dibromoarenes) reacted with diphenols, catalyzed by CuI/Fe(acac)3 in the presence of K2CO3 in anhydrous DMSO at 110 °C for 7 days under nitrogen atmosphere, to afford macrocyclic aryl ethers effectively. To expand this methodology, a cyclic hepta(p-phenylene oxide) and cyclic deca(p-phenylene oxide) were synthesized in one pot. Some macrocyclic aryl ethers showed strong fluorescence in acetone at 25 °C.
在K 2 CO 3的存在下,在无水DMSO中,氮气氛下,CuI / Fe(acac)3催化二碘芳烃(或二溴芳烃)与二酚反应,在110°C的条件下,在氮气氛下,将其催化7天,从而有效地提供了大环芳基醚。为了扩展该方法,在一个罐中合成了环状七(对苯醚)和环状十(对苯醚)。一些大环芳基醚在25°C的丙酮中显示强荧光。
네일건용 와셔 세트 구조
申请人:YOUNGWOO FASTENERS CO., LTD. (주) 영우화스너(119950083608) Corp. No ▼ 134511-0007622
公开号:KR20160001679U
公开(公告)日:2016-05-18
일종의 네일건용 와셔 세트 구조는 다수의 편평상 플라스틱 와셔와 연결봉을 포함한다. 각각의 편평상 플라스틱 와셔의 양면은 모두 평탄면이고, 또한 중앙에 관통공이 구비된다. 연결봉은 각각의 편평상 플라스틱 와셔의 관통공에 관통 설치되어, 각각의 편평상 플라스틱 와셔를 직렬로 중첩 연결시킨다. 그 중 상단에 당김부가 구비되고, 하단에 근접한 부위에 편평상 플라스틱 와셔의 관통홀 직경보다 큰 걸림부가 구비된다. [색인어] 네일건용 와셔 세트 구조, 편평상 플라스틱 와셔, 표면, 오목부, 관통공, 금속 연결봉, 당김부, 걸림부
Novel phosphorescent platinum complexes containing tetradentate ligands are provided. The disclosed compounds have three 6-membered metallocycle units in each tertadentate ligand. The disclosed compounds have desirable electronic properties that make them useful when incorporated into a variety of OLED devices.
Bright, Multi-responsive, Sky-Blue Platinum(II) Phosphors Based on a Tetradentate Chelating Framework
作者:Lijie Liu、Xiang Wang、Nan Wang、Tai Peng、Suning Wang
DOI:10.1002/anie.201705785
日期:2017.7.24
A new class of highly efficient and stable, blue‐phosphorescent PtII complexes based on a tetradentate chelating framework has been found to exhibit highlysensitive and reversible responses to multiple external stimuli including temperature, pressure, and UV irradiation with distinct phosphorescent color switching—from blue to red or white. Intermolecular excimer formation is the main origin of this
Composition for film formation and material for insulating film formation
申请人:JSR CORPORATION
公开号:US20020172652A1
公开(公告)日:2002-11-21
A composition for film formation capable of forming a coating film excellent in low dielectric constant characteristics, cracking resistance, modulus of elasticity, and adhesion to substrates and useful as an interlayer insulating film material in semiconductor devices, etc. The composition for film formation contains (A) at least one member selected from an aromatic polyarylene and an aromatic poly (arylene ether), (B) a polyvinylsiloxane, and (C) an organic solvent.