On the basis of it , - a isotherms were analyzed at different ph 、 temperature 、 molar fraction of mpda and the optimal condition were obtained the preparation of polydiacetylene monolayers and the studies of its spectroscopic properties : the mpda / pda monolayers were irritated by 254nm uv - lamp for 20 seconds and the sensitive monolayers were produced . the uv - vis spectra showed that the recognition between mannose and e . colik12 is specific . the results of the rrs confirmed that the bands of double < wp = 7 > and triple bonds simultaneously shifted toward high wavenumber and its electrical structure of the backbone changed from acetylene to butatriene - a曲线的结果表明:双炔( pda )及其甘露糖衍生物( mpda )是混溶的。在此基础之上,我们又对亚相处于不同温度、不同ph值时和双炔( pda )及其甘露糖衍生物( mpda )二者以不同比例混合时的- a曲线进行了详细的分析,从而确定了双炔( pda )及其甘露糖衍生物( mpda )成膜的最佳条件。
Professor yam , who is a member of the chinese academy of sciences , has devoted her research efforts to the molecular design and synthesis of novel luminescent inorganic and organometallic metal complexes that can serve as molecular functional materials . some of these new molecular materials have promising optical and light - emitting properties , which may find interesting applications in materials , science , and as chemosensors or biosensors by utilizing luminescene as the reporting property for different substances 身为中国科学院院士的任教授致力于将无机及有机金属化学的研究应用于功能分子材料的发展,利用分子设计及合成手段,系统地创造各种新颖的发光金属炔配合物和金属硫属簇的分子材料,并进行系统性光谱相比研究来阐明其发光性能及光谱源由。
The behavior of 1 , 6 - enyne in the presence of transition metal catalysts had been extensively studied . 1 , 6 - enyne cycloisomerization reactions catalyzed by transition metals and three different reaction pathways , namely cyclometalation , halorhodation and - allyl rhodium route , divided according to the reaction mechanism are summarized and discussed 摘要1 , 6 -烯炔底物在过渡金属催化剂作用下的化学行为得到了广泛的研究,重点是关于过渡金属催化的1 , 6 -烯炔环异构化反应,从反应机理角度入手,把1 , 6 -烯炔环异构化反应按启动方式总结为三类,关对这三种方式启动的1 , 6 -烯炔构化应进行了详细地总结和阐述。
For example , it usually takes a longer time for the products with high technologies accepted by the market than the traditional products , because they seem new or more complex . based on the analysis of the characteristics of high - tech enterprises , this thesis gives an introduction to the function of the external communications and indicates the difficulties that the high - tech corporations face in terms of external communications currently 通过正反案例分析得山:对高新技术企业而言,行业技术专家、领导型顾客等在产品和技术的选择上具有较强的凝聚力、号吕力和影响力,作为该领域的意见领袖,他们的态度对于高新技术产品的采用和推厂具有炔定性意义,因此外部传播中需要将他们作为重点目标公众。
Thus the blue film of polydiacetylene and its mannose derivative were got and uv - vis 、 rrs 、 ftir 、 and cv were used to study the changes of these films when these films were incubated with e . colik12 . the details of the article are as follows : the preparation of diacetylene and its mannose derivative monolayers : we successfully prepared the monolayers of diacetylene and its mannose derivative on the water surface by the ksv - 5000 trough 本论文采用超分子组装技术对双炔及其甘露糖的衍生物进行了有序组装,然后用紫外灯使其聚合,得到聚双炔及其甘露糖的衍生物的单分子薄膜,并运用uv - vis 、 rrs 、 ftir 、 cv等实验手段对该薄膜与大肠杆菌培养前后进行了详细的研究。
Unsaturated alkynyl alcohols , such as dehydronerolidol , dehydrogeranyllinalool , and dehydroisophytol , were prepared by ethynylation of turpentine derivatives , namely terpenylacetones , e . g . geranylacetone , farnesylacetone , and phyton under normal pressure in presence of alkali metal hydroxide and organic solvents 摘要松节油衍生物格萜烯基丙酮,如香叶基丙酮、金合欢基丙酮和植物酮在常压条件,碱金属氢氧化物和有机溶剂存在下可发生乙炔化反应,形成对应的, -不饱和炔醇化合物脱氢橙花叔醇、脱氢香叶基芳樟醇和脱氢异植物醇。