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Coffee Ring–Inspired Approach toward Oriented Self‐Assembly of Biomimetic Murray MOFs as Sweat Biosensor
Small ( IF 13.3 ) Pub Date : 2018-10-18 , DOI: 10.1002/smll.201802670
Zhengyun Wang 1 , Ting Liu 1 , Yang Yu 1 , Muhammad Asif 1 , Ning Xu 1 , Fei Xiao 1 , Hongfang Liu 1
Affiliation  

The emergence of metal–organic frameworks (MOFs) has sparked intensive attention and opened up the possibility of “crystal engineering.” However, low conductivity, slow diffusion of guest molecules, as well as powder forms always hinder the development of MOF application, especially for biosensors and bioelectronics. Herein, a coffee ring–inspired strategy toward oriented self‐assembly of a biomimetic MOF film following Murray's law is proposed, which can effectively reduce the transfer resistance. The approach includes two types of self‐assembly, evaporation‐driven and heteroepitaxy self‐assembly, and endows the centimeter‐expanded MOF film with oriented macropores, mesopores, and micropores. The Murray MOF network enables greatly enhanced electrons and mass transfer efficiency for electrochemical sensing. Also, the newly discovered lactate and glucose sensing abilities in a wide pH hold striking potential in new generation of wearable sweat biosensors, miniature bioelectronics, and lab‐on‐a‐chip devices.

中文翻译:

Coffee Ring启发式的仿生Murray MOFs作为汗液生物传感器的定向自组装方法。

金属有机框架(MOF)的出现引起了人们的广泛关注,并开辟了“晶体工程”的可能性。但是,低电导率,客体分子的缓慢扩散以及粉末形式始终阻碍MOF应用的发展,尤其是对于生物传感器和生物电子学而言。在此,提出了一种遵循穆雷定律的仿生MOF薄膜取向自组装的启发咖啡环策略,该策略可有效降低转印阻力。该方法包括两种自组装类型,即蒸发驱动和异外加自组装,并且使厘米膨胀的MOF薄膜具有定向的大孔,中孔和微孔。Murray MOF网络可大大提高电子和传质的电化学感应效率。还,
更新日期:2018-10-18
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