CAREER: Surface Chemistry of Crystalline Coordination Networks

在材料研究部固态和材料化学项目的支持下，这一职业项目的非技术性总结，首席研究员田方元教授和她的研究小组研究二维导电和半导体多孔晶体薄膜。导电材料在储能、化学传感、电催化和燃料电池等领域有着广泛的应用。探索在这些超薄多孔材料上观察到的电子转移行为是至关重要的，这个项目提供了对二维导电和半导体材料表面和界面化学的深入了解，这与美国国家科学基金会推动基础科学进步的使命很好地一致。该研究对推动半导体产业的发展具有一定的参考价值。此外，该项目将研究和教育相结合，培养表面科学本科生，并教育高中生材料化学。另一项教育努力是通过向来自不同文化背景的学生提供研究机会来促进材料科学的多样性。CARAPE项目由材料研究部固态和材料化学项目支持，研究二维导电和半导体晶体配位网络中的电子转移过程，包括金属-有机骨架(MOF)、共价有机骨架(COF)及其与导电聚合物的复合材料。具体地说，研究活动包括研究非均相结构中导电聚合物和其宿主MOF/COF材料之间的横向和垂直电荷传输以及电子转移。该项目结合分析方法和材料设计，提高了对晶体配位网络和半导体之间表面和界面相互作用的科学理解，从而指导未来基于晶体配位的器件设计。通过为加州州立大学长滩分校的不同本科生提供早期研究机会，该项目的目标是增加材料科学的多样性。同时，通过提高科学意识和对材料研究的兴趣，外展活动吸引了当地高中生和普通公众。这一奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。

NON-TECHNICAL SUMMARY With this CAREER project, supported by the Solid State and Materials Chemistry program in the Division of Materials Research, the principal investigator, Prof. Fangyuan Tian, and her research group study two-dimensional conductive and semiconductive porous crystalline thin films. Electrically conductive materials have led a range of applications in energy storage, chemical sensing, electrocatalysis, and fuel cells. It is critically important to explore the electron transfer behaviors observed on these ultrathin porous materials and this project provides an in-depth understanding of surface and interface chemistry of two-dimensional conductive and semiconductive materials, which aligns well with the mission of NSF to promote the progress of fundamental science. The research is beneficial to advancing the semiconductor industry. Moreover, this project integrates research and education to train undergraduate students in surface sciences and educates high school students about materials chemistry. Another educational effort is to promote diversity in materials science by providing research opportunities to students from diverse cultural backgrounds. TECHNICAL SUMMARY The CAREER project, supported by the Solid State and Materials Chemistry program in the Division of Materials Research, investigates the electron transfer processes in two-dimensional conductive and semiconductive crystalline coordination networks, including metal-organic frameworks (MOFs), covalent organic frameworks (COFs), and their composites with conductive polymers. Specifically, research activities include the study of lateral and vertical charge transport, as well as electron transfer between conductive polymer and its host MOF/COF material in a heterogeneous structure. The project enhances the scientific understanding of surface and interface interactions between crystalline coordination networks and semiconductors with combined analytical methodology and materials design, thereby guiding future crystalline coordination-based device design. By providing early research opportunities to a diverse cohort of undergraduate students at the California State University Long Beach, the project targets on increasing diversity in materials science. Meanwhile, outreach activities involve local high school students and the general public by improving scientific awareness and interest in materials research.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.