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一种明亮的有机光体,用于精确测量NIR-II窗口中的相对量子产量
Hanchen Shen1, Xinyan Zhu1, Jianyu Zhang1
1Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Department of Chemical and Biological Engineering, Division of Life Science, and State Key Laboratory of Molecular Neuroscience, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, 999077, China.
Small (Weinheim an der Bergstrasse, Germany)
|February 24, 2025
概括
准确测量二次近红外 (NIR-II) 有机光体的光发光量子产量 (PLQY) 是至关重要的. 这项研究引入了TPE-BBT作为可靠的标准,可用于改进生物成像和光电子应用的精确PLQY确定.
科学领域:
- 有机化学 有机化学
- 材料科学是一种材料科学.
- 频谱学是一种光谱学.
背景情况:
- 在第二次近红外 (NIR-II) 窗口 (1000-1700 nm) 中发射的有机染料对于先进的生物成像和光电子学至关重要.
- 光发光量子收益率 (PLQY) 是一个关键的性能指标,但由于低值和不一致的标准,精确的测量具有挑战性.
- 当前的相对PLQY方法存在重大错误,这些错误源于像IR-26这样的共同标准的未定义PLQY.
研究的目的:
- 建立一个可靠的标准,用于准确的PLQY确定NIR-II有机化物.
- 为了解决当前PLQY测量协议中的不一致性.
- 为了能够更精确地评估NIR-II光体,用于生物成像和光电子应用.
主要方法:
- 利用集成球技术对一种新型光体TPE-BBT进行绝对PLQY测量.
- 推出了TPE-BBT作为NIR-II有机光体的新高PLQY标准.
- 采用TPE-BBT来准确确定特定溶剂中既定标准 (IR-26和IR-1061) 的PLQY值.
主要成果:
- 合成了一种明亮的有机光体,TPE-BBT,在THF中显示出高绝对PLQY的3.94%.
- 在1,2-二乙烯中,IR-26的PLQY准确确定为0.0284%.
- 在二甲中,IR-1061的PLQY准确确定为0.182%.
结论:
- TPE-BBT作为可靠和准确的标准来测量NIR-II有机光体的PLQY.
- 预计TPE-BBT作为标准的建立将统一评估标准,并减少现场错误.
- 准确的PLQY数据对于开发和应用高性能NIR-II有机材料至关重要.
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