Luminescent MOF crystals embedded in PMMA/PDMS transparent films as effective NO<sub>2</sub> gas sensors

Moscoso, Francisco G.; Almeida, José; Sousaraei, Ahmad; Lopes-Costa, Tânia; Silva, Ana M. G.; Cabanillas‐González, Juan; Cunha‐Silva, Luís; Pedrosa, José M.

doi:10.1039/c9me00164f

Cited by 42 publications

(30 citation statements)

References 45 publications

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“…To the best of our knowledge, gases such as O 2 , NO 2 , NH 3 , and SO 2 have been detected by lanthanide-based LMOF sensors. [67][68][69][70] One such use of a lanthanide-based LMOF sensor was reported by Dou et al to sense O 2 gas. [68] ).…”

Section: Luminescent Mofsmentioning

confidence: 99%

“…To the best of our knowledge, gases such as O 2 , NO 2 , NH 3 , and SO 2 have been detected by lanthanide‐based LMOF sensors. [ 67–70 ] One such use of a lanthanide‐based LMOF sensor was reported by Dou et al to sense O 2 gas. [ 68 ] Dou et al showed two indium trimesate MOFs, [(CH 3 )2NH 2 ][In 3 O(BTC)2(H 2 O) 3 ]2[In 3 (BTC) 4 ] (CPM‐5) and In 3 O(OH)(H 2 O)2[BTC]2 (MIL‐100(In)), that are functionalized with terbium ions (Tb +3 ).…”

Section: Optical Sensorsmentioning

confidence: 99%

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Optoelectronic Gas Sensing Platforms: From Metal Oxide Lambda Sensors to Nanophotonic Metamaterials

Perkins

Gholipour

2021

Advanced Photonics Research

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Gas sensing technology platforms have allowed for the improvement of crucial industrial processes and the decreased emissions of environmentally harmful gases that have led to deleterious outcomes. Industries where gas control has become critical are petrochemical, refinery, food and beverage, and power generation. These industries utilize gases such as ethylene, sulfur, carbon dioxide (CO 2 ), and oxygen (O 2 ) to produce gasoline, carbonated beverages, and electricity. [1] During various processes, harmful gases such as carbon monoxide (CO), CO 2 , sulfur dioxide (SO 2 ), and nitrogen dioxide (NO 2 ) and volatile organic compounds (VOCs) such as ethanol (C 2 H 5 OH), acetone (CH 3 COCH 3 ), toluene (C 7 H 8 ), and acetylene (C 2 H 2 ) can be emitted. [2][3][4][5][6] The emission of these environmentally toxic gases and VOCs from both industrial processes and automobiles has been linked to the nitrous oxides (NO x ), CO, and hydrocarbon emissions responsible for acid rain in the 1960s. Legislation was introduced to address and mitigate this acidic precipitation and the emission of environmentally toxic gasses by requiring the use of gas sensors and catalytic converters. [2] Gas sensing technology can be found in two leading commercial platforms: electronic (lambda sensors) and optical (nondispersive infrared (NDIR) sensors and optrodes). Lambda sensors are made with electrolytes or gas-sensitive films that exploit the ionic conductivity of electrolytes or the adsorption of gases and bonding of hydroxyl groups on metal oxide (MO) materials. State-of-the-art, automotive lambda sensors, also known as "automotive oxygen sensors," use a solid yttria-stabilized zirconia (YSZ) electrolyte in wideband sensor design geometries. The wideband sensor design was adapted from the early narrowband YSZ sensor design that utilized a simple Nernst cell. The wideband sensor design offers improved sensor linearity when compared to the narrowband designs across a wide range of air-to-fuel ratio values. Though the electrolytic lambda sensors' physical design has changed in previous years, the sensor has not seen an improvement in terms of electrolytic materials.Lambda sensors have also been based on gas-sensitive oxide films, instead of electrolytes, that employ the use of MO materials. MO materials include a wide range of oxidized transitional metals. These MOs undergo electronic changes when gases or VOCs are chemisorbed or bound to hydroxyl groups on the material's surface, thereby increasing or decreasing the MO's resistivity. The gas-material interaction only occurs at high temperatures, called the "activation temperatures," required by the MO.High activation temperatures are common in both electrolytic and MO gas sensors. Bringing the electrolytic and MO gas sensors to these high temperatures requires electronic heater elements. The reduction of the activation temperature of a lambda sensor can be achieved by using promoter materials and catalytic metals. Some material platforms, such as metal-organic frameworks (MOFs), are als...

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Section: Luminescent Mofsmentioning

confidence: 99%

Section: Optical Sensorsmentioning

confidence: 99%

Optoelectronic Gas Sensing Platforms: From Metal Oxide Lambda Sensors to Nanophotonic Metamaterials

Perkins

Gholipour

2021

Advanced Photonics Research

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“…O mesmo MOF, Tb(BTC), foi ainda imobilizado em filmes de PMMA/PDMS (polimetilmetacrilato/ polidimetilsiloxano) por spin coating, com obtenção de materiais que respondem com elevada sensibilidade ao gás NO 2 (por decaimento de fluorescência) [36]. Este MOF, quando comparado com outros materiais, tais como compósitos rosamina/TiO 2 [37] e rosamina/SiO 2 /TiO 2 [38], apresenta valores de t 50 (tempo de decaimento de 50% do valor máximo de luminescência) inferiores aos reportados, entre 1-8 min para uma gama de concentração de NO 2 entre 5-500 ppm.…”

Section: Sensores óTicos Baseados Em Redes Metalo-orgânicasunclassified

Sensores Óticos de Base Porfirínica para Aplicações Ambientais e Biomédicas

Rangel¹,

Silva²,

Queirós³

et al. 2020

BSPQuimica

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Porphyrin-based Optical Sensors for Environmental and Biomedical Applications. Porphyrins are tetrapyrrolic macrocycles, which are endowed with excellent photophysical and electrochemical properties. However, porphyrins often exhibit low stability and fluorescence quenching under physiological conditions, thus limiting their application in biomedical and environmental sciences. To overcome these limitations, porphyrins can be incorporated into metalorganic frameworks (MOFs), opening new avenues for high-performance materials that integrate the specific physicochemical properties of porphyrins and MOFs, with a wide range of applications, from selective storage of gases, catalysis, to detection of different chemical substances. In this article several examples of porphyrin-based optical sensors are described, addressing the MOFs preparation to porphyrinic MOFs. The detection mechanisms and possible practical applications of the developed systems will also be discussed.

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“…Fluorescent films composed of π-conjugated materials-based fluorescent sensors and membranous materials are promising sensor technology due to their real-time detection, easy fabrication, noninvasiveness detection, and mechanical stability and flexibility (Guan et al, 2015;Miao et al, 2016). In recent years, they have been widely used in detecting residual pesticides (Peng et al, 2021), enzymes (Zhao et al, 2017a;Zhao et al, 2017b), pollutants (Lee et al, 2019;Zhao et al, 2020b;Sun et al, 2021), explosives (Zhou et al, 2014;Sun et al, 2015;Li et al, 2018;Hao et al, 2021), metal ions (Chen et al, 2020), gases (Moscoso et al, 2020), and temperature and humidity (Jiang et al, 2020;Li et al, 2020), which greatly expanded the applications of fluorescence sensors. Generally, high selectivity and sensitivity are the key characteristics of a successful membranous fluorescent sensor (Sun et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Design and Synthesis of AIE-Based Small-Molecule and Nanofibrous Film for Fluorescent Sensing Application

Zhang

et al. 2021

Front. Chem.

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Fluorescent sensors that respond to environmental conditions (temperature, pressure, and pH) have attracted widespread attention in recent years. Generally, traditional solid-state fluorescent materials tend to suffer from aggregation-induced quenching (ACQ) and difficulty of film forming, limiting their extensive applications. Therefore, researchers are focusing more and more attention on fluorescent sensors with aggregation-induced emission (AIE) effects. Herein, the article reports an AIE molecule (TPEBZMZ) containing tetraphenylethylene (TPE) and benzimidazole fragments. The fluorescence properties of TPEBZMZ in solution and aggregation states have been investigated, and the luminescence performance and aggregation structures of solid-state TPEBZMZ after force and acid treatments have been explored. The results show obvious AIE and fluorescent sensing properties of TPEBZMZ, presenting force- and acid-induced discolorations. Moreover, the TPEBZMZ-based fluorescent nanofibrous film is fabricated by electrospinning the solution of TPEBZMZ blended with polylactic acid (PLA), which shows a good nanofiber film structure and exhibits reversible acid-induced discoloration property, even with only 0.5 wt% TPEBZMZ. This work provides a simple strategy to achieve stimulus-responsive fluorescent film.

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Luminescent MOF crystals embedded in PMMA/PDMS transparent films as effective NO₂ gas sensors

Abstract: Transparent polymeric matrices serve as efficient platforms to immobilize Tb(BTC) crystals whose fluorescence is quenched in the presence of NO2.

Cited by 42 publications

References 45 publications

Optoelectronic Gas Sensing Platforms: From Metal Oxide Lambda Sensors to Nanophotonic Metamaterials

Optoelectronic Gas Sensing Platforms: From Metal Oxide Lambda Sensors to Nanophotonic Metamaterials

Sensores Óticos de Base Porfirínica para Aplicações Ambientais e Biomédicas

Design and Synthesis of AIE-Based Small-Molecule and Nanofibrous Film for Fluorescent Sensing Application

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Luminescent MOF crystals embedded in PMMA/PDMS transparent films as effective NO2 gas sensors

Abstract: Transparent polymeric matrices serve as efficient platforms to immobilize Tb(BTC) crystals whose fluorescence is quenched in the presence of NO2.

Cited by 42 publications

References 45 publications

Optoelectronic Gas Sensing Platforms: From Metal Oxide Lambda Sensors to Nanophotonic Metamaterials

Optoelectronic Gas Sensing Platforms: From Metal Oxide Lambda Sensors to Nanophotonic Metamaterials

Sensores Óticos de Base Porfirínica para Aplicações Ambientais e Biomédicas

Design and Synthesis of AIE-Based Small-Molecule and Nanofibrous Film for Fluorescent Sensing Application

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Product

Resources

About

Luminescent MOF crystals embedded in PMMA/PDMS transparent films as effective NO₂ gas sensors