Recyclable Time–Temperature Indicator Enabled by Light Storage in Particles

Song, Yan-Kui; Du, Jiaren; Yang, Ren; Lin, Cunjian; Chen, Wenjing; Wu, Zishuang; Lin, Hengwei; Chen, Xi; Zhuang, Yixi; Xie, Rong‐Jun

doi:10.1002/adom.202202654

Cited by 19 publications

(10 citation statements)

References 62 publications

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“…The signal strength of the PSL gradually decreases with the increased excitation time, indicating that the PSL could read the stored information in a controlled and accurate manner. [ 23–25 ] The intensity of the TL peaks at 458 and 531 K was significantly enhanced at the Cs + ions doping concentration of 0.02, which was 5.8 times higher than that of NLFT NCs (Figure 2d). By continually increasing the concentration of Cs + ions, the TL intensity is dropped because of the gradual increase of the lattice deformation that leads to the drop in luminescence performance.…”

Section: Resultsmentioning

confidence: 96%

Precision X‐Ray Time‐Lapse Flexible Imaging from Fluoride Nanocrystals with the Constructed Deep Traps

Peng,

Chen,

et al. 2023

Advanced Optical Materials

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X‐ray time‐lapse imaging allows for precise radiographic imaging of the item after X‐ray has been terminated, which is important for simplifying legacy X‐ray detectors and avoiding health hazards caused by ionizing radiation during the imaging process. However, the premature discharge of carriers from shallow traps at room temperature over time leads to the loss of imaging information, making an accurate representation of the recorded information to achieve accurate time‐lapse imaging still a challenge. Here, it is demonstrated that monodispersed NaLuF4: Tb3+ nanocrystals with the replacement of Na+ by Cs+ ions in the lattice matrix realize a superior X‐ray time‐lapse imaging. It is found that the incorporation of Cs+ ions amplifies the deep trap storage capacity, which ensures the stable presence of carriers under thermal perturbation at room temperature. Imaging information with a spatial resolution of 12.0 lp mm−1 can be accurately represented even after the irradiation of the X‐ray has been terminated for 192 h. X‐ray time‐lapse imaging not only allows accurate reading of long‐term stored imaging information but also endows the visualization of X‐ray imaging independent of the dangerous radiation, which will offer great opportunities for X‐ray inspection on a larger scale.

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Section: Resultsmentioning

confidence: 96%

Precision X‐Ray Time‐Lapse Flexible Imaging from Fluoride Nanocrystals with the Constructed Deep Traps

Peng,

Chen,

et al. 2023

Advanced Optical Materials

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“…It is preferred for a TTI capable of providing not only monitoring thermal history but simultaneously monitoring relevant index with respect to food safety and freshness, for example, oxygen for vacuum packing foods, carbon dioxide for microbial metabolic products, 120 volatile base nitrogen for meat and seafood products, 121 From the perspective of sustainable development, environmental friendly and recyclable TTIs are recommended. 124,125 For instance, Song et al developed a light-storage-based TTI with excellent recyclability, reliability and environmental stability. 125 The operation easiness also influences the market acceptance and thus TTIs with mild storage conditions, simple (or no) activation and easy-to-read are popularized.…”

Section: Fruits and Vegetablesmentioning

confidence: 99%

“…TTIs that need no storage also can lower the cost. From the perspective of sustainable development, environmental friendly and recyclable TTIs are recommended 124,125 . For instance, Song et al developed a light‐storage‐based TTI with excellent recyclability, reliability and environmental stability 125 .…”

Section: Applications Of Ttismentioning

confidence: 99%

“…From the perspective of sustainable development, environmental friendly and recyclable TTIs are recommended 124,125 . For instance, Song et al developed a light‐storage‐based TTI with excellent recyclability, reliability and environmental stability 125 . The operation easiness also influences the market acceptance and thus TTIs with mild storage conditions, simple (or no) activation and easy‐to‐read are popularized.…”

Section: Applications Of Ttismentioning

confidence: 99%

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Principle, development and application of time–temperature indicators for packaging

Liu

et al. 2023

Packag Technol Sci

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Time–temperature indicators (TTIs) can visually reflect the remaining shelf life of various products, especially in cold chain transportation, by taking consideration of both time and temperature influences. Though various TTIs have been developed, few have been commercialized. This review aims at providing a timely reference to scientific community and valuable guidance for the future design of TTIs to boost the commercialization. This review firstly introduces the general principle and models for TTIs including key parameters of reaction rate constants, activation energies and activation energy matching. Then, four classical types of TTIs covering diffusion‐based, polymer‐based, enzyme‐based, and microbial TTIs are introduced regarding their working mechanisms, advantages and disadvantages as well as commercialized TTI products as examples. The development trend of TTI design and fabrication is highlighted from three categories including nanoparticles, electrospun nanofibers and printable inks. Furthermore, the review summarizes recent application of TTIs for monitoring the quality and safety of various products (meat, seafood, dairy, vaccines and fruits and vegetables). We also point our concerns from the perspective of safety, accuracy, multifunctionality and commercialization for the future development of TTIs.

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“…first reported a TTI label based on the storage effect of PersL materials, modeled on KZnF 3 :Mn 2+ with trap distributions ranging from 0.52 to 0.96 eV, in which the traps can capture carriers when charged with X‐ray and gradually release them in direct response to the temperature and time experienced. [ 21 ] This work opens a window to design advanced TTI labels with recyclability and higher environmental tolerance. Unfortunately, the evaluation of the residual carriers in the traps by means of thermoluminescence (TL) measurements poses some inconvenience because TL measurements require specialized equipment and expertise.…”

Section: Introductionmentioning

confidence: 99%

Optical Signals for Quantitative and Qualitative Monitoring of Temperature‐Sensitive Products

Zhu,

Yu,

Liu

et al. 2023

Advanced Optical Materials

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Monitoring the real‐time quality and validity of thermo‐sensitive foods during storage and transportation can be achieved with time‐temperature indicators (TTIs). However, the available TTIs still need to be improved in terms of accuracy, recoverability, environmental tolerance, and quantitative monitoring. Here, a novel TTI based on the optical signals originating from the as‐explored Sr3Y2Ge3O12: Mn2+, Er3+ (SYGO: Mn2+, Er3+) phosphor is developed. Thanks to the fact that the release of the captured carriers is tightly related to the storage time and ambient temperature, distinct optical signals of the as‐obtained TTI under multi‐stimulus (980 nm laser irradiation, thermal stimulation, and mechanical force) can be distinguished to judge the validity of temperature‐sensitive products. This work reveals the promising potential of SYGO: Mn2+, Er3+ phosphors with cryogenic optical storage properties as advanced TTIs, especially for packaged products in cold chain logistics.

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Recyclable Time–Temperature Indicator Enabled by Light Storage in Particles

Cited by 19 publications

References 62 publications

Precision X‐Ray Time‐Lapse Flexible Imaging from Fluoride Nanocrystals with the Constructed Deep Traps

Precision X‐Ray Time‐Lapse Flexible Imaging from Fluoride Nanocrystals with the Constructed Deep Traps

Principle, development and application of time–temperature indicators for packaging

Optical Signals for Quantitative and Qualitative Monitoring of Temperature‐Sensitive Products

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