Development of Coordination Polymer Glass as a Luminescent Solar Concentrator Materials

配位聚合物玻璃作为发光太阳能聚光材料的开发

• 批准号: 19K15662
• 负责人: Nagarkar Sanjog
• 金额: $ 2.75万
• 依托单位: National Institute of Advanced Industrial Science and Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Early-Career Scientists
• 财政年份: 2019
• 资助国家: 日本
• 起止时间: 2019-04-01 至 2020-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-19K15662/
• 关键词: coordination polymer; glass; クリーンエネルギー; 配位高分子; ガラス

Porous glasses are highly sought for separation, energy and catalytic applications. However, for the existing materials fine control of pore structure and hence properties are very difficult. Coordination polymers(CPs) are designer inorganic hybrid framework materials widely studied for gas storage/separation, catalysis, magnetic, ionics applications. While crystalline CPs are prevalent in the literature the amorphous glassy states of CPs have attracted much attention due to defect rich dynamic structure and excellent formability. With careful review in the area of glassy and liquid states of CPs, we identified the key challenges need immediate attention. Controlled transfer of porous properties of crystalline CPs to glassy CPs is one of the important challenges. We have synthesized new porous CP Cu(dpp)TFSI (dpp=1,3-Di(4-pyridy)propane; TFSI=(trifluoromethanesulfonyl)imide). The CP formed a glass on melt quenching but the porosity was lost completely although the glass structure was found to be same as the crystalline one. We then utilized mechanical milling induced glass formation. The CP showed glassy behavior with sorption capacity better than the crystals. Milling time is used as tool to introduce different amounts of defects in CP glass which allowed us to precisely control the porous properties of CP glass. The shaping ability of CP glass(in the form of pellets) is found to be superior than the crystalline CP thanks to dangling and highly dynamic bonds in glasses. Reversible crystal-glass-crystal formation in milled glass is rare and is to be further investigated.

多孔玻璃在分离、能源和催化应用中受到高度追捧。然而，对于现有的材料，孔结构的精细控制和因此的性能是非常困难的。配位聚合物（CPs）是一种无机杂化骨架材料，在气体储存/分离、催化、磁性、离子学等领域有着广泛的应用。结晶态的聚合物在文献中占主导地位，而非晶玻璃态的聚合物由于其缺陷丰富的动态结构和优异的成形性而引起了人们的广泛关注。通过对CP的玻璃态和液态领域的仔细审查，我们确定了需要立即关注的关键挑战。如何将结晶态氯化石蜡的多孔性可控地转移到玻璃态氯化石蜡是一个重要的挑战。我们合成了一种新的多孔CP Cu（dpp）TFSI（dpp= 1，3-二（4-吡啶基）丙烷; TFSI=（三氟甲磺酰）亚胺）。CP在熔融淬火时形成玻璃，但孔隙率完全丧失，尽管发现玻璃结构与结晶结构相同。然后，我们利用机械研磨诱导的玻璃形成。CP表现出玻璃态行为，吸附能力优于晶体。研磨时间被用作在CP玻璃中引入不同量的缺陷的工具，这使得我们能够精确地控制CP玻璃的多孔性质。由于玻璃中的悬挂键和高动态键，CP玻璃（以颗粒形式）的成形能力被发现比结晶CP优越上级。在研磨玻璃中，可逆的晶体-玻璃-晶体形成是罕见的，有待进一步研究。

项目成果

Coordination Star Polymer Glasses: A New Modular Glass Former for Ionics Applications

配位星形聚合物玻璃：一种用于离子应用的新型模块化玻璃成型体

• 发表时间: 2019
• 作者: E. Yamamoto;K. Hayashi;M. Kobayashi;M. Osada;Sanjog S. Nagarkar (Oral Presentation)
• 通讯作者: Sanjog S. Nagarkar (Oral Presentation)