Graphene-Activated Optoplasmonic Nanomembrane Cavities for Photodegradation Detection.
Graphene-Activated Optoplasmonic Nanomembrane Cavities for Photodegradation Detection.
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DOI：
10.1021/acsami.9b00733
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发表时间：
2019-04
影响因子：
9.5
通讯作者：
Yin Yin-Yin;Jinbo Pang;Jiawei Wang;Xueyi Lu;Qi Hao;Ehsan Saei Ghareh Naz;Xinxing Zhou;Libo Ma
中科院分区：
文献类型：
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作者：
Yin Yin-Yin;Jinbo Pang;Jiawei Wang;Xueyi Lu;Qi Hao;Ehsan Saei Ghareh Naz;Xinxing Zhou;Libo Ma
石墨烯具有良好的化学稳定性、生物相容性和电场增强能力，通过与传统的光学和等离子体激元器件集成，具有上级性能，在光学和光电领域具有巨大的应用潜力。在这里，我们设计和展示了石墨烯激活的光等离子体腔的基础上卷起的纳米膜，这是用于原位监测的光降解动力学的有机染料分子的分子水平上的真实的时间。石墨烯层的存在显著增强了腔表面处的混合光等离子体模式的电场，从而实现了高度灵敏的表面检测。石墨烯激活的传感器表面上的罗丹明6G分子的降解由局部激光照射触发，并通过测量光学共振位移来监测。我们的演示为基于共振的光学传感器的光降解的实时，高精度分析铺平了道路，这有望全面了解降解机理和探索有效的光催化剂。
Graphene, with its excellent chemical stability, biocompatibility, and capability of electric field enhancement, has a great potential in optical and optoelectronic applications with superior performances by integrating with conventional optical and plasmonic devices. Here, we design and demonstrate graphene-activated optoplasmonic cavities based on rolled-up nanomembranes, which are employed for in situ monitoring the photodegradation dynamics of organic dye molecules on the molecular level in real time. The presence of the graphene layer significantly enhances the electric field of hybrid optoplasmonic modes at the cavity surface, enabling a highly sensitive surface detection. The degradation of rhodamine 6G molecules on the graphene-activated sensor surface is triggered by localized laser irradiation and monitored by measuring the optical resonance shift. Our demonstration paves the way for real-time, high-precision analysis of photodegradation by resonance-based optical sensors, which promises the comprehensive understanding of degradation mechanism and exploration of effective photocatalysts.