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Structural Isomerism

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Isomers are different chemical species that have the same chemical formula. Structural isomerism of coordination compounds can be divided into two subcategories, the linkage isomers and coordination-sphere isomers.
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Related Experiment Video

Updated: Jul 22, 2026

A Technique to Functionalize and Self-assemble Macroscopic Nanoparticle-ligand Monolayer Films onto Template-free Substrates

A Technique to Functionalize and Self-assemble Macroscopic Nanoparticle-ligand Monolayer Films onto Template-free Substrates

Published on: May 9, 2014

One-Pot Self-Assembly of Sequence-Controlled Mesoporous Heterostructures via Structure-Directing Agents.

Taylor Larison¹, Eric R Williams¹, Mason Wright¹

¹Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States.

|July 29, 2024

Summary

Researchers developed novel block polymers for self-assembling nanoscale porous heterostructures. This breakthrough allows precise control over material placement, mimicking nature

Keywords:

heterostructure mesoporous phosphonic acid self-assembly sequence control

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Last Updated: Jul 22, 2026

A Technique to Functionalize and Self-assemble Macroscopic Nanoparticle-ligand Monolayer Films onto Template-free Substrates

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Published on: May 9, 2014

Self-assembly of Complex Two-dimensional Shapes from Single-stranded DNA Tiles

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Published on: May 8, 2015

Synthesis of Information-bearing Peptoids and their Sequence-directed Dynamic Covalent Self-assembly

Synthesis of Information-bearing Peptoids and their Sequence-directed Dynamic Covalent Self-assembly

Published on: February 6, 2020

Area of Science:

Materials Science and Engineering
Nanotechnology
Polymer Chemistry

Background:

Multimaterial heterostructures exhibit properties superior to individual components.
Nature achieves complex heterostructures via biomineralization, but synthetic methods lack self-assembly elegance.
Current synthetic approaches for nanoscale heterostructures are limited and often fail to replicate natural self-assembly.

Purpose of the Study:

To develop block polymer structure-directing agents (SDAs) for fabricating nanoscale porous heterostructures.
To enable direct, self-assembled synthesis of heterostructures with controlled material localization.
To establish design rules for creating sequence-controlled, continuous porous heterostructures.

Main Methods:

Development of block polymer SDAs with repeat units for persistent (covalent) nanoparticle (NP) interactions.
Utilizing sequence-controlled polymer-NP interactions to direct heterostructure formation.
Investigating combinations of persistent and dynamic (noncovalent) SDA-NP interactions to optimize porosity and material localization.

Main Results:

Demonstrated fabrication of nanoscale porous heterostructures with single materials localized as continuous layers at pore surfaces.
Established design rule 1: Persistent SDA-NP binding enables sequence-controlled heterostructures based on synthetic order.
Showcased generalization with 5 material sequences (TiO2, Nb2O5, ZrO2) and introduced design rules 2 & 3 involving combined persistent/dynamic interactions for improved porosity.

Conclusions:

The developed block polymer SDAs facilitate direct self-assembly of advanced nanoscale porous heterostructures.
The three design rules enable precise control over material sequence, pore structure, and continuous porosity.
This approach offers a pathway to synthesize complex heterostructures with tailored properties, inspired by biomineralization.