METHOD FOR PREPARING ORGANIC RADICAL COMPOUND COMPRISING 4-PHOSPHONOOXY-TEMPO OR DERIVATIVE THEREOF

• Main Authors: SAWADA SHINICHI, TAGAYA MOTOHIRO, TSUBOI HISANORI, RI URI, ONO KASUMI
• Format: Patent
• Language: English
• Published: 26.02.2009
• Subjects: DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

PROBLEM TO BE SOLVED: To provide a method for preparing an organic radical compound (4-Phosphonooxy-TEMPO) to be used for an electrochromic device, and to provide an electrochromic device using the compound. SOLUTION: The 4-phosphonooxy-TEMPO is synthesized by reacting 4-hydroxy-TEMPO with phosphoryl chloride or phosphoryl bromide in an organic solvent in the presence of a basic compound, followed by reacting with water. An electrochromic device 10 is equipped with: a display electrode structure 11 including a first support substrate 1, a first transparent electrode 2 and a first porous electrode 4; a counter electrode structure 12 including a second support substrate 6, a second transparent electrode 7 and a second porous electrode 8; and an electrolytic layer 5 held between the both structures, wherein an electrochromic compound 3 is deposited on the first porous electrode 4, the 4-phosphonooxy-TEMPO (13) is deposited on the second porous electrode 8, and reversible coloring and decolorizing by the electrochromic compound is carried out by controlling a voltage to be applied between the first and second transparent electrodes. COPYRIGHT: (C)2009,JPO&INPIT