## 4 Conclusions  
The photoactive polymeric materials exhibit the capacity to degrade AHMPD in real effluent samples from an IWWTP at 85% at best. The hydrophilic design of the polymers enhances the photooxidative capability, as demonstrated by photosensizers P3 and P4. Therefore, the use of these photosensitizers is suggested for future studies due to their effectiveness in aqueous media. Although an 85% degradation rate is high, there is room for improvement because control experiments have shown that polymers P3 and P4 achieved over 99% ADPA oxidation rates. Moreover, future research should focus on improving the kinetics and evaluating the removal efficiency of other pesticide EPs occasionally detected in the IWWTP analytics (such as Imazalil, Thiabendazole, Pyrimethanil, and Metalaxyl), which are present at concentrations similar to AHMPD in some analyses of specific periods. Although the degradation kinetics of AHMPD are slower compared to the literature, AHMPD was selected for this initial evaluation due to its suitability for UV-Vis monitoring, consistent with the previous studies using the same photosensitizers. These findings should be viewed as a preliminary approach and proof of concept. This study demonstrates that sensitized photo-oxidation is an alternative pathway for the environmental or programmed degradation of pyrimidine-type or N-heteroaromatic compounds, especially in their ionized form by OH, paving the way for the application of these polymeric materials--or an improvement of these photosensitizers--as degrading agents for environmental contaminants.  
The following supporting information can be downloaded at: [[https://www.mdpi.com/article/10.3390/app14146308/s1](https://www.mdpi.com/article/10.3390/app14146308/s1)]([https://www.mdpi.com/article/10.3390/app14146308/s1](https://www.mdpi.com/article/10.3390/app14146308/s1)), Characterization of P1-P4 polymers by spectroscopy FT-IR and FT-Raman: spectroscopy P1, spectroscopy P2, spectroscopy P3 and spectroscopy P4; legend for FT-IR (Fourier Transform Infrared Spectroscopy): percentage transmittance (%T) as a function of frequency (cm\({}^{-1}\)), legend for FT-Raman (Fourier Transform Raman Spectroscopy): Raman intensity in arbitrary units as a function of frequency (cm\({}^{-1}\)); Characterization of P1-P4 polymers by thermogravimetric analysis (TGA): ATG P1-P4; legend: black curve is percentage weight loss as a function of temperature, blue curve (TGA curve) is percentage weight loss as a function of time, red curve (DTG curve) is the first derivative of the TGA curve.  
This research was funded by the Spanish Ministry of Science and Innovation through the State Investigation Agency with the Torres Quevedo industrial postdoctoral program PTQ2020-011517.  
Data Availability Statement: Data is contained within the article and Supplementary Materials.  
The author wishes to express their gratitude to their PhD thesis supervisors at Universitat Jaume I for their mentorship. It was during this period when the design of the polymeric materials was first conducted; the synthesis and characterization process has been replicated in this work for the specific use of photo-oxidation of contaminants in IWWTP.  
The author declares no conflict of interest.