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Integrating Positive and Negative Thermal Quenching Effect for Ultrasensitive Ratiometric Temperature Sensing and Anti-counterfeiting
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2021-05-11 , DOI: 10.1021/acsami.1c05611 Yubin Wang 1 , Lei Lei 1 , Renguang Ye 1 , Guohua Jia 2 , Youjie Hua 1 , Degang Deng 1 , Shiqing Xu 1
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2021-05-11 , DOI: 10.1021/acsami.1c05611 Yubin Wang 1 , Lei Lei 1 , Renguang Ye 1 , Guohua Jia 2 , Youjie Hua 1 , Degang Deng 1 , Shiqing Xu 1
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Fluorescence intensity ratio-based temperature sensing with a self-referencing characteristic is highly demanded for reliable and accurate sensing. Although enormous efforts have been devoted to explore high-performance luminescent temperature probes, it remains a daunting challenge to achieve highly relative sensitivity which determines temperature resolution. Herein, we employ a novel strategy to achieve temperature probes with ultrahigh relative sensitivity through integrating both positive and negative thermal quenching effect into a hydrogel. Specifically, Er3+ ions show evidently a positive thermal quenching effect in Yb/Er:NaYF4@NaYF4 nanocrystals while Nd3+ and Tm3+ ions in a Yb2W3O12 bulk exhibit prominently a negative thermal quenching effect. With elevating temperature from 313 to 553 K, the fluorescence intensity ratio of Er (540 nm) to Nd (799 nm) and Tm (796 nm) to Er (540 nm) is significantly decreased about 1654 times and increased about 14,422 times, respectively. The maximum relative sensitivity of 15.3% K–1 at 553 K and 23.84% K–1 at 380 K are achieved. The strategy developed in this work sheds light on highly sensitive probes using lanthanide ion-doped materials.
中文翻译：
集成正负热猝灭效应，实现超灵敏的比例温度感测和防伪
为了可靠，准确地进行感测，强烈要求具有自参考特性的基于荧光强度比的温度感测。尽管已投入大量精力来探索高性能的发光温度探头，但要实现决定温度分辨率的高相对灵敏度仍然是一项艰巨的挑战。本文中，我们采用一种新颖的策略，通过将正负热猝灭效应整合到水凝胶中来实现具有超高相对灵敏度的温度探针。具体而言，Er 3+离子在Yb / Er：NaYF 4 @NaYF 4纳米晶体中表现出明显的正热猝灭作用，而Nb 3+和Tm 3+离子在Yb 2中表现出正的热猝灭作用。W 3 O 12块显着地表现出负的热淬灭作用。随着温度从313 K升高到553 K，Er（540 nm）对Nd（799 nm）和Tm（796 nm）对Er（540 nm）的荧光强度比分别降低了约1654倍和增加了约14,422倍。在553 K时，最大相对灵敏度为15.3％K –1；在380 K时，最大相对灵敏度为23.84％K –1。这项工作中开发的策略为使用镧系离子掺杂材料的高灵敏探针提供了启示。
更新日期：2021-05-26
中文翻译：
集成正负热猝灭效应，实现超灵敏的比例温度感测和防伪
为了可靠，准确地进行感测，强烈要求具有自参考特性的基于荧光强度比的温度感测。尽管已投入大量精力来探索高性能的发光温度探头，但要实现决定温度分辨率的高相对灵敏度仍然是一项艰巨的挑战。本文中，我们采用一种新颖的策略，通过将正负热猝灭效应整合到水凝胶中来实现具有超高相对灵敏度的温度探针。具体而言，Er 3+离子在Yb / Er：NaYF 4 @NaYF 4纳米晶体中表现出明显的正热猝灭作用，而Nb 3+和Tm 3+离子在Yb 2中表现出正的热猝灭作用。W 3 O 12块显着地表现出负的热淬灭作用。随着温度从313 K升高到553 K，Er（540 nm）对Nd（799 nm）和Tm（796 nm）对Er（540 nm）的荧光强度比分别降低了约1654倍和增加了约14,422倍。在553 K时，最大相对灵敏度为15.3％K –1；在380 K时，最大相对灵敏度为23.84％K –1。这项工作中开发的策略为使用镧系离子掺杂材料的高灵敏探针提供了启示。
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