Multicolor Upconversion Luminescence from Core-shell Structured Nanoparticles

YU Fang-da; CHEN Huan; ZHAO Dan; QIN Guan-shi; QIN Wei-ping

doi:10.3788/fgxb20143502.0165

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Multicolor Upconversion Luminescence from Core-shell Structured Nanoparticles

更新时间：2020-08-12

- Multicolor Upconversion Luminescence from Core-shell Structured Nanoparticles
- Chinese Journal of Luminescence Vol. 35, Issue 2, Pages: 165-171(2014)
- 作者机构：
  
  吉林大学电子科学与工程学院集成光电子学国家重点联合实验室,吉林长春,130012
- 作者简介：
- 基金信息：
- DOI：10.3788/fgxb20143502.0165
  CLC： O482.31
- Received：10 October 2013，
  
  Revised：24 November 2013，
  
  Published：03 February 2014
- 稿件说明：
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于放达, 陈欢, 赵丹等. 利用核壳结构实现纳米颗粒的多色上转换发光[J]. 发光学报, 2014,35(2): 165-171

YU Fang-da, CHEN Huan, ZHAO Dan etc. Multicolor Upconversion Luminescence from Core-shell Structured Nanoparticles[J]. Chinese Journal of Luminescence, 2014,35(2): 165-171
于放达, 陈欢, 赵丹等. 利用核壳结构实现纳米颗粒的多色上转换发光[J]. 发光学报, 2014,35(2): 165-171 DOI： 10.3788/fgxb20143502.0165.

YU Fang-da, CHEN Huan, ZHAO Dan etc. Multicolor Upconversion Luminescence from Core-shell Structured Nanoparticles[J]. Chinese Journal of Luminescence, 2014,35(2): 165-171 DOI： 10.3788/fgxb20143502.0165.

摘要

将多色荧光标记技术应用于生物信息检测可实现快速、实时、同步大规模检测目标生物分子的目的，利用上转换纳米粒子作为多色荧光探针可有效地避免生物组织自荧光对检测信号的影响。本文制备了具有核-壳结构的稀土氟化物纳米粒子，并通过在核与壳不同位置共掺杂不同浓度的敏化离子和发光离子来改变发光离子各发射峰之间的相对强度。利用不同颜色和强度的发射光谱实现了纳米粒子的多色上转换发光。利用透射电子显微镜成像、X射线衍射分析、发光光谱等测量手段对多色上转换发光纳米粒子进行了形貌、结构和上转换发光性质的表征。实验结果表明，具有核-壳结构的纳米粒子尺寸小于30 nm，呈球形。在980 nm红外光激发下，纳米粒子呈现从红色到蓝紫色的颜色可变的上转换发光。

Abstract

Multicolor fluorescence labeling techniques used in biological multiplex detection can achieve fast

real-time

simultaneous information for a large number of target bio-molecules. Using upconversion nanoparticles as multicolor fluorescent probes can effectively decrease the influence of auto-fluorescence from biological molecules on the fluorescence signal from the nanoparticles. In this paper

the core-shell structured upconversion nanoparticles were prepared by a facile solvothermal method using polyvinylpyrrolidone (PVP) as the surfactant. By co-doping sensitizer and activator ions in the cores and/or shells

the relative intensity of the emission peak was changed. The multicolor fluorescence was obtained from different nanoparticles with different color and intensity of the emission spectra. These nanoparticles were spherical and their sizes were about 30 nm. With the excitation of a 980 nm diode laser

those nanoparticles emitted bright upconversion luminescence from red to blue-violet.

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references

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