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Int. J. Mol. Sci. 2003, 4(5), 291-300; doi:10.3390/i4050291
Article

Conjugated Molecules for the Smart Filtering of Intense Radiations

Institut für Organische Chemie, University of Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
Received: 23 January 2003 / Accepted: 4 March 2003 / Published: 15 April 2003
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Abstract

The practical realization of smart optical filters, i.e. devices which change their optical transmission in a suitable way to keep a working state for a general light sensitive element , can involve the use of conjugated molecules whose light absorption properties are light- intensity dependent (nonlinear optical effect). The verification of optical limiting displayed by some particular conjugated molecules, e.g. phthalocyanines, is quite noteworthy and can be successfully exploited for the realization of such smart optical devices. In the present contribution the analysis of the relevant molecular feature of a phthalocyanine are analyzed with the aim of determining useful correlations between optical limiting performance and phthalocyanine chemical structure. In particular , the electronic nature of the substituent is considered as a key factor for the explanation of some observed optical limiting trends.
Keywords: Conjugated molecule; smart optical filter; intensity dependent optical properties Conjugated molecule; smart optical filter; intensity dependent optical properties
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Dini, D. Conjugated Molecules for the Smart Filtering of Intense Radiations. Int. J. Mol. Sci. 2003, 4, 291-300.

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