Supramolecular System as Microreactor to Control Selectivity in Organic photo-chemical Reactions

利用超分子体系作为微反应器调控有机光化学反应选择性

属类：化学及生命科学-化学-

The rest of the reagents used were at least of reagent grade.

其它所用试剂必须是试剂级以上。

属类：化学及生命科学-化学-

the extent of inhibition decreased with increasing the initial pH as long as the pH was less than 5.

随着初始pH值不断升高,只要不超过5,抑制程度将不断减轻

属类：化学及生命科学-化学-

An aniline stock solution was prepared in pure water at room temperature.

在室温下用纯水制备苯胺贮备液

属类：化学及生命科学-化学-

A pH of. 7 is neutral, while a pH lower than 7 is acid, and. a pH higher than 7 is alkaline (basic).

pH值为7时呈中性,小于7则呈酸性,大于7呈碱性

属类：化学及生命科学-化学-

The titration curve for an acid-base titration is a plot of the solution pH, normally on the vertical axis, against the volume of titrant added

酸碱滴定的滴定曲线是一张溶液的pH值(一般作为纵坐标)和滴定液用量之间的关系图。

属类：化学及生命科学-化学-

A basic salt is formed when there is not enough base to neutralize an acid completely, it consists of a neutral salt with proportion of the base, e.g. basic lead carbonate

当碱量不足以中和酸时所形成的盐为碱性盐;此盐是由中性盐和一定比例的碱组成,例如:碱性碳酸铅

属类：化学及生命科学-化学-

A chemical change is a change in which new substances are formed with different properties, e.g. chalk, when heated, is chemically changed to lime and carbon dioxide.

化学变化则伴随着具有不同性质的新物质产生,例如:白垩加热后,由于化学变化而形成石灰和二氧化碳

属类：化学及生命科学-化学-

The action of increasing the concentration of a solution by evaporating the solvent with heat; the result is a more concentrated solution. And the action of adding water into a solution, the result is a dilute solution

借加热而挥发溶剂以增加溶液的浓度,结果得到浓缩溶液。如在溶液中加入水,则得到稀释溶液

属类：化学及生命科学-化学-

After destructive distillation, coal leaves a solid residue, coke, while, coal-tar and pitch are collected as a distillate, and coal-gas is collected in gasometer

煤干馏后剩下的固体残渣焦炭,而煤焦油和沥青则作为馏出物收集起来,煤气则收集于储气器中

属类：化学及生命科学-化学-