Related Experiment Video
Updated: Feb 2, 2026
10:27
Preparation of Highly Porous Coordination Polymer Coatings on Macroporous Polymer Monoliths for Enhanced Enrichment of Phosphopeptides
Published on: July 14, 2015
10.5K
Emissive Azobenzenes Delivered on a Silver Coordination Polymer
Jingjing Yan1, Liam Wilbraham2, Prem N Basa1
1Department of Chemistry and Biochemistry , Worcester Polytechnic Institute , 100 Institute Road , Worcester , Massachusetts 01609-2280 , United States.
Inorganic Chemistry
|November 17, 2018
Summary
Researchers developed luminescent silver coordination polymers from aminoazobenzene ligands. These materials show reversible emission changes, offering potential for novel sensor applications.
Area of Science:
- Materials Science
- Supramolecular Chemistry
- Photochemistry
Background:
- Azobenzene derivatives are widely used in functional materials due to light-induced isomerization.
- Utilizing azobenzene luminescence is challenging because excitation energy often dissipates nonradiatively.
Purpose of the Study:
- To explore the luminescence of aminoazobenzene derivatives and their silver complexes.
- To investigate the potential of these complexes as responsive materials.
Main Methods:
- Synthesis and characterization of five aminoazobenzene ligands and their silver complexes.
- Investigation of luminescence properties under ambient conditions.
- Study of the response of a specific coordination polymer (AgAAE pP) to metal-coordinating analytes.
Main Results:
- Four aminoazobenzene ligands formed silver coordination polymers that exhibit room-temperature luminescence.
- The ligand AzoAE pP formed a 3D coordination polymer (AgAAE pP) with luminescence.
- AgAAE pP demonstrated reversible emission quenching upon addition of pyridine, indicating disassembly and reassembly.
Conclusions:
- Aminoazobenzene ligands can be incorporated into luminescent silver coordination polymers.
- The reversible luminescence switching of AgAAE pP suggests its utility in sensing applications.
- The observed switching mechanism involves analyte-driven displacement and reformation of the coordination polymer structure.
Related Concept Videos
02:34Polymers
40.9K
The word polymer is derived from the Greek words “poly” which means “many” and “mer” which means “parts”. Polymers are long chains of molecules composed of repeating units of smaller molecules, known as monomers. They either occur naturally, such as DNA and proteins, or can be constructed synthetically, like plastics. They have varied structural characteristics, such as linear chains, branched chains, or complex networks, that contribute to the...
40.9K
02:57Coordination Number and Geometry
19.0K
For transition metal complexes, the coordination number determines the geometry around the central metal ion. Table 1 compares coordination numbers to molecular geometry. The most common structures of the complexes in coordination compounds are octahedral, tetrahedral, and square planar.
19.0K
02:39Emission Spectra
76.3K
When solids, liquids, or condensed gases are heated sufficiently, they radiate some of the excess energy as light. Photons produced in this manner have a range of energies, and thereby produce a continuous spectrum in which an unbroken series of wavelengths is present.
76.3K
02:54Coordination Compounds and Nomenclature
26.7K
In most main group element compounds, the valence electrons of the isolated atoms combine to form chemical bonds that satisfy the octet rule. For instance, the four valence electrons of carbon overlap with electrons from four hydrogen atoms to form CH4. The one valence electron leaves sodium and adds to the seven valence electrons of chlorine to form the ionic formula unit NaCl (Figure 1a). Transition metals do not normally bond in this fashion. They primarily form coordinate covalent bonds, a...
26.7K
02:33Lattice Centering and Coordination Number
11.6K
The structure of a crystalline solid, whether a metal or not, is best described by considering its simplest repeating unit, which is referred to as its unit cell. The unit cell consists of lattice points that represent the locations of atoms or ions. The entire structure then consists of this unit cell repeating in three dimensions. The three different types of unit cells present in the cubic lattice are illustrated in Figure 1.
Types of Unit Cells
Imagine taking a large number of identical...
Types of Unit Cells
Imagine taking a large number of identical...
11.6K
01:21Equations of Motion: Rectangular Coordinates and Cylindrical Coordinates
775
Understanding the motion of particles is a fundamental aspect of classical mechanics, and the choice of the coordinate system plays a pivotal role in unraveling the complexities of their dynamics.
When a particle moves relative to an inertial frame, the equations of motion can be expressed using rectangular components. If the motion is confined to the x-y plane, the equations having the x and y coordinates only can be used to simplify the mathematical representation.
However, when particles...
When a particle moves relative to an inertial frame, the equations of motion can be expressed using rectangular components. If the motion is confined to the x-y plane, the equations having the x and y coordinates only can be used to simplify the mathematical representation.
However, when particles...
775