Scalable, versatile surface engineering through photo-initiated chemical vapour deposition

通过光引发化学气相沉积进行可扩展、多功能的表面工程

• 批准号: RGPIN-2019-05378
• 负责人: Tavares, Jason
• 金额: $ 3.35万
• 依托单位: École Polytechnique de Montréal
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=753759
• 关键词: Scalable; versatile; surface; engineering; through

Surface engineering alters our first interaction with a material - it affects wettability, corrosion, refractive index, thermal conductivity, dispersion (for particles) and adhesion. It is exploited in a wide variety of industries, from aerospace to microelectronics, but scalable techniques for its implementation remains out-of-reach for applications with tighter profit margins, such as agriculture, water capture, 3D printing, etc. The long-term objective of our research aims to democratize surface engineering by developing new and innovative approaches for scalable treatment. Over the past years, our team has spearheaded the development of photo-initiated chemical vapour deposition (PICVD), an atmospheric pressure, solvent-free, gas-phase approach that functionnalizes a wide variety of surfaces (e.g. metal, polymers, wood, nanomaterials), using commercially ubiquitous UVC light sources and affordable syngas (CO, H2). This scalable approach has attracted the attention of multiple industrial partners and led to valuable collaborations, namely because it can form a strong covalent bond without solvent-based chemistry (often complex, multi-step, with toxic reagents), and without the shortcomings of thermally-activated CVD (heat-sensitive substrates) or plasma-enhanced CVD (expensive infrastructure and operating conditions). It also avoids the use of costly, low-wavelength vacuum ultraviolet (VUV) lamps, privileged by the pioneers of PICVD, and their related shortcomings (similar to plasma). To accelerate transfer to Canadian companies, key scientific and engineering challenges must be met, namely with regards to refine the process kinetics, reduce the environmental footprint and increase the range of functional groups possible. We aim to meet these short-term objectives through 3 high-impact PhD projects over the next 5 years: (1) Synthesize photo-sensitive compounds from CO and H2 to promote reaction initiation. Metal carbonyls are the first targets for this project, given that iron pentacarbonyl (Fe(CO)5) has already shown that it affects our reactions (impact: increase treatment speed and repeatability); (2) Photo-reduce CO2 with UVC light (potentially from mercury-free LED lamps) and affordable catalysts to generate CO or photo-sensitive compounds, thereby leveraging the surface engineering process to sequester and utilize carbon (impact: reduce footprint); (3) Graft functional sulfur- and nitrogen-containing compounds onto PICVD-treated surfaces to promote selective attachment of molecules (such as proteins) - this has never been accomplished through atmospheric photo-processing (impact: increase applications). Accomplishing these objectives will lead to major impact in the economy, specifically through effects in the manufacturing sector (where thin films and coatings are a multi-billion-dollar industry) and through training of highly qualified personnel (3 PhDs, 10 undergrads) with high-value skills transferrable to Canadian industry.

表面工程改变了我们与材料的第一次相互作用 - 它会影响润湿性，腐蚀，折射率，导热率，分散性（用于颗粒）和粘附。它在从航空航天到微电子学的各种行业中被利用，但可扩展的技术对于具有更高利润率的应用程序，例如农业，水捕获，3D打印等应用。在过去的几年中，我们的团队率先开发了光发出的化学蒸气沉积（PICVD），一种大气压力，无溶剂，无溶剂，气相方法，它使用企业上的uvc Light syngas（Co co co co co co co co co co co cole syngas and cole synemand office syns and office and office syngas and office nanomatiacs of tossnal of synomerials，例如金属，聚合物，聚合物，聚合物，木材，纳米材料）。 This scalable approach has attracted the attention of multiple industrial partners and led to valuable collaborations, namely because it can form a strong covalent bond without solvent-based chemistry (often complex, multi-step, with toxic reagents), and without the shortcomings of thermally-activated CVD (heat-sensitive substrates) or plasma-enhanced CVD (expensive infrastructure and operating conditions).它还避免使用昂贵的低波长真空紫外线（VUV）灯，由PICVD的先驱及其相关的缺点（类似于等离子体）。为了加速转移到加拿大公司，必须应对关键的科学和工程挑战，即在完善过程动力学，减少环境足迹并增加功能群体范围的方面。我们的目标是在未来5年内通过3个高影响力的PHD项目实现这些短期目标：（1）合成CO和H2的光敏感化合物以促进反应启动。鉴于铁五核酸铁（Fe（CO）5）已经表明它会影响我们的反应（影响：提高治疗速度和重复性），因此金属羰基是该项目的第一个目标。 （2）带有UVC光（可能来自不含汞的LED灯的）和负担得起的催化剂的照片还原二氧化碳，以生成CO或光敏化合物，从而利用表面工程工艺来隔离和利用碳（影响：减少足迹）； （3）含硫和氮的功能性硫和氮化合物在PICVD处理的表面上以促进分子的选择性附着（例如蛋白质） - 这从未通过大气光处理（影响：增加应用）来实现。实现这些目标将对经济产生重大影响，特别是通过制造业的影响（薄膜和涂料是数十亿美元的行业），以及通过对具有高价值技能的高素质人员（3 phds，10个本科生）的培训。