Herein, we design and synthesize a novel all-carbon supramolecular polymer host () containing conjugated macrocycles interconnected by a linear poly(-phenylene) backbone. Applying the supramolecular host and fullerene C as the guest, we successfully construct a supramolecular polymeric heterojunction (⊃C). This carbon structure offers a means to explore the convex-concave π-π interactions between and C. The produced was characterized by gel permeation chromatography, mass spectrometry, FTIR, Raman spectroscopy, and other spectroscopies. The polymeric segment can be directly viewed using a scanning tunneling microscope. Femtosecond transient absorption and fluorescence up-conversion measurements revealed femtosecond (≪300 fs) electron transfer from photoexcited to C, followed by nanosecond charge recombination to produce the C triplet excited state. The potential applications of ⊃C in electron- and hole-transport devices were also investigated, revealing that C incorporation enhances the charge transport properties of . These results expand the scope of the synthesis and application of supramolecular polymeric heterojunctions.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8356743 | PMC |
| http://dx.doi.org/10.1039/d1sc03410c | DOI Listing |
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