closed isomer.
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Affiliation(s)
- Dalma
Edit Nánási
- MTA
TTK Lendület Functional Organic Materials Research Group, Institute of Organic Chemistry, Research Centre for
Natural Sciences, Magyar tudósok körútja 2, 1117 Budapest, Hungary
| | - Attila Kunfi
- MTA
TTK Lendület Functional Organic Materials Research Group, Institute of Organic Chemistry, Research Centre for
Natural Sciences, Magyar tudósok körútja 2, 1117 Budapest, Hungary
| | - Ágnes Ábrahám
- Laboratory
of Interfaces and Nanostructures, Eötvös
Loránd University, Pázmány Péter stny. 1/A, 1117 Budapest, Hungary
| | - Péter J. Mayer
- MTA
TTK Lendület Functional Organic Materials Research Group, Institute of Organic Chemistry, Research Centre for
Natural Sciences, Magyar tudósok körútja 2, 1117 Budapest, Hungary
- Institute
of Chemistry, University of Szeged, Rerrich tér 1, 6720 Szeged, Hungary
| | - Judith Mihály
- Biological
Nanochemistry Research Group, Institute
of Materials and Environmental Chemistry, Research Centre for Natural
Sciences, Magyar tudósok
körútja 2, 1117 Budapest, Hungary
| | - Gergely F. Samu
- Department
of Physical Chemistry and Materials Science, Interdisciplinary Excellence
Centre, University of Szeged, Rerrich Square 1, H-6720 Szeged, Hungary
| | - Éva Kiss
- Laboratory
of Interfaces and Nanostructures, Eötvös
Loránd University, Pázmány Péter stny. 1/A, 1117 Budapest, Hungary
| | - Miklós Mohai
- Institute
of Materials and Environmental Chemistry, Research Centre for Natural
Sciences, Magyar tudósok
körútja 2, 1117 Budapest, Hungary
| | - Gábor London
- MTA
TTK Lendület Functional Organic Materials Research Group, Institute of Organic Chemistry, Research Centre for
Natural Sciences, Magyar tudósok körútja 2, 1117 Budapest, Hungary
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10
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Dichiarante V, Pigliacelli C, Metrangolo P, Baldelli Bombelli F. Confined space design by nanoparticle self-assembly. Chem Sci 2020; 12:1632-1646. [PMID: 34163923 PMCID: PMC8179300 DOI: 10.1039/d0sc05697a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Accepted: 12/22/2020] [Indexed: 12/26/2022] Open
Abstract
Nanoparticle (NP) self-assembly has led to the fabrication of an array of functional nanoscale systems, having diverse architectures and functionalities. In this perspective, we discuss the design and application of NP suprastructures (SPs) characterized by nanoconfined compartments in their self-assembled framework, providing an overview about SP synthetic strategies reported to date and the role of their confined nanocavities in applications in several high-end fields. We also set to give our contribution towards the formation of more advanced nanocompartmentalized SPs able to work in dynamic manners, discussing the opportunities of further advances in NP self-assembly and SP research.
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Affiliation(s)
- Valentina Dichiarante
- Laboratory of Supramolecular and Bio-Nanomaterials (SupraBioNanoLab), Department of Chemistry, Materials, and Chemical Engineering "Giulio Natta", Politecnico di Milano Via Luigi Mancinelli 7 20131 Milan Italy
| | - Claudia Pigliacelli
- Laboratory of Supramolecular and Bio-Nanomaterials (SupraBioNanoLab), Department of Chemistry, Materials, and Chemical Engineering "Giulio Natta", Politecnico di Milano Via Luigi Mancinelli 7 20131 Milan Italy
| | - Pierangelo Metrangolo
- Laboratory of Supramolecular and Bio-Nanomaterials (SupraBioNanoLab), Department of Chemistry, Materials, and Chemical Engineering "Giulio Natta", Politecnico di Milano Via Luigi Mancinelli 7 20131 Milan Italy
| | - Francesca Baldelli Bombelli
- Laboratory of Supramolecular and Bio-Nanomaterials (SupraBioNanoLab), Department of Chemistry, Materials, and Chemical Engineering "Giulio Natta", Politecnico di Milano Via Luigi Mancinelli 7 20131 Milan Italy
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11
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Bai S, Ma LL, Yang T, Wang F, Wang LF, Hahn FE, Wang YY, Han YF. Supramolecular-induced regiocontrol over the photochemical [4 + 4] cyclodimerization of NHC- or azole-substituted anthracenes. Chem Sci 2020; 12:2165-2171. [PMID: 34163981 PMCID: PMC8179318 DOI: 10.1039/d0sc06017h] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Thanks to the impressive control that microenvironments within enzymes can have over substrates, many biological reactions occur with high regio- and stereoselectivity. However, comparable regio- and stereoselectivity is extremely difficult to achieve for many types of reactions, particularly photochemical cycloaddition reactions in homogeneous solutions. Here, we describe a supramolecular templating strategy that enables photochemical [4 + 4] cycloaddition of 2,6-difunctionalized anthracenes with unique regio- and stereoselectivity and reactivity using a concept known as the supramolecular approach. The reaction of 2,6-azolium substituted anthracenes H4-L(PF6)2 (L = 1a–1c) with Ag2O yielded complexes anti-[Ag2L2](PF6)4 featuring an antiparallel orientation of the anthracene groups. Irradiation of complexes anti-[Ag2L2](PF6)4 proceeded under [4 + 4] cycloaddition linking the two anthracene moieties to give cyclodimers anti-[Ag2(2)](PF6)2. Reaction of 2,6-azole substituted anthracenes with a dinuclear complex [Cl-Au-NHC–NHC-Au-Cl] yields tetranuclear assemblies with the anthracene moieties oriented in syn-fashion. Irradiation and demetallation gives a [4 + 4] syn-photodimer of two anthracenes. The stereoselectivity of the [4 + 4] cycloaddition between two anthracene moieties is determined by their orientation in the metallosupramolecular assemblies. A supramolecular templating strategy that enables the photochemical [4 + 4] cycloaddition of 2,6-difunctionalized anthracene derivatives with unique stereoselectivity has been developed based on metal-NHC units.![]()
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Affiliation(s)
- Sha Bai
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry and Materials Science, Northwest University Xi'an 710127 P. R. China
| | - Li-Li Ma
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry and Materials Science, Northwest University Xi'an 710127 P. R. China
| | - Tao Yang
- School of Science, MOE Key Laboratory for Non-Equilibrium Synthesis and Modulation of Condensed Matter, Xi'an Jiaotong University Xi'an 710049 P. R. China
| | - Fang Wang
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry and Materials Science, Northwest University Xi'an 710127 P. R. China
| | - Li-Feng Wang
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry and Materials Science, Northwest University Xi'an 710127 P. R. China
| | - F Ekkehardt Hahn
- Institut für Anorganische und Analytische Chemie, Westfälische Wilhelms-Universität Münster Corrensstraße 30 48149 Münster Germany
| | - Yao-Yu Wang
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry and Materials Science, Northwest University Xi'an 710127 P. R. China
| | - Ying-Feng Han
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry and Materials Science, Northwest University Xi'an 710127 P. R. China
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12
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Abstract
![]()
In nature, light is harvested by photoactive proteins to drive
a range of biological processes, including photosynthesis, phototaxis,
vision, and ultimately life. Bacteriorhodopsin, for example, is a
protein embedded within archaeal cell membranes that binds the chromophore
retinal within its hydrophobic pocket. Exposure to light triggers
regioselective photoisomerization of the confined retinal, which in
turn initiates a cascade of conformational changes within the protein,
triggering proton flux against the concentration gradient, providing
the microorganisms with the energy to live. We are inspired by these
functions in nature to harness light energy using synthetic photoswitches
under confinement. Like retinal, synthetic photoswitches require some
degree of conformational flexibility to isomerize. In nature, the
conformational change associated with retinal isomerization is accommodated
by the structural flexibility of the opsin host, yet it results in
steric communication between the chromophore and the protein. Similarly,
we strive to design systems wherein isomerization of confined photoswitches
results in steric communication between a photoswitch and its confining
environment. To achieve this aim, a balance must be struck between
molecular crowding and conformational freedom under confinement: too
much crowding prevents switching, whereas too much freedom resembles
switching of isolated molecules in solution, preventing communication. In this Account, we discuss five classes of synthetic light-switchable
compounds—diarylethenes, anthracenes, azobenzenes, spiropyrans,
and donor–acceptor Stenhouse adducts—comparing their
behaviors under confinement and in solution. The environments employed
to confine these photoswitches are diverse, ranging from planar surfaces
to nanosized cavities within coordination cages, nanoporous frameworks,
and nanoparticle aggregates. The trends that emerge are primarily
dependent on the nature of the photoswitch and not on the material
used for confinement. In general, we find that photoswitches requiring
less conformational freedom for switching are, as expected, more straightforward
to isomerize reversibly under confinement. Because these compounds
undergo only small structural changes upon isomerization, however,
switching does not propagate into communication with their environment.
Conversely, photoswitches that require more conformational freedom
are more challenging to switch under confinement but also can influence
system-wide behavior. Although we are primarily interested in
the effects of geometric
constraints on photoswitching under confinement, additional effects
inevitably emerge when a compound is removed from solution and placed
within a new, more crowded environment. For instance, we have found
that compounds that convert to zwitterionic isomers upon light irradiation
often experience stabilization of these forms under confinement. This
effect results from the mutual stabilization of zwitterions that are
brought into close proximity on surfaces or within cavities. Furthermore,
photoswitches can experience preorganization under confinement, influencing
the selectivity and efficiency of their photoreactions. Because intermolecular
interactions arising from confinement cannot be considered independently
from the effects of geometric constraints, we describe all confinement
effects concurrently throughout this Account.
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Affiliation(s)
- Angela B. Grommet
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Lucia M. Lee
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Rafal Klajn
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot 76100, Israel
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13
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Pesce L, Perego C, Grommet AB, Klajn R, Pavan GM. Molecular Factors Controlling the Isomerization of Azobenzenes in the Cavity of a Flexible Coordination Cage. J Am Chem Soc 2020; 142:9792-9802. [PMID: 32353237 PMCID: PMC7644116 DOI: 10.1021/jacs.0c03444] [Citation(s) in RCA: 64] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
![]()
Photoswitchable
molecules are employed for many applications, from
the development of active materials to the design of stimuli-responsive
molecular systems and light-powered molecular machines. To fully exploit
their potential, we must learn ways to control the mechanism and kinetics
of their photoinduced isomerization. One possible strategy involves
confinement of photoresponsive switches such as azobenzenes or spiropyrans
within crowded molecular environments, which may allow control over
their light-induced conversion. However, the molecular factors that
influence and control the switching process under realistic conditions
and within dynamic molecular regimes often remain difficult to ascertain.
As a case study, here we have employed molecular models to probe the
isomerization of azobenzene guests within a Pd(II)-based coordination
cage host in water. Atomistic molecular dynamics and metadynamics
simulations allow us to characterize the flexibility of the cage in
the solvent, the (rare) guest encapsulation and release events, and
the relative probability/kinetics of light-induced isomerization of
azobenzene analogues in these host–guest systems. In this way,
we can reconstruct the mechanism of azobenzene switching inside the
cage cavity and explore key molecular factors that may control this
event. We obtain a molecular-level insight on the effects of crowding
and host–guest interactions on azobenzene isomerization. The
detailed picture elucidated by this study may enable the rational
design of photoswitchable systems whose reactivity can be controlled
via host–guest interactions.
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Affiliation(s)
- Luca Pesce
- Department of Innovative Technologies, University of Applied Sciences and Arts of Southern Switzerland, Galleria 2, Via Cantonale 2c, CH-6928 Manno, Switzerland
| | - Claudio Perego
- Department of Innovative Technologies, University of Applied Sciences and Arts of Southern Switzerland, Galleria 2, Via Cantonale 2c, CH-6928 Manno, Switzerland
| | - Angela B Grommet
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Rafal Klajn
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Giovanni M Pavan
- Department of Innovative Technologies, University of Applied Sciences and Arts of Southern Switzerland, Galleria 2, Via Cantonale 2c, CH-6928 Manno, Switzerland.,Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Turin, Italy
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14
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Bian T, Chu Z, Klajn R. The Many Ways to Assemble Nanoparticles Using Light. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1905866. [PMID: 31709655 DOI: 10.1002/adma.201905866] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2019] [Revised: 10/07/2019] [Indexed: 06/10/2023]
Abstract
The ability to reversibly assemble nanoparticles using light is both fundamentally interesting and important for applications ranging from reversible data storage to controlled drug delivery. Here, the diverse approaches that have so far been developed to control the self-assembly of nanoparticles using light are reviewed and compared. These approaches include functionalizing nanoparticles with monolayers of photoresponsive molecules, placing them in photoresponsive media capable of reversibly protonating the particles under light, and decorating plasmonic nanoparticles with thermoresponsive polymers, to name just a few. The applicability of these methods to larger, micrometer-sized particles is also discussed. Finally, several perspectives on further developments in the field are offered.
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Affiliation(s)
- Tong Bian
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot, 76100, Israel
| | - Zonglin Chu
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot, 76100, Israel
| | - Rafal Klajn
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot, 76100, Israel
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15
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Grommet AB, Feller M, Klajn R. Chemical reactivity under nanoconfinement. NATURE NANOTECHNOLOGY 2020; 15:256-271. [PMID: 32303705 DOI: 10.1038/s41565-020-0652-2] [Citation(s) in RCA: 300] [Impact Index Per Article: 75.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Accepted: 01/28/2020] [Indexed: 06/11/2023]
Abstract
Confining molecules can fundamentally change their chemical and physical properties. Confinement effects are considered instrumental at various stages of the origins of life, and life continues to rely on layers of compartmentalization to maintain an out-of-equilibrium state and efficiently synthesize complex biomolecules under mild conditions. As interest in synthetic confined systems grows, we are realizing that the principles governing reactivity under confinement are the same in abiological systems as they are in nature. In this Review, we categorize the ways in which nanoconfinement effects impact chemical reactivity in synthetic systems. Under nanoconfinement, chemical properties can be modulated to increase reaction rates, enhance selectivity and stabilize reactive species. Confinement effects also lead to changes in physical properties. The fluorescence of light emitters, the colours of dyes and electronic communication between electroactive species can all be tuned under confinement. Within each of these categories, we elucidate design principles and strategies that are widely applicable across a range of confined systems, specifically highlighting examples of different nanocompartments that influence reactivity in similar ways.
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Affiliation(s)
- Angela B Grommet
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot, Israel
| | - Moran Feller
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot, Israel
| | - Rafal Klajn
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot, Israel.
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16
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Jiang Z, Tan ML, Taheri M, Yan Q, Tsuzuki T, Gardiner MG, Diggle B, Connal LA. Strong, Self‐Healable, and Recyclable Visible‐Light‐Responsive Hydrogel Actuators. Angew Chem Int Ed Engl 2020; 59:7049-7056. [DOI: 10.1002/anie.201916058] [Citation(s) in RCA: 72] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2019] [Revised: 01/20/2020] [Indexed: 01/12/2023]
Affiliation(s)
- Zhen Jiang
- Research School of Chemistry Australian National University Canberra ACT 2601 Australia
| | - Ming Li Tan
- Research School of Chemistry Australian National University Canberra ACT 2601 Australia
| | - Mahdiar Taheri
- Research School of Electrical, Energy, and Materials Engineering Australian National University Canberra ACT 2601 Australia
| | - Qiao Yan
- Research School of Chemistry Australian National University Canberra ACT 2601 Australia
| | - Takuya Tsuzuki
- Research School of Electrical, Energy, and Materials Engineering Australian National University Canberra ACT 2601 Australia
| | - Michael G. Gardiner
- Research School of Chemistry Australian National University Canberra ACT 2601 Australia
| | - Broden Diggle
- Research School of Chemistry Australian National University Canberra ACT 2601 Australia
| | - Luke A. Connal
- Research School of Chemistry Australian National University Canberra ACT 2601 Australia
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17
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Jiang Z, Tan ML, Taheri M, Yan Q, Tsuzuki T, Gardiner MG, Diggle B, Connal LA. Strong, Self‐Healable, and Recyclable Visible‐Light‐Responsive Hydrogel Actuators. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201916058] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Zhen Jiang
- Research School of Chemistry Australian National University Canberra ACT 2601 Australia
| | - Ming Li Tan
- Research School of Chemistry Australian National University Canberra ACT 2601 Australia
| | - Mahdiar Taheri
- Research School of Electrical, Energy, and Materials Engineering Australian National University Canberra ACT 2601 Australia
| | - Qiao Yan
- Research School of Chemistry Australian National University Canberra ACT 2601 Australia
| | - Takuya Tsuzuki
- Research School of Electrical, Energy, and Materials Engineering Australian National University Canberra ACT 2601 Australia
| | - Michael G. Gardiner
- Research School of Chemistry Australian National University Canberra ACT 2601 Australia
| | - Broden Diggle
- Research School of Chemistry Australian National University Canberra ACT 2601 Australia
| | - Luke A. Connal
- Research School of Chemistry Australian National University Canberra ACT 2601 Australia
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18
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Lu H, Wang X, Zhou X, Zhang W, Wang X. A water-soluble sunlight erasable ink based on [4 + 4] cycloaddition of 9-substituted anthracene. Polym Chem 2020. [DOI: 10.1039/d0py00760a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Here we report a water-soluble sunlight erasable ink based on 9-substituted anthracene for applications in data confidentiality or paper reuse.
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Affiliation(s)
- Haipeng Lu
- Department of Chemistry
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
| | - Xiang Wang
- Department of Chemistry
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
| | - Xianjing Zhou
- Department of Chemistry
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
| | - Wei Zhang
- Department of Chemistry
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
| | - Xinping Wang
- Department of Chemistry
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
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19
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Kislyak A, Frisch H, Gernhardt M, Van Steenberge PHM, D'hooge DR, Barner‐Kowollik C. Time‐Dependent Differential and Integral Quantum Yields for Wavelength‐Dependent [4+4] Photocycloadditions. Chemistry 2019; 26:478-484. [DOI: 10.1002/chem.201903641] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Indexed: 12/12/2022]
Affiliation(s)
- Anastasia Kislyak
- School of Chemistry, Physics and Mechanical Engineering Queensland University of Technology (QUT) 2 George Street QLD 4000 Brisbane Australia
- Laboratory for Chemical Technology Ghent University Technologiepark 125 9052 Ghent Belgium
| | - Hendrik Frisch
- School of Chemistry, Physics and Mechanical Engineering Queensland University of Technology (QUT) 2 George Street QLD 4000 Brisbane Australia
| | - Marvin Gernhardt
- School of Chemistry, Physics and Mechanical Engineering Queensland University of Technology (QUT) 2 George Street QLD 4000 Brisbane Australia
| | | | - Dagmar R. D'hooge
- Laboratory for Chemical Technology Ghent University Technologiepark 125 9052 Ghent Belgium
- Centre for Textiles Science and Technology Ghent University Technologiepark 70a 9052 Ghent Belgium
| | - Christopher Barner‐Kowollik
- School of Chemistry, Physics and Mechanical Engineering Queensland University of Technology (QUT) 2 George Street QLD 4000 Brisbane Australia
- Macromolecular Architectures Institut für Technische Chemie und Polymerchemie Karlsruhe Institute of Technology (KIT) Engesserstrasse 18 76128 Karlsruhe Germany
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20
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Hanopolskyi AI, De S, Białek MJ, Diskin-Posner Y, Avram L, Feller M, Klajn R. Reversible switching of arylazopyrazole within a metal-organic cage. Beilstein J Org Chem 2019; 15:2398-2407. [PMID: 31666874 PMCID: PMC6808206 DOI: 10.3762/bjoc.15.232] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Accepted: 09/26/2019] [Indexed: 12/19/2022] Open
Abstract
Arylazopyrazoles represent a new family of molecular photoswitches characterized by a near-quantitative conversion between two states and long thermal half-lives of the metastable state. Here, we investigated the behavior of a model arylazopyrazole in the presence of a self-assembled cage based on Pd–imidazole coordination. Owing to its high water solubility, the cage can solubilize the E isomer of arylazopyrazole, which, by itself, is not soluble in water. NMR spectroscopy and X-ray crystallography have independently demonstrated that each cage can encapsulate two molecules of E-arylazopyrazole. UV-induced switching to the Z isomer was accompanied by the release of one of the two guests from the cage and the formation of a 1:1 cage/Z-arylazopyrazole inclusion complex. DFT calculations suggest that this process involves a dramatic change in the conformation of the cage. Back-isomerization was induced with green light and resulted in the initial 1:2 cage/E-arylazopyrazole complex. This back-isomerization reaction also proceeded in the dark, with a rate significantly higher than in the absence of the cage.
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Affiliation(s)
- Anton I Hanopolskyi
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Soumen De
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Michał J Białek
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Yael Diskin-Posner
- Chemical Research Support, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Liat Avram
- Chemical Research Support, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Moran Feller
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Rafal Klajn
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot 76100, Israel
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21
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Goldmann AS, Boase NRB, Michalek L, Blinco JP, Welle A, Barner-Kowollik C. Adaptable and Reprogrammable Surfaces. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1902665. [PMID: 31414512 DOI: 10.1002/adma.201902665] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Revised: 06/06/2019] [Indexed: 06/10/2023]
Abstract
Establishing control over chemical reactions on interfaces is a key challenge in contemporary surface and materials science, in particular when introducing well-defined functionalities in a reversible fashion. Reprogrammable, adaptable and functional interfaces require sophisticated chemistries to precisely equip them with specific functionalities having tailored properties. In the last decade, reversible chemistries-both covalent and noncovalent-have paved the way to precision functionalize 2 or 3D structures that provide both spatial and temporal control. A critical literature assessment reveals that methodologies for writing and erasing substrates exist, yet are still far from reaching their full potential. It is thus critical to assess the current status and to identify avenues to overcome the existing limitations. Herein, the current state-of-the-art in the field of reversible chemistry on surfaces is surveyed, while concomitantly identifying the challenges-not only synthetic but also in current surface characterization methods. The potential within reversible chemistry on surfaces to function as true writeable memories devices is identified, and the latest developments in readout technologies are discussed. Finally, we explore how spatial and temporal control over reversible, light-induced chemistries has the potential to drive the future of functional interface design, especially when combined with powerful laser lithographic applications.
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Affiliation(s)
- Anja S Goldmann
- School of Chemistry, Physics, and Mechanical Engineering, Queensland University of Technology (QUT), 2 George Street, Brisbane, QLD, 4000, Australia
| | - Nathan R B Boase
- School of Chemistry, Physics, and Mechanical Engineering, Queensland University of Technology (QUT), 2 George Street, Brisbane, QLD, 4000, Australia
| | - Lukas Michalek
- School of Chemistry, Physics, and Mechanical Engineering, Queensland University of Technology (QUT), 2 George Street, Brisbane, QLD, 4000, Australia
| | - James P Blinco
- School of Chemistry, Physics, and Mechanical Engineering, Queensland University of Technology (QUT), 2 George Street, Brisbane, QLD, 4000, Australia
| | - Alexander Welle
- Institute of Functional Interfaces, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Christopher Barner-Kowollik
- School of Chemistry, Physics, and Mechanical Engineering, Queensland University of Technology (QUT), 2 George Street, Brisbane, QLD, 4000, Australia
- Macromolecular Architectures, Institut für Technische Chemie und Polymerchemie, Karlsruhe Institute of Technology (KIT), Engesserstr. 18, 76131, Karlsruhe, Germany
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22
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4-Azafluorenone and α-Carboline Fluorophores with Green and Violet/Blue Emission. Molecules 2019; 24:molecules24132378. [PMID: 31252565 PMCID: PMC6651119 DOI: 10.3390/molecules24132378] [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: 06/05/2019] [Revised: 06/21/2019] [Accepted: 06/26/2019] [Indexed: 11/17/2022] Open
Abstract
The emission properties of three 4-azafluorenone and five new α-carboline fluorophores in both solution and thin solid films were investigated. Fluorescence of the azafluorenone is clearly enhanced in thin solid films due to the presence of phenyl/biphenyl rotors, and these derivatives can be classified as green Aggregation-Induced Emission luminogens (AIEgens) with a non-emissive heteroaromatic core structure. Compared to azafluorenones, emission of α-carbolines is hypsochromically shifted to the blue region of the electromagnetic spectrum, and most of these derivatives exhibit strong violet-blue fluorescence in both solution and thin solid film layers. Further, the effective mobility and electroluminescence of new α-carbolines were investigated in prepared organic field-effect transistors and organic light-emitting diodes, respectively.
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23
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Das S, Okamura N, Yagi S, Ajayaghosh A. Supramolecular Gel Phase Controlled [4 + 2] Diels–Alder Photocycloaddition for Electroplex Mediated White Electroluminescence. J Am Chem Soc 2019; 141:5635-5639. [DOI: 10.1021/jacs.9b00955] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Satyajit Das
- Photosciences and Photonics Section, Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram 695019, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Naoki Okamura
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 5999-8531, Japan
| | - Shigeyuki Yagi
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 5999-8531, Japan
| | - Ayyappanpillai Ajayaghosh
- Photosciences and Photonics Section, Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram 695019, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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24
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Van Damme J, van den Berg O, Brancart J, Van Assche G, Du Prez F. A novel donor-π-acceptor anthracene monomer: Towards faster and milder reversible dimerization. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.01.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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25
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Grzelczak M, Liz-Marzán LM, Klajn R. Stimuli-responsive self-assembly of nanoparticles. Chem Soc Rev 2019; 48:1342-1361. [DOI: 10.1039/c8cs00787j] [Citation(s) in RCA: 238] [Impact Index Per Article: 47.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Ligand-protected nanoparticles can serve as attractive building blocks for constructing complex chemical systems.
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Affiliation(s)
- Marek Grzelczak
- Donostia International Physics Center (DIPC)
- 20018 Donostia-San Sebastián
- Spain
- Ikerbasque
- Basque Foundation for Science
| | - Luis M. Liz-Marzán
- Ikerbasque
- Basque Foundation for Science
- 48013 Bilbao
- Spain
- CIC biomaGUNE and CIBER-BBN
| | - Rafal Klajn
- Department of Organic Chemistry
- Weizmann Institute of Science
- Rehovot 76100
- Israel
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26
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Chu Z, Han Y, Bian T, De S, Král P, Klajn R. Supramolecular Control of Azobenzene Switching on Nanoparticles. J Am Chem Soc 2018; 141:1949-1960. [DOI: 10.1021/jacs.8b09638] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Zonglin Chu
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Yanxiao Han
- Department of Chemistry, University of Illinois at Chicago, Chicago, Illinois 60607, United States
| | - Tong Bian
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Soumen De
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Petr Král
- Department of Chemistry, University of Illinois at Chicago, Chicago, Illinois 60607, United States
- Department of Physics and Department of Biopharmaceutical Sciences, University of Illinois at Chicago, Chicago, Illinois 60607, United States
| | - Rafal Klajn
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot 76100, Israel
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27
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Contemporary Photoligation Chemistry: The Visible Light Challenge. Chemistry 2018; 25:3700-3709. [DOI: 10.1002/chem.201803755] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2018] [Indexed: 01/17/2023]
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28
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Lee KF, Bai W, Sung HHY, Williams ID, Lin Z, Jia G. Rhenium-Promoted C-C Bond-Cleavage Reactions of Internal Propargyl Alcohols. Chemistry 2018; 24:9760-9764. [PMID: 29878488 DOI: 10.1002/chem.201801448] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Indexed: 12/14/2022]
Abstract
The first examples of C-C bond cleavage reactions of internal propargyl alcohols to give vinylidene complexes are described. Treatment of [Re(dppm)3 ]I with RC≡CC(OH)R'R'' (R=aryl, alkyl; C(OH)R'R''=C(OH)Ph2, C(OH)Me2 , C(OH)HPh, C(OH)H2 ) produced the vinylidene complexes ReI(=C=CHR)(dppm)2 with the elimination of C(O)R'R''. Computational studies support that the reactions proceed through a β-alkynyl elimination of alkoxide intermediates Re{OC(R')(R'')C≡CR}(dppm)2 .
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Affiliation(s)
- Kui Fun Lee
- Department of Chemistry, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Wei Bai
- Department of Chemistry, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Herman H Y Sung
- Department of Chemistry, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Ian D Williams
- Department of Chemistry, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Zhenyang Lin
- Department of Chemistry, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Guochen Jia
- Department of Chemistry, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
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29
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Fujii S, Ishimura R, Nakagawa A, Kitamura N. A novel multimode sensor showing cation-dependent fluorescence colour. Phys Chem Chem Phys 2018; 19:28943-28949. [PMID: 29058743 DOI: 10.1039/c7cp05734b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel sensor, 4-[2-(9-anthryl)ethynyl]-1,10-phenanthroline (1), exhibits highly intense fluorescent in the wavelength region of 440-600 nm (maximum wavelength (λf) = 470 nm) with the quantum yield (Φf) and lifetime (τf) being 0.90 and 4.2 ns, respectively, in CH3CN at 298 K. In the presence of a divalent cation (M2+ = Ba2+, Ca2+, Mg2+, or Zn2+) in CH3CN, sensor 1 can tightly bind M2+ and shows intense fluorescent (Φf = 0.90-0.19, τf = 2.1-6.9 ns) with the color being dependent on the nature of M2+ (λf = 514-584 nm). The results demonstrate that a single fluorescent sensor 1 is capable of simultaneous identification and quantitation of M2+ based on λf and the fluorescent intensity (Φf), respectively. The fluorescence maximum energy of the [1-M2+] complex is shown to correlate linearly with the pKa value of M2+. The spectroscopic and photophysical properties of sensor 1 in the absence and presence of M2+ are also discussed.
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Affiliation(s)
- Sho Fujii
- Department of Chemistry, Faculty of Science, Hokkaido University, Kita-10, Nishi-8, Kita-ku, Sapporo 060-0810, Japan.
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30
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Kato D, Sakai H, Araki Y, Wada T, Tkachenko NV, Hasobe T. Concentration-dependent photophysical switching in mixed self-assembled monolayers of pentacene and perylenediimide on gold nanoclusters. Phys Chem Chem Phys 2018. [DOI: 10.1039/c8cp00174j] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The precise control and switching of photophysical processes such as singlet fission, electron transfer and excimer were performed using mixed SAMs of pentacene and perylenediimide units on Au nanoclusters.
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Affiliation(s)
- Daiki Kato
- Department of Chemistry
- Faculty of Science and Technology
- Keio University
- Kanagawa 223-8522
- Japan
| | - Hayato Sakai
- Department of Chemistry
- Faculty of Science and Technology
- Keio University
- Kanagawa 223-8522
- Japan
| | - Yasuyuki Araki
- Institute of Multidisciplinary Research for Advanced Materials
- Tohoku University
- Sendai 980-8577
- Japan
| | - Takehiko Wada
- Institute of Multidisciplinary Research for Advanced Materials
- Tohoku University
- Sendai 980-8577
- Japan
| | - Nikolai V. Tkachenko
- Laboratory of Chemistry and Bioengineering
- Tampere University of Technology
- 33101 Tampere
- Finland
| | - Taku Hasobe
- Department of Chemistry
- Faculty of Science and Technology
- Keio University
- Kanagawa 223-8522
- Japan
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31
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Yao H, Wang J, Mi S. Photo Processing for Biomedical Hydrogels Design and Functionality: A Review. Polymers (Basel) 2017; 10:E11. [PMID: 30966045 PMCID: PMC6415176 DOI: 10.3390/polym10010011] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Revised: 12/18/2017] [Accepted: 12/19/2017] [Indexed: 01/20/2023] Open
Abstract
A large number of opportunities for biomedical hydrogel design and functionality through photo-processing have stretched the limits of innovation. As both photochemical understanding and engineering technologies continue to develop, more complicated geometries and spatiotemporal manipulations can be realized through photo-exposure, producing multifunctional hydrogels with specific chemical, biological and physical characteristics for the achievement of biomedical goals. This report describes the role that light has recently played in the synthesis and functionalization of biomedical hydrogels and primarily the design of photoresponsive hydrogels via different chemical reactions (photo crosslinking and photo degradation) and conventional light curing processes (micropatterning, stereolithography and two/multiphoton techniques) as well as typical biomedical applications of the hydrogels (cell culture, differentiation and in vivo vascularization) and their promising future.
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Affiliation(s)
- Hongyi Yao
- Biomanufacturing Engineering Laboratory, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China.
| | - Jieqiong Wang
- Biomanufacturing Engineering Laboratory, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China.
| | - Shengli Mi
- Biomanufacturing Engineering Laboratory, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China.
- Open FIESTA Center, Tsinghua University, Shenzhen 518055, China.
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32
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Udayabhaskararao T, Altantzis T, Houben L, Coronado-Puchau M, Langer J, Popovitz-Biro R, Liz-Marzán LM, Vuković L, Král P, Bals S, Klajn R. Tunable porous nanoallotropes prepared by post-assembly etching of binary nanoparticle superlattices. Science 2017; 358:514-518. [DOI: 10.1126/science.aan6046] [Citation(s) in RCA: 96] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2017] [Accepted: 09/21/2017] [Indexed: 01/03/2023]
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33
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Truong VX, Li F, Forsythe JS. Versatile Bioorthogonal Hydrogel Platform by Catalyst-Free Visible Light Initiated Photodimerization of Anthracene. ACS Macro Lett 2017; 6:657-662. [PMID: 35650867 DOI: 10.1021/acsmacrolett.7b00312] [Citation(s) in RCA: 86] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Recent developments in photochemistry have introduced new methods to prepare hydrogels initiated by nonharmful light which is essential for encapsulation of cells and bioactive components. However, bioorthogonal photoclick reactions generally requires two components for cross-linking and, in many cases, the formation of a reactive intermediate that may cross-react with nucleophiles in biological media. Here we report the utilization of a visible light triggered dimerization of electron-rich anthracene for polymer cross-linking to form bulk hydrogels and microgels. Incorporation of gelatin within the hydrogel enhanced cell attachment and viability after 7 days of culture and spatiotemporal conjugation of a bioactive component using photochemical dimerization of anthracene was demonstrated. This work therefore introduces a simple yet powerful tool for light modulated bioorthogonal polymer cross-linking, which can be utilized in various bioengineering applications.
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Affiliation(s)
- Vinh X. Truong
- Department
of Materials Science and Engineering, Monash Institute of Medical
Engineering, Monash University, Clayton, 3800 VIC, Australia
| | - Fanyi Li
- Department
of Materials Science and Engineering, Monash Institute of Medical
Engineering, Monash University, Clayton, 3800 VIC, Australia
- CSIRO Manufacturing, Bayview Avenue, Clayton, VIC 3168, Australia
| | - John S. Forsythe
- Department
of Materials Science and Engineering, Monash Institute of Medical
Engineering, Monash University, Clayton, 3800 VIC, Australia
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34
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Ahrens J, Bian T, Vexler T, Klajn R. Irreversible Bleaching of Donor-Acceptor Stenhouse Adducts on the Surfaces of Magnetite Nanoparticles. CHEMPHOTOCHEM 2017. [DOI: 10.1002/cptc.201700009] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Johannes Ahrens
- Department of Organic Chemistry; Weizmann Institute of Science; Rehovot 76100 Israel
| | - Tong Bian
- Department of Organic Chemistry; Weizmann Institute of Science; Rehovot 76100 Israel
| | - Tom Vexler
- Department of Organic Chemistry; Weizmann Institute of Science; Rehovot 76100 Israel
| | - Rafal Klajn
- Department of Organic Chemistry; Weizmann Institute of Science; Rehovot 76100 Israel
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35
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Claus TK, Telitel S, Welle A, Bastmeyer M, Vogt AP, Delaittre G, Barner-Kowollik C. Light-driven reversible surface functionalization with anthracenes: visible light writing and mild UV erasing. Chem Commun (Camb) 2017; 53:1599-1602. [DOI: 10.1039/c6cc09897e] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
We introduce a methodology to reversibly pattern planar surfaces via the light-induced dimerization of anthracenes, particularly involving a 9-triazolylanthracene motif.
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Affiliation(s)
- Tanja K. Claus
- Preparative Macromolecular Chemistry
- Institut für Technische Chemie und Polymerchemie
- Karlsruhe Institute of Technology (KIT)
- 76131 Karlsruhe
- Germany
| | - Siham Telitel
- Preparative Macromolecular Chemistry
- Institut für Technische Chemie und Polymerchemie
- Karlsruhe Institute of Technology (KIT)
- 76131 Karlsruhe
- Germany
| | - Alexander Welle
- Preparative Macromolecular Chemistry
- Institut für Technische Chemie und Polymerchemie
- Karlsruhe Institute of Technology (KIT)
- 76131 Karlsruhe
- Germany
| | - Martin Bastmeyer
- Zoological Institute
- Cell and Neurobiology
- Karlsruhe Institute of Technology (KIT)
- 76131 Karlsruhe
- Germany
| | - Andrew P. Vogt
- Preparative Macromolecular Chemistry
- Institut für Technische Chemie und Polymerchemie
- Karlsruhe Institute of Technology (KIT)
- 76131 Karlsruhe
- Germany
| | - Guillaume Delaittre
- Preparative Macromolecular Chemistry
- Institut für Technische Chemie und Polymerchemie
- Karlsruhe Institute of Technology (KIT)
- 76131 Karlsruhe
- Germany
| | - Christopher Barner-Kowollik
- Preparative Macromolecular Chemistry
- Institut für Technische Chemie und Polymerchemie
- Karlsruhe Institute of Technology (KIT)
- 76131 Karlsruhe
- Germany
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36
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Kundu PK, Das S, Ahrens J, Klajn R. Controlling the lifetimes of dynamic nanoparticle aggregates by spiropyran functionalization. NANOSCALE 2016; 8:19280-19286. [PMID: 27830865 DOI: 10.1039/c6nr05959g] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Novel light-responsive nanoparticles were synthesized by decorating the surfaces of gold and silver nanoparticles with a nitrospiropyran molecular photoswitch. Upon exposure to UV light in nonpolar solvents, these nanoparticles self-assembled to afford spherical aggregates, which disassembled rapidly when the UV stimulus was turned off. The sizes of these aggregates depended on the nanoparticle concentration, and their lifetimes could be controlled by adjusting the surface concentration of nitrospiropyran on the nanoparticles. The conformational flexibility of nitrospiropyran, which was altered by modifying the structure of the background ligand, had a profound impact on the self-assembly process. By coating the nanoparticles with a spiropyran lacking the nitro group, a conceptually different self-assembly system, relying on a reversible proton transfer, was realized. The resulting particles spontaneously (in the dark) assembled into aggregates that could be readily disassembled upon exposure to blue light.
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Affiliation(s)
- Pintu K Kundu
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot 76100, Israel.
| | - Sanjib Das
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot 76100, Israel.
| | - Johannes Ahrens
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot 76100, Israel.
| | - Rafal Klajn
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot 76100, Israel.
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37
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Zhang Q, Qu DH. Artificial Molecular Machine Immobilized Surfaces: A New Platform To Construct Functional Materials. Chemphyschem 2016; 17:1759-68. [DOI: 10.1002/cphc.201501048] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2016] [Indexed: 12/16/2022]
Affiliation(s)
- Qi Zhang
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals; East China University of Science and Technology; 130 Meilong Road Shanghai China
| | - Da-Hui Qu
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals; East China University of Science and Technology; 130 Meilong Road Shanghai China
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38
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Tanabe J, Taura D, Ousaka N, Yashima E. Remarkable acceleration of template-directed photodimerisation of 9-phenylethynylanthracene derivatives assisted by complementary salt bridge formation. Org Biomol Chem 2016; 14:10822-10832. [DOI: 10.1039/c6ob02087a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The photodimerisation of 9-phenylethynylanthracene-bound carboxylic acid monomers was remarkably accelerated in the presence of the complementary amidine dimer template.
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Affiliation(s)
- Junki Tanabe
- Department of Molecular Design and Engineering
- Graduate School of Engineering
- Nagoya University
- Nagoya 464-8603
- Japan
| | - Daisuke Taura
- Department of Molecular Design and Engineering
- Graduate School of Engineering
- Nagoya University
- Nagoya 464-8603
- Japan
| | - Naoki Ousaka
- Department of Molecular Design and Engineering
- Graduate School of Engineering
- Nagoya University
- Nagoya 464-8603
- Japan
| | - Eiji Yashima
- Department of Molecular Design and Engineering
- Graduate School of Engineering
- Nagoya University
- Nagoya 464-8603
- Japan
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39
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Schramm MP, Kanaura M, Ito K, Ide M, Iwasawa T. Introverted Phosphorus-Au Cavitands for Catalytic Use. European J Org Chem 2015. [DOI: 10.1002/ejoc.201501426] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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40
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Udayabhaskararao T, Kundu PK, Ahrens J, Klajn R. Reversible Photoisomerization of Spiropyran on the Surfaces of Au25 Nanoclusters. Chemphyschem 2015; 17:1805-9. [PMID: 26593975 DOI: 10.1002/cphc.201500897] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Indexed: 11/06/2022]
Abstract
Au25 nanoclusters functionalized with a spiropyran molecular switch are synthesized via a ligand-exchange reaction at low temperature. The resulting nanoclusters are characterized by optical and NMR spectroscopies as well as by mass spectrometry. Spiropyran bound to nanoclusters isomerizes in a reversible fashion when exposed to UV and visible light, and its properties are similar to those of free spiropyran molecules in solution. The reversible photoisomerization entails the modulation of fluorescence as well as the light-controlled self-assembly of nanoclusters.
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Affiliation(s)
- T Udayabhaskararao
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot, 76100, Israel
| | - Pintu K Kundu
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot, 76100, Israel
| | - Johannes Ahrens
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot, 76100, Israel
| | - Rafal Klajn
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot, 76100, Israel.
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41
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Raimondo C, Kenens B, Reinders F, Mayor M, Uji-i H, Samorì P. Au nanoparticle scaffolds modulating intermolecular interactions among the conjugated azobenzenes chemisorbed on curved surfaces: tuning the kinetics of cis-trans isomerisation. NANOSCALE 2015; 7:13836-9. [PMID: 26234482 DOI: 10.1039/c5nr03688g] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
π-π Intermolecular interactions among adjacent conjugated azobenzenes chemisorbed on (non-)flat Au surfaces can be tuned by varying the curvature of the Au nanoparticles. Here we show that such interactions rule the thermal cis-trans isomerization kinetics, towards a better control on the azobenzene bistability for its optimal integration as a responsive material.
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Affiliation(s)
- Corinna Raimondo
- ISIS & icFRC, University of Strasbourg & CNRS, 8 allée Gaspard Monge, 67000 Strasbourg, France.
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42
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Kundu PK, Samanta D, Leizrowice R, Margulis B, Zhao H, Börner M, Udayabhaskararao T, Manna D, Klajn R. Light-controlled self-assembly of non-photoresponsive nanoparticles. Nat Chem 2015. [DOI: 10.1038/nchem.2303] [Citation(s) in RCA: 369] [Impact Index Per Article: 41.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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43
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Maloney AJ, Dong C, Campbell AS, Dinu CZ. Emerging Enzyme-Based Technologies for Wastewater Treatment. ACTA ACUST UNITED AC 2015. [DOI: 10.1021/bk-2015-1192.ch005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
Affiliation(s)
- Andrew J. Maloney
- Department of Chemical Engineering, West Virginia University, 395 Evansdale Drive, Engineering Science Building, Room 445, Morgantown, West Virginia 26506
- Department of Civil and Environmental Engineering, Rice University, 6100 Main Street, Houston, Texas 77005
- Department of Biomedical Engineering, Carnegie Mellon University, 15B S 25th Street, Pittsburgh, Pennsylvania 15203
| | - Chenbo Dong
- Department of Chemical Engineering, West Virginia University, 395 Evansdale Drive, Engineering Science Building, Room 445, Morgantown, West Virginia 26506
- Department of Civil and Environmental Engineering, Rice University, 6100 Main Street, Houston, Texas 77005
- Department of Biomedical Engineering, Carnegie Mellon University, 15B S 25th Street, Pittsburgh, Pennsylvania 15203
| | - Alan S. Campbell
- Department of Chemical Engineering, West Virginia University, 395 Evansdale Drive, Engineering Science Building, Room 445, Morgantown, West Virginia 26506
- Department of Civil and Environmental Engineering, Rice University, 6100 Main Street, Houston, Texas 77005
- Department of Biomedical Engineering, Carnegie Mellon University, 15B S 25th Street, Pittsburgh, Pennsylvania 15203
| | - Cerasela Zoica Dinu
- Department of Chemical Engineering, West Virginia University, 395 Evansdale Drive, Engineering Science Building, Room 445, Morgantown, West Virginia 26506
- Department of Civil and Environmental Engineering, Rice University, 6100 Main Street, Houston, Texas 77005
- Department of Biomedical Engineering, Carnegie Mellon University, 15B S 25th Street, Pittsburgh, Pennsylvania 15203
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44
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Manna D, Udayabhaskararao T, Zhao H, Klajn R. Orthogonal Light-Induced Self-Assembly of Nanoparticles using Differently Substituted Azobenzenes. Angew Chem Int Ed Engl 2015; 54:12394-7. [DOI: 10.1002/anie.201502419] [Citation(s) in RCA: 115] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2015] [Indexed: 11/09/2022]
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45
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Manna D, Udayabhaskararao T, Zhao H, Klajn R. Orthogonal Light-Induced Self-Assembly of Nanoparticles using Differently Substituted Azobenzenes. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201502419] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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46
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della Sala F, Kay ER. Reversible Control of Nanoparticle Functionalization and Physicochemical Properties by Dynamic Covalent Exchange. ANGEWANDTE CHEMIE (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2015; 127:4261-4265. [PMID: 27346895 PMCID: PMC4902120 DOI: 10.1002/ange.201409602] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/01/2014] [Revised: 11/28/2014] [Indexed: 12/21/2022]
Abstract
Existing methods for the covalent functionalization of nanoparticles rely on kinetically controlled reactions, and largely lack the sophistication of the preeminent oligonucleotide-based noncovalent strategies. Here we report the application of dynamic covalent chemistry for the reversible modification of nanoparticle (NP) surface functionality, combining the benefits of non-biomolecular covalent chemistry with the favorable features of equilibrium processes. A homogeneous monolayer of nanoparticle-bound hydrazones can undergo quantitative dynamic covalent exchange. The pseudomolecular nature of the NP system allows for the in situ characterization of surface-bound species, and real-time tracking of the exchange reactions. Furthermore, dynamic covalent exchange offers a simple approach for reversibly switching-and subtly tuning-NP properties such as solvophilicity.
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Affiliation(s)
- Flavio della Sala
- EaStCHEM School of Chemistry, University of St Andrews, North Haugh, St Andrews KY16 9ST (UK)
| | - Euan R. Kay
- EaStCHEM School of Chemistry, University of St Andrews, North Haugh, St Andrews KY16 9ST (UK)
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47
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della Sala F, Kay ER. Reversible control of nanoparticle functionalization and physicochemical properties by dynamic covalent exchange. Angew Chem Int Ed Engl 2015; 54:4187-91. [PMID: 25973468 PMCID: PMC4409818 DOI: 10.1002/anie.201409602] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2014] [Accepted: 11/28/2014] [Indexed: 01/18/2023]
Abstract
Existing methods for the covalent functionalization of nanoparticles rely on kinetically controlled reactions, and largely lack the sophistication of the preeminent oligonucleotide-based noncovalent strategies. Here we report the application of dynamic covalent chemistry for the reversible modification of nanoparticle (NP) surface functionality, combining the benefits of non-biomolecular covalent chemistry with the favorable features of equilibrium processes. A homogeneous monolayer of nanoparticle-bound hydrazones can undergo quantitative dynamic covalent exchange. The pseudomolecular nature of the NP system allows for the in situ characterization of surface-bound species, and real-time tracking of the exchange reactions. Furthermore, dynamic covalent exchange offers a simple approach for reversibly switching—and subtly tuning—NP properties such as solvophilicity.
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Affiliation(s)
- Flavio della Sala
- EaStCHEM School of Chemistry, University of St Andrews
North HaughSt Andrews KY16 9ST (UK)
| | - Euan R Kay
- EaStCHEM School of Chemistry, University of St Andrews
North HaughSt Andrews KY16 9ST (UK)
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48
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Moldt T, Brete D, Przyrembel D, Das S, Goldman JR, Kundu PK, Gahl C, Klajn R, Weinelt M. Tailoring the properties of surface-immobilized azobenzenes by monolayer dilution and surface curvature. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:1048-57. [PMID: 25544061 DOI: 10.1021/la504291n] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Photoswitching in densely packed azobenzene self-assembled monolayers (SAMs) is strongly affected by steric constraints and excitonic coupling between neighboring chromophores. Therefore, control of the chromophore density is essential for enhancing and manipulating the photoisomerization yield. We systematically compare two methods to achieve this goal: First, we assemble monocomponent azobenzene-alkanethiolate SAMs on gold nanoparticles of varying size. Second, we form mixed SAMs of azobenzene-alkanethiolates and "dummy" alkanethiolates on planar substrates. Both methods lead to a gradual decrease of the chromophore density and enable efficient photoswitching with low-power light sources. X-ray spectroscopy reveals that coadsorption from solution yields mixtures with tunable composition. The orientation of the chromophores with respect to the surface normal changes from a tilted to an upright position with increasing azobenzene density. For both systems, optical spectroscopy reveals a pronounced excitonic shift that increases with the chromophore density. In spite of exciting the optical transition of the monomer, the main spectral change in mixed SAMs occurs in the excitonic band. In addition, the photoisomerization yield decreases only slightly by increasing the azobenzene-alkanethiolate density, and we observed photoswitching even with minor dilutions. Unlike in solution, azobenzene in the planar SAM can be switched back almost completely by optical excitation from the cis to the original trans state within a short time scale. These observations indicate cooperativity in the photoswitching process of mixed SAMs.
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Affiliation(s)
- Thomas Moldt
- Fachbereich Physik, Freie Universität Berlin , Arnimallee 14, 14195 Berlin, Germany
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49
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Chen D, Han X, Jin W, Zhang B. Metal nanoparticle catalyzed cyclobutane cleavage reaction. RSC Adv 2015. [DOI: 10.1039/c5ra21225a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The pyridine substituted cyclobutane cleavage reaction can be catalyzed directly by metallic silver/gold nanoparticles.
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Affiliation(s)
- Dengtai Chen
- Department of Chemistry
- Harbin Institute of Technology
- Harbin
- China
| | - Xijiang Han
- Department of Chemistry
- Harbin Institute of Technology
- Harbin
- China
| | - Wen Jin
- Department of Chemistry
- Harbin Institute of Technology
- Harbin
- China
| | - Bin Zhang
- Department of Chemistry
- Harbin Institute of Technology
- Harbin
- China
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50
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Lee JW, Klajn R. Dual-responsive nanoparticles that aggregate under the simultaneous action of light and CO2. Chem Commun (Camb) 2015; 51:2036-9. [DOI: 10.1039/c4cc08541h] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Metallic nanoparticles co-functionalised with monolayers of UV- and CO2-sensitive ligands were prepared and shown to respond to these two types of stimuli reversibly and in an orthogonal fashion.
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Affiliation(s)
- Ji-Woong Lee
- Department of Organic Chemistry
- Weizmann Institute of Science
- 76100 Rehovot
- Israel
| | - Rafal Klajn
- Department of Organic Chemistry
- Weizmann Institute of Science
- 76100 Rehovot
- Israel
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