Novel cross-linkable hole-transport monomer for use in organic light emitting diodes

Covalent Patterning and Rapid Visualization of Latent Fingerprints with Photo-Cross-Linkable Semiconductor Polymer Dots

“…31 As shown by the FTIR spectra of do-PFO polymer (Figure 2d), the absorption band at 980 cm −1 is attributable to the cyclic ether linkage of the oxetane ring. 32 The characteristic band of oxetane ring disappeared after UV irradiation, accompanied by …”

Physical Processes in Polymer‐Based Electrophosphorescent Devices

“…These multilayer structures contained crosslinked layers of hole -transporting molecules. Details about the molecular structure and fabrication of these layers can be found elsewhere [25,81,82] . In the structures studied by us, one or two of these crosslinked hole -transporting layers (X -HTLs) were deposited onto ITO/PEDOT : PSS anodes, followed (after proper crosslinking) by the deposition of the PVK : PBD : Ir(mppy) 3 emission layer from solution.…”

Electronic Formulations—Photopatterning of Luminescent Conjugated Polymers

“…The photocrosslinking functionality, however, has so far been introduced directly on the chains of luminescent polymers and not so much via blending, [9] let alone through using a formulation that involves several ingredients. The reports on crosslinkable light-emitting polymers include single-and multilayer devices [10][11][12] as well as photopatterned devices [13][14][15] that are based on the synthesis of new polymers in which the crosslinkable moiety is a side group of a functional (luminescent) polymer. The photoinitiated crosslinking method renders the exposed parts of the film insoluble and, hence, allows for multilayer deposition (from solution) as well as standard photolithographic resolution.…”

“…For these three reasons we chose to develop a block copolymer incorporating oxetane crosslinkable groups and triarylamine. Oxetane groups were chosen since they are known [10] to undergo a facile photoactivated crosslinking reaction with minimal shrinkage, thus avoiding cracking of the crosslinked layer. The triarylamine was selected largely since the luminescent-materials family with which the crosslinkable polymer should be compatible was chosen to be the family of the poly(p-phenylenevinylene)s (PPVs) described in the paper by Becker et al [18,19] The chemical structure of a representative of this polymer family, which emits green light, is shown in Figure 1a.…”