Thermomechanical Stability of Organic Semiconductors
Abstract
Organic semiconductors, derived from pi-conjugated molecules and polymers, offer promise for the development of lightweight, large-a,rea, shock-resistant, flexible, and stretchable electronic, computing, power generation and storage, and sensor technologies that wi,ll advance Navy and Marine Corps operations. While the electronic, redox, and optical properties of the molecular and polymer buildi,ng blocks can be readily tuned through organic synthetic chemistry approaches, the properties of organic semiconductors, including t,heir electrical, optical, and thermomechanical response, are emergent, and are dependent on how these constituents pack in the solid, state. The overarching goal of this work, through the development and deployment of computational materials chemistry approaches, i,s to develop a multiscale understanding of how the chemistries and architectures of the building blocks and their associated noncova,lent intermolecular interactions and dynamics in the solid state determine the thermomechanical response of organic semiconductors.,This project will focus on answering the following questions for monocomponent and multicomponent organic semiconductors: How do spe,cific chemical modifications to the chemistries and architectures of the pi-conjugated backbones and pendant side chains impact the,natures and strengths of the noncovalent intermolecular interactions that modulate solid-state molecular and polymer packing? What a,re the dynamics of the molecular and polymer building blocks, starting with the backbone and side-chain components, as a function of, thermal and mechanical stress? How do the molecular and polymer dynamics under thermal and mechanical stress differ as a function o,f solid-state order? Are molecular and polymer dynamics under thermal and mechanical stress different at the interface of amorphous,and crystalline regions, and how do these motions impact the stability of these interfaces? For multicomponent materials, how do the, inter-materials interactions impact the thermal and mechanical response? It is anticipated that the knowledge gained by addressing,these questions will result in the development of new molecular and polymer design guidelines for organic semiconductors with robust, thermomechanical stability.Approved for Public Release
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Mar 05, 2022
- Source ID
- N000142212179
Entities
People
- Chad Risko
Organizations
- Office of Naval Research
- United States Navy
- University of Kentucky