Charge Transport through Discrete Crystalline Architectures

Abstract

Multitudes of novel π-conjugated materials have gained tremendous attention with potential applications in next-generation electronic devices as they are chemically programmable, mechanically flexible, and lightweight. Modulating the intermolecular interactions emerging from the π-conjugated molecules govern crystal packing and plays a pivotal role in designing molecular organic semiconductors. Determining the dynamic origin of charge transport in organic crystals from a molecular perspective has often proved challenging. In this Perspective, we have compiled effective methods to regulate the charge transport characteristics of functional organic materials in their crystalline phase. The ardent efforts in designing advanced materials with desirable charge transport properties from a theoretical perspective by our group are emphasized.

Recent Progress in Porphyrin/g-C3N4 Composite Photocatalysts for Solar Energy Utilization and Conversion

“…Due to their potential applications in solar energy utilization and conversion, semiconductor-based photocatalysts have garnered significant attention in the field of energy and the environment. Photocatalytic reactions typically involve three steps [64][65][66]: (1) Generation of charge carriers: when semiconductors absorb light with energy equal to or greater than their corresponding bandgaps, photocarriers are generated. Excited by photons, electrons (e − ) move from the valence band (VB) to the conduction band (CB), creating positively charged holes (h + ) in the VB.…”

“…Due to their potential applications in solar energy utilization and conversion, semiconductor-based photocatalysts have garnered significant attention in the field of energy and the environment. Photocatalytic reactions typically involve three steps [64][65][66]:…”

Perspective, Review, and Featured Articles of 2023

“…35 Hariharan and co-workers describe the design of the crystallization structure for organic semiconductors, which can be tuned for charge transport through π-conjugated molecules. 36 Guiton and co-workers describe the use of environmental transmission electron microscopy to study the dynamic restructuring of nanostructures at the solid−gas interface. 37 Nanomechanical resonators for photothermal microscopy and spectroscopy have promise for single particle, and even single molecule detection, as described by West et al, but require a slight vacuum since it works by measuring the release of heat.…”

“…Hwang reviewed the current understanding of the effect of coordination chemistry in the synthesis of MHPs . Hariharan and co-workers describe the design of the crystallization structure for organic semiconductors, which can be tuned for charge transport through π-conjugated molecules . Guiton and co-workers describe the use of environmental transmission electron microscopy to study the dynamic restructuring of nanostructures at the solid–gas interface .…”

Exploring the influence of graphene on antiaromaticity of pentalene

“…4 Breslow proposed the antiaromatic term for molecules having cyclic conjugation with 4np electrons, which are destabilized in comparison to a non-cyclic conjugated reference molecule. 5 The narrow energy gap between the highest occupied molecular orbital (HOMO)-lowest unoccupied molecular orbital (LUMO) and higher conductivity [5][6][7][8][9] of antiaromatic compounds makes them potential candidates for the design of organic electronic materials, 10 including organic field-effect transistors (OFETs) 9,[11][12][13][14] and organic photovoltaics (OPVs). 13,14 Pentalene and its derivatives are some of the most widely exploited antiaromatic molecules for developing advanced optoelectronic devices.…”