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More than meets the eye: conformational switching of a stacked dialkoxynaphthalene-naphthalenetetracarboxylic diimide (DAN-NDI) foldamer to an NDI-NDI fibril aggregate.


ABSTRACT: The thermally induced conformational switching of a stacked dialkxoynaphthalene-naphthalenetetracarboxylic diimide (DAN-NDI) amphiphilic foldamer to an NDI-NDI fibril aggregate is described. The aggregated fibril structures were explored by UV/Vis, circular dichroism (CD), atomic-force microscopy (AFM), and TEM techniques. Our findings indicate that the aromatic DAN-NDI interactions of the original foldamer undergoes transformation to a fibrillar assembly with aromatic NDI-NDI stacked interactions. These structural insights could help inform new molecular designs and increase our understanding of fibrillar assembly and aggregation process in aqueous solution.

SUBMITTER: Peebles C 

PROVIDER: S-EPMC3825095 | biostudies-literature | 2013 Aug

REPOSITORIES: biostudies-literature

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More than meets the eye: conformational switching of a stacked dialkoxynaphthalene-naphthalenetetracarboxylic diimide (DAN-NDI) foldamer to an NDI-NDI fibril aggregate.

Peebles Cameron C   Piland Rebecca R   Iverson Brent L BL  

Chemistry (Weinheim an der Bergstrasse, Germany) 20130712 35


The thermally induced conformational switching of a stacked dialkxoynaphthalene-naphthalenetetracarboxylic diimide (DAN-NDI) amphiphilic foldamer to an NDI-NDI fibril aggregate is described. The aggregated fibril structures were explored by UV/Vis, circular dichroism (CD), atomic-force microscopy (AFM), and TEM techniques. Our findings indicate that the aromatic DAN-NDI interactions of the original foldamer undergoes transformation to a fibrillar assembly with aromatic NDI-NDI stacked interactio  ...[more]

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