二分子

Three series of donor-acceptorπ-conjugated molecules 1, 2, and 3 have been designed and synthesized with a N, N-dimethylamino, Julolidine group (2,3,6,7-tetrahydro-1H, 5H-pyrido[3, 2, 1-ij]quinolinyl), or N, N-diphenylamino group as the donor moiety, a phenylvinyl or thienylvinyl unit as the bridge, and a bromide or aldehyde group as the acceptor moiety.

本文设计并合成了1、2、3三个系列的D-π-A型化合物(Donor-Acceptorπ-conjugated compounds)，在化合物分子中引入久洛尼啶基团(2，3，6，7-tetrahydro-1H，5H-pyrido-[3，2，1-ij]quinolinyl)，N，N-二甲基氨基，或N，N-二苯基氨基为供电子基团，以苯乙烯基或噻吩乙烯基为桥链，以溴原子或醛基为吸电子基团。

The results showed that the utilization ratio of polymer reached 100% and the conversion of leucoquinizarin was more than 99% determined by TLC.

合成反应中高分子利用率为100%，通过薄层色谱分析发现1，4—二羟基蒽醌隐色体的转化率基本达到100%。

This work solves the assignments of uncertain C3 and C1′ NMR signals in the previous literature and will be helpful to study the structures of this kind of new isoflavone compounds by 2D NMR spectroscopy and bioactive compounds in puerarin lobate directly by diffusion2chemical shift 2D NMR.

这些工作有助于利用二维核磁共振技术研究和确定含季碳较多的异黄酮类新化合物的结构和利用扩散相关的核磁共振新技术研究葛根的生理活性成份与靶分子相互作用。

A series of maleopimaric acid polyester amino resins were made from maleo￣pimaric acid polyesters crosslinked by etherified melamine formaldehyde resins.

以马来海松酸和线性小分子二醇为原料，合成马来海松酸聚酯多元醇，再用氨基树脂交联，制备马来海松酸聚酯氨基树脂。

Results are summarized as follows:(1) The absorption property of CdSe nanoparticle colloid under magnetic field was investigated by magnetic circular dichroism measurement, which proved the discrete energy states in CdSe nanoparticles due to size confinement effects.(2) Aggregation of small nanoparticles was usually observed under HRTEM measurements. In order to obtain HRTEM images of well dispersed particles, surfactant molecules were assembled on the surfaces of mercapto acetate stabilized CdSe nanoparticles.

主要内容如下：（1）用磁圆二色吸收谱测试研究了CdSe纳米颗粒的水溶胶在磁场中的吸收性质，验证了CdSe纳米颗粒中由于量子限制效应而存在的分立的能态；（2）用高分辨透射电镜观察到纳米颗粒的团聚，在颗粒表面接枝上含长链烷烃的表面活性剂分子，使颗粒有效的分散，解决了纳米颗粒团聚的问题。

For example,the addition reaction with small molecular,the metathetical reaction with alkynes and Wittig reaction to prepare high-valent transtion-metal allenylidene complexes.

对于化合物11，详细研究了其与小分子加成反应、炔烃复分解反应以及通过Wittig反应制备高价态过渡金属丙二烯基卡宾化合物。

This paper makes detailed discussion on production process of millable polyurethane elastomers, points out that plasticity has close contact with production process of MPU and product quality.

详细论述了混炼型聚氨酯弹性体的加工过程和特性，通过实验指出了生胶可塑度与MPU的加工过程和质量有密切的关系，影响可塑度的因素有生胶中硬链段的含量、聚酯二醇的结构和生胶的分子

Monofilm of silane on the surface of the glass substrates is prepared via the method of self-assembled monolayers, Hf (SO4)24H2O and HCI are used as raw materials, HfO2 thin films are prepared on the active groups of the alkyl silane by the liquid phase deposition.

利用自组装单层膜技术，在玻璃基板上生长有机硅烷单分子膜层，以Hf(SO4)24H2O和HCI配制HfO2前驱液，通过液相沉积在硅烷的功能性官能团上诱导生成二氧化铪薄膜。

However the molecular mechanisms for converting monomeric/functional forms of proteins into cross-linked dimer/oligomer forms are not well understood.

然而，由蛋白质的单体或功能形式转变为交联的二聚体或多聚体的分子机理还不太清楚。

The conformations of α-monosubstituted cyclododecanones have been studied by means of molecular dynamics computations, single crystal X- ray analysis and ~1H NMR.

利用分子力学计算，单晶X射线分析和~1H NMR技术研究了α-单取代环十二酮的构象。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新