A new transparent hybrid film obtained from lanthanide complex Tb/Eu–TPTZ incorporated in PMMA was designed for its potential use as luminescent thermometer and visual temperature sensor. The structure of the lanthanide complexes was numerically confirmed in a gas phase through the density functional theory (DFT). The hybrid film excited with 310 nm at RT showed a greenish-yellow color and was associated with the mix of the typical emission bands of the Tb³⁺ and Eu³⁺ ions incorporated in the film. The temperature-dependent photoluminescence properties of the (Tb/Eu-TPTZ)PMMA film were analyzed in the range of 25–120 °C. The integrated areas of the transition bands ⁵D₄ → ⁷F₅ (Tb³⁺), and ⁵D₀ → ⁷F₂ (Eu³⁺) were used in the ratiometric technique based on the fluorescence intensity ratio (FIR). In the temperature range 25−100 °C, the thermometric parameter showed good linear (R² = 0.997) behavior and a value for the relative sensitivity S_r of 2.98 % °C⁻¹. A color change was observed for the hybrid film, going from greenish-yellow to red when the temperature changed from 25–100 °C. The results suggest that (Tb/Eu–TPTZ)PMMA film has promising characteristics to be considered as a luminescent thermometer and visual temperature sensor in the range of 25–100 °C.

从掺入PMMA的镧系元素Tb / Eu-TPTZ中获得了一种新的透明杂化膜，其潜在用途是用作发光温度计和视觉温度传感器。镧系元素配合物的结构在气相中通过密度泛函理论（DFT）进行了数值确定。在室温下以310 nm激发的杂化膜显示出黄绿色，并且与掺入膜中的Tb ³⁺和Eu ³⁺离子的典型发射带的混合相关。（Tb / Eu-TPTZ）PMMA薄膜的温度依赖性光致发光特性在25–120°C的范围内进行了分析。过渡带⁵ D ₄ → ⁷ F ₅（Tb³⁺）和⁵ D ₀ → ⁷ F ₂（Eu ³⁺）用于基于荧光强度比（FIR）的比例技术。在25-100°C的温度范围内，测温参数显示出良好的线性（R ²  = 0.997）行为，相对灵敏度S _r的值为2.98％C ^-1。当温度从25–100°C改变时，混合膜会发生颜色变化，从绿黄色变为红色。结果表明，（Tb / Eu–TPTZ）PMMA膜在25–100°C的范围内具有发光温度计和可视温度传感器的潜力。