Investigation of 3‐aminopropyltrimethoxysilane for direct deposition of thin films containing primary amine groups by open‐air plasma jets

Abstract

Open-air plasma jets are becoming increasingly popular due to easy and affordable large-scale coating deposition on diverse substrates. However, direct deposition of primary amine groups (NH 2 ), which are attractive as covalent anchor points for molecule grafting, remains challenging. In this study, 3-aminopropyltrimethoxysilane (APTMS) has been directly polymerized on glass by a plasma jet. Quantification of NH 2 showed that APTMS polymerization and NH 2 degradation were correlated with Yasuda's parameter and that a compromise between NH 2 retention and coating stability is required. Evaporation of APTMS was found to improve surface smoothness and homogeneity but was found to decrease the deposited NH 2 concentration, from 3.7 ± 1.3 NH 2 /nm 2 to three times lower. Results showed that deposited NH 2 could be used as anchor points for polyethylene glycol chain immobilization.

Carbon Dots Release from Biodegradable Coatings Deposited by Aerosol-Assisted Open-Air Plasma

“…To ensure the stability of coatings during all the characterizations, the surface of silicon wafers was functionalized by vinyltrimethoxysilane (VTMS). Samples were activated for 15 min in Piranha solution, then rinsed three times 10 min in water and 2 min in acetone, in an ultrasonic bath, before being air-dried [11]. Then, they were immersed for 3 h in a VTMS solution (2%vol) in anhydrous toluene under stirring and inert atmosphere.…”

“…Briefly, a dual nebulization system was used to generate an aerosol of precursor and an aerosol of aqueous CDs in an argon stream. The selected precursors were MA and EGDMA, both diluted in 50 vol% of ethanol (EtOH) to improve the efficacy of CDs entrapment in the coatings [11,12]. A 10-mg/mL solution of CDs in water was used.…”

Study on Precursor Distribution of a No-inner-wall Deposition Atmospheric Pressure Plasma Jet Used for Thin Film Deposition

“…Since the entire process takes place in an open space, it becomes challenging to control the lms or nanoparticles consistency. Another method involves creating small holes at the jet's outlet to introduce the precursor into the plasma plume [15]. This approach helps reduce deposition on the inner walls, but it cannot completely eliminate it.…”

Special issue: Plasmas for Biointerfaces

“…Kruse et al [ 5 ] describe an in vivo ovine osteointegration study on 3D‐printed polyether‐ether‐ketone (PEEK) bone implants surface‐modified by means of a plasma immersion ion implantation process. The issue of coatings deposited by aerosol‐assisted AP plasma processes for controlled release of molecules is addressed by Morand et al, [ 6 ] while that of antibacterial plasma polymers based on natural molecules is discussed by Romo Rico et al [ 7 ] Two papers on plasma processing of scaffolds, by Solovieva et al [ 8 ] for enhancing wound healing in diabetic mice, and by Redzikultsava et al [ 9 ] on processes and scaffold design principles, round off this special issue.…”