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在局部功能化的单壁碳纳米管中,缺陷光发光的温度反应

Ryo Hamano¹, Yoshiaki Niidome¹, Naoki Tanaka^1,2

¹Department of Applied Chemistry, Graduate School of Engineering, Kyushu University 744 Motooka Fukuoka 819-0395 Japan fujigaya.tsuyohiko.948@m.kyushu-u.ac.jp.

|February 10, 2025

概括

新的单壁碳纳米管为深层组织监测提供了增强的温度传感. 它们在第二近红外区域 (NIR-II) 的响应能力提高,推动了生物相容温度传感器的开发.

科学领域:

生物医学工程生物医学工程
材料科学材料科学材料科学
纳米技术纳米技术

背景情况:

在体内温度监测对于理解生物过程至关重要.
现有的光发光 (PL) 温度计 (可见于NIR-I) 具有有限的组织透和灵敏度.
在深层组织应用中,纳米级温度计需要提高性能.

研究的目的:

研究在第二近红外 (NIR-II) 区域发射的局部功能化单壁碳纳米管 (lf-SWCNTs) 中光发光 (PL) 的温度依赖性.
系统地检查介电环境,缺陷密度和纳米管长度对温度响应性的影响.
为了优化lf-SWCNTs,在生物系统中增强温度传感.

主要方法:

合成和特征局部功能化的单壁碳纳米管 (lf-SWCNTs) 具有不同的特性.
在1140nm和1260nm处测量光发光的温度依赖性 (PL).
研究了疏水性表面活性剂分散与疏水性凝涂层对PL温度敏感性的影响.
分析了缺陷密度和纳米管长度对温度响应性的影响.

主要成果:

在1260nm的光发光 (PL) 显示出比在1140nm的PL更高的温度灵敏度.
较低的介电环境 (水友性凝涂层) 提高了温度响应.
较长的lf-SWCNTs与较短的相比,表现出更大的温度响应能力.
经过优化凝涂层的 lf-SWCNT,其温度响应性得到了改善.

结论:

凝涂层lf-SWCNT为传感应用提供了卓越的温度响应.
这些NIR-II发射纳米管在开发先进的生物相容温度传感器方面具有前景.
这些发现为复杂的生物环境中深层组织温度监测提供了一条途径.

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