EP 1015524 A1 20000705 - ELECTROCHROMIC SYSTEM WITH COUPLED RED-OX SYSTEM AND SPECIAL ANIONS
Title (en)
ELECTROCHROMIC SYSTEM WITH COUPLED RED-OX SYSTEM AND SPECIAL ANIONS
Title (de)
ELEKTROCHROMES SYSTEM MIT GEKOPPELTEM RED-OX-SYSTEM UND SPEZIELLEN ANIONEN
Title (fr)
SYSTEME ELECTROCHROME A SYSTEME RED-OX ACCOUPLE ET ANIONS SPECIAUX
Publication
Application
Priority
- DE 19735733 A 19970818
- EP 9804909 W 19980806
Abstract (en)
[origin: DE19735733A1] Coupled electrochromic substances (I) have covalent bridge(s) linking oxidizable group(s), which yield electrons at an anode, and reducible group(s), which accept electrons at a cathode, which are converted from weakly coloured or colourless forms to coloured forms, with an increase in the visible extinction, and revert when the charge is equalised. (I) are of formula:Y(BZ)a(BY)bcBZ (where, Y, Z = OX2 or RED1 groups, with at least one Y = OX2 and at least one Z = RED1; OX2 = the residue of a cationic redox system undergoing reversible electrochemical reduction with an anion X<-> as counterion; RED1 = the residue of a redox system capable of reversible electrochemical oxidation; B = a bridging group; a, b, c = 0-5; X<-> = an anion which (a) has a molecular weight of over 200, preferably over 250 g/mole and/or is (almost) spherical and has a pronounced delocalisation of the negative charge). Independent claims are also included for (a) an electrochromic system; (b) an electrochromic liquid containing this system and inert solvent(s); and (c) an electrochromic device containing the liquid.
IPC 1-7
IPC 8 full level
C09K 9/02 (2006.01); G02F 1/1516 (2019.01)
CPC (source: EP KR US)
C09K 9/02 (2013.01 - EP KR US); G02F 1/1516 (2018.12 - EP KR US); G02F 2001/1502 (2013.01 - EP KR US); G02F 2001/15145 (2018.12 - EP KR US); Y10T 428/31504 (2015.04 - EP US)
Citation (search report)
See references of WO 9909111A1
Designated contracting state (EPC)
AT DE ES FR GB IE IT NL SE
DOCDB simple family (publication)
DE 19735733 A1 19990225; AU 733812 B2 20010524; AU 9339398 A 19990308; CA 2300131 A1 19990225; EP 1015524 A1 20000705; JP 2001515120 A 20010918; KR 20010022994 A 20010326; US 2002197486 A1 20021226; US 6417951 B1 20020709; US 6767481 B2 20040727; WO 9909111 A1 19990225
DOCDB simple family (application)
DE 19735733 A 19970818; AU 9339398 A 19980806; CA 2300131 A 19980806; EP 9804909 W 19980806; EP 98946284 A 19980806; JP 2000509781 A 19980806; KR 20007001602 A 20000217; US 15033502 A 20020517; US 48575800 A 20000215