Electroluminochromic Materials and Devices Based on Metal Complexes

Abstract

Electroluminochromism (ELC) refers to an interesting phenomenon exhibitedb yamaterial whose luminescent properties can be reversibly modulated under an electrical stimulus. Such al uminescence-switchingp roperty has been widely used in variouso rganic optoelectronic devices because it can simultaneously detect electrical and optical signals. Metal complexes are the promising candidates for ELC materials due to their sensitivityt oa ne lectrical stimulus. Herein, recent progress on electroluminochromic materials and devices based on various metal complexes has been summarized. Meanwhile, the applicationso ft hese complexes in datar ecording and security protection have also been discussed. Finally,abrief conclusion and outlook are presented, pointingo ut that the development of electroluminochromic metal complexes with excellent performance is important because they play av ital role in future intelligent optoelectronic devices.

Tuning the luminescence of transition metal complexes with acyclic diaminocarbene ligands

“…Luminescent transition metal complexes underpin the development of OLEDs and other electroluminescent technologies (for the main reviews on the topic see ref. [1][2][3][4][5][6][7][8][9][10], and a broad range of applications in the fields of luminescence chemosensing, [11][12][13] photocatalysis, [14][15][16] sensitisation, [17][18][19] selfassembled materials, 20 and bioimaging. [20][21][22][23] Although pure organic light emitters are predominantly fluorescent (triplet excitons formed are deactivated by thermal processes), the presence of strong spin-orbit coupling in transition metal complexes upholds the intersystem crossing from the singlet to the triplet state enabling phosphorescent relaxation.…”

Towards modulating the colour hues of isoindigo-based electrochromic polymers through variation of thiophene-based donor groups

“…For some EC materials, their photoluminescence properties may even be modulated, which is termed electroluminochromism. 5,6 To date, different classes of EC materials have been reported and developed, [7][8][9] including metal oxides, [10][11][12][13] metal complexes, [14][15][16][17][18][19] organic molecules [20][21][22][23][24] and organic polymers. [25][26][27][28][29] Compared to traditional inorganic EC materials, organic polymers offer the advantages of lower production cost and toxicity, better flexibility, lightweightness, and solution processability.…”

From gas separation to ion transport in the cavity of hyperbranched polyamides based on triptycene aimed for electrochromic and memory devices

“…Electrochromism is defined as a phenomenon in which the optical properties of a material undergo a reversible change under an applied electric field. 1 Among the various EC materials, polymers have attracted intense attention due to the merits of large-scale fabrication of the film, tailorable structure and optical spectrum modulation. The EC polymers are generally of two kinds: the common one is conducting polymers (CPs) such as polyaniline, polythiophene and polypyrrole; the other is high performance polymers (HPPs) such as polyamide (PA), polyimide (PI), polyurethane (PU), etc .…”