A novel fluorescence probe for sensing organic amine vapors from a Eu3+β-diketonate functionalized bio-MOF-1 hybrid system

2015 ◽  
Vol 3 (27) ◽  
pp. 7038-7044 ◽  
Author(s):  
Xiang Shen ◽  
Bing Yan

A classic anionic metal–organic framework (bio-MOF-1) for Eu3+-β-diketonate complex encapsulation has the utility of a sensory material for sensing volatile organic molecules, especially volatile amines.

RSC Advances ◽  
2014 ◽  
Vol 4 (73) ◽  
pp. 38761-38768 ◽  
Author(s):  
X. Y. Xu ◽  
B. Yan

Multi-component sol–gel derived alumina and titania hybrid materials are assembled by the functionalization of both lanthanide complexes and a special metal organic framework compound: Al-MIL-53-COOH through coordination bonds. Multi-color luminescence and white colored light can be tuned by controlling the different units in the hybrid system.


Sensors ◽  
2021 ◽  
Vol 21 (4) ◽  
pp. 1420
Author(s):  
Chenyang He ◽  
Liangliang Liu ◽  
Sergiy Korposh ◽  
Ricardo Correia ◽  
Stephen P. Morgan

A tip-based fibreoptic localised surface plasmon resonance (LSPR) sensor is reported for the sensing of volatile organic compounds (VOCs). The sensor is developed by coating the tip of a multi-mode optical fibre with gold nanoparticles (size: 40 nm) via a chemisorption process and further functionalisation with the HKUST-1 metal–organic framework (MOF) via a layer-by-layer process. Sensors coated with different cycles of MOFs (40, 80 and 120) corresponding to different crystallisation processes are reported. There is no measurable response to all tested volatile organic compounds (acetone, ethanol and methanol) in the sensor with 40 coating cycles. However, sensors with 80 and 120 coating cycles show a significant redshift of resonance wavelength (up to ~9 nm) to all tested volatile organic compounds as a result of an increase in the local refractive index induced by VOC capture into the HKUST-1 thin film. Sensors gradually saturate as VOC concentration increases (up to 3.41%, 4.30% and 6.18% in acetone, ethanol and methanol measurement, respectively) and show a fully reversible response when the concentration decreases. The sensor with the thickest film exhibits slightly higher sensitivity than the sensor with a thinner film. The sensitivity of the 120-cycle-coated MOF sensor is 13.7 nm/% (R2 = 0.951) with a limit of detection (LoD) of 0.005% in the measurement of acetone, 15.5 nm/% (R2 = 0.996) with an LoD of 0.003% in the measurement of ethanol and 6.7 nm/% (R2 = 0.998) with an LoD of 0.011% in the measurement of methanol. The response and recovery times were calculated as 9.35 and 3.85 min for acetone; 5.35 and 2.12 min for ethanol; and 2.39 and 1.44 min for methanol. The humidity and temperature crosstalk of 120-cycle-coated MOF was measured as 0.5 ± 0.2 nm and 0.5 ± 0.1 nm in the humidity range of 50–75% relative humidity (RH) and temperature range of 20–25 °C, respectively.


2021 ◽  
Vol 9 (9) ◽  
pp. 2233-2239
Author(s):  
Adrià Botet-Carreras ◽  
Cristina Tamames-Tabar ◽  
Fabrice Salles ◽  
Sara Rojas ◽  
Edurne Imbuluzqueta ◽  
...  

Despite the interesting chemopreventive, antioxidant and antiangiogenic effects of the natural bioflavonoid genistein (GEN), its low aqueous solubility and bioavailability make it necessary to administer it using a suitable drug carrier system.


2020 ◽  
Vol 382 ◽  
pp. 122920 ◽  
Author(s):  
Sewoon Kim ◽  
Juan C. Muñoz-Senmache ◽  
Byung-Moon Jun ◽  
Chang Min Park ◽  
Am Jang ◽  
...  

Nanoscale ◽  
2019 ◽  
Vol 11 (19) ◽  
pp. 9468-9477 ◽  
Author(s):  
Xu Zhang ◽  
Lizhi Liu ◽  
Lunjie Huang ◽  
Wentao Zhang ◽  
Rong Wang ◽  
...  

Highly efficient elimination of intracellular bacteria via a hyaluronic acid-functionalized metal organic framework(MOF)/antibiotic system.


2019 ◽  
Vol 7 (43) ◽  
pp. 25165-25171 ◽  
Author(s):  
Xiao-Min Li ◽  
Jiang Liu ◽  
Chen Zhao ◽  
Jia-Lin Zhou ◽  
Ling Zhao ◽  
...  

An efficient strategy to hierarchically improve the proton conductivity of MOFs by increasing the number of proton sources and hopping sites has been proposed.


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