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Amit E, Mondal R, Berg I, Nairoukh Z, Gross E. N-Heterocyclic Carbene Monolayers on Metal-Oxide Films: Correlations between Adsorption Mode and Surface Functionality. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:10374-10383. [PMID: 38701356 PMCID: PMC11100006 DOI: 10.1021/acs.langmuir.4c01109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Revised: 04/15/2024] [Accepted: 04/19/2024] [Indexed: 05/05/2024]
Abstract
N-Heterocyclic carbene (NHC) ligands have been self-assembled on various metal and semimetal surfaces, creating a covalent bond with surface metal atoms that led to high thermal and chemical stability of the self-assembled monolayer. This study explores the self-assembly of NHCs on metal-oxide films (CuOx, FeOx, and TiOx) and reveals that the properties of these metal-oxide substrates play a pivotal role in dictating the adsorption behavior of NHCs, influencing the decomposition route of the monolayer and its impact on work function values. While the attachment of NHCs onto CuOx is via coordination with surface oxygen atoms, NHCs interact with TiOx through coordination with surface metal atoms and with FeOx via coordination with both metal and oxygen surface atoms. These distinct binding modes arise due to variances in the electronic properties of the metal atoms within the investigated metal-oxide films. Contact angle and ultraviolet photoelectron spectroscopy measurements have shown a significantly higher impact of F-NHC adsorption on CuOx than on TiOx and FeOx , correlated to a preferred, averaged upright orientation of F-NHC on CuOx.
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Affiliation(s)
- Einav Amit
- Institute
of Chemistry, The Hebrew University, Jerusalem 91904, Israel
- The
Center for Nanoscience and Nanotechnology, The Hebrew University, Jerusalem 91904, Israel
| | - Rajarshi Mondal
- Institute
of Chemistry, The Hebrew University, Jerusalem 91904, Israel
| | - Iris Berg
- Institute
of Chemistry, The Hebrew University, Jerusalem 91904, Israel
- The
Center for Nanoscience and Nanotechnology, The Hebrew University, Jerusalem 91904, Israel
| | - Zackaria Nairoukh
- Institute
of Chemistry, The Hebrew University, Jerusalem 91904, Israel
| | - Elad Gross
- Institute
of Chemistry, The Hebrew University, Jerusalem 91904, Israel
- The
Center for Nanoscience and Nanotechnology, The Hebrew University, Jerusalem 91904, Israel
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2
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Arabzadeh Nosratabad N, Jin Z, Arabzadeh H, Chen B, Huang C, Mattoussi H. Molar excess of coordinating N-heterocyclic carbene ligands triggers kinetic digestion of gold nanocrystals. Dalton Trans 2024; 53:467-483. [PMID: 38078852 DOI: 10.1039/d3dt02961a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2024]
Abstract
There has been much interest in evaluating the strength of the coordination interactions between N-heterocyclic carbene (NHC) molecules and transition metal ions, nanocolloids and surfaces. We implement a top-down core digestion test of Au nanoparticles (AuNPs) triggered by incubation with a large molar excess of poly(ethylene glycol)-appended NHC molecules, where kinetic dislodging of surface atoms and formation of NHC-Au complexes progressively take place. We characterize the structure and chemical nature of the generated PEG-NHC-Au complexes using 1D and 2D 1H-13C NMR spectroscopy, supplemented with matrix assisted laser desorption/ionization mass spectrometry, and transmission electron microscopy. We further apply the same test using thiol-modified molecules and find that though etching can be measured the kinetics are substantially slower. We discuss our findings within the classic digestion of transition metal ores and colloids induced by interactions with sodium cyanide, which provides an insight into the strength of coordination between the strong σ-donating (soft Lewis base) NHC and Au surfaces (having a soft Lewis acid character), as compared to gold-to-gold covalent binding.
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Affiliation(s)
- Neda Arabzadeh Nosratabad
- Florida State University, Department of Chemistry and Biochemistry, 95 Chieftan Way, Tallahassee, FL 32306, USA.
| | - Zhicheng Jin
- Florida State University, Department of Chemistry and Biochemistry, 95 Chieftan Way, Tallahassee, FL 32306, USA.
| | - Hesam Arabzadeh
- Florida State University, Department of Chemistry and Biochemistry, 95 Chieftan Way, Tallahassee, FL 32306, USA.
| | - Banghao Chen
- Florida State University, Department of Chemistry and Biochemistry, 95 Chieftan Way, Tallahassee, FL 32306, USA.
| | - Cheng Huang
- Florida State University, Department of Scientific Computing, Tallahassee, FL 32306, USA
| | - Hedi Mattoussi
- Florida State University, Department of Chemistry and Biochemistry, 95 Chieftan Way, Tallahassee, FL 32306, USA.
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3
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Ikemoto S, Muratsugu S, Koitaya T, Tsuji Y, Das M, Yoshizawa K, Glorius F, Tada M. Coordination-Induced Trigger for Activity: N-Heterocyclic Carbene-Decorated Ceria Catalysts Incorporating Cr and Rh with Activity Induction by Surface Adsorption Site Control. J Am Chem Soc 2023; 145:1497-1504. [PMID: 36511728 DOI: 10.1021/jacs.2c07290] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A coordination-induced trigger for catalytic activity is proposed on an N-heterocyclic carbene (NHC)-decorated ceria catalyst incorporating Cr and Rh (ICy-r-Cr0.19Rh0.06CeOz). ICy-r-Cr0.19Rh0.06CeOz was prepared by grafting 1,3-dicyclohexylimidazol-2-ylidene (ICy) onto H2-reduced Cr0.19Rh0.06CeOz (r-Cr0.19Rh0.06CeOz) surfaces, which went on to exhibit substantial catalytic activity for the 1,4-arylation of cyclohexenone with phenylboronic acid, whereas r-Cr0.19Rh0.06CeOz without ICy was inactive. FT-IR, Rh K-edge XAFS, XPS, and photoluminescence spectroscopy showed that the ICy carbene-coordinated Rh nanoclusters were the key active species. The coordination-induced trigger for catalytic activity on the ICy-bearing Rh nanoclusters could not be attributed to electronic donation from ICy to the Rh nanoclusters. DFT calculations suggested that ICy controlled the adsorption sites of the phenyl group on the Rh nanocluster to promote the C-C bond formation of the phenyl group and cyclohexenone.
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Affiliation(s)
- Satoru Ikemoto
- Department of Chemistry, Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan
| | - Satoshi Muratsugu
- Department of Chemistry, Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan
| | - Takanori Koitaya
- Department of Materials Molecular Science, Institute for Molecular Science, Myodaiji-cho, Okazaki, Aichi 444-8585, Japan
| | - Yuta Tsuji
- Institute for Materials Chemistry and Engineering and International Research Center for Molecular Systems, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.,Faculty of Engineering Sciences, Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka 816-8580, Japan
| | - Mowpriya Das
- Westfälische Wilhelms-Universität Münster, Organisch-Chemisches Institut, Corrensstrasse 40, 48149 Münster, Germany
| | - Kazunari Yoshizawa
- Institute for Materials Chemistry and Engineering and International Research Center for Molecular Systems, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Frank Glorius
- Westfälische Wilhelms-Universität Münster, Organisch-Chemisches Institut, Corrensstrasse 40, 48149 Münster, Germany
| | - Mizuki Tada
- Department of Chemistry, Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan.,Research Center for Materials Science (RCMS), Integrated Research Consortium on Chemical Sciences (IRCCS), and Institute for Advanced Study, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan
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4
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Liu T, Bai S, Zhang L, Hahn FE, Han YF. N-heterocyclic carbene-stabilized metal nanoparticles within porous organic cages for catalytic application. Natl Sci Rev 2022; 9:nwac067. [PMID: 35673537 PMCID: PMC9166563 DOI: 10.1093/nsr/nwac067] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 03/17/2022] [Accepted: 03/17/2022] [Indexed: 11/30/2022] Open
Abstract
Tuning the surface-embellishing ligands of metal nanoparticles (NPs) is a powerful strategy to modulate their morphology and surface electronic and functional features, impacting their catalytic activity and selectivity. In this work, we report the design and synthesis of a polytriazolium organic cage PIC-T, capable of stabilizing PdNPs within its discrete cavity. The obtained material (denoted Pd@PCC-T) is highly durable and monodispersed with narrow particle-size distribution of 2.06 ± 0.02 nm, exhibiting excellent catalytic performance and recyclability in the Sonogashira coupling and tandem reaction to synthesize benzofuran derivatives. Further investigation indicates that the modulation of N-heterocyclic carbene sites embedded in the organic cage has an impact on NPs' catalytic efficiency, thus providing a novel methodology to design superior NP catalysts.
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Affiliation(s)
- Tong Liu
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Xi'an Key Laboratory of Functional Supramolecular Structure and Materials, College of Chemistry and Materials Science, Northwest University, Xi’an 710127, China
| | - Sha Bai
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Xi'an Key Laboratory of Functional Supramolecular Structure and Materials, College of Chemistry and Materials Science, Northwest University, Xi’an 710127, China
| | - Le Zhang
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Xi'an Key Laboratory of Functional Supramolecular Structure and Materials, College of Chemistry and Materials Science, Northwest University, Xi’an 710127, China
| | - F Ekkehardt Hahn
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Xi'an Key Laboratory of Functional Supramolecular Structure and Materials, College of Chemistry and Materials Science, Northwest University, Xi’an 710127, China
- Institut für Anorganicshe und Analytische Chemie, Westfälische Wilhelms-Universität Münster, Münster 48149, Germany
| | - Ying-Feng Han
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Xi'an Key Laboratory of Functional Supramolecular Structure and Materials, College of Chemistry and Materials Science, Northwest University, Xi’an 710127, China
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6
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Upconversion nanoparticles/carbon dots (UCNPs@CDs) composite for simultaneous detection and speciation of divalent and trivalent iron ions. Anal Chim Acta 2021; 1183:338973. [PMID: 34627508 DOI: 10.1016/j.aca.2021.338973] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 08/11/2021] [Accepted: 08/19/2021] [Indexed: 01/18/2023]
Abstract
In this study, the application of carbon dots (CDs) modified NaYF4:Yb, Er nanoparticles (UCNPs@CDs) as the fluorescent nanoprobe for simultaneous detection of Fe2+ and Fe3+ was investigated. Fe3+ quantification (5-80 μmol L-1) was achieved, as a result of Fe3+ induced fluorescence quenching of UCNPs@CDs at 434 nm (under the 336 nm excitation). The chelate (Fe2+-phen) formed by Fe2+ and 1,10-phenanthroline had a broad absorption centered at 510 nm, due to inner filter effect (IFE), Fe2+ quantification (4-120 μmol L-1) was achieved as a result of (Fe2+-phen) induced fluorescence quenching of UCNPs@CDs at 545 nm (under the 980 nm excitation). The resultant UCNPs@CDs probe, with excellent anti-interference capability, favorable fluorescence stability, and convincing performance in real sample analysis, showed promising application in simultaneous detection of Fe2+ and Fe3+.
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7
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Mousavi SM, Hashemi SA, Mazraedoost S, Yousefi K, Gholami A, Behbudi G, Ramakrishna S, Omidifar N, Alizadeh A, Chiang WH. Multifunctional Gold Nanorod for Therapeutic Applications and Pharmaceutical Delivery Considering Cellular Metabolic Responses, Oxidative Stress and Cellular Longevity. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:1868. [PMID: 34361251 PMCID: PMC8308363 DOI: 10.3390/nano11071868] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/06/2021] [Revised: 07/02/2021] [Accepted: 07/03/2021] [Indexed: 11/16/2022]
Abstract
Multifunctional gold nanorods (GNR) have drawn growing interest in biomedical fields because of their excellent biocompatibility, ease of alteration, and special optical properties. The great advantage of using GNR in medicine is their application to Photothermal therapy (PPTT), which is possible thanks to their ability to turn luminous energy into heat to cause cellular hyperthermia. For this purpose, the relevant articles between 1988 and 2020 were searched in databases such as John Wiley, Free paper, Scopus, Science Direct, and Springer to obtain the latest findings on multifunctional gold nanorods for therapeutic applications and pharmaceutical delivery. In this article, we review recent progress in diagnostic and therapeutic applications of multifunctional GNR, highlighting new information about their toxicity to various cellular categories, oxidative stress, cellular longevity, and their metabolic effects, such as the effect on the energy cycles and genetic structures. The methods for the synthesis and functionalization of GNR were surveyed. This review includes new information about GNR toxicity to various cellular categories and their metabolic effects.
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Affiliation(s)
- Seyyed Mojtaba Mousavi
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 10617, Taiwan;
| | - Seyyed Alireza Hashemi
- Nanomaterials and Polymer Nanocomposites Laboratory, School of Engineering, University of British Columbia, Kelowna, BC V1V 1V7, Canada;
| | - Sargol Mazraedoost
- Biotechnology Research Center, Shiraz University of Medical Sciences, Shiraz 71345-1583, Iran; (S.M.); (K.Y.); (N.O.)
| | - Khadije Yousefi
- Biotechnology Research Center, Shiraz University of Medical Sciences, Shiraz 71345-1583, Iran; (S.M.); (K.Y.); (N.O.)
| | - Ahmad Gholami
- Biotechnology Research Center, Shiraz University of Medical Sciences, Shiraz 71345-1583, Iran; (S.M.); (K.Y.); (N.O.)
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz 71345-1583, Iran
| | - Gity Behbudi
- Department of Chemical Engineering, University of Mohaghegh Ardabili, Ardabil 56199-11367, Iran;
| | - Seeram Ramakrishna
- Department of Mechanical Engineering, Center for Nanofibers and Nanotechnology, National University of Singapore, Singapore 117581, Singapore;
| | - Navid Omidifar
- Biotechnology Research Center, Shiraz University of Medical Sciences, Shiraz 71345-1583, Iran; (S.M.); (K.Y.); (N.O.)
- Department of Pathology, School of Medicine, Shiraz University of Medical Sciences, Shiraz 71345-1583, Iran
| | - Ali Alizadeh
- Nanobiology and Nanomedicine Research Center, Shiraz University of Medical Sciences, Shiraz 71345-1583, Iran;
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz 71345-1583, Iran
| | - Wei-Hung Chiang
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 10617, Taiwan;
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8
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9
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Yue C, Xing Q, Sun P, Zhao Z, Lv H, Li F. Enhancing stability by trapping palladium inside N-heterocyclic carbene-functionalized hypercrosslinked polymers for heterogeneous C-C bond formations. Nat Commun 2021; 12:1875. [PMID: 33767184 PMCID: PMC7994585 DOI: 10.1038/s41467-021-22084-5] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Accepted: 02/18/2021] [Indexed: 11/20/2022] Open
Abstract
Catalyst deactivation caused by the aggregation of active metal species in the reaction process poses great challenges for practical applications of supported metal catalysts in solid-liquid catalysis. Herein, we develop a hypercrosslinked polymer integrated with N-heterocyclic carbene (NHC) as bifunctional support to stabilize palladium in heterogeneous C-C bond formations. This polymer supported palladium catalyst exhibits excellent stability in the one-pot fluorocarbonylation of indoles to four kinds of valuable indole-derived carbonyl compounds in cascade or sequential manner, as well as the representative Suzuki-Miyaura coupling reaction. Investigations on stabilizing effect disclose that this catalyst displays a molecular fence effect in which the coordination of NHC sites and confinement of polymer skeleton contribute together to stabilize the active palladium species in the reaction process. This work provides new insight into the development of supported metal catalysts with high stability and will also boost their efficient applications in advanced synthesis. Catalyst deactivation caused by the aggregation of active metal species poses great challenges for supported metal catalyzed solid-liquid reactions. Here, the authors develop a hypercrosslinked polymer integrated with N-heterocyclic carbene (NHC) as bifunctional support to stabilize palladium in heterogeneous C-C bond formations.
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Affiliation(s)
- Chengtao Yue
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Qi Xing
- BayRay Innovation Center, Shenzhen Bay Laboratory, Shenzhen, China
| | - Peng Sun
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou, China
| | - Zelun Zhao
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou, China
| | - Hui Lv
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou, China
| | - Fuwei Li
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou, China.
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10
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Du L, Nosratabad NA, Jin Z, Zhang C, Wang S, Chen B, Mattoussi H. Luminescent Quantum Dots Stabilized by N-Heterocyclic Carbene Polymer Ligands. J Am Chem Soc 2021; 143:1873-1884. [PMID: 33448803 DOI: 10.1021/jacs.0c10592] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
We have tested the ability of N-heterocyclic carbene (NHC)-modified ligands to coordinate and stabilize luminescent CdSe-ZnS core-shell quantum dot (QD) dispersions in hydrophilic media. In particular, we probed the effects of ligand structure and coordination number on the coating affinity to the nanocrystals. We find that such NHC-based ligands rapidly coordinate onto the QDs (requiring ∼5-10 min of reaction time), which reflects the soft Lewis base nature of the NHC groups, with its two electrons sharing capacity. Removal of the hydrophobic cap and promotion of carbene-driven coordination on the nanocrystals have been verified by 1H NMR spectroscopy, while 13C NMR was used to identify the formation of carbene-Zn complexes. The newly coated QD dispersions exhibit great long-term colloidal stability over a wide range of conditions. Additionally, we find that coordination onto the QD surfaces affects the optical and spectroscopic properties of the nanocrystals. These include a size-dependent red-shift of the absorption and fluorescence spectra and a pronounced increase in the measured fluorescence intensity when the samples are stored under white light exposure compared to those stored in the dark.
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Affiliation(s)
- Liang Du
- Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, Florida 32306, United States
| | - Neda Arabzadeh Nosratabad
- Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, Florida 32306, United States
| | - Zhicheng Jin
- Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, Florida 32306, United States
| | - Chengqi Zhang
- Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, Florida 32306, United States
| | - Sisi Wang
- Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, Florida 32306, United States
| | - Banghao Chen
- Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, Florida 32306, United States
| | - Hedi Mattoussi
- Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, Florida 32306, United States
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11
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The synthesis of new PEPPSI-type N-heterocyclic carbene (NHC)-Pd(II) complexes bearing long alkyl chain as precursors for the synthesis of NHC-stabilized Pd(0) nanoparticles and their catalytic applications. J Organomet Chem 2021. [DOI: 10.1016/j.jorganchem.2020.121633] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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12
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Kim H, Kim M, Song H, Lee E. Indol‐2‐ylidene (IdY): Ambiphilic N‐Heterocyclic Carbene Derived from Indole**. Chemistry 2021; 27:3849-3854. [DOI: 10.1002/chem.202004879] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2020] [Indexed: 12/25/2022]
Affiliation(s)
- Hyunho Kim
- Department of Chemistry Pohang University of Science and Technology Pohang 790-784 Republic of Korea
| | - Minseop Kim
- Department of Chemistry Pohang University of Science and Technology Pohang 790-784 Republic of Korea
| | - Hayoung Song
- Department of Chemistry Pohang University of Science and Technology Pohang 790-784 Republic of Korea
| | - Eunsung Lee
- Department of Chemistry Pohang University of Science and Technology Pohang 790-784 Republic of Korea
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Brill AR, Kuntumalla MK, de Ruiter G, Koren E. Formation of Highly Ordered Self-Assembled Monolayers on Two-Dimensional Materials via Noncovalent Functionalization. ACS APPLIED MATERIALS & INTERFACES 2020; 12:33941-33949. [PMID: 32589020 DOI: 10.1021/acsami.0c09722] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Functionalized two-dimensional materials (2DMs) are attracting much attention due to their promising applications in nanoscale devices. Producing continuous and homogeneous surface assemblies with a high degree of order has been challenging. In this work, we demonstrate that by noncovalently self-assembling molecular platforms on 2DMs, high-quality and highly ordered monolayers can be generated. The high degree of order and uniformity of the self-assembled monolayer layers were confirmed by a variety of analytic techniques including time-of-flight secondary ion mass spectrometry, scanning tunnelling microscopy, X-ray photoelectron spectroscopy, and atomic force microscopy. Furthermore, by selectively enhancing the molecular vibrations of the molecular platform, via a combination of graphene-enhanced Raman spectroscopy (GERS) and surface-enhanced Raman spectroscopy (SERS), we were able to determine the orientation of self-assembled molecular platforms with respect to the surface normal. The selective enhancement of the vibrational modes occurs by taking advantage of the distance dependence of the Raman enhancement either by the graphene surface (GERS) or the silver nanoparticules (SERS) that are located on top of the self-assembled monolayer.
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Affiliation(s)
- Adam R Brill
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology, Technion City, Haifa 3200008, Israel
- Faculty of Materials Science and Engineering, Israel Institute of Technology, Technion City, Haifa 3200008, Israel
| | - Mohan Kumar Kuntumalla
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology, Technion City, Haifa 3200008, Israel
| | - Graham de Ruiter
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology, Technion City, Haifa 3200008, Israel
| | - Elad Koren
- Faculty of Materials Science and Engineering, Israel Institute of Technology, Technion City, Haifa 3200008, Israel
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14
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Nguyen DT, Freitag M, Gutheil C, Sotthewes K, Tyler BJ, Böckmann M, Das M, Schlüter F, Doltsinis NL, Arlinghaus HF, Ravoo BJ, Glorius F. Ein auf Arylazopyrazol basierendes N‐heterocyclisches Carben als Photoschalter auf Goldoberflächen: Lichtschaltbare Benetzbarkeit, Austrittsarbeit und Leitwert. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202003523] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- D. Thao Nguyen
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Deutschland
- Center for Soft Nanoscience (SoN) Westfälische Wilhelms-Universität Münster Busso-Peus-Straße 10 48149 Münster Deutschland
| | - Matthias Freitag
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Deutschland
| | - Christian Gutheil
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Deutschland
| | - Kai Sotthewes
- Physics of Interfaces and Nanomaterials MESA+ Institute for Nanotechnology University of Twente P.O. Box 217 7500 AE Enschede Niederlande
| | - Bonnie J. Tyler
- Physikalisches Institut Westfälische Wilhelms-Universität Münster Wilhelm-Klemm-Straße 10 48149 Münster Deutschland
| | - Marcus Böckmann
- Institute for Solid State Theory and Center for Multiscale Theory & Computation Westfälische Wilhelms-Universität Münster Wilhelm-Klemm-Straße 10 48149 Münster Deutschland
| | - Mowpriya Das
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Deutschland
| | - Friederike Schlüter
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Deutschland
- Center for Soft Nanoscience (SoN) Westfälische Wilhelms-Universität Münster Busso-Peus-Straße 10 48149 Münster Deutschland
| | - Nikos L. Doltsinis
- Institute for Solid State Theory and Center for Multiscale Theory & Computation Westfälische Wilhelms-Universität Münster Wilhelm-Klemm-Straße 10 48149 Münster Deutschland
| | - Heinrich F. Arlinghaus
- Physikalisches Institut Westfälische Wilhelms-Universität Münster Wilhelm-Klemm-Straße 10 48149 Münster Deutschland
| | - Bart Jan Ravoo
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Deutschland
- Center for Soft Nanoscience (SoN) Westfälische Wilhelms-Universität Münster Busso-Peus-Straße 10 48149 Münster Deutschland
| | - Frank Glorius
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Deutschland
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15
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Nguyen DT, Freitag M, Gutheil C, Sotthewes K, Tyler BJ, Böckmann M, Das M, Schlüter F, Doltsinis NL, Arlinghaus HF, Ravoo BJ, Glorius F. An Arylazopyrazole-Based N-Heterocyclic Carbene as a Photoswitch on Gold Surfaces: Light-Switchable Wettability, Work Function, and Conductance. Angew Chem Int Ed Engl 2020; 59:13651-13656. [PMID: 32271973 DOI: 10.1002/anie.202003523] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2020] [Revised: 04/08/2020] [Indexed: 12/13/2022]
Abstract
A novel photoresponsive and fully conjugated N-heterocyclic carbene (NHC) has been synthesized that combines the excellent photophysical properties of arylazopyrazoles (AAPs) with an NHC that acts as a robust surface anchor (AAP-BIMe). The formation of self-assembled monolayers (SAMs) on gold was proven by ToF-SIMS and XPS, and the organic film displayed a very high stability at elevated temperatures. This stability was also reflected in a high desorption energy, which was determined by temperature-programmed SIMS measurements. E-/Z-AAP-BIMe@Au photoisomerization resulted in reversible alterations of the surface energy (i.e. wettability), the surface potential (i.e. work function), and the conductance (i.e. resistance). The effects could be explained by the difference in the dipole moment of the isomers. Furthermore, sequential application of a dummy ligand by microcontact printing and subsequent backfilling with AAP-BIMe allowed its patterning on gold. To the best of our knowledge, this is the first example of a photoswitchable NHC on a gold surface. These properties of AAP-BIMe@Au illustrate its suitability as a molecular switch for electronic devices.
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Affiliation(s)
- D Thao Nguyen
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstrasse 40, 48149, Münster, Germany.,Center for Soft Nanoscience (SoN), Westfälische Wilhelms-Universität Münster, Busso-Peus-Strasse 10, 48149, Münster, Germany
| | - Matthias Freitag
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstrasse 40, 48149, Münster, Germany
| | - Christian Gutheil
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstrasse 40, 48149, Münster, Germany
| | - Kai Sotthewes
- Physics of Interfaces and Nanomaterials, MESA+ Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500, AE, Enschede, The Netherlands
| | - Bonnie J Tyler
- Physikalisches Institut, Westfälische Wilhelms-Universität Münster, Wilhelm-Klemm-Strasse 10, 48149, Münster, Germany
| | - Marcus Böckmann
- Institute for Solid State Theory and Center for Multiscale Theory & Computation, Westfälische Wilhelms-Universität Münster, Wilhelm-Klemm-Strasse 10, 48149, Münster, Germany
| | - Mowpriya Das
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstrasse 40, 48149, Münster, Germany
| | - Friederike Schlüter
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstrasse 40, 48149, Münster, Germany.,Center for Soft Nanoscience (SoN), Westfälische Wilhelms-Universität Münster, Busso-Peus-Strasse 10, 48149, Münster, Germany
| | - Nikos L Doltsinis
- Institute for Solid State Theory and Center for Multiscale Theory & Computation, Westfälische Wilhelms-Universität Münster, Wilhelm-Klemm-Strasse 10, 48149, Münster, Germany
| | - Heinrich F Arlinghaus
- Physikalisches Institut, Westfälische Wilhelms-Universität Münster, Wilhelm-Klemm-Strasse 10, 48149, Münster, Germany
| | - Bart Jan Ravoo
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstrasse 40, 48149, Münster, Germany.,Center for Soft Nanoscience (SoN), Westfälische Wilhelms-Universität Münster, Busso-Peus-Strasse 10, 48149, Münster, Germany
| | - Frank Glorius
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstrasse 40, 48149, Münster, Germany
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16
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Westmoreland DE, López-Arteaga R, Weiss EA. N-Heterocyclic Carbenes as Reversible Exciton-Delocalizing Ligands for Photoluminescent Quantum Dots. J Am Chem Soc 2020; 142:2690-2696. [PMID: 31934758 DOI: 10.1021/jacs.9b13605] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Delocalization of excitons within semiconductor quantum dots (QDs) into states at the interface of the inorganic core and organic ligand shell by so-called "exciton-delocalizing ligands (EDLs)" is a promising strategy to enhance coupling of QD excitons with proximate molecules, ions, or other QDs. EDLs thereby enable enhanced rates of charge carrier extraction from, and transport among, QDs and dynamic colorimetric sensing. The application of reported EDLs-which bind to the QDs through thiolates or dithiocarbamates-is however limited by the irreversibility of their binding and their low oxidation potentials, which lead to a high yield of photoluminescence-quenching hole trapping on the EDL. This article describes a new class of EDLs for QDs, 1,3-dimethyl-4,5-disubstituted imidazolylidene N-heterocyclic carbenes (NHCs), where the 4,5-substituents are Me, H, or Cl. Postsynthetic ligand exchange of native oleate capping ligands for NHCs results in a bathochromic shift of the optical band gap of CdSe QDs (R = 1.17 nm) of up to 111 meV while the colloidal stability of the QDs is maintained. This shift is reversible for the MeNHC-capped and HNHC-capped QDs upon protonation of the NHC. The magnitude of exciton delocalization induced by the NHC (after scaling for surface coverage) increases with the increasing acidity of its π system, which depends on the substituent in the 4,5-positions of the imidazolylidene. The NHC-capped QDs maintain photoluminescence quantum yields of up to 4.2 ± 1.8% for shifts of the optical band gap as large as 106 meV.
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Affiliation(s)
- Dana E Westmoreland
- Department of Chemistry , Northwestern University , 2145 Sheridan Road , Evanston , Illinois 60208-3113 , United States
| | - Rafael López-Arteaga
- Department of Chemistry , Northwestern University , 2145 Sheridan Road , Evanston , Illinois 60208-3113 , United States
| | - Emily A Weiss
- Department of Chemistry , Northwestern University , 2145 Sheridan Road , Evanston , Illinois 60208-3113 , United States
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17
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Liu C, Ewert KK, Yao W, Wang N, Li Y, Safinya CR, Qiao W. A Multifunctional Lipid Incorporating Active Targeting and Dual-Control Release Capabilities for Precision Drug Delivery. ACS APPLIED MATERIALS & INTERFACES 2020; 12:70-85. [PMID: 31774266 DOI: 10.1021/acsami.9b14470] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Active targeting and precise control of drug release based on nanoparticle therapies are urgently required to precisely treat cancer. We have custom-synthesized a functional lipid (termed Fa-ONB) by introducing a folic acid-targeting group into an o-nitro-benzyl ester lipid. As designed, the liposomes formed by Fa-ONB combine active targeting and dual trigger release capabilities, which help to improve drug efficacy and reduce the toxicity of traditional liposomes. We first verified that both pH-induced hydrolysis and light treatment were able to cleave the Fa-ONB lipid. We then prepared a series of liposomes (termed FOBD liposomes) by compounding the Fa-ONB lipid with DOPC at different ratios. After encapsulation of doxorubicin (DOX), we found that the particle size of DOX-loaded FOBD liposomes (DOX/FOBD) first increased (290 to 700 nm) and then decreased again (to 400 nm) under continuous UV irradiation (120 min). The photocatalytic release efficiency under different pH conditions was investigated by dialysis experiments, and it was found that the release efficiency in an acidic environment was significantly increased relative to neutral pH. This pH-triggered release response helps distinguish pathological tissues such as lysosomal compartments and tumors. The light-induced formation of a DOX precipitate increases in efficiency with increasing UV exposure time as well as with increasing environmental acidity or alkalinity. In addition, confocal imaging and flow cytometry showed that the ability of FOBD lipids to actively target HeLa cells increased with increasing Fa-ONB lipid content. Real-time in vivo fluorescence small animal experiments proved targeting to tumors and pH- and photo-induced release properties. Furthermore, therapeutic experiments using a mouse model found a significant tumor inhibitory effect for DOX/FOBD55 liposomes with UV irradiation, clearly demonstrating the benefit of light treatment: the tumor size of the control (PBS) group was 7.59 times that of the light treatment group. Therefore, this research demonstrates the benefits of combining triggerable release functions and effective active tumor targeting in one small lipid molecule for precise cancer treatment.
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Affiliation(s)
- Chenyu Liu
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering , Dalian University of Technology , Dalian 116024 , P. R. China
| | | | - Weihe Yao
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering , Dalian University of Technology , Dalian 116024 , P. R. China
| | - Ning Wang
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering , Dalian University of Technology , Dalian 116024 , P. R. China
| | | | | | - Weihong Qiao
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering , Dalian University of Technology , Dalian 116024 , P. R. China
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18
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Dery S, Kim S, Tomaschun G, Haddad D, Cossaro A, Verdini A, Floreano L, Klüner T, Toste FD, Gross E. Flexible NO 2 -Functionalized N-Heterocyclic Carbene Monolayers on Au (111) Surface. Chemistry 2019; 25:15067-15072. [PMID: 31394002 DOI: 10.1002/chem.201903434] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2019] [Indexed: 12/26/2022]
Abstract
The formation of flexible self-assembled monolayers (SAMs) in which an external trigger modifies the geometry of surface-anchored molecules is essential for the development of functional materials with tunable properties. In this work, it is demonstrated that NO2 -functionalized N-heterocyclic carbene molecules (NHCs), which were anchored on Au (111) surface, change their orientation from tilted into flat-lying position following trigger-induced reduction of their nitro groups. DFT calculations identified that the energetic driving force for reorientation was the lower steric hindrance and stronger interactions between the chemically reduced NHCs and the Au surface. The trigger-induced changes in the NHCs' anchoring geometry and chemical functionality modified the work function and the hydrophobicity of the NHC-decorated Au surface, demonstrating the impact of a chemically tunable NHC-based SAM on the properties of the metal surface.
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Affiliation(s)
- Shahar Dery
- Institute of Chemistry and The Center for Nanoscience and Nanotechnology, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Suhong Kim
- Department of Chemistry, University of California, Berkeley, California, 94720, USA
| | - Gabriele Tomaschun
- Department of Chemistry, Carl von Ossietzky University Oldenburg, 26111, Oldenburg, Germany
| | - David Haddad
- Institute of Chemistry and The Center for Nanoscience and Nanotechnology, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Albano Cossaro
- CNR-IOM, Laboratorio Nazionale TASC, Basovizza SS-14, Trieste, 34012, Italy
| | - Alberto Verdini
- CNR-IOM, Laboratorio Nazionale TASC, Basovizza SS-14, Trieste, 34012, Italy
| | - Luca Floreano
- CNR-IOM, Laboratorio Nazionale TASC, Basovizza SS-14, Trieste, 34012, Italy
| | - Thorsten Klüner
- Department of Chemistry, Carl von Ossietzky University Oldenburg, 26111, Oldenburg, Germany
| | - F Dean Toste
- Department of Chemistry, University of California, Berkeley, California, 94720, USA
| | - Elad Gross
- Institute of Chemistry and The Center for Nanoscience and Nanotechnology, Hebrew University of Jerusalem, Jerusalem, Israel
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19
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A multifunctional lipid that forms contrast-agent liposomes with dual-control release capabilities for precise MRI-guided drug delivery. Biomaterials 2019; 221:119412. [PMID: 31419656 DOI: 10.1016/j.biomaterials.2019.119412] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 07/18/2019] [Accepted: 08/03/2019] [Indexed: 01/04/2023]
Abstract
Monitoring of nanoparticle-based therapy in vivo and controlled drug release are urgently needed for the precise treatment of disease. We have synthesized a multifunctional Gd-DTPA-ONB (GDO) lipid by introducing the Gd-DTPA contrast agent moiety into an o-nitro-benzyl ester lipid. By design, liposomes formed from the GDO lipid combine MRI tracking ability and dual-trigger release capabilities with maximum sensitivity (because all lipids bear the cleavable moiety) without reducing the drug encapsulation rate. We first confirmed that both photo-treatment and pH-triggered hydrolysis are able to cleave the GDO lipid and lyse GDO liposomes. We then investigated the efficiency of drug release via the combined release processes for GDO liposomes loaded with doxorubicin (DOX). Relative to neutral pH, the release efficiency in acidic environment increased by 10.4% (at pH = 6.5) and 13.3% (at pH = 4.2). This pH-dependent release response is conducive to distinguishing pathological tissue such as tumors and endolysosomal compartments. The photo-induced release efficiency increases with illumination time as well as with distance of the pH from neutral. Photolysis increased the release efficiency by 13.8% at pH = 4.2, which is remarkable considering the already increased amount of drug release in the acidic environment. In addition, the relaxation time of GDO liposomes was 4.1 times that of clinical Gd-DTPA, with brighter T1-weighted imaging in vitro and in vivo. Real-time MRI imaging and in vivo fluorescence experiments demonstrated tumor targeting and MRI guided release. Furthermore, significant tumor growth inhibition in a treatment experiment using DOX-loaded GDO liposomes clearly demonstrated the benefit of photo-treatment for efficacy: the tumor size in the photo-treatment group was 3.7 times smaller than in the control group. The present study thus highlights the benefit of the design idea of combining efficient imaging/guiding, targeting, and triggerable release functions in one lipid molecule for drug delivery applications.
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20
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N-heterocyclic carbene-functionalized magic-number gold nanoclusters. Nat Chem 2019; 11:419-425. [DOI: 10.1038/s41557-019-0246-5] [Citation(s) in RCA: 219] [Impact Index Per Article: 43.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Accepted: 02/28/2019] [Indexed: 12/24/2022]
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21
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Smith CA, Narouz MR, Lummis PA, Singh I, Nazemi A, Li CH, Crudden CM. N-Heterocyclic Carbenes in Materials Chemistry. Chem Rev 2019; 119:4986-5056. [PMID: 30938514 DOI: 10.1021/acs.chemrev.8b00514] [Citation(s) in RCA: 366] [Impact Index Per Article: 73.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
N-Heterocyclic carbenes (NHCs) have become one of the most widely studied class of ligands in molecular chemistry and have found applications in fields as varied as catalysis, the stabilization of reactive molecular fragments, and biochemistry. More recently, NHCs have found applications in materials chemistry and have allowed for the functionalization of surfaces, polymers, nanoparticles, and discrete, well-defined clusters. In this review, we provide an in-depth look at recent advances in the use of NHCs for the development of functional materials.
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Affiliation(s)
- Christene A Smith
- Department of Chemistry , Queen's University , 90 Bader Lane , Kingston , Ontario , Canada , K7L 3N6
| | - Mina R Narouz
- Department of Chemistry , Queen's University , 90 Bader Lane , Kingston , Ontario , Canada , K7L 3N6
| | - Paul A Lummis
- Department of Chemistry , Queen's University , 90 Bader Lane , Kingston , Ontario , Canada , K7L 3N6
| | - Ishwar Singh
- Department of Chemistry , Queen's University , 90 Bader Lane , Kingston , Ontario , Canada , K7L 3N6
| | - Ali Nazemi
- Department of Chemistry , Queen's University , 90 Bader Lane , Kingston , Ontario , Canada , K7L 3N6
| | - Chien-Hung Li
- Department of Chemistry , Queen's University , 90 Bader Lane , Kingston , Ontario , Canada , K7L 3N6
| | - Cathleen M Crudden
- Department of Chemistry , Queen's University , 90 Bader Lane , Kingston , Ontario , Canada , K7L 3N6.,Institute of Transformative Bio-Molecules, ITbM-WPI , Nagoya University , Nagoya , Chikusa 464-8601 , Japan
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22
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Tran BL, Fulton JL, Linehan JC, Balasubramanian M, Lercher JA, Bullock RM. Operando XAFS Studies on Rh(CAAC)-Catalyzed Arene Hydrogenation. ACS Catal 2019. [DOI: 10.1021/acscatal.8b04929] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Ba L. Tran
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - John L. Fulton
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - John C. Linehan
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | | | - Johannes A. Lercher
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - R. Morris Bullock
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
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23
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An Y, Yu J, Han Y. Recent Advances in the Chemistry of
N
‐Heterocyclic‐Carbene‐Functionalized Metal‐Nanoparticles and Their Applications. CHINESE J CHEM 2018. [DOI: 10.1002/cjoc.201800450] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Yuan‐Yuan An
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry, College of Chemistry and Materials Science, Northwest University Xi'an Shaanxi 710127 China
| | - Jian‐Gang Yu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry, College of Chemistry and Materials Science, Northwest University Xi'an Shaanxi 710127 China
- College of Chemical and Material Engineering, Quzhou University Quzhou, Zhejiang 324000 China
| | - Ying‐Feng Han
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry, College of Chemistry and Materials Science, Northwest University Xi'an Shaanxi 710127 China
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences Fuzhou Fujian 350002 China
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24
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Freitag M, Möller N, Rühling A, Strassert CA, Ravoo BJ, Glorius F. Photocatalysis in the Dark: Near-Infrared Light Driven Photoredox Catalysis by an Upconversion Nanoparticle/Photocatalyst System. CHEMPHOTOCHEM 2018. [DOI: 10.1002/cptc.201800212] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Matthias Freitag
- Organisch-Chemisches Institut and Center for Soft Nanoscience (SoN); Westfälische Wilhelms-Universität Münster; Corrensstraße 40 48149 Münster Germany
| | - Nadja Möller
- Organisch-Chemisches Institut and Center for Soft Nanoscience (SoN); Westfälische Wilhelms-Universität Münster; Corrensstraße 40 48149 Münster Germany
| | - Andreas Rühling
- Organisch-Chemisches Institut and Center for Soft Nanoscience (SoN); Westfälische Wilhelms-Universität Münster; Corrensstraße 40 48149 Münster Germany
| | - Cristian A. Strassert
- Institut für Anorganische und Analytische Chemie - CiMIC and CeNTech; Westfälische Wilhelms-Universität Münster; Corrensstraße 28/30 Münster 48149 Germany
| | - Bart Jan Ravoo
- Organisch-Chemisches Institut and Center for Soft Nanoscience (SoN); Westfälische Wilhelms-Universität Münster; Corrensstraße 40 48149 Münster Germany
| | - Frank Glorius
- Organisch-Chemisches Institut and Center for Soft Nanoscience (SoN); Westfälische Wilhelms-Universität Münster; Corrensstraße 40 48149 Münster Germany
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25
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Tegeder P, Freitag M, Chepiga KM, Muratsugu S, Möller N, Lamping S, Tada M, Glorius F, Ravoo BJ. N‐Heterocyclic Carbene‐Modified Au–Pd Alloy Nanoparticles and Their Application as Biomimetic and Heterogeneous Catalysts. Chemistry 2018; 24:18682-18688. [DOI: 10.1002/chem.201803274] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Indexed: 12/20/2022]
Affiliation(s)
- Patricia Tegeder
- Westfälische Universität MünsterOrganisch-Chemisches Institut Corrensstrasse 40 48149 Münster Germany
| | - Matthias Freitag
- Westfälische Universität MünsterOrganisch-Chemisches Institut Corrensstrasse 40 48149 Münster Germany
| | - Kathryn M. Chepiga
- Westfälische Universität MünsterOrganisch-Chemisches Institut Corrensstrasse 40 48149 Münster Germany
| | - Satoshi Muratsugu
- Nagoya UniversityDepartment of Chemistry, Graduate School of Science Furo-cho, Chikusa Nagoya Aichi 464-8602 Japan
| | - Nadja Möller
- Westfälische Universität MünsterOrganisch-Chemisches Institut Corrensstrasse 40 48149 Münster Germany
| | - Sebastian Lamping
- Westfälische Universität MünsterOrganisch-Chemisches Institut Corrensstrasse 40 48149 Münster Germany
| | - Mizuki Tada
- Nagoya UniversityDepartment of Chemistry, Graduate School of Science Furo-cho, Chikusa Nagoya Aichi 464-8602 Japan
- Research Center for Materials Science (RCMS) and Integrated Research, Consortium on Chemical Sciences (IRCCS)Nagoya University Furo-cho, Chikusa Nagoya Aichi 464-8602 Japan
| | - Frank Glorius
- Westfälische Universität MünsterOrganisch-Chemisches Institut Corrensstrasse 40 48149 Münster Germany
| | - Bart Jan Ravoo
- Westfälische Universität MünsterOrganisch-Chemisches Institut Corrensstrasse 40 48149 Münster Germany
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26
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Robust gold nanorods stabilized by bidentate N-heterocyclic-carbene-thiolate ligands. Nat Chem 2018; 11:57-63. [PMID: 30420777 DOI: 10.1038/s41557-018-0159-8] [Citation(s) in RCA: 90] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Accepted: 09/14/2018] [Indexed: 12/13/2022]
Abstract
Although N-heterocyclic carbenes (NHCs) have demonstrated outstanding potential for use as surface anchors, synthetic challenges have limited their application to either large planar substrates or very small spherical nanoparticles. The development of a strategy to graft NHCs onto non-spherical nanomaterials, such as gold nanorods, would greatly expand their utility as surface ligands. Here, we use a bidentate thiolate-NHC-gold(I) complex that is easily grafted onto commercial cetyl trimethylammonium bromide-stabilized gold nanorods through ligand exchange. On mild reduction of the resulting surface-tethered NHC-gold(I) complexes, the gold atom attached to the NHC complex is added to the surface as an adatom, thereby precluding the need for reorganization of the underlying surface lattice upon NHC binding. The resulting thiolate-NHC-stabilized gold nanorods are stable towards excess glutathione for up to six days, and under conditions with large variations in pH, high and low temperatures, high salt concentrations, or in biological media and cell culture. We also demonstrate the utility of these nanorods for in vitro photothermal therapy.
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27
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Nguyen DT, Freitag M, Körsgen M, Lamping S, Rühling A, Schäfer AH, Siekman MH, Arlinghaus HF, van der Wiel WG, Glorius F, Ravoo BJ. Versatile Micropatterns of N-Heterocyclic Carbenes on Gold Surfaces: Increased Thermal and Pattern Stability with Enhanced Conductivity. Angew Chem Int Ed Engl 2018; 57:11465-11469. [DOI: 10.1002/anie.201807197] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Revised: 06/22/2018] [Indexed: 11/07/2022]
Affiliation(s)
- D. Thao Nguyen
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität Münster; Corrensstrasse 40 48149 Münster Germany
| | - Matthias Freitag
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität Münster; Corrensstrasse 40 48149 Münster Germany
| | - Martin Körsgen
- Physikalisches Institut; Westfälische Wilhelms-Universität Münster; Wilhelm-Klemm-Strasse 10 48149 Münster Germany
| | - Sebastian Lamping
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität Münster; Corrensstrasse 40 48149 Münster Germany
| | - Andreas Rühling
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität Münster; Corrensstrasse 40 48149 Münster Germany
| | | | - Martin H. Siekman
- NanoElectronics Group; MESA Institute for Nanotechnology; University of Twente; P.O. Box 217 7500 AE Enschede The Netherlands
| | - Heinrich F. Arlinghaus
- Physikalisches Institut; Westfälische Wilhelms-Universität Münster; Wilhelm-Klemm-Strasse 10 48149 Münster Germany
| | - Wilfred G. van der Wiel
- NanoElectronics Group; MESA Institute for Nanotechnology; University of Twente; P.O. Box 217 7500 AE Enschede The Netherlands
| | - Frank Glorius
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität Münster; Corrensstrasse 40 48149 Münster Germany
| | - Bart Jan Ravoo
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität Münster; Corrensstrasse 40 48149 Münster Germany
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28
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Nguyen DT, Freitag M, Körsgen M, Lamping S, Rühling A, Schäfer AH, Siekman MH, Arlinghaus HF, van der Wiel WG, Glorius F, Ravoo BJ. Vielseitige Mikrostrukturen aus N-heterocyclischen Carbenen auf Goldoberflächen: Erhöhte thermische und Strukturstabilität mit erhöhter Leitfähigkeit. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201807197] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- D. Thao Nguyen
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität Münster; Corrensstraße 40 48149 Münster Deutschland
| | - Matthias Freitag
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität Münster; Corrensstraße 40 48149 Münster Deutschland
| | - Martin Körsgen
- Physikalisches Institut; Westfälische Wilhelms-Universität Münster; Wilhelm-Klemm-Straße 10 48149 Münster Deutschland
| | - Sebastian Lamping
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität Münster; Corrensstraße 40 48149 Münster Deutschland
| | - Andreas Rühling
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität Münster; Corrensstraße 40 48149 Münster Deutschland
| | | | - Martin H. Siekman
- NanoElectronics Group; MESA Institute for Nanotechnology; University of Twente; P.O. Box 217 7500 AE Enschede Niederlande
| | - Heinrich F. Arlinghaus
- Physikalisches Institut; Westfälische Wilhelms-Universität Münster; Wilhelm-Klemm-Straße 10 48149 Münster Deutschland
| | - Wilfred G. van der Wiel
- NanoElectronics Group; MESA Institute for Nanotechnology; University of Twente; P.O. Box 217 7500 AE Enschede Niederlande
| | - Frank Glorius
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität Münster; Corrensstraße 40 48149 Münster Deutschland
| | - Bart Jan Ravoo
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität Münster; Corrensstraße 40 48149 Münster Deutschland
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29
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Cao J, Tian H. N-Heterocyclic Carbene-Protected Ag Nanoparticles Immobilized on Polyacrylonitrile Fiber as Efficient Catalysts for a Three-Component Coupling Reaction. Chem Asian J 2018; 13:1561-1569. [DOI: 10.1002/asia.201800154] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 04/02/2018] [Indexed: 12/15/2022]
Affiliation(s)
- Jian Cao
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine; Chinese Academy of Medical Science and Peking Union Medical College; Tianjin 300192 China
| | - Hongqi Tian
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine; Chinese Academy of Medical Science and Peking Union Medical College; Tianjin 300192 China
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30
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Lv A, Freitag M, Chepiga KM, Schäfer AH, Glorius F, Chi L. N-Heterocyclic-Carbene-Treated Gold Surfaces in Pentacene Organic Field-Effect Transistors: Improved Stability and Contact at the Interface. Angew Chem Int Ed Engl 2018; 57:4792-4796. [PMID: 29453805 DOI: 10.1002/anie.201713415] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2017] [Revised: 02/05/2018] [Indexed: 01/01/2023]
Abstract
N-Heterocyclic carbenes (NHCs), which react with the surface of Au electrodes, have been successfully applied in pentacene transistors. With the application of NHCs, the charge-carrier mobility of pentacene transistors increased by five times, while the contact resistance at the pentacene-Au interface was reduced by 85 %. Even after annealing the NHC-Au electrodes at 200 °C for 2 h before pentacene deposition, the charge-carrier mobility of the pentacene transistors did not decrease. The distinguished performance makes NHCs as excellent alternatives to thiols as metal modifiers for the application in organic field-effect transistors (OFETs).
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Affiliation(s)
- Aifeng Lv
- Physikalisches Institut and Center for Nanotechnology (CeNTech), Universität Münster, Wilhelm-Klemm-Strasse 10, 48149, Münster, Germany.,Functional Nano & Soft Materials Laboratory (FUNSOM), Soochow University, Renai Rd. 199, Suzhou, 215123, China.,College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, 333 Longteng Road, Shanghai, 201620, China
| | - Matthias Freitag
- Organisch-Chemisches Institut, Universität Münster, Corrensstrasse 40, 48149, Münster, Germany
| | - Kathryn M Chepiga
- Organisch-Chemisches Institut, Universität Münster, Corrensstrasse 40, 48149, Münster, Germany
| | | | - Frank Glorius
- Organisch-Chemisches Institut, Universität Münster, Corrensstrasse 40, 48149, Münster, Germany
| | - Lifeng Chi
- Physikalisches Institut and Center for Nanotechnology (CeNTech), Universität Münster, Wilhelm-Klemm-Strasse 10, 48149, Münster, Germany.,Functional Nano & Soft Materials Laboratory (FUNSOM), Soochow University, Renai Rd. 199, Suzhou, 215123, China
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31
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Lv A, Freitag M, Chepiga KM, Schäfer AH, Glorius F, Chi L. Mit N‐heterocyclischen Carbenen behandelte Goldoberflächen in Pentacen‐Transistoren: Verbesserte Stabilität und Kontakt an der Grenzfläche. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201713415] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Aifeng Lv
- Physikalisches Institut und Center for Nanotechnology (CeNTech) Universität Münster Wilhelm-Klemm-Straße 10 48149 Münster Deutschland
- Functional Nano & Soft Materials Laboratory (FUNSOM) Soochow University Renai Rd. 199 Suzhou 215123 China
- College of Chemistry und Chemical Engineering Shanghai University of Engineering Science 333 Longteng Road Shanghai 201620 China
| | - Matthias Freitag
- Organisch-Chemisches Institut Universität Münster Corrensstraße 40 48149 Münster Deutschland
| | - Kathryn M. Chepiga
- Organisch-Chemisches Institut Universität Münster Corrensstraße 40 48149 Münster Deutschland
| | | | - Frank Glorius
- Organisch-Chemisches Institut Universität Münster Corrensstraße 40 48149 Münster Deutschland
| | - Lifeng Chi
- Physikalisches Institut und Center for Nanotechnology (CeNTech) Universität Münster Wilhelm-Klemm-Straße 10 48149 Münster Deutschland
- Functional Nano & Soft Materials Laboratory (FUNSOM) Soochow University Renai Rd. 199 Suzhou 215123 China
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32
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Klauke K, Gruber I, Knedel TO, Schmolke L, Barthel J, Breitzke H, Buntkowsky G, Janiak C. Silver, Gold, Palladium, and Platinum N-heterocyclic Carbene Complexes Containing a Selenoether-Functionalized Imidazol-2-ylidene Moiety. Organometallics 2018. [DOI: 10.1021/acs.organomet.7b00678] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Karsten Klauke
- Institut
für Anorganische Chemie und Strukturchemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstraße 1, D-40225 Düsseldorf, Germany
| | - Irina Gruber
- Institut
für Anorganische Chemie und Strukturchemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstraße 1, D-40225 Düsseldorf, Germany
| | - Tim-Oliver Knedel
- Institut
für Anorganische Chemie und Strukturchemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstraße 1, D-40225 Düsseldorf, Germany
| | - Laura Schmolke
- Institut
für Anorganische Chemie und Strukturchemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstraße 1, D-40225 Düsseldorf, Germany
| | - Juri Barthel
- Gemeinschaftslabor für Elektronenmikroskopie RWTH-Aachen, Ernst-Ruska-Centrum für Mikroskopie und Spektroskopie mit
Elektronen, D-52425 Jülich, Germany
| | - Hergen Breitzke
- Eduard-Zintl-Institut
für Anorganische und Physikalische Chemie, Technische Universität Darmstadt, Alarich-Weiss-Straße 4, D-64287 Darmstadt, Germany
| | - Gerd Buntkowsky
- Eduard-Zintl-Institut
für Anorganische und Physikalische Chemie, Technische Universität Darmstadt, Alarich-Weiss-Straße 4, D-64287 Darmstadt, Germany
| | - Christoph Janiak
- Institut
für Anorganische Chemie und Strukturchemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstraße 1, D-40225 Düsseldorf, Germany
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33
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Monzón DM, Santos T, Pinacho-Crisóstomo F, Martín VS, Carrillo R. Mild-Base-Promoted Arylation of (Hetero)Arenes with Anilines. Chem Asian J 2018; 13:325-333. [DOI: 10.1002/asia.201701585] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Revised: 12/19/2017] [Indexed: 01/14/2023]
Affiliation(s)
- Diego M. Monzón
- Departamento de Química Orgánica; Instituto Universitario de Bio-Orgánica “Antonio González” (IUBO); Universidad de La Laguna; Avda. Astrofísico Fco. Sánchez 2, Apdo. Correos 456 38200- La Laguna S/C. de Tenerife Spain
| | - Tanausú Santos
- Departamento de Química Orgánica; Instituto Universitario de Bio-Orgánica “Antonio González” (IUBO); Universidad de La Laguna; Avda. Astrofísico Fco. Sánchez 2, Apdo. Correos 456 38200- La Laguna S/C. de Tenerife Spain
| | - F. Pinacho-Crisóstomo
- Departamento de Química Orgánica; Instituto Universitario de Bio-Orgánica “Antonio González” (IUBO); Universidad de La Laguna; Avda. Astrofísico Fco. Sánchez 2, Apdo. Correos 456 38200- La Laguna S/C. de Tenerife Spain
| | - Víctor S. Martín
- Departamento de Química Orgánica; Instituto Universitario de Bio-Orgánica “Antonio González” (IUBO); Universidad de La Laguna; Avda. Astrofísico Fco. Sánchez 2, Apdo. Correos 456 38200- La Laguna S/C. de Tenerife Spain
| | - Romen Carrillo
- Departamento de Química Orgánica; Instituto Universitario de Bio-Orgánica “Antonio González” (IUBO); Universidad de La Laguna; Avda. Astrofísico Fco. Sánchez 2, Apdo. Correos 456 38200- La Laguna S/C. de Tenerife Spain
- Instituto de Productos Naturales y Agrobiología; Consejo Superior de Investigaciones Científicas (IPNA-CSIC); Avda. Astrofísico Fco. Sánchez 3 38206- La Laguna S/C. de Tenerife Spain
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34
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Baquero EA, Tricard S, Coppel Y, Flores JC, Chaudret B, de Jesús E. Water-soluble platinum nanoparticles stabilized by sulfonated N-heterocyclic carbenes: influence of the synthetic approach. Dalton Trans 2018; 47:4093-4104. [DOI: 10.1039/c8dt00240a] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
On the surface: Pt nanoparticles with NHC ligands at the surface have been prepared in water using different organometallic approaches.
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Affiliation(s)
- Edwin A. Baquero
- Departamento de Química Orgánica y Química Inorgánica
- Instituto de Investigación Química “Andrés M. del Río” (IQAR)
- Universidad de Alcalá
- Campus Universitario
- Madrid
| | - Simon Tricard
- Laboratoire de Physique et Chimie des Nano-Objets
- UMR5215 INSA-CNRS-UPS
- Institut des Sciences appliquées
- 31077 Toulouse
- France
| | - Yannick Coppel
- Laboratoire de Chimie de Coordination
- CNRS
- Université de Toulouse
- 31077 Toulouse
- France
| | - Juan C. Flores
- Departamento de Química Orgánica y Química Inorgánica
- Instituto de Investigación Química “Andrés M. del Río” (IQAR)
- Universidad de Alcalá
- Campus Universitario
- Madrid
| | - Bruno Chaudret
- Laboratoire de Physique et Chimie des Nano-Objets
- UMR5215 INSA-CNRS-UPS
- Institut des Sciences appliquées
- 31077 Toulouse
- France
| | - Ernesto de Jesús
- Departamento de Química Orgánica y Química Inorgánica
- Instituto de Investigación Química “Andrés M. del Río” (IQAR)
- Universidad de Alcalá
- Campus Universitario
- Madrid
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