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Electrochromic Inks Based on Electrochemical Deprotection Reactions

IP.com Disclosure Number: IPCOM000047257D
Original Publication Date: 1983-Oct-01
Included in the Prior Art Database: 2005-Feb-07
Document File: 2 page(s) / 24K

Publishing Venue

IBM

Related People

Balanson, RD: AUTHOR [+3]

Abstract

The electrochemical removal of a protecting group affords a powerful method of generating permanent color species. Thus, one can use protected molecules, such as the anthroquinone (I ) below, as the electrochromic ink precursor. These dithiane materials have the advantage of being chemically stable in acidic or basic media as well as stable in air (thus no background coloration). The protected form is colorless while the parent dye is highly colored, e.g.: x and y are chosen to effect (1) the desired water solubility of the precursor protected dye and (2) the desired absorption properties of the electrolyzed dye, e.g.:

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Electrochromic Inks Based on Electrochemical Deprotection Reactions

The electrochemical removal of a protecting group affords a powerful method of generating permanent color species. Thus, one can use protected molecules, such as the anthroquinone (I ) below, as the electrochromic ink precursor. These dithiane materials have the advantage of being chemically stable in acidic or basic media as well as stable in air (thus no background coloration). The protected form is colorless while the parent dye is highly colored, e.g.: x and y are chosen to effect (1) the desired water solubility of the precursor protected dye and (2) the desired absorption properties of the electrolyzed dye, e.g.:

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