Air-stable, long-length, solution-based graphene nanoribbons,Chemical Science

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Air-stable, long-length, solution-based graphene nanoribbons
Chemical Science ( IF 7.6 ) Pub Date : 2020-09-09 , DOI: 10.1039/d0sc02105a
Samuel R. Peurifoy _{1,

2,

3,

4} , Qizhi Xu _{1,

2,

3,

4} , Richard May _{2,

3,

4,

5} , Natalia A. Gadjieva _{1,

2,

3,

4} , Thomas J. Sisto _{4,

6,

7} , Zexin Jin _{1,

2,

3,

4} , Lauren E. Marbella _{2,

3,

4,

5} , Colin Nuckolls _{1,

2,

3,

4}

Affiliation

Within the context of nanoelectronics, general strategies for the development of electronically tunable and air stable graphene nanoribbons are crucial. Previous studies towards the goal of processable nanoribbons have been complicated by ambient condition instability, insolubility arising from aggregation, or poor cyclization yield due to electron deficiency. Herein, we present a general strategy for the elongation of smaller graphene nanoribbon fragments into air-stable, easily processed, and electronically tunable nanoribbons. This strategy is facilitated by the incorporation of electron-rich donor units between electron-poor acceptor perylene diimide oligomeric units. The ribbons are processed in solution via a visible-light flow photocyclization using LEDs. The resulting long nanoribbons can be solution-cast and imaged, which are necessary characteristics for device fabrication. The ribbons become conductive after thermolysis of the pendent side-chains. The electron-accepting character of these nanoribbons in solution is reversible, and the conductivity of the thermolyzed species as a solid remains stable. This work highlights our general strategy for the mild and reliable fabrication of tunable and ambient-stable graphene nanoribbons, and charts a straightforward route for facile device incorporation.

中文翻译：

空气稳定的长型溶液基石墨烯纳米带

在纳米电子学的背景下，开发电子可调和空气稳定的石墨烯纳米带的一般策略至关重要。先前针对可加工纳米带的目标的研究由于环境条件的不稳定性，聚集引起的不溶性或由于电子缺乏引起的环化收率差而变得复杂。在本文中，我们提出了将较小的石墨烯纳米带片段伸长成空气稳定，易于加工和电子可调的纳米带的一般策略。通过在贫电子受体per二酰亚胺低聚物单元之间引入富电子供体单元，可以促进该策略。色带通过以下方式在溶液中处理使用LED的可见光光环化。所得的长纳米带可以溶液浇铸和成像，这是器件制造的必要特性。悬垂侧链热解后，碳带导电。这些纳米带在溶液中的电子接受特性是可逆的，并且作为固体的被热物质的电导率保持稳定。这项工作突出了我们在温和而可靠地制造可调谐且环境稳定的石墨烯纳米带方面的总体策略，并绘制了简便的装置集成的简单方法。

更新日期：2020-09-23

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