Design of Intrinsically Stable Hole-Selective Self-Assembled Monolayers by Introducing Fused-Ring Intramolecular Donor-Acceptor Interactions.

Hole-selective self-assembled monolayers (SAMs) incorporating electron-donating conjugated units as head groups have witnessed remarkable success in helping achieve high-performance organic solar cells (OSCs). However, these molecules frequently exhibit a shallow lowest unoccupied molecular orbital (LUMO) level, rendering them prone to photodegradation. To tackle this problem, we introduce fused-ring intramolecular donor-acceptor (D-A) interactions into the design of SAM molecules to downshift the LUMO level.

Regiospecific Halogenation Modulates Molecular Dipoles in Self-Assembled Monolayers for High-Performance Organic Solar Cells.

Halogenated carbazole-derived self-assembled monolayers (SAMs) are promising hole-extraction materials in conventional organic solar cells (OSCs). While halogenation helps optimize the molecular dipole, intermolecular interactions, and energetics of SAM, the highly polarizable carbon-halogen bonds can be reactive and prone to photocleavage depending on their regiochemistry. Herein, we study the regiospecific properties, including the intrinsic stability, electrostatic potential (ESP) distribution, and changes in molecular dipole of the brominated SAM molecules by brominating a helical 7H-dibenzo[c,g]carbazole-based SAM (CbzNaph) featuring a stronger dipole.

Management of Malignant Pleural Effusion with ASEPT® Pleural Catheter: Quality of Life, Feasibility, and Patient Satisfaction.

. The PleurX® IPC system has been used extensively in the past. Over time, management of MPE with the PleurX system can be costly.