Related Experiment Video
Updated: Jun 1, 2025

Self-assembling Morphologies Obtained from Helical Polycarbodiimide Copolymers and Their Triazole Derivatives
Published on: February 7, 2017
Manipulating Crystal Packing and Self-Assembly by π-Extended and Isomeric Fused Strategies in Thiophene
Jiaxi Zhang1, Rong Zhang1, Dongyue An1
1Department of Materials Science, State Key Laboratory of Molecular Engineering of Polymers, Laboratory of Molecular Materials and Devices, Fudan University, Shanghai 200433, China.
Abstract:
Two series of polycyclic aromatic hydrocarbon isomers (PT-2 and PT-3, and P2T-V and P2T-C) were designed and synthesized by isomerically fusing phenanthrene with thiophene and thieno[3,2-b]thiophene, respectively. All of the new target molecules were confirmed by single-crystal X-ray analysis, and it was found that the solid-state packing can be effectively modulated through a combination of π-extended and isomeric fused strategies. Meanwhile, compared with thiophene ring-terminated isomers PT-2 and PT-3, both having a V-shaped geometry and showing no obvious self-assembly behavior, π-extended unit thieno[3,2-b]thiophene-terminated isomer P2T-V displays a V-shaped structure with moderate self-assembly properties and isomer P2T-C exhibits a C-shaped configuration with further enhanced self-assembly properties.
Related Concept Videos
Aromatic Hydrocarbon Cations: Structural Overview
Removing one hydrogen from the intervening CH2 group...
Five-Membered Heterocyclic Aromatic Compounds: Overview
Aromatic Hydrocarbon Anions: Structural Overview
Due to the absence of continuous...
Frost Circles for Different Conjugated Systems
Olefin Metathesis Polymerization: Ring-Opening Metathesis Polymerization (ROMP)
Criteria for Aromaticity and the Hückel 4n + 2 Rule
For the first time, Eric Hückel, a German chemical physicist, derived a set of structural features for a compound to be classified as aromatic. This is now known as...

