electronic and photophysical properties of their corresponding heteroleptic Ir(III) complexes. The complexes showed reversible redox characteristics. Hole-only single-carrier devices indicated that three complexes all possessed excellent hole-transporting ability. The phosphorescent OLEDs using three Ir(III) complexes as dopants exhibited turn-on voltages of ca. 4 V, maximum current efficiencies of 22
基于2-(4-(9 H)的磷光健壮杂原子铱(III)[Ir(III)]配合物设计,合成并结合了三种辅助配体的-咔唑-9-基)苯基)苯并噻唑用于制造有机发光二极管(OLED)。Ir(III)络合物在室温下发出强烈的磷光,呈黄色或橙色,具有高量子效率和相对较短的寿命。辅助配体极大地影响了它们相应的杂配的Ir(III)配合物的电子和光物理性质。该配合物显示出可逆的氧化还原特性。仅空穴的单载体装置表明三个复合物都具有优异的空穴传输能力。使用三种Ir(III)配合物作为掺杂剂的磷光OLED的导通电压约为。4 V,最大电流效率为22.3–44.2 cd A -1和LM 18.3-23.3的最大功率效率w ^ -1,这是优于(BT)2的Ir(ACAC)基设备(19.1光盘-1,9.3流明w ^ -1相同的条件下)。基于新的Ir(III)配合物作为发射体的器件性能的提高可能归因于空穴传输的刚性咔唑部分,从
Study of the influences of molecular planarity and aluminum evaporation rate on the performances of electrical memory devices
作者:Hongzhang Liu、Rongcheng Bo、Haifeng Liu、Najun Li、Qingfeng Xu、Hua Li、Jianmei Lu、Lihua Wang
DOI:10.1039/c4tc00311j
日期:——
We achieve different storage types by increasing the rate of evaporation of aluminum for the device based on TPA-BT, which has poor planarity.
我们通过增加基于TPA-BT的设备中铝的蒸发速率来实现不同的存储类型,该设备具有较差的平整度。
LIGHT EMITTING MATERIAL, COMPOUND, AND ORGANIC LIGHT EMITTING DEVICE USING THE SAME
申请人:KYUSHU UNIVERSITY NATIONAL UNIVERSITY CORP.
公开号:US20150239880A1
公开(公告)日:2015-08-27
To provide a material useful as a light emitting material of an organic light emitting device. A light emitting material comprising a compound represented by the general formula (1) wherein X represents O, S, N—R
11
, C═O, C(R
12
)(R
13
), or Si(R
14
)(R
15
); Y represents O, S, or N—R
16
; Ar
1
represents a substituted or unsubstituted arylene group, and Ar
2
represents an aromatic ring or a heteroaromatic ring; and R
1
to R
8
and R
11
to R
16
each independently represent a hydrogen atom or a substituent.
Ligand Combination Approach in Pd‐Catalyzed Direct C−H Arylation of Benzothiazole and Benzoxazole
作者:Sneha Prasad Bakare、Mahendra Patil
DOI:10.1002/ejoc.202301013
日期:2024.1.8
Two is better than one! A combination of two ligands (Phen.H2O and PPh3) with Pd catalyst offers a highly efficient catalytic system for the direct C−H arylation of benzothiazole and benzoxazole with aryl halides. Mechanistic studies including kinetic isotope effect experiments and computational investigations suggests that two ligands may work cooperatively to enhance the catalytic activity in the
Carbazole fluorophore with an imidazole/thiazole unit: contrasting stimuli-induced fluorescence switching, water-sensing and deep-blue emission
作者:Sasikala Ravi、P. R. Nithiasri、Subramanian Karthikeyan、Mehboobali Pannipara、Abdullah G. Al-Sehemi、Dohyun Moon、Savarimuthu Philip Anthony
DOI:10.1039/d3ra01897k
日期:2023.4.17
the standard quinine sulfate) and solid-state (Φf = 8.0% (Cz-I) and 14.6% (Cz-T)). Cz-I showed relatively more blue-shifted emission in solution compared with the solid-state (λmax = 417 nm (CH3CN) and 460 nm (solid)). Cz-T exhibited deep-blueemission in the solid-state compared with solution (λmax = 455 nm (CH3CN) and 418 nm (solid)). Interestingly, Cz-T exhibited a drastic change in fluorescence in