Facile synthesis of azobenzene‐embedded conjugated macrocycles for optically switchable single‐crystal transistors and tunable supramolecular assemblies
Abstract A series of new π ‐conjugated macrocycles ( AzoM‐n‐ E , n = 1–3) incorporating azobenzene units have been synthesized by a facile strategy in one‐pot reaction. The resultant azobenzene‐embedded macrocycles feature intrinsic photoresponsive behaviors and intriguing supramolecular assembling...
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Published in | Aggregate (Hoboken) Vol. 4; no. 6 |
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Main Authors | , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Wiley
01.12.2023
|
Subjects | |
Online Access | Get full text |
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Summary: | Abstract
A series of new
π
‐conjugated macrocycles (
AzoM‐n‐
E
, n = 1–3) incorporating azobenzene units have been synthesized by a facile strategy in one‐pot reaction. The resultant azobenzene‐embedded macrocycles feature intrinsic photoresponsive behaviors and intriguing supramolecular assembling properties. The smallest macrocycle
AzoM‐1‐
E
with a rigid planar conjugated backbone structure is used to prepare the single crystal transistors, showing reversible optical tunability. The moderate size macrocycle
AzoM‐2‐
E
assembles into a dimer in the form of interpenetration through
π‐π
stacking between azobenzene units. The largest macrocycle
AzoM‐3‐
E
with enhanced flexibility can adaptively assemble with various types of electron‐deficient guests accompanied by distortion of azobenzene. Typically,
AzoM‐3‐
E
assembles with the planar F4‐TCNQ to form a tetragonal geometry by
C‐F···π
and
π‐π
interactions, while the assembly with ellipsoidal C
70
via
π‐π
interactions induces
AzoM‐3‐
E
to form a boat‐shaped geometry. This work will shed new light on the development of functional conjugated macrocycles in organic electronics. |
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ISSN: | 2692-4560 2692-4560 |
DOI: | 10.1002/agt2.380 |