Chirality induction in metal-induced achiral polythiophene aggregates assisted by optically active amines and polythiophene.
نویسندگان
چکیده
A regioregular achiral polythiophene bearing oxazoline pendant groups formed a unique optically active metal-induced supramolecular aggregate upon complexation with chiral amines or in the presence of a chiral polythiophene in a good solvent for the polymers, thus showing an induced circular dichroism.
منابع مشابه
Unexpected chiral induction from achiral cationic polythiophene aggregates and its application to the sugar pattern recognition.
The aggregates of a cationic polythiophene (PT1) formed in poor solvent in the presence of sugars showed the distinct circular dichroism activity, the intensity being well correlated with the specific optical rotation [α] of sugars: therefore, the present system is useful as a novel sugar structure reading-out method.
متن کاملOn the modeling of aggregates of an optically active regioregular polythiophene.
The conformational properties of the optically active regioregular poly[(R)-3-(4-(4-ethyl-2-oxazolin-2-yl) phenyl) thiophene] (PEOPT) were explored by molecular dynamics on a single chain using several solvents of increasing polarity. Furthermore, their aggregate formation was studied over a wide range of temperatures using a replica exchange molecular dynamics simulation providing simulation d...
متن کاملChiral Solvation Induced Supramolecular Chiral Assembly of Achiral Polymers
To date, liquid crystal chirality, mechanophysical chirality, circularly polarized photon chirality, gelation and chiral solvation are all feasible candidates to generate optically active polymers and supramolecular chirality when employing achiral molecules as start‐ ing substances. Among this, chiral‐solvation‐induced chirality is one of the dominant methods for construction of chirality from...
متن کاملDevelopment of Bottom - Up Chemical Approaches to 3 - D Negative Index
The objective of this project was to develop a new approach to 3-D metamaterials. A key step was developing materials with large optical activity. A unique combination of "bottom up" and "top down" approaches to produce nanostructures was successfully applied. Multiscale modeling was used to design chiral polymers. A series of chiral polymers, based on thiophene, fluorene, and fluorene-quinoxal...
متن کاملPreparation and Characterization of Multiwalled Carbon Nanotubes-Polythiophene Nanocomposites and its Gas Sensitivity Study at Room Temperature
The nanocomposites of polythiophene and carboxylated multiwalled carbon nanotubes (MWCNTs) were synthesized by in-situ chemical oxidative polymerization method using anhydrous ferric chloride (FeCl3) as an oxidant. The MWCNTs functionalized and ultrasonicated to obtain uniform dispersion within the polythiophene matrix. Field emission scanning electron microscopy was used to characterize the mo...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Chemical communications
دوره 48 27 شماره
صفحات -
تاریخ انتشار 2012