Organic Infrared Materials: Rational Design, Synthetic Strategies, Unique Properties and Emerging Applications

有机红外材料：合理设计、合成策略、独特性能和新兴应用

• 批准号: RGPIN-2017-06412
• 负责人: Wang, ZhiYuan
• 金额: $ 2.04万
• 依托单位: Carleton University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=711384
• 关键词: Organic; Infrared; Materials; Rational; Design

Organic Infrared Materials are an emerging class of Photonic Materials that are able to harvest, emit or convert light in the infrared (IR) spectral region, typically covering the near-infrared (NIR, 780-3000 nm), mid-infrared (MIR, 3-50 microns) and far-infrared (FIR, 50-1000 microns) parts. Invisible IR light represents more than half of the total energy from the Sun to arrive on Earth and affects our everyday life. However, lack of organic IR materials hampers realization of many potentially transformative applications, such as optical attenuators for telecommunications (1300-1600 nm), sensitive signaling for security display or bio-imaging (800-1100 nm), heat absorbers (1000-1600 nm) for energy saving, and broadband photodetectors (300-1600 nm). The long-term objectives of our research are to address the two scientific issues: (1) How to realize and utilize infrared wavelength-selective or panchromic (UV-Vis-IR) absorption, emission and chromogenic property? (2) How to improve the figure-of-the-merit of organic infrared optoelectronics? Accordingly, the following projects with specific objectives are proposed. (i) Development of organic materials with infrared wavelength-selective and panchromatic (UV-Vis-IR) optoelectronic properties. The objectives are to develop new electron acceptors, n-type polymer semiconductors, donor-acceptor polymers with the bandgap energy less than 1.24 eV (>1000 nm) and well-defined metallodithiolene oligomers/polymers with very low-energy mixed-valence states (e.g., 0.05-0.8 eV). (ii) Study of unique IR chromogenic properties. The objective is to correlate the optical and luminescent properties of organic IR materials, under external photo, electrochemical, thermal and chemical stimuli, with their molecular and macromolecular structures. (iii) Emerging applications. The objectives are to utilize the unique properties of organic IR materials for emerging applications. The polymers with strong absorption at specific IR wavelengths (e.g., 1000~1600 nm or 8-12 microns) will be explored as colorless IR-radiation absorbers. The new n-/p-type semiconducting polymers and novel photo-induced charge-transporting interlayer materials will be used to develop polymer panchromatic photodetectors with the device performance comparable to or better than both Si and InGaAs photodetectors. The proposed research includes a diverse and intensive training program for high quality personnel. The training program is designed and executed according to our “tailored-fit personal training” philosophy and offers students the tailored projects that best fit each person's interest, background and potential. The students are also encouraged to get involved in promotion of modern science and engineering in local community and high schools.

有机红外材料是一类新兴的光子材料，能够采集、发射或转换红外（IR）光谱区域的光，通常覆盖近红外（NIR，780-3000 nm）、中红外（MIR，3-50微米）和远红外（FIR，50-1000微米）部分。不可见的红外线占太阳到达地球的总能量的一半以上，影响着我们的日常生活。然而，有机IR材料的缺乏阻碍了许多潜在变革性应用的实现，例如用于电信的光衰减器（1300-1600 nm）、用于安全显示或生物成像的敏感信号（800-1100 nm）、用于节能的热吸收剂（1000-1600 nm）以及宽带光电探测器（300-1600 nm）。 我们的长期研究目标是解决两个科学问题：（1）如何实现和利用红外波长选择性或全色（UV-Vis-IR）吸收，发射和显色性能？(2)如何提高有机红外光电子学的优值？因此，提出了以下具有具体目标的项目。 (i)开发具有红外波长选择性和全色（UV-Vis-IR）光电性能的有机材料。目标是开发新的电子受体、n型聚合物半导体、带隙能量小于1.24 eV（>1000 nm）的供体-受体聚合物和具有非常低能量混合价态（例如，0.05- 0.8eV）。 (ii)独特的红外显色性能研究。目的是将有机红外材料在外部光、电化学、热和化学刺激下的光学和发光性质与其分子和大分子结构相关联。 (iii)新兴应用。其目的是利用有机红外材料的独特性能，为新兴的应用。在特定IR波长处具有强吸收的聚合物（例如，1000~1600 nm或8-12 μ m）将被探索为无色红外辐射吸收剂。新的n-/p-型半导体聚合物和新型光诱导电荷传输层间材料将用于开发聚合物全色光电探测器，其器件性能与Si和InGaAs光电探测器相当或更好。 拟议的研究包括一个多样化的高素质人才密集培训计划。培训计划根据我们的“量身定制的个人培训”理念设计和执行，并为学生提供最适合每个人的兴趣，背景和潜力的定制项目。还鼓励学生参与促进当地社区和高中的现代科学和工程。