Hexa-Branched Nanographenes with Large Two-Photon Absorption
The conventional approach toward molecules with large two-photon absorption (TPA) involves donor-acceptor conjugation. Herein we show a new strategy involving the use of hexa-branched nanographenes. We synthesized two hexa-branched nanographenes, one with six benzoaceanthrylene arms fused to the coronene core and the other with six pyrenyl arms fused to the coronene core. Neither of these hexa-branched nanographenes has a donor-acceptor structure, yet they exhibited high TPA values of 3.6 × 103 and 1.9 × 104 GM, respectively, which are the highest values recorded for heteroatom-free hydrocarbon molecules. Theoretical analysis suggests that the fused branched structures are responsible for the large TPA cross-section. These findings illustrate the importance of the topology of the fused conjugated skeleton in TPA and provide an alternative structural design toward large TPA.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2023 |
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| Erschienen: |
2023 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:145 |
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| Enthalten in: |
Journal of the American Chemical Society - 145(2023), 35 vom: 06. Sept., Seite 19333-19337 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Zhao, Xin-Jing [VerfasserIn] |
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| Links: |
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| Anmerkungen: |
Date Revised 06.09.2023 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
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| doi: |
10.1021/jacs.3c05662 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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NLM361366620 |
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| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status PubMed-not-MEDLINE | ||
| 520 | |a The conventional approach toward molecules with large two-photon absorption (TPA) involves donor-acceptor conjugation. Herein we show a new strategy involving the use of hexa-branched nanographenes. We synthesized two hexa-branched nanographenes, one with six benzoaceanthrylene arms fused to the coronene core and the other with six pyrenyl arms fused to the coronene core. Neither of these hexa-branched nanographenes has a donor-acceptor structure, yet they exhibited high TPA values of 3.6 × 103 and 1.9 × 104 GM, respectively, which are the highest values recorded for heteroatom-free hydrocarbon molecules. Theoretical analysis suggests that the fused branched structures are responsible for the large TPA cross-section. These findings illustrate the importance of the topology of the fused conjugated skeleton in TPA and provide an alternative structural design toward large TPA | ||
| 650 | 4 | |a Journal Article | |
| 700 | 1 | |a Ju, Yang-Yang |e verfasserin |4 aut | |
| 700 | 1 | |a Su, Yu-Ming |e verfasserin |4 aut | |
| 700 | 1 | |a Tang, Chun |e verfasserin |4 aut | |
| 700 | 1 | |a Zeng, Qi |e verfasserin |4 aut | |
| 700 | 1 | |a Feng, LiuBin |e verfasserin |4 aut | |
| 700 | 1 | |a Wang, Cheng |e verfasserin |4 aut | |
| 700 | 1 | |a Müllen, Klaus |e verfasserin |4 aut | |
| 700 | 1 | |a Tan, Yuan-Zhi |e verfasserin |4 aut | |
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