## 2 MIPs
### Advantages and Applications  
The produced polymers are feasible since they are comparatively cheap, straightforward to make, very robust, offer great selectivity with regard to the imprinted substance (target substance or template) and they can be reused without losing their effectiveness, exhibiting high resistance to extreme conditions (such as temperature, pH, solvents, pressure, etc.) [39; 40]. Furthermore, owing to the substantial number of distinct monomers that are commercially accessible (more than 4000 polymerizable compounds), their properties can be set, rendering them a valuable class of affinity sorbents. The technology of molecular imprinting is widespread and can be used in a variety of applications with growth potential [37; 40], such as those shown in Figure 2.  
* Analytical techniques 1. Chromatography was the initial purpose for which imprinted polymers were employed. Separating the elements of complex mixtures is a vital step in the analysis and preparation of samples. Because they are fairly easy to make and have high selectivity for their template, MIPs are effective separation materials. MIPs have been used in many fields of chromatography, such as liquid chromatography (LC) and thin-layer chromatography (TLC) [41; 42]. 2. Another area of separation science in which MIPs are confirmed to be valuable is electrophoresis, where the analyte mixture is forced through a stationary phase by an electric field (instead of by gravity or pressure, as in chromatography). 3. Solid-phase extraction (SPE): molecular-imprint-based solid-phase extraction (MISPE) is presently the best-developed application in this scientific field with regard to the implementation of MIP-based technologies [43; 44]. * Membranes  
Molecularly imprinted polymer membranes are intended to act as a barrier between two fluid phases. They might be proposed for the cleansing of the compound that passes exclusively from a feed solution to the permeate. Such membranes may be free-standing or supported on porous supports, and their porosity must be restricted so that transport through them is not purely governed by diffusion within the solution in the pores. Membranes with large (flow-through) pores can also be used as selective adsorbents for solid-phase extraction; thin films of imprinted material deposited on solid surfaces are also intended to act as sensing elements [45; 46; 47]. Figure 2: Applications of MIPs in several scientific sectors. * Catalysis Catalysis Catalys are materials that can change the velocity of chemical reactions without being consumed. They typically accomplish that by decreasing the activation energy by developing a compound stabilizing an intermediate. To attain this with an MIP, a cavity has to be created where a crucial medium fits in and becomes stabilized. In addition, the cavities of an MIP can protect functional groups or orient two areas where a reaction should take place toward each other [48; 49; 50]. * Drug delivery Many drugs are successful against cancer but are not recommended for the treatment of human cancers because of dangerous side effects. Other medicines have little solubility in body liquids or are damaged by the immune system; therefore, they have no way to reach the area within the body where they are needed. Medicine delivery concerns materials that, upon incorporating the drug, may be delivered to the area in which they can offer the best treatment and are released in that specific place. MIPs (with additional requirements necessary for this objective) can reversibly incorporate a template molecule offering this capacity, which is highly desirable in drug delivery [19; 51]. * Drug discovery The effectiveness of medicines is largely centered on their ability to attach to certain receptors and initiate or obstruct a reaction. Inhibition agents are important because they may be potential drugs or have other biological significance. It has been demonstrated that MIPs can be employed to find potential inhibitors for receptors.