Direct Surface Pattern of Organic Crystals Based on Photoinduced Molecular Decomposition.

Lithography technology, as a key process, has been widely applied in the patterning treatment of inorganic crystals, thus providing important support for the manufacturing of electronic devices. However, it has been a challenge to pattern organic single crystals, as they are fragile and soluble in the solvents used in conventional methods. Addressing these limitations, we develop a direct photolithography strategy for patterning organic single crystals of 5-((9-ethyl-9-carbazol-3-yl)methylene)-2,2-dimethyl-1,3-dioxane-4,6-dione (5-CY MD), 2,2-dimethyl-5-(pyren-1-ylmethylene)-1,3-dioxane-4,6-dione (5-PYMD), and ()-2,2-dimethyl-5-(3-(10-phenylanthracen-9-yl)allylidene)-1,3-dioxane-4,6-dione (5- PAYAD) without compromising structural integrity.

Atomic Ce-Induced Adaptive Synergism for Self-Optimized Multi-Enzymatic Nanozyme Design for Soil Amendment.

Single-atom nanozymes (SAzymes) offer exceptional promise as next-generation substitutes for natural enzymes due to its superior catalytic performance. However, single active sites of SAzymes have predominantly been limited to mimicking a monofunctional enzymatic activity, which hinders their adaptability in complex biological systems. Herein, an innovative Ce-induced adaptive synergism is reported, which allows Ce single-atom to activate Ni-Fe dual-site adaptive synergy for boosting multi-enzymatic activities of Ce-modified nanozyme (Ce-MOF), along with finely tuned reactive oxygen species (ROS) production.

Space-Isolated Chromophore for Organic Blue Phosphorescence with High Efficiency and a Deep-Blue Lasing Characteristic.

High-efficiency blue phosphorescence and deep-blue laser emissions play a crucial role in organic optoelectronic applications. However, designing metal-free organic blue luminescence with high energy levels of excited states and suppression of nonradiative transitions remains a formidable challenge. Herein, we demonstrate a synthetic strategy for achieving a deep-blue laser and efficient phosphorescence based on confining chromophores in the tetrahedral structure of sp3 hybridization.

Organic Phosphorescence Lasing Based on a Thermally Activated Delayed Fluorescence Emitter.

Organic phosphorescence materials provide an opportunity to use triplets for lasing. However, population inversion based on phosphorescence is hard to establish, owing to low luminescent quantum efficiency and intensive optical loss. By comparison, thermally activated delayed fluorescence emitters exhibit excellent optical gain with the aid of the reverse intersystem crossing (RISC) process.