Synthesis and properties of porphyrin nanotubes
Discrete π‐conjugated zinc porphyrin nanotubes are investigated as molecular analogues of carbon nanotubes. These porphyrin nanotubes have a diameter of 2.4 nm (Zn–Zn distance) and lengths of up to 3.6 nm, measured to the van der Waals surfaces of the outer β‐pyrrole hydrogen atoms, or 4.5 nm measur...
| Main Authors: | , |
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| Format: | Journal article |
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Wiley
2018
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| _version_ | 1797083525253431296 |
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| author | Haver, R Anderson, H |
| author_facet | Haver, R Anderson, H |
| author_sort | Haver, R |
| collection | OXFORD |
| description | Discrete π‐conjugated zinc porphyrin nanotubes are investigated as molecular analogues of carbon nanotubes. These porphyrin nanotubes have a diameter of 2.4 nm (Zn–Zn distance) and lengths of up to 3.6 nm, measured to the van der Waals surfaces of the outer β‐pyrrole hydrogen atoms, or 4.5 nm measured to the para hydrogen atoms of the aryl groups. We explore three different strategies for synthesizing these nanotubes. The first two strategies use a template to achieve direct or sequential stave‐joining, respectively, and proceed via linear oligomers that pre‐define the length of the nanotube. These strategies are applied to synthesize porphyrin nanotubes containing 12‐ or 18‐porphyrin subunits, with ethynylene (C2) or butadiynylene (C4) links between the 6‐porphyrin nanorings. The third strategy involves the covalent stacking of pre‐formed 6‐porphyrin nanorings to form a 12‐porphyrin nanotube, without using a template to guide this coupling reaction. The nanotubes show strongly red‐shifted absorption spectra and low fluorescence quantum yields, indicating structural rigidity and extensive π‐conjugation. |
| first_indexed | 2024-03-07T01:42:50Z |
| format | Journal article |
| id | oxford-uuid:97729d31-d732-47e1-b50a-1a63e1d89502 |
| institution | University of Oxford |
| last_indexed | 2024-03-07T01:42:50Z |
| publishDate | 2018 |
| publisher | Wiley |
| record_format | dspace |
| spelling | oxford-uuid:97729d31-d732-47e1-b50a-1a63e1d895022022-03-26T23:59:39ZSynthesis and properties of porphyrin nanotubesJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:97729d31-d732-47e1-b50a-1a63e1d89502Symplectic Elements at OxfordWiley2018Haver, RAnderson, HDiscrete π‐conjugated zinc porphyrin nanotubes are investigated as molecular analogues of carbon nanotubes. These porphyrin nanotubes have a diameter of 2.4 nm (Zn–Zn distance) and lengths of up to 3.6 nm, measured to the van der Waals surfaces of the outer β‐pyrrole hydrogen atoms, or 4.5 nm measured to the para hydrogen atoms of the aryl groups. We explore three different strategies for synthesizing these nanotubes. The first two strategies use a template to achieve direct or sequential stave‐joining, respectively, and proceed via linear oligomers that pre‐define the length of the nanotube. These strategies are applied to synthesize porphyrin nanotubes containing 12‐ or 18‐porphyrin subunits, with ethynylene (C2) or butadiynylene (C4) links between the 6‐porphyrin nanorings. The third strategy involves the covalent stacking of pre‐formed 6‐porphyrin nanorings to form a 12‐porphyrin nanotube, without using a template to guide this coupling reaction. The nanotubes show strongly red‐shifted absorption spectra and low fluorescence quantum yields, indicating structural rigidity and extensive π‐conjugation. |
| spellingShingle | Haver, R Anderson, H Synthesis and properties of porphyrin nanotubes |
| title | Synthesis and properties of porphyrin nanotubes |
| title_full | Synthesis and properties of porphyrin nanotubes |
| title_fullStr | Synthesis and properties of porphyrin nanotubes |
| title_full_unstemmed | Synthesis and properties of porphyrin nanotubes |
| title_short | Synthesis and properties of porphyrin nanotubes |
| title_sort | synthesis and properties of porphyrin nanotubes |
| work_keys_str_mv | AT haverr synthesisandpropertiesofporphyrinnanotubes AT andersonh synthesisandpropertiesofporphyrinnanotubes |