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A new type of organic manganese halide with reversible fluorescence, temperature response


Hệ thống cảnh báo nhiệt độ tương thích với thủy tinh và tự cấp nguồn bằng halogenua mangan hữu cơ đáp ứng nhiệt độ thông qua năng lượng ngược

Self-powered temperature warning system powered by luminescent solar concentrators based on a single green emitting PEA2MnBr2I2 with reverse energy transfer. Credit: Energy Chemistry Magazine (In 2022). DOI: 10.1016 / j.jechem.2022.09.036

With the development of IoT technology, the need to integrate low-power electronic devices with power supply modules is increasing rapidly to develop more new self-powered devices. As members of the family of power supplies or photonic devices, luminescent solar concentrators (LSCs) are important additions to existing photovoltaic systems and represent potential advantages in self-powered building.

In addition, the LSC can drive a number of low power consumption devices and is also an excellent candidate for self-powered devices. Recently, several practical applications based on LSCs have been reported, such as LSC greenhouses, visible light communication and noise shielding. However, there are few reports regarding the integration of low power consumption devices with LSC. Some pioneering work is still required to demonstrate the application of LSC on self-powered smart products.

Recently, Shuhong Xu and Chunlei Wang of Southeast University and colleagues published a manuscript titled “Compatible and self-powered glasses temperature alarm system with temperature-responsive organic manganese halides through “back energy transfer” in Energy Chemistry Magazine.

In this paper, the authors present a new type of single-player PEA2MnBr2I2 organic manganese halide (OMH) with reversible temperature-reactive fluorescence through an energy reverse transfer from the self-trapped state to the 4BILLIONfirst energy level of Mn2+.

Such OMHs show 4-fold enhanced PL intensity between 303 and 393 K, can satisfy the need of temperature sensing in daily life situations, and are available to design temperature alarms “Turn off”. More importantly, such OMHs do not show any spectral overlap with the LSCs, which avoids the problem of calibration error caused by interference between the heat-responsive signal light and the emission. of LSCs. Furthermore, it also simplifies the temperature calibration system where a simple low power consumption circuit based on photoresist is required instead of a complex spectrophotometer system.

Based on temperature-responsive OMHs and LSCs, the first self-powered temperature alarm system on a glass substrate is built. It can calibrate temperature visually with LED indicator and its actual operation is done in ambient light.


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More information:
Pengfei Xia et al., Glass-compatible and self-powered Temperature Warning System with temperature-responsive organic manganese halides through reverse energy transfer, Energy Chemistry Magazine (In 2022). DOI: 10.1016 / j.jechem.2022.09.036

Quote: A novel temperature-responsive, reversible fluorescence organic manganese halide (2022, October 20) retrieved October 20, 2022 from https://techxplore.com/news/2022-10 -manganese-halide-reversible-tempether-responsive-fluorescence.html

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