Structure and Properties of PET Nano‐Porous Luminescence Fibers for Fluorescence‐Indicating to Acid Gases

Shu, Dengkun; Xi, Peng; Xia, Ling; Wang, Xiaoqing; Cheng, Bowen

doi:10.1002/mame.201900467

Cited by 6 publications

(5 citation statements)

References 51 publications

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“…[38] The results showed that H + could catalyze the ligand, and the coordination mode of BTA with rare earth ions changed from the original chelating bidentate coordination to monodentate coordination mode, which reduced the energy transfer efficiency between the ligand and rare earth ions. [39]…”

Section: Acid Rain Detection Mechanismmentioning

confidence: 99%

Ethyl Cellulose/Rare Earth Complexes Light‐Conversion Films and Exploration in Acid Rain Detection

Zhang

et al. 2021

Macro Materials & Eng

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Generally, precipitation with pH less than 5.6 is considered acid rain, which will have adverse effects on water, soil, animals, and plants, etc, therefore, rapid detection of acid rain is of great significance. In this work, the rare earth europium is combined with 4,4,4-trifluoro-1-phenyl-1,3-butanedione to obtain the Eu 3+ complex, Eu(BTA) 3 (H 2 O) 2 . As an auxiliary ligand and matrix, ethyl cellulose avoided the fluorescence quenching caused by uneven dispersion of the complex in the matrix and while sensitizing the fluorescence of Eu 3+ . The rare earth complex light-conversion film is successfully prepared. The results showed that the film has good responsiveness to pH value. In the process of neutral to acidic aqueous solution, the fluorescence is gradually quenched and exhibits a good linear relationship, when the aqueous solution changed from acid to neutral, the fluorescence will be restored, and the fluorescence intensity can still maintain above 90% after 5 repetitions. In addition, the light-conversion film has excellent light conversion ability and high color purity. It can transform harmful ultraviolet light into red light which is conducive to photosynthesis, as well as prevent damage of acid rain to plants and has a certain positive effect on agricultural production.

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Section: Acid Rain Detection Mechanismmentioning

confidence: 99%

Ethyl Cellulose/Rare Earth Complexes Light‐Conversion Films and Exploration in Acid Rain Detection

Zhang

et al. 2021

Macro Materials & Eng

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“…When the fibers are used in medical products, direct γ-ray disinfection will not destroy the physical properties and stability of the fibers. 10 The excellent properties of PET fibers enable it to be widely used in industry, agriculture, aerospace, masks, and other fields. 11−14 In antibacterial PET fibers, the antibacterial agent used determines the preparation method and the antibacterial effect of antibacterial fibers.…”

Section: ■ Introductionmentioning

confidence: 99%

“…More importantly, PET fibers have the capacity to resist γ-rays. When the fibers are used in medical products, direct γ-ray disinfection will not destroy the physical properties and stability of the fibers . The excellent properties of PET fibers enable it to be widely used in industry, agriculture, aerospace, masks, and other fields. − …”

Section: Introductionmentioning

confidence: 99%

Preparation and Application of High-Efficiency, Antibacterial, and Antiviral PET–PTHP Fibers

He,

Shi,

et al. 2023

ACS Appl. Mater. Interfaces

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Transmission through the respiratory tract is one of the most important ways for bacteria and viruses to infect the human body; the use of high-performance antibacterial and antiviral protective equipment is the most effective way to prevent the spread of respiratory diseases. However, at present, most personal protective equipment lacks the ability to kill pathogens. In this paper, a kind of polytetrahydropyrimidine−polyethylene terephthalate functional fiber (PET−PTHP fibers) with highly sustained antibacterial and antiviral properties was prepared. The inactivation rate of the fibers against Staphylococcus aureus and Escherichia coli was as high as 99.99%, and the antibacterial time was more than 72 h. The fibers have an obvious destructive effect on lentiviruses and can reduce the infection rate of lentiviruses in BxPC-3 cells from 25.4 to 9.7%. The cytotoxicity test, cell live/dead staining test, and cell proliferation test all confirmed that PET−PTHP fibers have no obvious cytotoxicity and good cytocompatibility. By applying the functional fibers to the inner layer of the masks, a new type of mask with adsorption, filtration, and killing properties against pathogens was prepared. The filtration efficiency of the new masks was 99.3%, and the pressure drop was 104 Pa. The new masks have excellent air permeability and filtration effect, meet the practical application conditions, and are of grade A; therefore, these masks provide medical protection as well as kill pathogens at the same time, further reducing the risk of human infection.

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“…With the gradual development of chemical industry, a large number of polluted gases are produced, which are discharged into the atmosphere and endanger people's health 1–3 . Acid gases (such as HCl, TFA, FA and SO 2 are widely used in all walks of life) account for a large proportion of harmful gases 4 . However, it is necessary to take convenient precautions in the gas state, because the gas is colorless, and it will quickly spread undetected in case of leakage 5–7 .…”

Section: Introductionmentioning

confidence: 99%

“…Among the methods for monitoring acid gases, nano‐fluorescent materials show obvious advantages due to their large specific surface area and high adsorption capacity. For example, Chen et al 4 used polyethylene terephthalate (PET) to prepare nano‐porous luminescent fiber PNPLFs by electrospinning. Porous structure and large specific surface area endowed PNPLFs with strong adhesion to acid gas and good absorption efficiency.…”

Section: Introductionmentioning

confidence: 99%

Preparation of recyclable fluorescent electrospinning films and their application in distinguishing and quantitatively analyzing acid gases

Zhang

et al. 2022

Polymers for Advanced Techs

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Acid gas, as a kind of polluting gas, poses a great threat to human health. Therefore, there is a need for a material that can detect it, and it is of great significance to find and deal with acid gas leakage in time. In this paper, the fluorescent micromolecule NAP‐OH, a naphthalimide derivative modified by morpholine, was introduced into polyurethane as an end‐capping agent, and the prepared nanometer fluorescent sensing material E‐NAP0.5/PU by electrospinning technology exhibited a sensitive ratiometric fluorescence response behavior to acid gas. The E‐NAP0.5/PU's specific surface area was 9.142 m2/g and its diameter was 200–400 nm. In 6 ppm HCl gas, TFA and FA gases, the response time of E‐NAP0.5/PU (deep orange red) films were 2, 20, and 40 s, and the colors were green, light green and light orange‐red, respectively. This showed that the membrane has great potential application in distinguishing acid gases. In addition, the E‐NAP0.5/PU changed from orange‐red to colorless within 30 s in SO2 gas with a concentration of 360 ppm. The detection limits of E‐NAP0.5/PU for HCl, TFA, FA and SO2 gases were 996 ppb (0–10 ppm), 660 ppb (0–8 ppm), 724 ppb (0–10 ppm) and 39 ppm (0–360 ppm), respectively. More importantly, E‐NAP0.5/PU could be reused multiple times. After five times of recovery, the E‐NAP0.5/PU film still recovered to its original fluorescence intensity, and kept a good response to acid. The 1H NMR and fluorescence spectra results indicated that the possible mechanism for acid gas detection of NAP‐OH was attributed to the protonation of morpholine group. To sum up, E‐NAP0.5/PU had a broad application prospect in acid gas detection.

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Structure and Properties of PET Nano‐Porous Luminescence Fibers for Fluorescence‐Indicating to Acid Gases

Cited by 6 publications

References 51 publications

Ethyl Cellulose/Rare Earth Complexes Light‐Conversion Films and Exploration in Acid Rain Detection

Ethyl Cellulose/Rare Earth Complexes Light‐Conversion Films and Exploration in Acid Rain Detection

Preparation and Application of High-Efficiency, Antibacterial, and Antiviral PET–PTHP Fibers

Preparation of recyclable fluorescent electrospinning films and their application in distinguishing and quantitatively analyzing acid gases

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