Related Experiment Video

Updated: Jan 27, 2026

Cell Culture on Silicon Nitride Membranes and Cryopreparation for Synchrotron X-ray Fluorescence Nano-analysis
08:26

Cell Culture on Silicon Nitride Membranes and Cryopreparation for Synchrotron X-ray Fluorescence Nano-analysis

Published on: December 10, 2019

9.9K

Fluorescence covalent interaction enhanced sensor for lead ion based on novel graphitic carbon nitride nanocones

Hanqiang Zhang1, Yihong Huang2, Yulin Zheng3

  • 1School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, PR China; College of Chemistry and Materials, Longyan University, Longyan 364000, PR China.

Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
|April 2, 2019
PubMed

Keywords:
Covalent interactionFluorescence enhancementGraphitic carbon nitrideNanoconesPb(2+) ionSensor

More Related Videos

A Polyaniline-based Sensor of Nucleic Acids07:58

A Polyaniline-based Sensor of Nucleic Acids

Published on: November 1, 2016

8.4K
An Aptamer-based Sensor for Unchelated GadoliniumIII05:15

An Aptamer-based Sensor for Unchelated GadoliniumIII

Published on: January 9, 2017

7.8K

Related Concept Videos

Network Covalent Solids02:18

Network Covalent Solids

Network covalent solids contain a three-dimensional network of covalently bonded atoms as found in the crystal structures of nonmetals like diamond, graphite, silicon, and some covalent compounds, such as silicon dioxide (sand) and silicon carbide (carborundum, the abrasive on sandpaper). Many minerals have networks of covalent bonds.
To break or to melt a covalent network solid, covalent bonds must be broken. Because covalent bonds are relatively strong, covalent network solids are typically...
16.1K
Ions as Acids and Bases02:54

Ions as Acids and Bases

Salts with Acidic Ions
Salts are ionic compounds composed of cations and anions, either of which may be capable of undergoing an acid or base ionization reaction with water. Aqueous salt solutions, therefore, may be acidic, basic, or neutral, depending on the relative acid-base strengths of the salt’s constituent ions. For example, dissolving the ammonium chloride in water results in its dissociation, as described by the equation:
26.3K
Covalent Bonds01:29

Covalent Bonds

Overview
160.9K
Covalent Bonds01:08

Covalent Bonds

Overview
When two atoms share electrons to complete their valence shells, they create a covalent bond. An atom's electronegativity—the force with which shared electrons are pulled towards an atom—determines how the electrons are shared. Molecules formed with covalent bonds can be either polar or nonpolar. Atoms with similar electronegativities form nonpolar covalent bonds; the electrons are shared equally. Atoms with different electronegativities share electrons unequally,...
10.2K
Covalent Bonding and Lewis Structures02:46

Covalent Bonding and Lewis Structures

Compared to ionic bonds, which results from the transfer of electrons between metallic and nonmetallic atoms, covalent bonds result from the mutual attraction of atoms for a “shared” pair of electrons.
61.0K
Covalently Linked Protein Regulators02:04

Covalently Linked Protein Regulators

Proteins can undergo many types of post-translational modifications, often in response to changes in their environment. These modifications play an important role in the function and stability of these proteins. Covalently linked molecules include functional groups, such as methyl, acetyl, and phosphate groups, and also small proteins, such as ubiquitin. There are around 200 different types of covalent regulators that have been identified.
These groups modify specific amino acids in a protein....
8.9K