Deposition of fluorescent NIPAM-based nanoparticles on solid surfaces: Quantitative analysis and the factors affecting it

摘要: Recently, responsive surfaces have attracted attention due to their potential applications. Reported research studied the deposition of environmentally particles on different surfaces, qualitatively tested response environmental conditions and possible In this work, novel fluorescent temperature-sensitive nanoparticles were synthesized using a surfactant free emulsion polymerization technique: poly(N-isopropylacrylamide-co-5% vinyl cinnamate) (p(NIPAM)5%VC). The new characterized dynamic light scattering fluorescence spectroscopy. A sensitive method for quantitative analysis p(NIPAM) 5% VC spectroscopy was developed determine concentration nanoparticle dispersions. This further used quantitatively mass deposited per unit area glass pre-treated with acid, base, quartz, stainless steel, gold teflon at 25 °C 60 °C. Factors affecting adsorption/desorption studied, including effect substrate surface charge, roughness (using atomic force microscopy, AFM), hydrophilicity/hydrophobicity temperature which experiments carried out. results show that charge is most significant, followed by temperature. Meanwhile, influence hydrophobicity/hydrophilicity appears be far less significant than previously mentioned factors.