Inserting Porphyrin Quantum Dots in Bottom-Up Synthesized Graphene Nanoribbons
Diels–Alder copolymerization of tetraphenylcyclopentadienone, a precursor for cove graphene nanoribbons (cGNRs), with bifunctional porphyrins yields defined nanostructures comprised of a single cGNR-porphyrin-cGNR heterojunction within each ribbon. 13C NMR labeling and high-resolution mass spectrometry of solubilized polymer intermediates indicates that every porphyrin is covalently linked to two extended segments of cGNRs. UV/Vis absorption and fluorescence emission spectroscopy reveal a strong electronic correlation between the porphyrin and the adjacent cGNR segments that can be attenuated through reversible metalation of the porphyrin core. This versatile bottom-up synthetic strategy provides access to structurally well-defined, functional GNR-quantum dot-GNR heterostructures within a single graphene nanoribbon.
- Authors:
-
[1]
;
[2]
- Univ. of California, Berkeley, CA (United States). Dept. of Chemistry
- Univ. of California, Berkeley, CA (United States). Dept. of Chemistry; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Science Division; Univ. of California, Berkeley, CA (United States). Kavli Energy NanoSciences Inst.
- Publication Date:
- Grant/Contract Number:
- AC02-05CH11231; SC0010409
- Type:
- Accepted Manuscript
- Journal Name:
- Chemistry - A European Journal
- Additional Journal Information:
- Journal Volume: 23; Journal Issue: 70; Journal ID: ISSN 0947-6539
- Publisher:
- ChemPubSoc Europe
- Research Org:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Org:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; USDOE
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE
- OSTI Identifier:
- 1461124
- Alternate Identifier(s):
- OSTI ID: 1410700