A Study of Their Structure-Property Relationship” (Host: Brock), 

Abstract:

Metal-organic frameworks (MOFs), a class of hybrid materials, exhibit ultrahigh porosity, structural diversity and multiple functionalities, making them excellent candidates for a variety of applications. Recent progress in making surface-supportive MOF (SURMOF) thin films has dramatically expanded their applications ranging from molecular devices and membranes all the way to biomedicine. Attaching MOFs onto substrates offers a wide variety of chemical functionality and controllable structural and mechanical versatility. However, the challenges associated with chemically binding MOF films relating to homogeneity, orientation, thickness, and stability are hard to accommodate all in one system. We utilize surface science and coordination chemistry as guidance during the formation of MOF films. In my presentation, I will discuss several examples of two-dimensional (2D) and three-dimensional (3D) SURMOFs that can be used in photoelectric conversion and drug delivery. More specifically, we compared the optical and electronic properties of two semiconducting 2D porphyrin paddle-wheel frameworks which were prepared via a Langmuir-Blodgett method, and studied their electron transfer behaviors using a mercury drop junction approach. I will also present the study of using surface supportive Fe-based MILs for drug delivery with ibuprofen as a model drug. We compared MIL-53 and MIL-88B for drug loading and releasing, and studied the pH-responsive drug release behaviors of surface supportive MIL-88B thin films.