The conjugated macro–microporous polymer film (MA-CMP-F) showed enhanced sensing performance toward nitrotoluenes, compared with the control CMP-F.

We prepared a series of hollow sulfur-doped carbons with diverse S contents through the carbonization of microporous organic networks (MONs), which were synthesized through the Sonogashira coupling of thiophene moieties with different numbers of S atoms as building blocks. This preparation method enabled the doping level to be controlled without inducing any notable differences in textural and morphological characteristics, and these S-doped carbons did not show any notable differences in the chemical properties of carbon, regardless of the sulfur content. We used these well-controlled MON-derived carbons as a model to elucidate the role of sulfur dopants in the oxygen reduction reaction (ORR) and to investigate the relationship between the activities and work functions of carbonaceous catalysts. By excluding the effect of electrical properties of the S-doped carbon catalysts using conducting agents, we could successfully verify that increasing the number of dopants led to an enhancement in the ORR activities, and the high applicability of work function as the activity descriptor was also demonstrated. We believe that our experimental observations will provide a deeper understanding of carbonaceous electrocatalysts with p-block dopants, and the investigations performed in this study are also anticipated to serve as a rational guideline in designing carbonaceous catalysts for various electrochemical reactions.

Microporous organic polymer nanoparticles bearing tetraphenylethylene moieties (MOPTs) were prepared in the presence of poly(vinylpyrrolidone) (PVP). The PVP was entrapped into the microporous network of MOPT to form MOPT-P and played the roles of size control, porosity enhancement, and surface property management. MOPT materials without PVP showed superhydrophobicity with a water contact angle of 151°. In comparison, the MOPT-P showed excellent water compatibility. Moreover, due to the aggregation-induced emission property of tetraphenylethylene moieties, the MOPT-P showed emission and excellent emission-based sensing of nitrophenols in water with K sv values in the range of 1.26 × 10 4 ∼ 3.37 × 10 4 M −1 . It is noteworthy that the MOPT-P used water only as a sensing medium and did not require additional organic solvents to enhance water dispersibility of materials. The MOPT-P could be recovered and reused for the sensing at least five times.

A hollow and hydrophilic Suzuki coupling-based microporous organic polymer was engineered using a Sonogashira coupling based MOP.