Aqueous Platinum(II)‐Cage‐Based Light‐Harvesting System for Photocatalytic Cross‐Coupling Hydrogen Evolution Reaction

Abstract

Photosynthesis is a process wherein the chromophores in plants and bacteria absorb light and convert it into chemical energy. To mimic this process, an emissive poly(ethylene glycol)‐decorated tetragonal prismatic platinum(II) cage was prepared and used as the donor molecule to construct a light‐harvesting system in water. Eosin Y was chosen as the acceptor because of its good spectral overlap with that of the metallacage, which is essential for the preparation of light‐harvesting systems. Such a combination showed enhanced catalytic activity in catalyzing the cross‐coupling hydrogen evolution reaction, as compared with eosin Y alone. This study offers a pathway for using the output energy from the light‐harvesting system to mimic the whole photosynthetic process.

Exogenously spermidine alleviates damage from drought stress in the photosystem II of tall fescue

“…Photosynthesis is the process by which living plants absorb, capture, transfer, and store energy from the sun (Hniličková et al 2017). In this process, the light energy is absorbed by a dense array of Chl molecules to the reaction center and then converted into chemical energy (Zhang et al 2019). Photosystem II is one of the most sensitive processes to stress (Huang et al 2020), which causes a series of changes due to drought.…”

Tetraphenylethylene-Based Emissive Supramolecular Metallacages Assembled by Terpyridine Ligands

“…Currently, a series of discrete two-dimensional (2D) macrocycles, three-dimensional (3D) cages, and nanomaterials with well-defined sizes and shapes were constructed by coordination-driven self-assembly. [35][36][37][38][39][40][41][42][43][44][45][46][47][48][49][50] In this field, Stang and co-workers 51 reported the first TPE-based supramolecular cage, which brought about the recent flourishing of AIE-active metalla-supramolecular cages with tunable properties. [52][53][54] Among most of these structures, the TPE moieties were either attached or embedded in the supramolecules, and their emissions still followed the classic AIE principle.…”

Luminescent Metallacycle‐Cored Liquid Crystals Induced by Metal Coordination

“…Especially, emissive SCCs derived from AIE fluorophores [7] take the advantages of the metal-coordination bonds to restrict the intramolecular motions (rotations or vibrations) of AIE molecules, thus benefiting the resulted SCCs good emission properties both in solution and in the solid state, which are of vital importance for their practical applications. The Stang group pioneered this study by using tetraphenylethene (TPE, a typical AIE molecule) derivatives to prepare a series of emissive SCCs [7] and explored their applications as chemo-sensors, [8] light-emitting materials, [9] contrast agents for bioimaging [10] , light-harvesting [11] and so on. Yang, Li and co-workers reported the preparation of emissive rosette-shaped SCCs using multitopic terpyridine-functionalized TPE as ligands, in which pure white-light emission could be generated from one of the SCCs.…”

“…Yang, Li and co-workers reported the preparation of emissive rosette-shaped SCCs using multitopic terpyridine-functionalized TPE as ligands, in which pure white-light emission could be generated from one of the SCCs. [12] Although much progress has been made on the emissive SCCs, [7][8][9][10][11][12] SCCs with both luminescent and mesogenic properties have been rarely reported yet. [13] The formation of liquid crystal phases by SCCs calls for dense molecular packing, which normally quenches the emission.…”