快速准备长波长发射碳点用于信息加密,使用微波辅助方法
Hongmei Zhang1, Xiangjun Guo1, Ke Jian1
1School of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, China.
Inorganic chemistry
|August 16, 2023
概括
研究人员开发了一种为长波长光碳点的快速7分钟微波辅助合成. 这些和添加的碳点为防伪和信息加密应用提供了增强的能力.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 摄影化学的使用.
背景情况:
- 合成长波长光碳点具有挑战性,特别是在短时间内.
- 现有的方法往往缺乏快速生产特定排放颜色的效率.
研究的目的:
- 快速合成黄色,色和红色的光碳点与长波长的辐射.
- 探索这些碳点在防伪和信息加密中的应用.
主要方法:
- 微波辅助合成使用o-phenylenediamine,酸和化.
- 合成和添加碳点的表征.
- 光墨水的配方和在信息加密模式中的应用.
主要成果:
- 在7分钟内成功合成了黄色,色和红色B,N-编码的碳点.
- B,N 兴奋剂含量的变化导致了不同的表面结构和发光特性.
- 使用光油墨在纸上的反伪造和二次加密能力.
结论:
- 快速合成方法提供了有效的长波长光碳点的访问.
- 合成的碳点显示出先进信息加密和防伪技术的巨大潜力.
- 可调节的光和易于应用使它们适合安全的文档和产品认证.
更多相关视频
10:41Enhanced Electron Injection and Exciton Confinement for Pure Blue Quantum-Dot Light-Emitting Diodes by Introducing Partially Oxidized Aluminum Cathode
Published on: May 31, 2018
8.8K
10:44Preparation of Biomass-based Mesoporous Carbon with Higher Nitrogen-/Oxygen-chelating Adsorption for CuII Through Microwave Pre-Pyrolysis
Published on: February 12, 2019
10.0K
相关概念视频
01:04¹³C NMR: ¹H–¹³C Decoupling
The probability of having two carbon-13 atoms next to each other is negligible because of the low natural abundance of carbon-13. Consequently, peak splitting due to carbon-carbon spin-spin coupling is not observed in spectra. However, protons up to three sigma bonds away split the carbon signal according to the n+1 rule, resulting in complicated spectra.
A broadband decoupling technique is used to simplify these complex, sometimes overlapping, signals. Broadband decoupling relies on a...
A broadband decoupling technique is used to simplify these complex, sometimes overlapping, signals. Broadband decoupling relies on a...
01:12Double Resonance Techniques: Overview
Double resonance techniques in Nuclear Magnetic Resonance (NMR) spectroscopy involve the simultaneous application of two different frequencies or radiofrequency pulses to manipulate and observe two distinct nuclear spins. One important application of double resonance is spin decoupling, which selectively suppresses coupling with one type of nucleus while observing the NMR signal from another nucleus, simplifying the spectrum and enhancing resolution.
Spin decoupling is usually achieved by...
Spin decoupling is usually achieved by...