Improving the performance of polymer light-emitting devices with chemical tools

Abstract

This review presents the strategies that have been employed to build polymer light-emitting devices as far as the chemical design of fully conjugated polymers and device structure engineering are concerned. In particular, it gives an overview of the wealth of materials used as single emissive layers imagined by chemists in the quest for the improvement of the efficiency of devices with simplified structures. We give selected examples of the efforts made to synthesize materials that can transport both positive and negative charge carriers. The last part is devoted to the attention paid to highly emissive materials with a special focus on single conjugated electro-phosphorescent polymers.

Enhancing the electroluminescence performances of novel platinum(ii) polymetallayne-based phosphorescent polymers through employing functionalized IrIII phosphorescent units and facilitating triplet energy transfer

“…16 Despite that some other highly efficient phosphorescent polymers has been reported, 38,[40][41][42][43][44][45][46] most of them typically show h L less than 5.0 cd A À1 . 47,48 Hence, compared with the general EL performances of the phosphorescent polymers, these novel orange phosphorescent polymers denitely can show very attractive EL performances, indicating the great potential of the novel polymer skeleton for achieving highly efficient phosphorescent polymers. The obtained EL data are just preliminary results.…”

Chain shape and thin film behaviour of poly(thiophene)-graft-poly(acrylate urethane)

“…Conjugated polymers (CPs) are organic electronic materials with tunable opto-electronic properties, and solubility and functionality through side chain engineering. [1][2][3][4] Primarily, small substituents, such as alkyl chains, have been incorporated as solubilising agents, 3 allowing for CPs to be readily processable and printable for large-scale fabrication of organic electronics, including field-effect transistors, 5 light emitting diodes, 6 and photovoltaics. 7 In addition to opto-electronic properties, the electrochemical properties of CP films are also widely exploited for various applications, including electrochromic devices, 8 biosensors, 9 drug delivery 10 and batteries.…”

Copolymerization of N -(prop-1-yne-3-yl)-4-(piperidine-1-yl)-1,8-naphthalimide with Arylacetylenes into Fluorescent Polyacetylene-Type Conjugated Polymers

“…The relation between the structure of 1,8‐naphthalimides and their emission properties is known in considerable detail . Because of the wide properties tunability the 1,8‐naphthalimide luminophores are suitable for use (i) in the field of electronics and laser techniques, (ii) as dichroic dyes in liquid‐crystalline systems of the host–guest type, or (iii) as sensing materials and markers in medicine . Their usage as chemosensors is also known from the literature …”