Related Experiment Video
Updated: Jan 3, 2026
08:45
Forming Giant-sized Polymersomes Using Gel-assisted Rehydration
Published on: May 26, 2016
9.8K
Macromolecular Isomerism in Giant Molecules
Yu Shao1, Shuguang Yang2, Wen-Bin Zhang1
1Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry & Physics of Ministry of Education, Center for Soft Matter Science and Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, P. R. China.
Chemistry (Weinheim an Der Bergstrasse, Germany)
|November 15, 2019
Summary
Macromolecular isomerism in giant molecules offers new ways to tune properties. Researchers designed and studied various isomers, revealing potential for fine-tuning macromolecular structures and functions.
Area of Science:
- Polymer Chemistry
- Supramolecular Chemistry
- Materials Science
Background:
- Macromolecular isomerism is crucial but understudied.
- Giant molecules from molecular nanoparticles offer a platform for isomer studies.
- Properties are highly dependent on primary structures.
Purpose of the Study:
- To investigate macromolecular isomerism using giant molecules.
- To explore the design, synthesis, and characterization of various isomers.
- To understand how isomerism influences self-assembly and properties.
Main Methods:
- Design and synthesis of sequence-, regio-, and topo-isomers.
- Characterization of synthesized isomers.
- Analysis of self-assembly influenced by isomer symmetry and interactions.
Main Results:
- Successfully designed, synthesized, and characterized various macromolecular isomers.
- Demonstrated that self-assembly is subtly influenced by isomer-specific symmetry and interactions.
- Identified isomerism as a key factor in macromolecular structure and collective behavior.
Conclusions:
- Isomerism can be exploited to fine-tune macromolecular structures and properties.
- This finding has significant implications for fundamental research.
- Opens new avenues for technical innovation in materials science.
Related Concept Videos
02:52Stereoisomerism
13.7K
Isomerism in Complexes
Isomers are different chemical species that have the same chemical formula.
Transition metal complexes often exist as geometric isomers, in which the same atoms are connected through the same types of bonds but with differences in their orientation in space. Coordination complexes with two different ligands in the cis and trans positions from a ligand of interest form isomers. For example, the octahedral [Co(NH3)4Cl2]+ ion has two isomers (Figure 1) In the cis...
Isomers are different chemical species that have the same chemical formula.
Transition metal complexes often exist as geometric isomers, in which the same atoms are connected through the same types of bonds but with differences in their orientation in space. Coordination complexes with two different ligands in the cis and trans positions from a ligand of interest form isomers. For example, the octahedral [Co(NH3)4Cl2]+ ion has two isomers (Figure 1) In the cis...
13.7K
02:43Isomerism
22.8K
Isomers are molecules with the same molecular formula but different structural arrangements. Isomers can be further classified into constitutional isomers and stereoisomers. Constitutional isomers differ in the connectivity of their constituent atoms. For example, 2-butanol and diethyl ether are constitutional isomers, as they have the same chemical formula, C4H10O, but differ in the connectivity of the carbon and oxygen atoms. Constitutional isomers have different physical and chemical...
22.8K
02:33Stereoisomerism of Cyclic Compounds
10.8K
In this lesson, we delve into the role of ring conformation and its stability, which determines the spatial arrangement and, consequently, the molecular symmetry and stereoisomerism of cyclic compounds. 1,2-Dimethylcyclohexane is used as a case study to evaluate the possible number of stereoisomers. Here, given the multiple (n = 2) chiral centers, there are 2n = 4 possible configurations that lack a plane of symmetry, as the ring skeleton exists in a non-planar chair conformation. In addition,...
10.8K
02:34Structural Isomerism
21.4K
Isomerism in Complexes
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.
Linkage isomers occur when the coordination compound contains a ligand that can bind to the transition metal center through two different atoms. For example, the CN− ligand can bind through the carbon atom or through the nitrogen atom. Similarly, SCN− can...
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.
Linkage isomers occur when the coordination compound contains a ligand that can bind to the transition metal center through two different atoms. For example, the CN− ligand can bind through the carbon atom or through the nitrogen atom. Similarly, SCN− can...
21.4K
02:32Stereoisomers
17.3K
On the basis of mirror symmetry, stereoisomers of an organic molecule can be further classified into diastereomers and enantiomers. Diastereomers are stereoisomers that are not mirror images of each other. Substituted alkenes, such as the cis and trans isomers of 2-butene, are diastereomers, as these molecules exhibit different spatial orientations of their constituent atoms, are not mirror images of each other, and do not interconvert. Here, the interconversion is suppressed due to...
17.3K
02:25Molecules with Multiple Chiral Centers
14.7K
Molecules that possess multiple chiral centers can afford a large number of stereoisomers. For instance, while some molecules like 2-butanol have one chiral center, defined as a tetrahedral carbon atom with four different substituents attached, several molecules like butane-2,3-diol have multiple chiral centers. A simple formula to predict the number of stereoisomers possible for a molecule with n chiral centers is 2n. However, there can be a lower number where some of the stereoisomers are...
14.7K