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United States of America As Represented by the Secretary of the Air Force

Aaron R Burke

Thomas M Cooper

Ronald F Ziolo

Anatoliy Volodymyrovych Glushchenko

Benjamin C Hall

Paul A Fleitz

A cholesteric liquid crystal. The liquid crystal includes a metal acetylide, of which the metal is a square, planar transition metal. The metal acetylide includes first and second acylphosphine ligands and first and second phenyl acetylene ligands. Each of the first and second phenyl acetylene ligands have a meta- or para-substituent, which are selected from the group consisting of H, F, CN, OCH, C&#x2261;C&#x2014;CH,(COO&#x2014;CHO), and COO&#x2014;CH&#x2014;C))&#x2014;CHO.

Glassy cholesteric liquid crystalline metal acetylides

The present invention relates to a series of platinum acetylide nonlinear optical chromophores which are liquid at room temperature. The viscosity of these liquid chromophores is low enough that they are easily processable into optical cells and can be used for nonlinear optical applications. The compounds remain liquids below room temperature, converting to a glass in the range of from about &#x2212;80&#xb0; C. to &#x2212;100&#xb0; C. Neat liquids have a high chromophore concentration (&#x2dc;1 Mole/liter) making possible the development of optical devices requiring materials with a high chromophore concentration.

Liquid transition metal acetylide chromophores

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Vandalia, OH, United States of America

Aaron R Burke