{
    "protocol": "Amphiphilic polymeric thin films were produced by copolymerization of 2,2,2,3,4,4,4,4 hexafluorobutyl acrylate (HFBA) and 2-(dimethylamino)ethyl methacrylate (DMAEMA) monomers using the initiated chemical vapor deposition (iCVD) technique. Different chemical compositions of the copolymer films were achieved by varying the flow rate ratios of the monomers.The monomers HFBA (95%), DMAEMA (98%) and the initiator di‑tert butyl peroxide (TBPO, 98%) were acquired from Sigma–Aldrich and utilized as received without any additional modifications or post-purification procedures.The iCVD process for amphiphilic film coatings was conducted within a stainless-steel chamber. The substrates were kept at a constant temperature by placing them on the reactor floor with a heat exchanger connected to a recirculating chiller. The energy for polymerization was provided by a tungsten filament array placed 22 mm above the reactor floor. The filament's temperature was monitored using a K type thermocouple and manually adjusted by a variac. Precursors DMAEMA, HFBA, and TBPO were placed in stainless-steel jars and their vapors were fed into the reactor using needle valves. The temperatures were kept constant at 55°C for DMAEMA, 25°C for HFBA, and 25°C for TBPO. A vacuum environment was created using a rotary vacuum pump and pressure was monitored with a capacitance-type manometer. A PID-controlled butterfly valve was used to maintain desired pressure. The flow rates of HFBA/DMAEMA were adjusted to fabricate amphiphilic polymers with different chemical compositions, using three different DMAEMA flow rates while keeping TBPO and HFBA flow rates constant at 1.0 sccm. The amphiphilic polymers were designated as AP1, AP2, and AP3 with flow rate ratios of HFBA/DMAEMA being 1/0.3, 1/0.7, and 1/1, respectively.The synthesis of hydrophilic polymers was conducted using the initiated chemical vapor deposition (iCVD) method. The specific experimental conditions for the deposition of amphiphilic thin films with the functional groups HFBA and DMAEMA are outlined as follows: For AP1, the flow rates were set to 1.0 sccm for HFBA, 0.3 sccm for DMAEMA, and 1.0 sccm for TBPO, with a reactor pressure of 600 mTorr, filament temperature at 245 °C, and substrate temperature at 25 °C. For AP2, the flow rates were 1.0 sccm for HFBA, 0.7 sccm for DMAEMA, and 1.0 sccm for TBPO, maintaining the same reactor pressure, filament temperature, and substrate temperature as AP1. For AP3, the flow rates were 1.0 sccm for HFBA, 1.0 sccm for DMAEMA, and 1.0 sccm for TBPO, with identical reactor, filament, and substrate conditions as the previous experiments."
}