Journal ArticleDOI
Novel Deep Blue OLED Emitters with 1,3,5-Tri(anthracen-10-yl)benzene-Centered Starburst Oligofluorenes
Hong Huang,Qiang Fu,Shaoqing Zhuang,Yakun Liu,Lei Wang,Jiangshan Chen,Dongge Ma,Chuluo Yang,Chuluo Yang +8 more
TLDR
A series of starburst materials (T1−T3) bearing a 1,3,5-tri(anthracen-10-yl)benze-ne core (T0) and three oligofluorenes arms have been synthesized and characterized.Abstract:
A series of starburst materials (T1−T3) bearing a 1,3,5-tri(anthracen-10-yl)benze-ne core (T0) and three oligofluorenes arms have been synthesized and characterized. Single-crystal diffraction analysis has shown that the core of these starburst materials possess a propeller twist topology, which made the starburst materials exhibit good film-forming capabilities and display deep blue emission both in solution and in the thin solid film. The compounds (T1−T3) possess high glass transition temperatures (Tg’s) at 107, 109, and 110 °C, and high decomposition temperatures (Td’s) at 438, 440, and 434 °C, respectively. In addition, the double-layered devices fabricated with the three materials as the emitter show a stable deep-blue emission and the device performance increases with arm length at some extent. The double-layered device based on T2 has a maximum brightness of over 3400 cd/m2 and a maximum current efficiency of 1.80 cd/A with CIE coordinates of (0.149, 0.098), which is among the best of the deep-blu...read more
Citations
More filters
Journal ArticleDOI
Blue fluorescent emitters: design tactics and applications in organic light-emitting diodes
Minrong Zhu,Chuluo Yang +1 more
TL;DR: The key issues on suppressing close-packing, achieving pure blue chromaticity, improving thermal and morphological stabilities, manipulating charge transporting abilities, simplifying device structures and the applications in panchromatic OLEDs are discussed.
Journal ArticleDOI
Construction of Efficient Deep Blue Aggregation-Induced Emission Luminogen from Triphenylethene for Nondoped Organic Light-Emitting Diodes
Wei Qin,Zhiyong Yang,Yibin Jiang,Jacky Wing Yip Lam,Guodong Liang,Hoi Sing Kwok,Ben Zhong Tang,Ben Zhong Tang +7 more
TL;DR: In this paper, a simple but successful molecular design strategy for synthesizing efficient solid-state emitters for non-oped OLEDs with both deep blue and white emissions was reported, which utilizes triphenylethene, a weakly conjugated AIE luminogen, as building block for constructing deep blue emitter, involving no complicated control of emission color through adjustment of the steric hindrance of chromophores, and enables a wide selection of partnered functional units.
Journal ArticleDOI
Recent development of phenanthroimidazole-based fluorophores for blue organic light-emitting diodes (OLEDs): an overview
TL;DR: In this article, the design of phenanthroimidazole (PI)-based blue/deep-blue emitting materials and their applications in OLEDs are discussed, and the rational molecular design concepts and general synthetic routes for PI-based materials are briefly discussed.
Journal ArticleDOI
Unexpected Propeller-Like Hexakis(fluoren-2-yl)benzene Cores for Six-Arm Star-Shaped Oligofluorenes: Highly Efficient Deep-Blue Fluorescent Emitters and Good Hole-Transporting Materials
Yang Zou,Jianhua Zou,Tengling Ye,Hao Li,Chuluo Yang,Hongbin Wu,Dongge Ma,Jingui Qin,Yong Cao +8 more
TL;DR: In this paper, a double-layer electroluminescence (EL) devices using T1T3 as non-doped solution-processed emitters display deep-blue emissions with Commission Internationale de l'Eclairage (CIE) coordinates of (0.17, 0.08) for T1, ( 0.16 and 0.07) respectively for T2 and T3, which are among the highest for hole-transporting materials in identical device structure.
Journal ArticleDOI
Low Turn-on Voltage, High-Power-Efficiency, Solution-Processed Deep-Blue Organic Light-Emitting Diodes Based on Starburst Oligofluorenes with Diphenylamine End-Capper to Enhance the HOMO Level
TL;DR: In this article, two star-shaped oligofluorenes, HFB-diF-Dpa and HFBterF-DPa, with a hexakis(fluoren-2-yl)benzene core and six diphenylamine end-cappers were designed and synthesized.
References
More filters
Journal ArticleDOI
Organic semiconducting oligomers for use in thin film transistors.
Journal ArticleDOI
Electrochemical determination of the ionization potential and electron affinity of poly(9,9-dioctylfluorene)
TL;DR: In this article, cyclic voltammetry measurements for the blue electroluminescent conjugated polymer poly(9,9-dioctylfluorene) were obtained and both oxidation and reduction potentials were determined and estimates of both the ionization potential Ip and electron affinity Ea of the polymer were obtained for the same sample under the same experimental conditions.
Journal ArticleDOI
Synthesis and electroluminescence of novel copolymers containing crown ether spacers
TL;DR: In this paper, three novel copolymers containing alternating 1,4-bis(phenylethenyl)benzene, 2,5-dimethoxybenzenes and crown ether spacers within the polymer backbone were synthesized by the Wittig polycondensation reaction.
Journal ArticleDOI
Unconventional face-on texture and exceptional in-plane order of a high mobility n-type polymer.
Jonathan Rivnay,Michael F. Toney,Yan Zheng,Isaac Kauvar,Zhihua Chen,Veit Wagner,Antonio Facchetti,Alberto Salleo +7 more
TL;DR: Substantial in-plane crystallinity and dominant face-on stacking are observed in thin films of a high-mobility n-type rylene-thiophene copolymer, finding an ordered microstructure at both interfaces, and in the bulk.
Journal ArticleDOI
Understanding the Origin of the 535 nm Emission Band in Oxidized Poly(9,9‐dioctylfluorene): The Essential Role of Inter‐Chain/Inter‐Segment Interactions
Marc Sims,Donal D. C. Bradley,M. Ariu,M. Koeberg,Aristidis Asimakis,Martin Grell,David G. Lidzey +6 more
TL;DR: In this paper, the effects of photo-oxidation on the emissive properties of poly(9,9-dioctylfluorene) (PFO) were investigated.
Related Papers (5)
Blue fluorescent emitters: design tactics and applications in organic light-emitting diodes
Minrong Zhu,Chuluo Yang +1 more