相关实验视频

Updated: Jul 20, 2025

Targeting Cysteine Thiols for in Vitro Site-specific Glycosylation of Recombinant Proteins

Targeting Cysteine Thiols for in Vitro Site-specific Glycosylation of Recombinant Proteins

Published on: October 4, 2017

带隙调整和增强基于氨酸的碳点中的芳香化

Fazeleh Feghhi¹, Ava Minagar¹, H R Madaah Hosseini²

¹epartment of Materials Science and Engineering, Sharif University of Technology, Azadi Avenue, P.O. Box 11155-9466, Tehran, Iran.

Journal of colloid and interface science

|August 4, 2023

概括

这项研究通过控制石墨化和含量来澄清和硫化碳点 (CD) 的光发光机制. 这些发现为分析其他碳点材料提供了指南.

科学领域:

材料科学材料科学材料科学
纳米技术纳米技术
化学合成化学合成

背景情况:

由于其复杂的结构和表面化学,碳点 (CD) 的光发光 (PL) 机制仍然不清楚.
(N) 和硫 (S) 合的CD提供可调节的发光,但需要对其特性有更深入的了解.

研究的目的:

为了阐明N,S-doped碳点的光发光机制,这些碳点来自非芳香前体.
为了控制合成期间的芳香化和石墨化程度,用于可调节的PL发射.
为探索碳点中的结构属性关系提供一个一般指南.

主要方法:

使用氨酸,酸 (CA) 和硫酸盐进行水热合成.
使用富里埃变换红外光谱 (FTIR),X射线光电子光谱 (XPS) 和高分辨率传输电子显微镜 (HR-TEM) 的表征.

主要成果:

在PL排放中观察到红移,其中增加了石墨化和核心中较高的石墨含量.
在表面上,Pyridinic和Amine的功能组被确定为对子带形成和PL属性的贡献.
详细的化学和带隙结构被阐明,证实了石墨化和兴奋剂的影响.

结论:

这项研究解决了关于基于氨酸的CD的PL机制的争议.
这些发现为增强非芳香前体的芳香化和石墨化提供了一条途径.
这项工作为各种碳点材料的机制探索和结构分析提供了框架.

关键词:

带隙量身定制带隙量身定制碳点是一些碳点.半氨酸 (cysteine) 是一种蛋白质.发光机制的发光机制结构分析结构分析

更多相关视频

Optimizing the Genetic Incorporation of Chemical Probes into GPCRs for Photo-crosslinking Mapping and Bioorthogonal Chemistry in Live Mammalian Cells

Optimizing the Genetic Incorporation of Chemical Probes into GPCRs for Photo-crosslinking Mapping and Bioorthogonal Chemistry in Live Mammalian Cells

Published on: April 9, 2018

Covalent Labeling with Diethylpyrocarbonate for Studying Protein Higher-Order Structure by Mass Spectrometry

Covalent Labeling with Diethylpyrocarbonate for Studying Protein Higher-Order Structure by Mass Spectrometry

Published on: June 15, 2021

相关概念视频

¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)

¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)

When proton-coupled carbon-13 spectra are simplified by a broadband proton decoupling technique, structural information about the coupled protons is lost. Distortionless enhancement by polarization transfer (DEPT) is a technique that provides information on the number of hydrogens attached to each carbon in a molecule. While the DEPT experiment utilizes complex pulse sequences, the pulse delay and flip angle are specifically manipulated. The resulting signals have different phases depending on...