芴酮在合成功能高分子方面的应用

介绍了由芴酮合成的双酚芴在高分子材料方面的应用，尤其是在环氧树脂、聚碳酸酯、有机玻璃方面，与双酚A相比，用双酚芴改性的高分子材料具更高的耐热性及透明性。     

四相相转移催化氧化芴制备芴酮

该文利用气-质联用仪确证了芴中杂质的结构和含量。反应物和产物的物料衡算揭示:在以二甲苯和水为溶剂,氢氧化钠为催化剂、季铵盐为相转移剂、空气为氧化剂氧化悬浮于二甲苯中的芴制备芴酮的反应中,芴的转化率为100%;芴100%的转化成芴酮和水,无其他副产物;反应前后原料芴中的杂质数目没有变化,每个杂质的物质的量也保持相等。用纯芴在相同的条件进行氧化反应,芴的转化率为100%,得到纯度100%的芴酮,验证了前述结果。从反应液中分离出芴酮后,溶剂、催化剂、相转移剂、水均可循环使用。同时讨论了反应的机理。     

2-苯基苯甲酰胺的合成新工艺

研究了水分含量对氨基化钠裂解芴酮制备２－苯基苯甲酸胺收率的影响。采用甲苯共沸脱水干燥芴酮,使体系含水量降至０．１％以下,进而与商品氨基化钠反应,芴酮与氨基化钠摩尔比为１：１．９,反应温度为９５℃,反应时间为４ｈ,２－苯基苯甲酰胺的收率达９０％。     

2，4，7-三硝基芴酮的合成

以芴酮为原料,在水中与硝酸、硫酸的混合酸进行硝化反应制备2,4,7-三硝基芴酮,所得收率高于94％,纯度高于98％。与传统制备方法相比较,本法收率高,成本低,环境污染小,易实现工业化。所得产物的结构经过红外、核磁波谱的表征。     

液体喷射环流反应器在液相催化氧化制备芴酮中的应用

以液体喷射环流反应器为氧化反应装置,液相催化氧化芴制备芴酮。通过考察物料循环速度、反应温度、催化剂用量和溶剂的含水量等因素对芴酮收率的影响,得出最佳氧化反应条件。     

Visible‐Light Excited Luminescent Thermometer Based on Single Lanthanide Organic Frameworks

Isostructural lanthanide organic frameworks (Me₂NH₂)₃[Ln₃(FDC)₄(NO₃)₄]·4H₂O (Ln = Eu ( 1 ), Gd ( 2 ), Tb ( 3 ), H₂FDC = 9‐fluorenone‐2,7‐dicarboxylic acid), synthesized under solvothermal conditions, feature a Ln‐O‐C rod‐packing 3D framework. Time‐resolved luminescence studies show that in 1 the energy difference between the H₂FDC triplet excited state (17794 cm^?1) and the ⁵D₀ Eu³⁺ level (17241 cm^?1) is small enough to allow a strong thermally activated ion‐to‐ligand back energy transfer. Whereas the emission of the ligand is essentially constant the ⁵D₀→⁷F₂ intensity is quenched when the temperature increases from 12 to 320 K, rendering 1 the first single‐lanthanide organic framework ratiometric luminescent thermometer based on ion‐to‐ligand back energy transfer. More importantly, this material is also the first example of a metal organic framework thermometer operative over a wide temperature range including the physiological (12‐320 K), upon excitation with visible light (450 nm).     

具有芴酮结构聚芳亚胺的合成及性能

以含有芴结构的芳香二胺单体3,6-二氨基-9-芴酮和不同结构的二溴化合物为底物,通过钯催化C-N交叉偶联缩聚反应合成了三种新型具有芴酮官能团的聚芳亚胺(PIKF)。其数均分子量(-Mn)在3400~4300之间,重均分子量(-Mw)在10200~13800之间,分散系数(-Mw/-Mn)为3.00~3.34。由TG和DSC测定了PIKF的耐热性能,该聚合物具有良好的耐热稳定性(Tg≥200℃,Td>500℃)。通过对PIKF的光学特性测定表明该聚合物具有良好光学性能,其UV-Vis最大吸收波长为455nm和600nm;最大荧光发射波长因PIKF结构的不同而不同,主要是由于不同聚合物主链结构π电子离域不同。     

Understanding the Nature of the States Responsible for the Green Emission in Oxidized Poly(9,9‐dialkylfluorene)s: Photophysics and Structural Studies of Linear Dialkylfluorene/Fluorenone Model Compounds

Here, the optical properties of a series of structurally well‐defined model compounds for oxidatively degraded poly(dialkylfluorenes) (PFs) are reported. Specifically, linear compounds comprising one, two, or four dihexylfluorene (F) moieties together with one fluorenone (O) moiety placed either at the end or in the center of each chain (i.e., FO, FFO, FOF, FFOFF) are studied. The results support the recent observation that the photophysics of the fluorenone‐centered “pentamer” (FFOFF) is most similar to that of oxidized PFs. They further demonstrate that molecule–molecule interaction is essential to activate the green emission band. Investigations by X‐ray diffraction (XRD) identify the solid‐state structure of a representative member of this class of compounds and reveal inter‐molecular interaction through dipole–dipole coupling between neighboring fluorenone moieties.     

芴酮类双席夫碱化合物的合成与晶体结构

以芴为原料,合成两种新的标题化合物.所得产物的结构通过红外光谱、核磁共振谱、元素分析、质谱表征.通过单晶X-射线衍射对产物进行晶体结构的确定.     

含芴酮桥基纯有机光敏染料的合成及性能

设计合成了以芴酮为π桥基的纯有机光敏染料BFA,并利用高分辨质谱(HRMS)、核磁共振氢谱(1HNMR)及核磁共振碳谱(13CNMR)对其结构进行了表征。研究了该染料的光物理和电化学性质,并将其应用于染料敏化太阳能电池(DSSCs)的制作中。在100 mW/cm2(AM 1.5)模拟太阳光的照射下,由其所制作的敏化太阳能电池的光电转换效率为2.51%;开路电压(Voc)、短路电流密度(Jsc)、填充因子(FF)分别为0.73 V、4.46 mA/cm2和0.77。