Raman Spectroscopy for Chemistry and Engineering

化学与工程拉曼光谱

• 批准号: RTI-2023-00093
• 负责人: Impellizzeri, Stefania
• 金额: $ 4.98万
• 依托单位: Ryerson University
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments
• 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=748536
• 关键词: Raman; Spectroscopy; Chemistry; Engineering

Raman Spectroscopy is a non-destructive chemical analysis technique based upon the interaction of light with chemical bonds. It probes the chemical structure of a material and provides crucial information about the identity and morphology of a sample, variations of its physical or chemical properties, and the presence of contamination and impurities. Typically, a Raman spectrum is a distinct chemical fingerprint for a particular molecule or material, and can be used to quickly identify and characterize them. Raman spectral libraries are often used for identification of a material based on its Raman signature, i.e. libraries containing thousands of spectra are rapidly searched to find a match with the analyte's spectrum. Raman spectra can be acquired from nearly all samples which contain molecular bonding. This means that solids, powders, slurries, liquids, gels and gases can be all analyzed using Raman spectroscopy. Indeed, Raman spectroscopy is used to analyze countless different samples, such as: Inorganic, organic and biological materials; Pure chemicals, mixtures and solutions; Metallic oxides, semiconductors, and even corrosion, and is a staple technique in any laboratory that focuses on materials science and engineering, organic and biological chemistry, and analytical and environmental science. The requested equipment is a dual-beam (532/1064 nm) Raman spectrometer. The short wavelength laser at 532 nm is crucial to obtaining spectra for inorganic and organic nanomaterials (e.g., graphene and carbon dots), while the long wavelength laser at 1064 nm is essential for analyzing polymers and microplastics (which would otherwise exhibit strong background fluorescence when excited at 532 nm). The equipment is vital to all the Applicants' research applications including, but not limited to: the structural characterization of carbon-based (graphene, graphene oxide, nanodots, nanofibers), boron nitride (nanosheets, quantum dots) and polymeric nanomaterials; metal-organic frameworks composites; metal-doped electrodes; membranes; paints, pigments and coatings; plastic contaminants in water samples; organosilicon-based probes. In addition, Raman spectroscopy will be beneficial to other research labs at our Institution, including those focusing on other areas of chemistry (structure, purity, and reaction monitoring), building science and civil engineering (composite materials, polymers, concrete), ecology and geology (mineral identification and distribution), life sciences (single cells and tissue, drug interactions, disease diagnosis), fabrics and wearables. Our HQP will have independent, direct access to the equipment, and will be trained hands-on in using a fundamental tool in materials, health and environmental sciences research. Moreover, our intentionally inclusive and effective, evidence-based mentoring practices will support individuals over time toward achieving personal and professional growth, development, and success.

拉曼光谱是一种基于光与化学键相互作用的非破坏性化学分析技术。它探测材料的化学结构，并提供有关样品的身份和形态，其物理或化学性质的变化以及污染和杂质的存在的关键信息。通常，拉曼光谱是特定分子或材料的独特化学指纹，可用于快速识别和表征它们。拉曼光谱库通常用于基于材料的拉曼特征识别材料，即快速搜索包含数千个光谱的库以找到与分析物光谱的匹配。拉曼光谱可以从几乎所有含有分子键的样品中获得。这意味着固体、粉末、浆料、液体、凝胶和气体都可以使用拉曼光谱进行分析。事实上，拉曼光谱可用于分析无数不同的样品，例如：无机，有机和生物材料;纯化学品，混合物和溶液;金属氧化物，半导体，甚至腐蚀，并且是任何专注于材料科学和工程，有机和生物化学以及分析和环境科学的实验室的主要技术。所要求的设备是双光束（532/1064 nm）拉曼光谱仪。532 nm的短波长激光对于获得无机和有机纳米材料（例如，石墨烯和碳量子点），而1064 nm的长波长激光对于分析聚合物和微塑料是必不可少的（否则当在532 nm处激发时会显示出强烈的背景荧光）。该设备对于申请人的所有研究应用都是至关重要的，包括但不限于：碳基（石墨烯、氧化石墨烯、纳米点、纳米纤维）、氮化硼（纳米片、量子点）和聚合物纳米材料的结构表征;金属-有机框架复合材料;金属掺杂电极;膜;油漆、颜料和涂料;水样中的塑料污染物;有机硅基探针。此外，拉曼光谱将有利于我们机构的其他研究实验室，包括那些专注于化学（结构，纯度和反应监测），建筑科学和土木工程（复合材料，聚合物，混凝土），生态学和地质学（矿物识别和分布），生命科学（单细胞和组织，药物相互作用，疾病诊断），织物和可穿戴设备的其他领域。我们的HQP将能够独立、直接使用设备，并将接受材料、健康和环境科学研究中使用基本工具的实践培训。此外，我们有意包容和有效的，以证据为基础的指导实践将支持个人随着时间的推移实现个人和职业成长，发展和成功。