Artificial NO and Light Cooperative Nanofluidic Diode Inspired by Stomatal Closure of Guard Cells,ACS Applied Materials & Interfaces

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Artificial NO and Light Cooperative Nanofluidic Diode Inspired by Stomatal Closure of Guard Cells
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2018-01-16 00:00:00 , DOI: 10.1021/acsami.7b14505
Ruirui Li ₁ , Xin Sui ₁ , Chao Li ₁ , Jiaqiao Jiang ₁ , Jin Zhai ₁ , Longcheng Gao ₁

Affiliation

Gas messenger molecule (NO) plays important roles in K⁺ nanochannels of guard cells by binding directly to the heme-containing enzymes. Inspired by this natural phenomenon, we developed artificial K⁺ nanochannels modified with ferroporphyrin, where NO triggered the nanochannels to turn “ON” states from the ferroporphyrin blocked “OFF” states. The mechanism relies on the fact that NO has higher affinity with ferroporphyrin compared to carboxyl groups on the nanochannel surface. The synergistic effect of the released carboxyl groups and the conically asymmetric shape leads the ion transportation to be diode-like. However, the nanofluidic diode properties vanished after illumination with light to remove NO from the ferroporphyrin–NO complex. This NO and light cooperative nanofluidic diode possesses excellent stability and reversibility, which shows great promise for use in gas detection and remote control of mass delivery.

中文翻译：

保卫细胞气孔关闭启发人工NO和光合作纳米流体二极管

气体信使分子（NO）通过直接与含血红素的酶结合，在保卫细胞的K ⁺纳米通道中发挥重要作用。受这种自然现象的启发，我们开发了人工K ⁺铁卟啉修饰的纳米通道，其中NO触发纳米通道从铁卟啉阻断的“ OFF”状态变为“ ON”状态。该机制依赖于以下事实：与纳米通道表面的羧基相比，NO与铁卟啉具有更高的亲和力。释放的羧基和圆锥形不对称形状的协同作用导致离子传输呈二极管状。但是，用光照射以除去铁卟啉-NO络合物中的NO后，纳米流体二极管的特性消失了。这种NO和光合作纳米流体二极管具有出色的稳定性和可逆性，这在气体检测和质量传递的远程控制中具有广阔的应用前景。

更新日期：2018-01-16

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