异吲哚啉及异吲哚啉酮颜料（二）

该文重点讨论了异吲哚啉及异吲哚啉酮颜料的品种,分子结构,特性与应用;颜料的合成工艺,颜料化和相关中间体.该类颜料以黄色品种为主,由于存在分子间及分子内氢键、并构成立体的网状堆砌,具有优异的牢度性能和重要用途.     

异吲哚啉及异吲哚啉酮颜料(一)

该文重点讨论了异吲哚啉及异吲哚啉酮颜料的品种,分子结构,特性与应用;颜料的合成工艺,颜料化和相关中间体.该类颜料以黄色品种为主,由于存在分子间及分子内氢键、并构成立体的网状堆砌,具有优异的牢度性能和重要用途.     

异吲哚啉酮系列高档有机颜料的研究和开发

介绍了异吲哚啉酮优异的着色强度和耐光性能，制备方法及应用。     

异吲哚啉基体高档有机颜料

本文制备了异吲哚啉基体高档有机颜料,并对其化学结构、制备方法、性质及应用进行了讨论。     

异吲哚啉衍生物的合成及应用进展

作为一类结构特殊且具有多种用途的重要含氮杂环化合物,异吲哚啉衍生物在医药化工等行业发挥着重要作用,尤其在药物分子设计合成及染料领域有着重要的应用。近年来,异吲哚啉及其衍生物的合成得到了快速的发展,各种异吲哚啉衍生物被合成,尤其是多取代异吲哚啉衍生物的合成及活性研究得到了广泛的关注。本文综述了异吲哚啉衍生物的合成方法,并对其在医药和化工领域的应用进行了介绍。     

1,3-二亚氨基异吲哚啉合成工艺及应用研究进展

1?3-二亚氨基异吲哚啉是一种重要的有机合成中间体,在合成酞菁素颜料及异吲哚啉类颜料方面需求量大。综述了1?3-二亚氨基异吲哚啉的合成工艺,并对其应用研究进行了简要分析。     

5-氨基-6-氟异吲哚啉-2-羧酸叔丁酯的合成

以5-氨基-6-氟异吲哚啉-1,3-二酮为原料,通过还原、Boc保护,两步反应合成得到5-氨基-6-氟异吲哚啉-2-羧酸叔丁酯。对合成工艺进行了研究,在最佳条件下,两步反应总收率54.7%。产物结构经¹H NMR、¹³C NMR和电喷雾离子源质谱(ESI-MS)表征。     

1，3-双亚氨基异吲哚啉的合成及分析

以硬脂酸和油酸为乳化剂、钼酸铵为催化剂,尿素和邻苯二甲酸酐经亚氨化,然后在硝酸铵存在下发生缩合反应得到1,3-双亚氨基异吲哚啉的硝酸盐,最后用氢氧化钠中和得到1,3-双亚氨基异吲哚啉。对反应路线及反应条件的选择进行了讨论,并采用高效液相色谱法测定了产物的纯度。     

氧代螺环异吲哚啉衍生物的合成及表征

具有手性的氧代螺环异吲哚啉衍生物可作为天然药物的活性结构单元,这些化合物在医药和化工领域具有重要的研究价值。实验以1,4-二氧螺环[4.5]癸烷-8-酮和苯甲酸酐为原料,经过一系列反应制得2-(1-(4-氧代双环[4.1.0]庚基-1-)丙基-2-)异吲哚啉-1,3-二酮,并利用高效液相色谱(HPLC)、液质联用仪(LCMS)、核磁(NMR)对其结构进行表征。     

异吲哚啉红有机颜料的制备

采用二氰二胺、丙二酸二乙酯和邻苯二腈等作为原料，制备了性能优良的异吲哚啉红有机颜料，讨论了影响颜料收率和颜色的诸种因素，确定了最佳工艺条件。     

水镁石、水菱镁石和斜方云石资源、加工与应用

对水镁石、水菱镁石和斜方云石资源及其加工和应用进行了评述。包括上述资源的发展历史、化学组成和物性参数、资源储量和矿石品位、生产加工以及在不同领域(如镁质阻燃剂、中和剂、重金属离子脱除剂、镁肥、饲料添加剂等)的应用,并对它们的发展前景进行了展望。     

Pd-, Ni-, Fe-, and Co-Catalyzed Cross-Couplings Using Functionalized Zn-, Mg-, Fe-, and In-Organometallics

The development of new methods for preparing polyfunctional organometallics has made a broad range of such reagents available for various transition metal-catalyzed cross-couplings. An overview of the most general preparation methods will be presented. Applications to practical cross-coupling procedures will be covered, emphasizing the functional group compatibility and the reaction scope.     

Bioaerosol Science,Technology, and Engineering: Past,Present, and Future

Poor air hygiene as a result of bioaerosol contamination has caused diverse forms of adverse health effects and diseases. In addition, global biosecurity is threatened by purposeful use of biowarfare agents and the vulnerability of people to the infectious agents. Accordingly, developments in high-volume biosampling, including aerosol-to-hydrosol techniques with low cut-off size, real-time bioaerosol detection, adequate biological quantification, and exposure control, as well as the investigation of the link between disease outcome and bioaerosol exposure, are current areas of bioaerosol research. Although milestone progress has been achieved both in bioaerosol sampling and analysis techniques since late 1800s, compared to atmospheric chemistry the bioaerosol field is still understudied. This is partially because of the lack of both bioaerosol scientists and multidisciplinary collaboration. It is becoming necessary to develop a pool of scientists with different expertise, e.g., bioaerosol scientists, environmental engineers, biomedical engineers, epidemiologists, microbiologists, chemists, physicists, as well as researchers in other engineering fields, in mitigating bioaerosol-related adverse health effects, eliminating diseases, and preventing and controlling epidemic outbreaks. This work is conducted to broadly review current state-of-the-art sciences and technologies in the bioaerosol field. In tackling the challenges ahead, the review also provides perspectives for bioaerosol research needs, and further reminds bioaerosol scientists of those existing technologies in other fields that can be leveraged. In view of the past, forward-looking hypotheses and revolutional perspectives are needed to be formed in order to allow the bioaerosol research have major impacts in the academic community in this new millennium.     

Stable silyl, germyl, and stannyl cations, radicals, and anions: heavy versions of carbocations, carbon radicals, and carbanions

The rapidly growing chemistry of the cations, radicals, and anions based on the group 14 elements heavier than carbon (Si, Ge, Sn, and Pb) is one of the most important organometallic fields. Recent developments in this research area moved such species from the class of short-lived reactive intermediates to the class of easily accessible, isolable, and fully characterizable compounds. In this Account, we deal with the major accomplishments in the field of the stable representatives of "heavy" cations, radicals, and anions.     

Breaking, making, and twisting of chemical bonds in gas, liquid, and nanocavities

In this Account, we recount on our studies of 1'-hydroxy-2'-acetonaphthone (HAN, a proton transfer prototype molecule) in gas, solutions, and nanocavities. The internal H-bond photoreaction in HAN leads to a keto type structure, and following its formation, an internal twisting motion gives birth to keto rotamers. Theory, temperature, and solvent effects on its photodynamics show the involvement of efficient radiationless processes in both keto structures. When HAN is caged in a cyclodextrin nanocavity, the spectroscopy, photodynamics, and issues of twisting motion are strongly affected and could be tuned: a behavior relevant to those of many chemical and biological systems.     

Polystyrene nanocomposite materials: Preparation,morphology, and mechanical,electrical, and thermal properties

In this study, we prepared polystyrene (PS) resin nanocomposites with antistatic properties by melt‐blending PS with nanoscale zinc oxide (ZnO). The effects of nanoscale ZnO on the electrical and physical characteristics of the PS nanocomposites were investigated. Two kinds of nanoscale powders, spherical zinc oxide (s‐ZnO) and zinc oxide whisker (w‐ZnO), were selected. The coupling agents vinyltriethoxysilane (VTES) and phenyltriethoxysilane (PTES) were used to improve the compatibility between the nanopowders and PS resin. The addition of s‐ZnO and w‐ZnO improved the antistatic characteristics of the materials. The surface resistivities of the s‐ZnO and w‐ZnO nanocomposites were significantly reduced by modification with VTES and PTES. The addition of ZnO nanopowder increased the flexural modulus and reduced the flexural strength. The silane coupling agents improved the flexural properties of the nanocomposites. The glass‐transition temperatures and thermal degradation temperatures of the ZnO/PS nanocomposites increased with ZnO content. Treatment with silane increased the glass‐transition temperatures and thermal degradation temperatures of the composites. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 98: 2266–2273, 2005