Related Experiment Video
Updated: May 24, 2026

Self-assembling Morphologies Obtained from Helical Polycarbodiimide Copolymers and Their Triazole Derivatives
Published on: February 7, 2017
Induced circular dichroism of stereoregular vinyl polymers
Lung-Chi Chen1, Yung-Cheng Mao, Shih-Chieh Lin
1Department of Chemical Engineering, National Tsing-Hua University, Hsinchu, Taiwan, 30013, ROC.
Abstract:
Stereoregular vinyl polymers, poly(2-vinyl pyridine)s (P2VPs), were synthesized to examine the tacticity effect on the induced circular dichroism (ICD) via association with chiral acids. The ICD was found to be strongly dependent on the isotacticity of the P2VPs and the acidity of chiral acid in addition to its bulkiness.
Related Concept Videos
Polymer Classification: Stereospecificity
Stereoisomerism of Cyclic Compounds
Photochemical Electrocyclic Reactions: Stereochemistry
Selection Rules: Photochemical Activation
Thermal Electrocyclic Reactions: Stereochemistry
Selection Rules: Thermal Activation
Conjugated systems containing an even number of π-electron pairs undergo a conrotatory ring closure. For example, thermal electrocyclization of (2E,4E)-2,4-hexadiene, a conjugated diene containing two π-electron pairs, gives trans-3,4-dimethylcyclobutene.
[3,3] Sigmatropic Rearrangement of Allyl Vinyl Ethers: Claisen Rearrangement
Diels–Alder Reaction Forming Cyclic Products: Stereochemistry

