Anion-π stacks of Lindqvist superoctahedra [Mo6O19]2− supported by caffeinium and theophyllinium cations

Panchromatic Donor-Acceptor Hybrid Materials for Near-Infrared-Activatable Photocatalytic Detoxification of Mustard Gas Simulants

Crystalline donor-acceptor (D-A) hybrid materials show a significant potential for photocatalytic applications, but achieving broad light absorption and high photocatalytic efficiency remains a challenge. To address this issue, herein, heteropoly blues, as electron donors, and N,N'-bis(N,N-dimethylaminoethyl)-1,4,5,8-naphthalenediimide (NDIDMA), as electron acceptors, have been introduced to these D-A hybrid materials to enhance their light-harvesting and photocatalytic capabilities. Consequently, heteropoly blue/naphthalenediimide D-A hybrid materials H2NDIDMA·[H5PMo8VIMo4VO40]·2DMF (1) have been synthesized. For comparison, the isostructural fully oxidized polyoxometalate-containing counterpart, H2NDIDMA·HPW12O40·2DMF (2), has also been prepared. As expected, hybrid 1 exhibited a broad light absorption range (300-2500 nm) and demonstrated superior photocatalytic decontamination abilities against mustard gas simulants under full-spectrum and near-infrared (NIR) light irradiation compared to hybrid 2. Remarkably, the heteropoly blues in hybrid 1 demonstrated high stability under catalytic conditions and in ambient environments. Additionally, these stable hybrids exhibited excellent recyclability without a loss of activity after five cycles.

Donor-Acceptor Hybrid Heterostructures: An Emerging Class of Photoactive Materials with Inorganic and Organic Semiconductive Components

Just as the heterojunctions in physics, donor-acceptor (D-A) heterostructures are an emerging class of photoactive materials fabricated from two semiconductive components at the molecular level. Among them, D-A hybrid heterostructures from organic and inorganic semiconductive components have attracted extensive attention in the past decades due to their combined advantages of high stability for the inorganic semiconductors and modifiability for the organic semiconductors, which are particularly beneficial to efficiently achieve photoinduced charge separation and transfer upon irradiations. In this review, by analogy with the heterojunctions in physics, a definition of the D-A heterostructures and their general design and synthetic strategies are given. Meanwhile, the D-A hybrid heterostructures are focused on and their recent advances in potential applications of photochromism, photomodulated luminescence, and photocatalysis summarized.