Synthesis and Superior Optical‐Limiting Properties of Fluorene‐Thiophene‐Benzothiadazole Polymer‐Functionalized Graphene Sheets

A polymer based on fluorene, thiophene, and benzothiadazole as the donor–spacer–acceptor triad is covalently coupled to reduced graphene oxide (rGO) sheets via diazonium coupling with phenyl bromide, followed by Suzuki coupling. These polymer–graphene hybrids show good solubility in organic solvents, such as chloroform, tetrahydrofuran (THF), toluene, dichlorobenzene, and N,N‐dimethylformamide (DMF), and exhibit an excellent optical‐limiting effect with a 532‐nm laser beam. The optical‐limiting threshold energy values (0.93 J cm^?2 for G–polymer 1 and 1.12 J cm^?2 for G–polymer 2) of these G–polymer hybrids are better than that of carbon nanotubes (3.6 J cm^?2).     

工业芴组份的测定

本文应用CBP^TM-5毛细管柱,对工业芴中各组份含量进行测定。结果表明：应用该色谱分析方法,色谱峰形较好,物质组份分离好,色谱柱的柱效高,分析结果的准确度和灵敏度高,能满足样品分析的要求。     

Synthesis and Crystal Structure of Novel Emitting Material 9,9-Bis(buthoxycarbonylethyl) fluorene

Synthesis of 9,9-bis(buthoxycarbonylethyl)fluorine(C27H34O4, Mr=422.54) with butyl acrylate as alkylation reagent and fluorene as starting material has been performed. The crystal structure was measured by using the X-ray diffraction method.The crystal belongs to monoclinic, space group P2(1)/c with parameters as: a=1.2912(1)nm, b=1.0974(1)nm, c=1.7468(1)nm, β=90.252(2), V=2.4752(4)nm3, Z=4, Dcacl=1.134 g·cm-3, λ=0.071 073 nm, μ(MoKα)=0.075mm-1, F(000)=912, R=0.0651 and wR=0.1475. X-ray analysis reveals tha...     

9,9-双（甲氧基甲基）芴的合成及其应用研究

9,9-双（甲氧基甲基）芴（BMMF）的合成分两步进行：首先,在乙醇钠催化剂的作用下,芴与多聚甲醛反应合成了中间体9,9-双（羟甲基）芴（BHMF）,然后以四丁基溴化铵（TBAB）为相转移催化剂,再与氯甲烷发生烷基化反应合成了9,9-双甲氧基甲基芴。用9,9-双（羟甲基）芴作外给电子体进行了丙烯聚合应用,实验结果表明：9,9-双（甲氧甲基）芴（BMMF）是聚丙烯Ziegler-Natta催化体系较好的外给电子体。     

2-溴芴酮的合成

以煤焦油分离产品芴为原料,通过溴代、氧化反应制得2-溴芴酮,对氧化过程中不同溶剂及用量、碱的用量、反应时间对产率的影响进行了优化选择。较佳的反应条件为:四氢呋喃作溶剂,m(2-溴芴)∶m(四氢呋喃)=1∶5.5,n(2-溴芴)∶n(氢氧化钾)=10∶1,室温反应5h,2-溴芴酮的产率大于98.0%,质量分数高于98.0%。产物的结构通过红外和核磁共振波谱进行了表征。     

芴的提取精制研究进展

芴是重要的有机化工原料，多从煤焦油的洗油馏份中提出，也可从葸油中提出。芴的提取精制过程是先间歇蒸馏洗油馏份或蒽油馏份切取芴主馏份，再采用冷却结晶法或溶剂结晶法精制芴主馏份得到芴。     

一类含二异丙基芴结构可溶性聚芳醚酮的合成及表征

以9-芴酮和2-异丙基苯酚为起始原料,经一步有机反应,合成了一种含二异丙基芴结构双酚单体9,9-双(3-异丙基-4-羟基苯基)芴(IPBF)。将该单体分别与4,4’-二氟二苯甲酮,1,4-双(4-氟苯甲酰基)苯经高温溶液缩聚,制备了一类可溶性聚芳醚酮。该类聚芳醚酮表现出优异的溶解性能,常温下不仅能溶于高沸点溶剂N-甲基吡咯烷酮(NMP)、二甲基乙酰胺(DMAc)和二甲基甲酰胺(DMF)中,还能溶于低沸点的CHCl3、四氢呋喃(THF)等溶剂中。由该类聚合物溶液涂覆所制薄膜表现出良好的热学性能及力学性能,其在空气和氮气中10%热失重温度都在400℃以上,膜最大拉伸强度达65 MPa。此外,该系列聚芳醚酮还具有浅的颜色和较好的光学透明性。     

双酚芴合成技术研究

论述双酚芴的合成技术，选择合适的合成路线，以提升焦化产品工业芴及芴酮的产品附加值。     

Evaluation of PAH: DNA Adduct Formation in Rats Fed Coal Tar-Contaminated Diets

Previous studies have demonstrated that mouse lung is a target organ for the tumorigenic and genotoxic effects of coal tar. The present study evaluated PAH:DNA adduct formation in lung, liver, forestomach, and mammary gland of female CD rats fed various types of coal tar-contaminated diets. Coal tar-contaminated soil, an organic extract of contaminated soil, neat coal tar, and diets containing only B[ a ]P were evaluated. Ingestion of coal tar diets resulted in detectable levels of DNA adducts in lung and forestomach tissue. These adducts were primarily derived from benzo[ c ]fluorene and B[ a ]P. The adduct derived from benzo[ c ]fluorene was the most predominant. No adducts were detected in liver and mammary gland under the conditions employed in this study. The formation of a benzo[ c ]fluorene-derived DNA adduct in rat lung following coal tar exposure is consistent with previous studies performed with mice.     

新型含芴Schiff碱化合物的合成及其紫外-可见光谱性能研究

通过9-芴甲醛与相应的芳胺衍生物反应合成了两种新型含芴Schiff碱化合物:9-亚甲基19-亚(2-氨基芴)基芴和9-亚甲基-9-亚(2-甲基苯胺)基芴,其结构经核磁共振谱、红外光谱和质谱表征.吸收光谱法测定了两种含芴Schiff碱衍生物在乙醇、四氢呋喃、环己烷和氯仿中的最大吸收波长(λmax),并探讨了分子结构和溶剂...