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The aim of this study is to investigate drying, swelling, elastic properties, and to produce optical band gap energies on the performance of Poly (N‐Isopropyl acrylamide) ‐ Multi walled carbon nanotubes (PNIPAm – MWCNTs) and Poly (N‐Isopropyl acrylamide)‐ Graphene Oxide (PNIPAm‐GO) composites, respectively. The composites were prepared by free radical crosslinking copolymerization. Drying and swelling of PNIPAm‐MWCNTs and PNIPAm‐ GO composites were performed by using steady state fluorescence technique. Firstly, the desorption coefficients of the composites were modeled by using Fick's Law. Cooperative diffusion coefficients were calculated by employing Li‐Tanaka Model. When composite doped with 10 wt% of MWCNTs has a higher desorption coefficient than composite doped with the same amount of GO, 40 wt% of GO content in the PNIPAm has a higher diffusion coefficient than the composite that has 40 wt% of MWCNTs content in the swelling process. Secondly, the composite that has 40 wt% of MWCNTs content has a higher modulus before swelling than the composite that has the same amount of GO contents. Lastly, optical band gap energies were calculated by using Tauc's approach, and Urbach's relation by using the data performed UV Spectroscopy. We found that PNIPAm ‐GO has a much narrower band gap value.

Some of the antifouling booster biocides affects the marine ecosystem negatively. The booster biocides which are resistant to degradation are accumulated in the sediment of the oceans. One of the sedentary organisms in the Mediterranean Sea is Anemonia viridis. The aim of this study is to show the toxicities of common biocides such as irgarol, seanine-211, zinc omadine, and acticide on the fluorescence by GFPs of A.viridis. The decreases in the fluorescence intensities of the GFP were measured within different booster biocide concentrations. The results show that fluorescent intensities of GFP proteins decreased more than 50 percent when they are exposed to different concentrations of irgarol, zinc omadine, acticide. In conclusion, ecosystem health should be prioritized when new antifouling paint compositions are proposed. From the results, it seems that A.viridis can be considered as a vulnerable organism and also it is sensitive to booster biocides within self-polishing antifouling paint formulations.