New aluminum–organophosphorus hybrid nanorods (AOPH-NR) have been prepared by reacting aluminum hydroxide (ATH) with dibenzylphosphinic acid (DBPA) with aluminum hydroxide (ATH) and used to prepare nanocomposites with epoxy resin. In order to determine the structure–property relationship of these composites, several other phosphinic acids of the general formula (R(CH₂)_n)₂POOH (R = ester, allyl, nitrile, n = 1 or 2), and corresponding AOPHs were synthesized. FTIR, Raman, TGA, and XRD examinations showed that only AOPH-NR possesses a highly hybrid structure and high thermostability. SEM and TEM confirmed the nanorod morphology of AOPH-NR. The formation mechanism can be described as a decomposing–reforming process. This characteristic causes AOPH-NR to exhibit superior properties. Limiting oxygen index (LOI) determination and cone calorimeter analysis showed that the incorporation of only 4.25 wt% AOPH-NR remarkably improved the LOI value to as much as 28.0 and led to a 23% reduction in peak heat release rate (PHRR). Dynamic mechanical analysis (DMA) indicated that the mechanical properties of epoxy resin were also improved by incorporating AOPH-NR. In this way, the aluminum–organophosphorus hybridization via reacting ATH with specific organophosphinic acids shows promise as a means of improving flame retardancy and mechanical properties simultaneously. The thermal and anti-flaming properties of composites, combined with the properties of AOPHs, allowed us to discover the important role that the release and migration of phosphorus species plays in fire-retarding materials. This provides a new insight into the design of high-performance flame retardants.

A new type of microporous organic polymer with azaindole units (N-PEINK) has been designed. The resulting N-PEINK exhibits good chemical and thermal stability with a decomposition temperature of 550 °C. Taking advantage of the synergistic effect of local dipole–π and dipole–quadrupole interactions between azaindole and carbon dioxide (CO₂), the CO₂ uptake capacity of the polymer reaches 20.8 wt% (1.0 bar, 273 K) with high selectivities (CO₂/N₂ = 97, CO₂/CH₄ = 18), making the polymer a promising microporous material for application in CO₂ separation and capture. Furthermore, the azaindole-based microporous organic polymer also exhibits a high hydrogen storage (2.67 wt%) at 1.0 bar and 77 K. For comparison, the microporous organic polymer with indole units (PEINK) was also prepared.

The optoelectronic industry is focused on developing new electronic packaging materials to improve the performance of optoelectronic devices. In this paper, two novel benzocyclobutene-functional double-decker silsesquioxane macromonomers (2BCB-DDSQ and 4BCB-DDSQ) were synthesized via hydrolysis of phenyltrimethylsilane followed by hydrolytic condensation and platinum-catalyzed hydrosilylation. The resulting cured resins, thermally cured from viscous macromonomers by a solvent-free process, had high thermal stability and excellent optical and electrical properties compared with those features of a resin cured without DDSQ. Compared with the crosslinked porous microstructure of p-2BCB-DDSQ, we observed an orderly assembled structure, which was well dispersed in p-4BCB-DDSQ. We further used computer simulations to analyze these self-assembled hybrids, formed by π–π stacking and intramolecular/intermolecular crosslinking reactions. The unique microstructure of p-4BCB-DDSQ showed better performance compared to that of p-2BCB-DDSQ in terms of its low dielectric constant, low water uptake, high heat transfer rate, and high LED luminous efficiency. Hence, this material has potential applications in high-performance electronic packaging materials.

Replica symmetry breaking (RSB) has been widely recognized as a statistical analysis approach to understand the disorder and nonlinear interactions in complex systems ranging from atoms to the cosmic scale. However, it is challenging to analyze the nonlinear optical characteristics of random laser (RL) in disordered gain medium via RSB due to the lack of a general RSB‐based statistical analysis framework. In this work, we report the tunable RSB in polymer fiber RL, where the effects of temperature and different structures on RSB are investigated experimentally and theoretically. It experimentally proves that RSB in RL is not robust, and disorder and temperature are responsible for tunable RSB in RL, which contributes to the improvement of the statistical analysis framework for investigating the optical principles of RL using RSB. And the finding of the tunable RSB allows to investigate the dynamical differences for various RL systems, which broadens the directions for the use of spin‐glass theory to explore the physical mechanism of RL.