2D host–guest supramolecular chemistry for an on-monolayer graphene emitting platform,Materials Horizons

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2D host–guest supramolecular chemistry for an on-monolayer graphene emitting platform
Materials Horizons ( IF 12.2 ) Pub Date : 2020-08-10 , DOI: 10.1039/d0mh00950d
Byeonggwan Kim _{1,

2,

3,

4,

5} , Cheolhyun Cho _{4,

5,

6,

7} , Imad Arfaoui _{8,

9,

10,

11,

12} , Céline Paris _{8,

9,

10,

11,

12} , Christophe Petit _{8,

9,

10,

11,

12} , Tangui Le Bahers _{1,

2,

3,

4,

5} , Eunkyoung Kim _{1,

2,

3,

4,

5} , André-Jean Attias _{1,

2,

3,

4,

5}

Affiliation

Here is reported a novel strategy of non-covalent functionalization of graphene to avoid the electronic coupling between this semi-metal and directly adsorbed optically active molecules. Graphene-confined supramolecular host–guest recognition is used to elaborate an emitting hybrid platform. It is shown that the cavities of an on-monolayer graphene nanoporous self-assembled network are able to trap zinc phthalocyanine molecules coordinated to an emitting axial ligand. As a result, the emission of the hybrid system exhibits the same features as the isolated molecular emitter, demonstrating that the fluorescence is not quenched by graphene and that the well-controlled inter-chromophore distance prevents any interaction between the dyes. Furthermore, an in-depth modelling study confirms the weak interaction between the out of plane emitting moieties and the monolayer graphene. This work opens a new avenue for the realization of innovative light-responsive graphene-based devices in nanophotonics and optoelectronics.

中文翻译：

单层石墨烯发射平台的二维宿主-客体超分子化学

此处报道了一种新的石墨烯非共价官能化策略，可避免这种半金属与直接吸附的旋光分子之间的电子偶联。石墨烯限制的超分子宿主-客体识别可用于构建发光的杂交平台。结果表明，单层石墨烯纳米多孔自组装网络的空腔能够捕获配位到发射轴向配体的锌酞菁分子。结果，杂化系统的发射显示出与分离的分子发射器相同的特征，表明荧光没有被石墨烯猝灭，并且良好控制的生色团间距离阻止了染料之间的任何相互作用。此外，一项深入的建模研究证实了面外发射部分与单层石墨烯之间的弱相互作用。这项工作为在纳米光子学和光电子学中实现创新的基于光响应石墨烯的器件开辟了新途径。

更新日期：2020-10-05

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