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可调节的碳点聚合物接口,用于机械和分析控制等离子体肌素传感器

Nur Afifah Ahmad Nazri¹, Ahmad Rifqi Md Zain¹, Mohd Hafiz Abu Bakar²

¹Institute of Microengineering and Nanoelectronics (IMEN), Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia.

Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy

|December 20, 2025

概括

这项研究表明,混合膜中的聚合物极性如何影响肌氨酸检测. 疏水膜对这种功能生物标志物具有更高的灵敏度和选择性,从而使光学传感器设计更好.

科学领域:

材料科学材料科学材料科学
生物医学工程生物医学工程
分析化学分析化学

背景情况:

肌素是功能的一个关键指标,但光学传感方法需要更好地了解界面效应.
局部表面等离子共振 (LSPR) 提供无标签检测,但其性能对表面化学敏感.

研究的目的:

调查聚合物极性对分子吸附和在无标签肌素传感中的等离子信号的影响.
建立一个框架,将接口属性与LSPR传感器性能联系起来,以检测肌氨酸.

主要方法:

混合聚合物-碳点 (CD) 薄膜的制造,使用疏水性聚甲基酸 (PMMA) 和疏水性聚氨 (PANI).
使用FTIR,FESEM和AFM进行膜形态和相互作用的表征.
评估肌素感应性能,包括线性,检测极限 (LOD),灵敏度和选择性.

主要成果:

PMMA-CD片显示出强烈的线性,低LOD为29μM,高灵敏度 (0.14 nm μM-1).
PANI-CD电影显示了更广泛的动态范围,但灵敏度较低 (LOD = 99μM).
PMMA-CD表现出对肌素的优秀选择性,而不是其他生物分子,如尿素和专素.

结论:

接口极性显著影响肌素传感器中的分子吸附和LSPR反应.
疏水性PMMA-CD薄膜为敏感和选择性光学检测肌素提供了一个有前途的平台.
这些发现为用于生物医学诊断的非酶性光学传感器提供了合理的设计策略.

关键词:

碳点是一些碳点.肌氨酸 (creatinine) 是一种蛋白质.聚合物的聚合物.表面等离子体共振是什么?

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