BODIPY platform: a tunable tool for green to NIR OLEDs. Issue 1 (2nd January 2020)

• Record Type: Journal Article
• Authors: Squeo, Benedetta Maria; Pasini, Mariacecilia
• Is Part Of: Supramolecular chemistry. Volume 32:Issue 1(2020)
• Page Start: 56
• Page End: 70
• Publication Date: 2020-01-02
• Subjects: BODIPY -- OLED -- optoelectronic devices; Macromolecules -- Periodicals; Supramolecular chemistry -- Periodicals; 547.005
• DOI: 10.1080/10610278.2019.1691727
• Languages: English
• ISSNs: 1061-0278

Abstract

ABSTRACT: The rapid appearance of organic optoelectronics as a promising alternative to conventional optoelectronics has been largely achieved through the design and development of new conjugated systems. The 4, 4-difluoro-4-bora-3a, 4a-diaza-s-indacene (BODIPY)-based materials have recently emerged as platforms for many types of applications such as sensors, organic thin-film transistors and organic photovoltaics; however, their application as active materials in organic light-emitting diodes (OLEDs) has only been poorly explored. This review article provides an overview of the most important developments in the structural design and synthesis of BODIPY-based organic semiconductors for application in OLED devices. The results summarised and discussed here include the most relevant results starting from the first application of BODIPY-based materials in OLEDs in 2002 up to the recent discoveries as near-IR emitters also promoted by aggregation-induced emission (AIE). Therefore, this review should inspire new research for future developments of BODIPY-based materials, in particular as 'metal-free' infrared emitters. Abbreviations: ACQ: aggregation caused quenching; AIE: aggregation induced emission; Alq3 : aluminium tris(8-hydroxyquinoline); BCP: 2, 9-dimethyl-4, 7-diphenyl-1, 10-phenanthroline); BDP-PPV: poly(bis(3″, 7″-dimethyloctyloxy))p-phenylene vinylene; BF3 OEt2 : boron trifluoride diethyletherate; BPhen: bathophenanthroline; CBP: 4, 40-bis[N-carbazolyl]-2, 20-biphenyl; CIE: Commission Internationale de l'Eclairage; DDQ: dichloro-dicyano-quinone; EL: electroluminescence; F8BT: poly(9, 9-dioctylfluorene-alt-benzothiadiazole); ITO: indium tin oxide; LEC: light-emitting electrochemical cell; m-MTDATA: 4, 4ʹ, 4ʹ'-tris[phenyl(m-tolyl)amino]triphenylamine; NPB: N, N′-bis(naphthalen-1-yl)-N, N′-bis(phenyl)benzidine; NPD: N, N'-di(1-naphtyl)-N, N'-diphenylbenzidine; OLED: organic light-emitting diode; OPV: organic photovoltaic; OXD-7: 2, 2′-(1, 3-phenylene)-bis[5-(4-tert-butylphenyl)-1, 3, 4-oxadiazole; PBD: 2-(4-biphenylyl)-5(4tert-butyl-phenyl)-1, 3, 4-oxadiazole; PEDOT: poly(3, 4-ethylenedioxythiophene); PLED: polymeric light-emitting diodes; PMMA: polymethylmetacrilate; PPT: 2, 8-bis(diphenylphosphoryl)dibenzo[b, d]thiophene; PSS: polystyrene sulphonic sodium salt; PVK: poly(9-N-vinylcarbazole); TPBi: 2, 2ʹ, 2"-(1, 3, 5-Benzinetriyl)-tris(1-phenyl-1-H-benzimidazole); TPE: tetraphenylethylene; WOLED: white organic light-emitting diode; 3-TPyMB: tris(2, 4, 6-trimethyl-3-(pyridin-3-yl)phenyl)borane Graphical abstract: