相关实验视频

Updated: Jul 12, 2026

Fabrication of Polymer Microspheres for Optical Resonator and Laser Applications

Fabrication of Polymer Microspheres for Optical Resonator and Laser Applications

Published on: June 2, 2017

合成,表面形态,气体传感器,DSC技术和导电聚合物的第三阶行为

Fadhil A Tuma¹, Alyaa A Jari², Harith A Hasan³

¹Department of Physics, College of Education for Pure Sciences, University of Basrah, Basrah, Iraq.

Journal of fluorescence

|September 27, 2023

概括

用硫酸合成的聚亚尼林 (Poly-ANI) 具有可调节的光学非线性和敏感的氨 (NH3) 气体传感能力,使其成为高级应用的多功能材料.

科学领域:

材料科学材料科学材料科学
光电学是指光电子产品.
化学工程是化学工程的重要组成部分.

背景情况:

聚氨酸 (Poly-ANI) 是一种具有调节性质的导电聚合物.
硫酸度影响了Poly-ANI的合成和特性.
光学非线性和气体传感是先进材料应用的关键特性.

研究的目的:

使用不同度的硫酸合成聚亚尼林 (Poly-ANI).
描述合成的Poly-ANI的线性和第三阶光学非线性特性.
为了评估Poly-ANI膜的氨 (NH3) 气体传感性能.

主要方法:

用于Poly-ANI合成的化学聚合.
使用FTIR,FE-SEM,EDS,DSC和UV-Vis光谱学进行表征.
第三阶光学非线性测量通过Z扫描在532nm.
在20-250 ppm范围内评估氨气传感.

主要成果:

用不同度的硫酸合成的Poly-ANI显示出不同的特性.
观察到负的非线性折射率,可根据酸度调节.
实现了高非线性折射率 -1.2 x 10^-12 cm^2/W和易感度为21.5 x 10^-5 esu.
聚ANI薄膜显示出有效的NH3气体传感器从20到250ppm.

结论:

合成方法允许调整Poly-ANI的光学非线性.
该材料在光学限制应用中显示出前途.
聚尼是氨气传感器设备的合适候选者.

关键词:

双极性双色球运动员化学聚合物化的化学聚合物.导电带是指导带.美国国家安全委员会 DSC.开放的光圈孔口.

更多相关视频

Raman and IR Spectroelectrochemical Methods as Tools to Analyze Conjugated Organic Compounds

Raman and IR Spectroelectrochemical Methods as Tools to Analyze Conjugated Organic Compounds

Published on: October 12, 2018

Surface Properties of Synthesized Nanoporous Carbon and Silica Matrices

Surface Properties of Synthesized Nanoporous Carbon and Silica Matrices

Published on: March 27, 2019

相关概念视频

Chemical Ionization (CI) Mass Spectrometry

Chemical Ionization (CI) Mass Spectrometry

The molecular ion peak of a molecule in the mass spectrum provides vital information for molecular identification. However, conventional electron impact ionization can lead to the rapid dissociation of some molecular ions before they reach the detector. A milder ionization method is required to increase the lifetime of such ionized analyte molecules. Chemical ionization (CI) is a gas-phase protonation reaction useful for mass-analyzing analyte molecules that are easily protonated to yield the...

Tandem Mass Spectrometry

Tandem Mass Spectrometry

Tandem mass spectrometry is a technique that uses multiple mass analyzers in series to obtain a higher selectivity and reduce chemical noise during analyte detection. Instruments with multiple analyzers separated by an interaction cell enable secondary fragmentation and selected study of the fragment ions.Secondary fragmentations occur in the interaction cell and can be induced by various factors. Fragmentation induced by collision with inert gases, such as N2, Ar, He, etc., is called...

Sublimation

Sublimation

Sublimation is the direct transformation of a solid to a gaseous state. For instance, at standard pressure and room temperature, solid carbon dioxide sublimes to gaseous carbon dioxide. The phase diagram depicts the conditions required for sublimation. This process occurs at the solid-gas phase boundary and is not observed above the triple point of the substance. The reverse of sublimation is called deposition, where a gaseous substance condenses directly into a solid. Sublimation and...

Gas Chromatography: Types of Detectors-I

Gas Chromatography: Types of Detectors-I

There are different types of detectors used in gas chromatography, each with its own specific properties that make it suitable for detecting certain types of analytes. The most commonly used detectors in GC are thermal conductivity detector (TCD), flame ionization detector (FID), and electron capture detector (ECD).
TCD is the earliest and most widely used detector that operates by measuring the changes in the thermal conductivity of the carrier gas. When a sample compound enters the detector,...

Gas Chromatography: Types of Detectors-II

Gas Chromatography: Types of Detectors-II

In gas chromatography, different detectors are employed to meet specific analytical needs. These detectors are often categorized based on their detection mechanisms and the types of compounds they are best suited to analyze. Thermal Conductivity Detectors (TCD), Flame Ionization Detectors (FID), and Electron Capture Detectors (ECD) represent common categories, each with unique operating principles and applications. However, beyond these, several other detectors are designed for more specialized...

Supercritical Fluid Chromatography

Supercritical Fluid Chromatography

Supercritical fluid chromatography (SFC) provides a beneficial substitute for gas chromatography (GC) and liquid chromatography (LC) for certain samples because it merges the top attributes of both techniques. SFC allows the separation and analysis of compounds that GC or LC does not easily manage. These compounds are traditionally nonvolatile or thermally unstable, making GC unsuitable and lacking functional groups required for HPLC analysis.
SFC utilizes a supercritical fluid mobile phase,...