A conjugated polymer is a type of polymer characterized by the presence of alternating single and double bonds between carbon atoms in its backbone chain. This unique structure allows for the delocalization of electrons across the polymer, granting it the ability to conduct electricity, which is a remarkable property for a polymer. Due to this conductivity, conjugated polymers are extensively used in electronic applications, such as in organic light-emitting diodes (OLEDs), solar cells, and transistors. Their flexibility, combined with electrical conductivity, opens up innovative applications in flexible electronics and advanced materials. Moreover, by modifying the molecular structure of such polymans, their electrical, optical, and mechanical properties can be finely tuned, broadening their range of applications even further.

The degree of polymerization (DP) in polypropylene indicates the average number of monomer units (propylene) in a polypropylene molecule. To compute it, you need the molar mass of the polymer and the molar mass of the repeating monomer unit. Propylene (C3H6) has a molar mass of about 42 g/mol. Assuming we know the molar mass of a given sample of polypropylene, you can calculate DP using the formula: DP = Molar Mass of Polymer / Molar Mass of Monomer. For example, if the polypropylene sample has a molar mass of 42,000 g/mol, the Degree of Polymerization = 42,000 g/mol / 42 g/mol = 1000. This means there are, on average, 1000 propylene units in the polymer chain, indicating the polymer's size and its associated physical properties. Understanding DP is crucial for predicting the material's behavior in different applications.

Fish emulsion is a nutrient-rich, organic fertilizer commonly used in gardening and farming. It provides a quick nitrogen boost to plants, enhancing their growth and health. The frequency of application depends on the plant's growth phase and nutritional needs. Generally, fish emulsion can be applied every 2-4 weeks during the growing season. For rapidly growing vegetables and flowers, a bi-weekly application is beneficial. However, for established trees and shrubs, a monthly application is sufficient. It's important to follow the recommended dilution ratios on the product label to avoid over-fertilization, which can harm plants. Additionally, applying fish emulsion during cool parts of the day, such as early morning or late afternoon, can prevent leaf burn and ensure better absorption.