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A temperature monitoring material based on triplet-triplet annihilation up-conversion luminescence

A technology of triplet and fluorescent dyes, which is applied in the field of temperature sensing, can solve the problems of low thermal sensitivity temperature resolution and low luminous quantum efficiency, and achieve the effect of ensuring accuracy and small volume

Active Publication Date: 2018-09-14
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the upconversion luminescence quantum efficiencies of these rare-earth nanocrystal-based temperature probes are generally low (–1 ) and temperature resolution (>0.5K) are also generally at a low level

Method used

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  • A temperature monitoring material based on triplet-triplet annihilation up-conversion luminescence
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  • A temperature monitoring material based on triplet-triplet annihilation up-conversion luminescence

Examples

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Embodiment 1

[0042] Example 1: Nano temperature monitoring material based on triplet-triplet annihilation upconversion luminescence

[0043] The temperature monitoring material includes a temperature sensitivity response part and a temperature calibration part, wherein the temperature sensitivity response part is an upconversion luminescence system based on triplet-triplet annihilation composed of a sensitizer and an annihilation agent, and the temperature calibration part is composed of a reference system composition.

[0044] The sensitizer is platinum tetraphenylbenzoporphyrin (PtTPBP);

[0045] The annihilation agent is the fluoroboron dipyrrole derivative (BDM) after rotation inhibition;

[0046] As a reference system, rare earth nanocrystals doped with neodymium (NaYF 4 :5% Nd).

[0047] The molar ratio of sensitizer to annihilation agent is 1:10. The mass ratio of the up-conversion luminescent system based on triplet-triplet annihilation to the reference system is 1:7.

[0048]...

Embodiment 2

[0057] Example 2: Nano temperature monitoring material based on triplet-triplet annihilation upconversion luminescence

[0058] The temperature monitoring material includes a temperature sensitivity response part and a temperature calibration part, wherein the temperature sensitivity response part is an upconversion luminescence system based on triplet-triplet annihilation composed of a sensitizer and an annihilation agent, and the temperature calibration part is composed of a reference system composition.

[0059] In Example 1, the up-conversion luminescent system based on triplet-triplet annihilation exhibits highly sensitive temperature response properties. In this example 2, the temperature sensitive response part still uses the up-conversion luminescence system based on triplet-triplet annihilation, and at the same time expands the types of the system, using porphyrin complexes as sensitizers, and using acene Anthracene compounds act as annihilation agents.

[0060] The...

Embodiment 3

[0067] Example 3: Nano temperature monitoring material based on triplet-triplet annihilation upconversion luminescence

[0068] The temperature monitoring material includes a temperature sensitivity response part and a temperature calibration part, wherein the temperature sensitivity response part is an upconversion luminescence system based on triplet-triplet annihilation composed of a sensitizer and an annihilation agent, and the temperature calibration part is composed of a reference system composition.

[0069] In Example 1 and Example 2, the upconversion luminescence system based on triplet-triplet annihilation all exhibited highly sensitive temperature response properties, confirming that the upconversion luminescence system of triplet-triplet annihilation is a common and effective Temperature-sensitive materials in the foreground. In this Example 3, the temperature sensitive response part still uses the up-conversion luminescent system based on triplet-triplet annihila...

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Abstract

The invention belongs to the field of temperature sensing and specifically provides a temperature monitoring material based on triplet-triplet annihilation up-conversion luminescence. The material comprises a temperature sensitivity response part and a temperature calibration part. The temperature sensitivity response part is based on a triplet-triplet annihilation up-conversion luminescence system and mainly comprises a sensitizer and an annihilation agent. The temperature calibration part mainly comprises a reference system. Light-emitting signals of the triplet-triplet annihilation up-conversion luminescence system are enhanced with the rise of temperature and light-emitting signals of the reference system are weakened or kept the same with the rise of temperature , so that a temperature change process of a biological body can be dynamically monitored based on the ratio value of the two light-emitting signals through real-time measurement of the light-emitting signals. The application of up-conversion light-emitting materials to temperature monitoring, imaging, physiological medical research in cells or biological bodies can be promoted.

Description

technical field [0001] The invention belongs to the field of temperature sensing, specifically a material capable of monitoring the temperature in a living body based on a triplet-triplet annihilation upconversion luminescence mechanism, and relates to the preparation of a ratio composite material and its temperature monitoring method. Background technique [0002] Temperature is a basic state parameter of matter, and accurate measurement of temperature is of great significance to many scientific researches. Especially for a living system, its temperature change is usually related to the functions of many life activities. By monitoring the temperature change in the body, some important life processes can be revealed. Optical imaging, which can detect signals non-contact and non-destructively, is a common method for temperature monitoring in living organisms. Among them, fluorescence imaging has attracted special attention and research because of its high resolution, short c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K11/20
CPCG01K11/20
Inventor 李富友徐明冯玮
Owner FUDAN UNIV
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