Nanosheets of an Organic Molecular Assembly from Aqueous Medium Exhibit High Solid‐State Emission and Anisotropic Charge‐Carrier Mobility

Abstract

A π-conjugated amphiphilic diketopyrrolopyrrole (PDPP-Amphi) forms crystalline 2D supramolecular nanosheets in water when compared to that from methyl cyclohexane. These nanosheets exhibit high fluorescence quantum yield in the solid-state with anisotropic charge-carrier mobility of 0.33 cm V s .

A Hybrid Organogel of a Low Band Gap Diketopyrrolopyrrole with PC71BM: Phase Separated Morphology and Enhanced Photoconductivity

“…Figure a shows the normalized absorption spectra of the DPP‐Amide in monomer, aggregate and gel states. At very low concentrations, two distinct absorption bands, one at ∼ 428 nm, which arise due to π‐π* transition and a broad absorption with a maximum at ∼ 628 nm due to firm internal charge transfer from the donor to acceptor unit were observed . Extended conjugation results in broad absorption from 300–750 nm with an optical band gap of 1.61 eV.…”

Augmenting Photoinduced Charge Transport in a Single‐Component Gel System: Controlled In Situ Gel–Crystal Transformation at Room Temperature

“…Conductive materials composed of ingeniously self‐organized nanocables, for example, fibers, wires, and rods, made up of strategically designed organic π‐functional units are hugely appealing towards designing flexible and portable electronics . Substantial charge carrier delocalization owes to a long‐range order possessed by such nanocables.…”

Redox‐Active Peptide‐Functionalized Quinquethiophene‐Based Electrochromic π‐Gel

“…The absorption maximum of the aqueous gel state red‐shifted about 24 nm compared to that of typical solution state absorption. Upon dilution, the intensity of the absorption peak blue shifted, which signifies the formation of self‐assembled J ‐aggregate . This band could be originated due to π‐π* transition of π‐conjugated quinquethiophene backbone.…”