Self-assembly of gold nanoparticles grafted with amphiphilic supramolecular block copolymers
Design of polymer grafted plasmonic metal nanoparticles (PGNPs) has received continuous interest due to polymer-driven self-assembly of plasmonic nanoparticles (NPs) as a means to control interparticle plasmon coupling in ensembles. We report the use of supramolecular “V-shaped” block copolymers (VB...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-06-01
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| Series: | Giant |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666542522000133 |
| _version_ | 1818501910858039296 |
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| author | Zichao Wei Chung-Hao Liu Hanyi Duan Qiang Luo Margaret Huang Srinivas Thanneeru Mu-Ping Nieh Jie He |
| author_facet | Zichao Wei Chung-Hao Liu Hanyi Duan Qiang Luo Margaret Huang Srinivas Thanneeru Mu-Ping Nieh Jie He |
| author_sort | Zichao Wei |
| collection | DOAJ |
| description | Design of polymer grafted plasmonic metal nanoparticles (PGNPs) has received continuous interest due to polymer-driven self-assembly of plasmonic nanoparticles (NPs) as a means to control interparticle plasmon coupling in ensembles. We report the use of supramolecular “V-shaped” block copolymers (VBCPs) as surface ligands of PGNPs to study their hydrophobicity-driven self-assembly. The amphiphilic VBCPs are prepared from two homopolymers, namely dipicolyamine (DPA)-terminated polystyrene (PS) and pyridine (Py)-terminated poly(N,N-dimethylacrylamide) (PDMA) where the two polymers are bridged with Cu2+ ions. Those supramolecular VBCPs formed spherical micelles in the range of 100–300 nm, much larger than those of linear BCPs with similar chemical composition as a result of Cu2+ ions at the hydrophobic/hydrophilic interface. Thioester-containing supramolecular polymers can modify plasmonic AuNPs through ligand exchange even in the presence of Cu2+ ions. Those supramolecular polymers can drive PGNPs to form giant vesicles and two-dimensional (2-D) layered nanosheets. Using in situ light scattering, the supramolecular dynamics is found to allow maximum chain reconformation of polymer ligands where the interparticle distance of PGNPs grafted with VBCPs is smaller compared to that of PGNPs with linear BCPs. The assembled nanostructures with VBCPs also showed similar stimuli-responsive properties where the dissociation of DPA-Cu2+-Py coordination results in the disruption of assembled nanostructures. The supramolecular approaches potentially provide a new toolbox to design PGNP assemblies with tunable nanostructures and interesting dynamic properties enabled by non-covalent interaction. |
| first_indexed | 2024-12-10T21:02:47Z |
| format | Article |
| id | doaj.art-f1ca77cf7e3c4cf1962cf961e0e73bdf |
| institution | Directory Open Access Journal |
| issn | 2666-5425 |
| language | English |
| last_indexed | 2024-12-10T21:02:47Z |
| publishDate | 2022-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Giant |
| spelling | doaj.art-f1ca77cf7e3c4cf1962cf961e0e73bdf2022-12-22T01:33:44ZengElsevierGiant2666-54252022-06-0110100102Self-assembly of gold nanoparticles grafted with amphiphilic supramolecular block copolymersZichao Wei0Chung-Hao Liu1Hanyi Duan2Qiang Luo3Margaret Huang4Srinivas Thanneeru5Mu-Ping Nieh6Jie He7Department of Chemistry, University of Connecticut, Storrs, CT 06269, USAPolymer Program, University of Connecticut, Storrs, CT 06269, USAPolymer Program, University of Connecticut, Storrs, CT 06269, USADepartment of Chemistry, University of Connecticut, Storrs, CT 06269, USADepartment of Chemistry, University of Connecticut, Storrs, CT 06269, USADepartment of Chemistry, University of Connecticut, Storrs, CT 06269, USAPolymer Program, University of Connecticut, Storrs, CT 06269, USA; Institute of Materials Science, University of Connecticut, Storrs, CT 06269, USA; Department of Chemical and Biomolecular Engineering, University of Connecticut, Storrs, CT 06269, USADepartment of Chemistry, University of Connecticut, Storrs, CT 06269, USA; Polymer Program, University of Connecticut, Storrs, CT 06269, USA; Institute of Materials Science, University of Connecticut, Storrs, CT 06269, USA; Corresponding author.Design of polymer grafted plasmonic metal nanoparticles (PGNPs) has received continuous interest due to polymer-driven self-assembly of plasmonic nanoparticles (NPs) as a means to control interparticle plasmon coupling in ensembles. We report the use of supramolecular “V-shaped” block copolymers (VBCPs) as surface ligands of PGNPs to study their hydrophobicity-driven self-assembly. The amphiphilic VBCPs are prepared from two homopolymers, namely dipicolyamine (DPA)-terminated polystyrene (PS) and pyridine (Py)-terminated poly(N,N-dimethylacrylamide) (PDMA) where the two polymers are bridged with Cu2+ ions. Those supramolecular VBCPs formed spherical micelles in the range of 100–300 nm, much larger than those of linear BCPs with similar chemical composition as a result of Cu2+ ions at the hydrophobic/hydrophilic interface. Thioester-containing supramolecular polymers can modify plasmonic AuNPs through ligand exchange even in the presence of Cu2+ ions. Those supramolecular polymers can drive PGNPs to form giant vesicles and two-dimensional (2-D) layered nanosheets. Using in situ light scattering, the supramolecular dynamics is found to allow maximum chain reconformation of polymer ligands where the interparticle distance of PGNPs grafted with VBCPs is smaller compared to that of PGNPs with linear BCPs. The assembled nanostructures with VBCPs also showed similar stimuli-responsive properties where the dissociation of DPA-Cu2+-Py coordination results in the disruption of assembled nanostructures. The supramolecular approaches potentially provide a new toolbox to design PGNP assemblies with tunable nanostructures and interesting dynamic properties enabled by non-covalent interaction.http://www.sciencedirect.com/science/article/pii/S2666542522000133 |
| spellingShingle | Zichao Wei Chung-Hao Liu Hanyi Duan Qiang Luo Margaret Huang Srinivas Thanneeru Mu-Ping Nieh Jie He Self-assembly of gold nanoparticles grafted with amphiphilic supramolecular block copolymers Giant |
| title | Self-assembly of gold nanoparticles grafted with amphiphilic supramolecular block copolymers |
| title_full | Self-assembly of gold nanoparticles grafted with amphiphilic supramolecular block copolymers |
| title_fullStr | Self-assembly of gold nanoparticles grafted with amphiphilic supramolecular block copolymers |
| title_full_unstemmed | Self-assembly of gold nanoparticles grafted with amphiphilic supramolecular block copolymers |
| title_short | Self-assembly of gold nanoparticles grafted with amphiphilic supramolecular block copolymers |
| title_sort | self assembly of gold nanoparticles grafted with amphiphilic supramolecular block copolymers |
| url | http://www.sciencedirect.com/science/article/pii/S2666542522000133 |
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