Helical perylene diimide self-assembly with a redox-active molecular switch applied to humidity sensing

Abstract

A helical humidity resistive sensor was fabricated by using solution processed supramolecular self-assembly of viologen substituted perylene diimide (PDI-DV). The nanohelices obtained in iPr2O / MeCN under −20 ℃, as...

Self‐assembly of chiral diketopyrrolopyrrole chromophores giving supramolecular chains in monolayers and twisted microtapes

“…Self‐assembly of the helical fibers is likely driven by the interplay between intermolecular hydrogen bonding and π–π stacking, 133 with hydrogen‐bonding driving assembly of these structures and chirality dictating the twisting direction 134 . Literature precedent shows that often similar systems tend to form hydrogen‐bonded oligomers, which assemble into disordered stacks that ultimately lead to the formation of a chiral helix 133,135–140 . From the evidence displayed, it seems that in THF the system, it self‐assembles to form lamellar structures.…”

Competitive Charge Separation Pathways in a Flexible Molecular Folda-Dimer

“…Molecular chromophore systems are promising candidates for light-activated applications, such as optoelectronics, photocatalysis, sensing, and imaging. − These materials exhibit excellent light-harvesting characteristics and synthetic tunability, but they also demonstrate very complicated potential energy surfaces with multiple competitive photoactive pathways. Electronic and vibrational coupling between adjacent chromophores mediates light-driven processes, such as photoinduced charge separation, light-harvesting, excitation energy transfer, and singlet fission.…”

Site-specific ammonia adsorption and transduction on a naphthalimide derivative molecule – a complementary analysis involving ab initio calculation and experimental verification

“…In this context, first principle investigations have emerged as an essential technique for exploring gasmolecule detections using small molecules, which complements experimental findings by analysing the underlying physics of gas-molecule detection. 19,[28][29][30][31][32][33][34][35] Furthermore, with gradual developments in computational techniques, first principle investigation can even be considered an independent technique for analysing and designing different small molecule-based gas sensors that can effectively guide experimental explorations. [36][37][38] Naphthalene diimide derivatives (NDIs) have received enormous attention in recent times due to their potential for versatile applications in organic field-effect transistors (OTFTs), [39][40][41] organic solar cells, [42][43][44] and the fabrication of sensor devices.…”

“…In this context, first principle investigations have emerged as an essential technique for exploring gas-molecule detections using small molecules, which complements experimental findings by analysing the underlying physics of gas-molecule detection. 19,28–35 Furthermore, with gradual developments in computational techniques, first principle investigation can even be considered an independent technique for analysing and designing different small molecule-based gas sensors that can effectively guide experimental explorations. 36–38…”