NDLI: 2D Multilayered π-stacked conjugated polymers based on a U-turn pseudo-geminal [2.2]paracyclophane scaffold

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Polymer Chemistry Vol -2

Polymer Chemistry Vol -1

2D Multilayered π-stacked conjugated polymers based on a U-turn pseudo-geminal [2.2]paracyclophane scaffold

Content Provider	Royal Society of Chemistry (RSC)
Author	Collard, David M. Jagtap, Subodh P.
Copyright Year	2012
Abstract	4,15-Diethynyl, diethenyl and dihalo-substituted [2.2]paracyclophanes were explored as monomers to prepare polymers consisting of conjugated units held in a multi-tiered stacked arrangement. The pseudo-geminal substitution pattern of the [2.2]paracyclophane core affords a U-turn at the end of each tier in the polymeric architecture. This two-dimensional assembly of conjugated chains is similar to the organization of segments of conjugated polymers in the solid state. The broad fluorescence emission and large Stokes shift of the polymers compared to model unstacked linear analogs suggest that the excited state of the polymer undergoes energy transfer with mixing of π-orbitals to afford a “phane” electronic state. The magnitude of the Stokes shift of the polymers relative to the isomeric pseudo-parapolymers, in which stacking is limited to just the terminal rings of each tier, indicates the importance of the extended nature of the overlap of conjugated units on their electronic structure.
Starting Page	463
Ending Page	471
Page Count	9
File Format	HTM / HTML PDF
ISSN	17599954
Volume Number	3
Issue Number	2
Journal	Polymer Chemistry
DOI	10.1039/c2py00473a
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Stokes shift Stokes Fluorescence Polymer Cyclophane
Content Type	Text
Resource Type	Article
Subject	Organic Chemistry Biochemistry Bioengineering Biomedical Engineering Polymers and Plastics

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2D Multilayered π-stacked conjugated polymers based on a U-turn pseudo-geminal [2.2]paracyclophane scaffold

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