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作为具有多色发射的发光比率温度计的一维之字形铕/铽配位链

1D-Zigzag Eu/Tb Coordination Chains as Luminescent Ratiometric Thermometers Endowed with Multicolor Emission.

作者信息

Bellucci Luca, Bottaro Gregorio, Labella Luca, Marchetti Fabio, Samaritani Simona, Belli Dell'Amico Daniela, Armelao Lidia

机构信息

Istituto di Chimica della Materia Condensata e di Tecnologie per l'Energia, Consiglio Nazionale delle Ricerche, ICMATE-CNR and INSTM, Dipartimento di Scienze Chimiche, Università di Padova, via Marzolo 1, I-35131 Padova, Italy.

Dipartimento di Chimica e Chimica Industriale and CIRCC, Università di Pisa, via Giuseppe Moruzzi 13, I-56124 Pisa, Italy.

出版信息

Materials (Basel). 2021 Oct 27;14(21):6445. doi: 10.3390/ma14216445.

DOI:10.3390/ma14216445
PMID:34771972
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8585447/
Abstract

Two homometallic Coordination Polymers (CPs) with composition [Ln(hfac)bipy] (Ln = Eu, , and Tb, ; hfac = hexafluoroacetylacetonato, bipy = 4,4'-bipyridine) were used to develop a family of ratiometric luminescent thermometers containing Eu and Tb as red and green emitters, respectively. The thermometric properties of pure CPs and of their mixtures having an Eu/Tb molar ratio of 1:1, 1:3, 1:5, and 1:10 (samples: , , , and ) were studied in the 83-383 K temperature range. Irrespective of the chemical composition, we observed similar thermometric responses characterized by broad applicative temperature ranges (from 100 to 165 K wide), and high relative thermal sensitivity values (S), up to 2.40% K, in the physiological temperature range (298-318 K). All samples showed emissions endowed with peculiar and continuous color variation from green (83 K) to red (383 K) that can be exploited to develop a colorimetric temperature indicator. At fixed temperature, the color of the emitted light can be tuned by varying composition and excitation wavelength.

摘要

两种组成为[Ln(hfac)bipy]（Ln = Eu、 以及Tb、 ；hfac = 六氟乙酰丙酮，bipy = 4,4'-联吡啶）的同金属配位聚合物（CPs）被用于开发一系列比率发光温度计，其中Eu和Tb分别作为红色和绿色发光体。在83 - 383 K温度范围内研究了纯CPs及其Eu/Tb摩尔比为1:1、1:3、1:5和1:10的混合物（样品： 、 、 和 ）的测温特性。无论化学成分如何，我们都观察到了相似的测温响应，其特点是适用温度范围宽（100至165 K），并且在生理温度范围（298 - 318 K）内具有高达2.40% K的高相对热灵敏度值（S）。所有样品的发射光都具有从绿色（83 K）到红色（383 K）的独特且连续的颜色变化，可用于开发比色温度指示器。在固定温度下，发射光的颜色可通过改变组成和激发波长来调节。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae25/8585447/294f5819de2b/materials-14-06445-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae25/8585447/125074a86c3d/materials-14-06445-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae25/8585447/c013daffe000/materials-14-06445-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae25/8585447/e2f1334ea24b/materials-14-06445-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae25/8585447/8ea817943d6f/materials-14-06445-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae25/8585447/6e52d3236035/materials-14-06445-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae25/8585447/9c484a0fb491/materials-14-06445-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae25/8585447/b85bb2306833/materials-14-06445-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae25/8585447/285ccbcdeee7/materials-14-06445-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae25/8585447/b672c54d7405/materials-14-06445-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae25/8585447/294f5819de2b/materials-14-06445-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae25/8585447/125074a86c3d/materials-14-06445-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae25/8585447/c013daffe000/materials-14-06445-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae25/8585447/e2f1334ea24b/materials-14-06445-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae25/8585447/8ea817943d6f/materials-14-06445-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae25/8585447/6e52d3236035/materials-14-06445-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae25/8585447/9c484a0fb491/materials-14-06445-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae25/8585447/b85bb2306833/materials-14-06445-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae25/8585447/285ccbcdeee7/materials-14-06445-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae25/8585447/b672c54d7405/materials-14-06445-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae25/8585447/294f5819de2b/materials-14-06445-g010.jpg

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