Programmable Assembly of π‐Conjugated Polymers. Issue 46 (4th June 2021)

• Record Type: Journal Article
• Authors: Hicks, Garion E. J.; Li, Sheng; Obhi, Nimrat K.; Jarrett‐Wilkins, Charles N.; Seferos, Dwight S.
• Is Part Of: Advanced materials. Volume 33:Issue 46(2021)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2021-06-04
• Subjects: π‐conjugated polymers -- organic electronics -- polymer semiconductors -- self‐assembly; Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adma.202006287
• Languages: English
• ISSNs: 0935-9648

Abstract

Abstract: π‐Conjugated polymers have numerous applications due to their advantageous optoelectronic and mechanical properties. These properties depend intrinsically on polymer ordering, including crystallinity, orientation, morphology, domain size, and π–π interactions. Programming, or deliberately controlling the composition and ordering of π‐conjugated polymers by well‐defined inputs, is a key facet in the development of organic electronics. Here, π‐conjugated programming is described at each stage of material development, stressing the links between each programming mode. Covalent programming is performed during polymer synthesis such that complex architectures can be constructed, which direct polymer assembly by governing polymer orientation, π–π interactions, and morphological length‐scales. Solution programming is performed in a solvated state as polymers dissolve, aggregate, crystallize, or react in solution. Solid‐state programming occurs in the solid state and is governed by polymer crystallization, domain segregation, or gelation. Recent progress in programming across these stages is examined, highlighting order‐dependent features and assembly techniques that are unique to π‐conjugated polymers. This should serve as a guide for delineating the many ways of directing π‐conjugated polymer assembly to control ordering, structure, and function, enabling the further development of organic electronics. Abstract : π‐Conjugated polymer properties depend intrinsically on polymer order, including crystallinity, orientation, morphology, domain size, and π–π interactions. Order can be programmed through covalent bonding, i.e., molecular design, or through processing techniques in solution or solid‐state. This perspective serves as a guide to directing π‐conjugated polymer assembly, control polymer order, and thereby control its optical, electronic, and mechanical properties.