Nanoporous Zn-Based Metal-Organic Framework Nanoparticles for Fluorescent pH Sensing and Thermochromism

被引：34
作者：
Das, Prasenjit [1 ]
Mandal, Sanjay K. [1 ]
机构：
[1] Indian Inst Sci Educ & Res Mohali, Dept Chem Sci, Mohali 140306, Punjab, India
来源：
ACS APPLIED NANO MATERIALS | 2020年 / 3卷 / 09期
关键词：
luminescent MOF nanoparticles; nanoporous Zn-MOF; thermally and chemically stable; fluorescent pH sensing; fluorescence microscopy; temperature detection; COORDINATION POLYMERS; LIGHT-EMISSION; MOF; SENSOR; RANGE;
D O I：
10.1021/acsanm.0c02132
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Dual-functional porous metal-organic framework (MOF) nanoparticles have generated a great platform for developing various types of luminescent sensors because of their inconceivable structural diversity and tunable properties. We report the dual-functional nature of autofluorescent nanoporous Zn-MOF nanoparticles possessing exceptional thermal and chemical stability for the detection of wide-range pH (1 to 11) and temperature (micro, -15 degrees C to +50 degrees C; and macro, up to +400 degrees C). The fluorescent switch on-off response was observed at basic and acidic pH, respectively, which is correlated with the quantum yield and lifetime dual-read out process. On the other hand, intramolecular charge transfer and rotation or nonradiative decay play a prominent role for temperature sensing. The mechanism of pH sensing has been established by an acidic TNP-sensing experiment at different pH. The macro range temperature is monitored by fluorescence microscopy in the DAPI and FITC region. To the best of our knowledge, this is the first example of a dual-responsive luminescent probe for both pH and temperature sensing.
引用
收藏
页码：9480 / 9486
页数：7
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