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Düring J, Alex W, Zika A, Branscheid R, Spiecker E, Gröhn F. Dendrimer–Dye Assemblies as Templates for the Formation of Gold Nanostructures. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b00752] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jasmin Düring
- Department of Chemistry and Pharmacy and Interdisciplinary Center for Molecular Materials and ‡Institute of Micro- and Nanostructure Research & Center for Nanoanalysis and Electron Microscopy (CENEM), Friedrich-Alexander-University Erlangen-Nürnberg, 91058 Erlangen, Germany
| | - Wiebke Alex
- Department of Chemistry and Pharmacy and Interdisciplinary Center for Molecular Materials and ‡Institute of Micro- and Nanostructure Research & Center for Nanoanalysis and Electron Microscopy (CENEM), Friedrich-Alexander-University Erlangen-Nürnberg, 91058 Erlangen, Germany
| | - Alexander Zika
- Department of Chemistry and Pharmacy and Interdisciplinary Center for Molecular Materials and ‡Institute of Micro- and Nanostructure Research & Center for Nanoanalysis and Electron Microscopy (CENEM), Friedrich-Alexander-University Erlangen-Nürnberg, 91058 Erlangen, Germany
| | - Robert Branscheid
- Department of Chemistry and Pharmacy and Interdisciplinary Center for Molecular Materials and ‡Institute of Micro- and Nanostructure Research & Center for Nanoanalysis and Electron Microscopy (CENEM), Friedrich-Alexander-University Erlangen-Nürnberg, 91058 Erlangen, Germany
| | - Erdmann Spiecker
- Department of Chemistry and Pharmacy and Interdisciplinary Center for Molecular Materials and ‡Institute of Micro- and Nanostructure Research & Center for Nanoanalysis and Electron Microscopy (CENEM), Friedrich-Alexander-University Erlangen-Nürnberg, 91058 Erlangen, Germany
| | - Franziska Gröhn
- Department of Chemistry and Pharmacy and Interdisciplinary Center for Molecular Materials and ‡Institute of Micro- and Nanostructure Research & Center for Nanoanalysis and Electron Microscopy (CENEM), Friedrich-Alexander-University Erlangen-Nürnberg, 91058 Erlangen, Germany
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Shankar S, Orbach M, Kaminker R, Lahav M, van der Boom ME. Gold Nanoparticle Assemblies on Surfaces: Reactivity Tuning through Capping-Layer and Cross-Linker Design. Chemistry 2016; 22:1728-34. [PMID: 26743768 DOI: 10.1002/chem.201503297] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2015] [Indexed: 11/09/2022]
Affiliation(s)
- Sreejith Shankar
- Department of Organic Chemistry; Weizmann Institute of Science; Rehovot 7610001 Israel
| | - Meital Orbach
- Department of Organic Chemistry; Weizmann Institute of Science; Rehovot 7610001 Israel
| | - Revital Kaminker
- Department of Organic Chemistry; Weizmann Institute of Science; Rehovot 7610001 Israel
| | - Michal Lahav
- Department of Organic Chemistry; Weizmann Institute of Science; Rehovot 7610001 Israel
| | - Milko E. van der Boom
- Department of Organic Chemistry; Weizmann Institute of Science; Rehovot 7610001 Israel
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Ramsay WJ, Foster JA, Moore KL, Ronson TK, Mirgalet RJ, Jefferson DA, Nitschke JR. Au ICl-bound N-heterocyclic carbene ligands form MII4(LAuCl) 6 integrally gilded cages. Chem Sci 2015; 6:7326-7331. [PMID: 28757991 PMCID: PMC5512534 DOI: 10.1039/c5sc03065j] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2015] [Accepted: 09/23/2015] [Indexed: 11/21/2022] Open
Abstract
The incorporation of an N-heterocyclic carbene (NHC) moiety into a self-assembled MII4L6 cage framework required the NHC first to be metallated with gold(i). Bimetallic cages could then be constructed using zinc(ii) and cadmium(ii) templates, showing weak luminescence. The cages were destroyed by the addition of further gold(i) in the form of AuI(2,4,6-trimethoxybenzonitrile)2SbF6, which caused the reversibly-formed cages to disassemble and controllably release the AuI-NHC subcomponent into solution. This release in turn induced the growth of gold nanoparticles. The rate of dianiline release could be tuned by capsule design or through the addition of chemical stimuli, with different release profiles giving rise to different nanoparticle morphologies.
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Affiliation(s)
- William J Ramsay
- Department of Chemistry , University of Cambridge , Lensfield Road , Cambridge CB2 1EW , UK .
| | - Jonathan A Foster
- Department of Chemistry , University of Cambridge , Lensfield Road , Cambridge CB2 1EW , UK .
| | - Katharine L Moore
- Department of Chemistry , University of Cambridge , Lensfield Road , Cambridge CB2 1EW , UK .
| | - Tanya K Ronson
- Department of Chemistry , University of Cambridge , Lensfield Road , Cambridge CB2 1EW , UK .
| | - Raphaël J Mirgalet
- Department of Chemistry , University of Cambridge , Lensfield Road , Cambridge CB2 1EW , UK .
| | - David A Jefferson
- Department of Chemistry , University of Cambridge , Lensfield Road , Cambridge CB2 1EW , UK .
| | - Jonathan R Nitschke
- Department of Chemistry , University of Cambridge , Lensfield Road , Cambridge CB2 1EW , UK .
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Du A, Zhou B, Xu W, Yu Q, Shen Y, Zhang Z, Shen J, Wu G. Reaction-induced microsyneresis in oxide-based gels: the assembly of hierarchical microsphere networks. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:11208-11216. [PMID: 23947619 DOI: 10.1021/la401579z] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Rigid and stable networks composed of litchi-shaped microspheres were formed via hierarchical self-assembly (SA) of oxide-based nanoparticles (NPs). The phenomenon of the apparent changes from NPs networks to microspheres networks after the gelation was similar to normal microsyneresis. However, in-situ composition evolution results indicate that the SA is driven by interparticle dehydration, but not affinity difference between the network for itself and for the solvent. In-situ small-angle X-ray scattering (SAXS), UV-vis-NIR, and electric conductivity were used to study the microsyneresis process. To further demonstrate the mechanism, extra complexant was added and successfully restrained the NPs-microsphere transition by inactivating the surface hydroxyl of the NPs. Considering the structural similarity, this work may provide a new approach to control the assemblies of diverse oxide-based NPs.
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Affiliation(s)
- Ai Du
- Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology, School of Physics Science and Engineering, Tongji University , Shanghai 200092, P. R. China
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Düring J, Hölzer A, Kolb U, Branscheid R, Gröhn F. Supramolekulare organisch-anorganische Hybridaggregate mit variabler Partikelgröße: Zusammenspiel von drei nichtkovalenten Wechselwirkungen. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201302773] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Düring J, Hölzer A, Kolb U, Branscheid R, Gröhn F. Supramolecular Organic-Inorganic Hybrid Assemblies with Tunable Particle Size: Interplay of Three Noncovalent Interactions. Angew Chem Int Ed Engl 2013; 52:8742-5. [DOI: 10.1002/anie.201302773] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2013] [Revised: 05/29/2013] [Indexed: 11/10/2022]
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Kikkeri R, Padler-Karavani V, Diaz S, Verhagen A, Yu H, Cao H, Langereis MA, De Groot RJ, Chen X, Varki A. Quantum dot nanometal surface energy transfer based biosensing of sialic acid compositions and linkages in biological samples. Anal Chem 2013; 85:3864-70. [PMID: 23489180 PMCID: PMC5996995 DOI: 10.1021/ac400320n] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Current methods for analyzing sialic acid diversity in modifications and linkages require multistep processing, derivatization, and chromatographic analyses. We here report a single-step optical method for identification and quantification of different compositions of sialoglycans on glycoproteins and in serum. This was achieved by measuring and quantifying nanometal surface energy transfer (NSET) signals between quantum dots and gold nanoparticles bound to specific sialic acid binding proteins (SBPs) and sialic acid moieties, respectively. The biosensing process is based on the NSET turn-on by external sialic acid species that compete for binding to the SBPs. Selectivity of the biosensor toward sialoglycans can be designed to detect the total amount, glycosylation linkages (α2-6 vs α2-3), and modifications (9-O-acetyl and N-glycolyl groups) in the samples. This nanobiosensor is a prototype expected to achieve limits of the detection down to the micromolar range for high-throughput quantification and analysis of different compositions of sialoglycans present in biological or biomedical samples.
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Affiliation(s)
- Raghavendra Kikkeri
- Glycobiology Research and Training Center, Departments of Medicine and Cellular and Molecular Medicine, University of California, San Diego, La Jolla, California, United States
| | - Vered Padler-Karavani
- Glycobiology Research and Training Center, Departments of Medicine and Cellular and Molecular Medicine, University of California, San Diego, La Jolla, California, United States
| | - Sandra Diaz
- Glycobiology Research and Training Center, Departments of Medicine and Cellular and Molecular Medicine, University of California, San Diego, La Jolla, California, United States
| | - Andrea Verhagen
- Glycobiology Research and Training Center, Departments of Medicine and Cellular and Molecular Medicine, University of California, San Diego, La Jolla, California, United States
| | - Hai Yu
- Department of Chemistry, University of California, Davis, California 95616, United States
| | - Hongzhi Cao
- Department of Chemistry, University of California, Davis, California 95616, United States
| | - Martijn A. Langereis
- Virology Division, Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 1, 3584 CL Utrecht, The Netherlands
| | - Raoul J. De Groot
- Virology Division, Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 1, 3584 CL Utrecht, The Netherlands
| | - Xi Chen
- Department of Chemistry, University of California, Davis, California 95616, United States
| | - Ajit Varki
- Glycobiology Research and Training Center, Departments of Medicine and Cellular and Molecular Medicine, University of California, San Diego, La Jolla, California, United States
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Boterashvili M, Lahav M, Shirman T, Freeman D, van der Boom ME. Integrated and Segregated Au/γ-Fe2O3Binary Nanoparticle Assemblies. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201207469] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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9
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Boterashvili M, Lahav M, Shirman T, Freeman D, van der Boom ME. Integrated and Segregated Au/γ-Fe2O3Binary Nanoparticle Assemblies. Angew Chem Int Ed Engl 2012; 51:12268-71. [DOI: 10.1002/anie.201207469] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2012] [Indexed: 02/05/2023]
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