2,7-bis(2-methylphenyl)-9H-fluoren-9-one | 28799-16-8

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 二芳基庚烷
• 英文名称: 2,7-bis(2-methylphenyl)-9H-fluoren-9-one
• 英文别名: 2,7-Di-o-tolyl-fluoren-9-on；2,7-Bis(2-methylphenyl)fluoren-9-one
• CAS: 28799-16-8
• 化学式: C₂₇H₂₀O
• 分子量: 360.455
• InChiKey: FEAWILXZINZXNN-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  7
• 重原子数：
  28
• 可旋转键数：
  2
• 环数：
  5.0
• sp3杂化的碳原子比例：
  0.07
• 拓扑面积：
  17.1
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为产物：
  描述：

  2,7-二溴-9-芴酮 、 2-甲基苯硼酸 在 四(三苯基膦)钯 、 potassium carbonate 作用下， 以 乙醇 、 水 、 甲苯 为溶剂， 反应 3.0h， 以78%的产率得到2,7-bis(2-methylphenyl)-9H-fluoren-9-one
  参考文献：
  名称：

  Aggregation-induced bathochromic fluorescent enhancement for fluorenone dyes

  摘要：

  Organic solid-state luminescence materials with aggregation-induced emission enhancement have attracted considerable interest in recent years. In this work, we develop a class of 2,7-diphenylfluorenone derivatives that exhibit prominent aggregation-induced emission properties with high solid-state quantum yields. Their solid-state powders show a similar to 160 nm bathochromically shifted fluorescence and longer lifetime compared to their emission in dilute THF solution. The X-ray single structures and photophysical properties reveal that the mechanism of aggregation-induced emission in this class of fluorenone compounds is due to the formation of static excimers through hydrogen bonds in the solid state. The emission of their THF solution peaked at 380 nm and originates from the single molecule and the emission of their solid-state powder peaked at 550 nm originates from the excimers. The aggregation-induced emission properties and luminescence mechanism are further verified by the design of 2,7-diphenylfluorenone-diboronic acid adduct, which exhibited weak luminescence in high pH buffer and red-shifted strong luminescence in acidic buffer. (C) 2015 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.dyepig.2015.08.011

文献信息

• PROCESS FOR PREPARING OLEFIN POLYMER USING MIXED CATALYST
  申请人：Yukita Takashi

  公开号：US20110077369A1

  公开（公告）日：2011-03-31

  [Problem] To efficiently obtain an α-olefin polymer having a high melting point and a high molecular weight. [Solution to Problem] The process for preparing an olefin polymer of the present invention is a process for preparing an olefin polymer, comprising polymerizing at least one monomer selected from α-olefins of 2 or more carbon atoms, wherein the polymerization is carried out at a temperature of not lower than 40° C. in the presence of a catalyst comprising a transition metal compound component (A) which comprises two or more kinds of transition metal compounds (a) represented by the following formula [A1] and an organometallic compound component (B) which comprises an organometallic compound (b), propylene is contained in the monomer, and the olefin polymer is an olefin polymer whose weight-average molecular weight (Mw) and number-average molecular weight (Mn), as determined by gel permeation chromatography (GPC), satisfy the relationship of 1≦(Mw/Mn)≦3, and which has a melting point (Tm), as determined by DSC, of not lower than 150° C. and an intrinsic viscosity ([η]) of not less than 1.5 dl/g.

  [问题] 高效地获得具有高熔点和高分子量的α-烯烃聚合物。 [解决方案] 本发明的烯烃聚合物制备过程是一种制备烯烃聚合物的过程，包括聚合选择自2个或更多碳原子的α-烯烃中的至少一个单体，其中在催化剂的存在下在不低于40℃的温度下进行聚合反应，所述催化剂包括由以下式[A1]所表示的两种或两种以上的过渡金属化合物（a）组成的过渡金属化合物组分（A）和包括有机金属化合物（b）的有机金属化合物组分（B），单体中含有丙烯，并且通过凝胶渗透色谱法（GPC）确定的重均分子量（Mw）和数均分子量（Mn）满足1≦（Mw/Mn）≦3，其熔点（Tm）不低于150℃，固有粘度（[η]）不小于1.5 dl/g的烯烃聚合物。
• US8293856B2
  申请人：——

  公开号：US8293856B2

  公开（公告）日：2012-10-23