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Hydration-Facilitated Coordination Tuning of Metal–Organic Frameworks toward Water-Responsive Fluorescence and Proton Conduction
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2022-11-09 , DOI: 10.1021/acs.inorgchem.2c03341 Yuanchao Lv 1 , Jiashuai Liang 1 , Delin Li 1 , Zhile Xiong 1 , Kaicong Cai 1 , Shengchang Xiang 1 , Zhangjing Zhang 1
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2022-11-09 , DOI: 10.1021/acs.inorgchem.2c03341 Yuanchao Lv 1 , Jiashuai Liang 1 , Delin Li 1 , Zhile Xiong 1 , Kaicong Cai 1 , Shengchang Xiang 1 , Zhangjing Zhang 1
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Developing smart stimuli-responsive metal–organic frameworks (MOFs) with diversified induced readable signals is highly desirable; however, reported multimode responsive MOFs are always achieved under strong environmental stimulations, making it difficult to keep MOF structures stable for practical applications. Herein, we reported a hydration-facilitated coordination tuning strategy to achieve the dual-mode water response in fluorescence and proton conduction from a single MOF. The designed MOF permitted reversible single-crystal transformation via the controllable hydration effect on metal nodes. The change in coordination modes leads to the regulation on conformations of optical ligands, contributing to the switch of fluorescence emissions. Moreover, the hydration effect adds additional hydrogen-bond sites in channels and optimizes hydrogen-bond networks, abruptly enhancing the proton conductivity by ∼20 times. These results pave new avenues for the exploitation of smart MOFs with multimode responsive behavior for on-demand sensing/detection applications.
中文翻译：
水合促进配位调整金属-有机框架对水响应荧光和质子传导
开发具有多样化诱导可读信号的智能刺激响应金属有机框架（MOF）是非常可取的；然而，报道的多模响应 MOF 总是在强烈的环境刺激下实现，这使得在实际应用中难以保持 MOF 结构稳定。在此，我们报道了一种水化促进的协调调整策略，以实现来自单个 MOF 的荧光和质子传导的双模式水响应。设计的 MOF 通过对金属节点的可控水化作用允许可逆的单晶转变。配位模式的变化导致光学配体构象的调节，有助于荧光发射的转换。而且，水合效应在通道中增加了额外的氢键位点并优化了氢键网络，突然将质子传导性提高了约 20 倍。这些结果为按需传感/检测应用开发具有多模式响应行为的智能 MOF 铺平了道路。
更新日期：2022-11-09
中文翻译：
水合促进配位调整金属-有机框架对水响应荧光和质子传导
开发具有多样化诱导可读信号的智能刺激响应金属有机框架（MOF）是非常可取的；然而，报道的多模响应 MOF 总是在强烈的环境刺激下实现，这使得在实际应用中难以保持 MOF 结构稳定。在此，我们报道了一种水化促进的协调调整策略，以实现来自单个 MOF 的荧光和质子传导的双模式水响应。设计的 MOF 通过对金属节点的可控水化作用允许可逆的单晶转变。配位模式的变化导致光学配体构象的调节，有助于荧光发射的转换。而且，水合效应在通道中增加了额外的氢键位点并优化了氢键网络，突然将质子传导性提高了约 20 倍。这些结果为按需传感/检测应用开发具有多模式响应行为的智能 MOF 铺平了道路。
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