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Issue 3, 2008

The photophysical properties of expanded porphyrins: relationships between aromaticity, molecular geometry and non-linear optical properties

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Abstract

Porphyrins, which consist of four pyrrolic subunits, are a ubiquitous class of naturally occurring compound with versatile photophysical properties. As an extension of the basic structure of the porphyrinmacrocycle, there have been a multitude of approaches to synthesize expanded porphyrins with more than four pyrrole rings, leading to the modification of the macrocyclic ring size, planarity, number of π-electrons and aromaticity. However, the relationship between the photophysical properties and the structures of expanded porphyrins has not been systematically investigated. The main purpose of this article is to describe the structure–property relationships of a variety of expanded porphyrins based on experimental and theoretical results, which include steady-state and time-resolved spectroscopic characterizations, non-linear absorption ability and nucleus-independent chemical shift calculations.

Graphical abstract: The photophysical properties of expanded porphyrins: relationships between aromaticity, molecular geometry and non-linear optical properties

Article information


Submitted
25 Jun 2008
Accepted
04 Sep 2008
First published
24 Oct 2008

Chem. Commun., 2008
Article type
Feature Article

The photophysical properties of expanded porphyrins: relationships between aromaticity, molecular geometry and non-linear optical properties

J. M. Lim, Z. S. Yoon, J. Shin, K. S. Kim, M. Yoon and D. Kim, Chem. Commun., 2008 DOI: 10.1039/B810718A

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