A bis(cyclic carbonate) was obtained via glycidylation of lignin-based bisphenol followed by cycloaddition with CO2. Further polyaddition between the bis(cyclic carbonate) and diamines led to the synthesis of polyurethanes. The structure and thermal properties of these polyurethane materials were elucidated.

This paper reports the design and fabrication of a self-powered biosensing device based on TiO 2 nanosilks (NSs)@MoS 2 quantum dots (QDs) and demonstrates a bioapplication for the quantitative detection of exosomal RNA (Homo sapiens HOXA distal transcript antisense RNA, HOTTIP). This self-powered device features enhanced power output compared to TiO 2 NSs alone. This is attributed to the formation of a heterojunction structure with suitable band offset derived from the hybridization between TiO 2 NSs and MoS 2 QDs, i.e., the straddling (Type I) band

Novel acetylenic monomers containing Schiff-base and amino groups, (S)-N-(4-ethynylbenzylidene)-1-phenylethan-, and (R)-N-(4-ethynylbenzyl)-1-phenylethanamine (1e) were synthesized and polymerized with [(nbd)RhCl] 2 /Et 3 N catalyst to afford the corresponding polymers 2a-e with moderate molecular weights (M n 5 9000-60,000) in high yields (85-97%). All the polymers were soluble in common organic solvents including toluene, CHCl 3 , CH 2 Cl 2 , THF, and DMF. Large optical rotations and strong CD signals demonstrated that 2a, 2b, 2d, and 2e take helical structures with a predominantly one-handed screw sense. The effects of solvents and temperature revealed that these polymers took dynamic helical structure based on the steric effect of side groups. The CD patterns of 2d and 2e containing free amino moieties were completely inverted by the addition of benzoic acid. Upon further addition of NaOH, the CD pattern returned to the original one, indicating the reversible conformational change of these polymers according to pH.

Quick capacity loss due to the polysulfide shuttle effects is a critical challenge for high-performance lithium–sulfur (Li–S) batteries. Herein, a novel 2D/1D V2O5 nanoplates anchored carbon nanofiber (V-CF) interlayer coated on standard polypropylene (PP) separator is constructed, and a stabilization mechanism derived from a quasi-confined cushion space (QCCS) that can flexibly accommodate the polysulfide utilization is demonstrated. The incorporation of the V-CF interlayer ensures stable electron and ion pathway, and significantly enhanced long-term cycling performances are obtained. A Li–S battery assembled with the V-CF membrane exhibited a high initial capacity of 1140.8 mAh·g−1 and a reversed capacitance of 1110.2 mAh·g−1 after 100 cycles at 0.2 C. A high reversible capacity of 887.2 mAh·g−1 is also maintained after 500 cycles at 1 C, reaching an ultra-low decay rate of 0.0093% per cycle. The excellent electrochemical properties, especially the long-term cycling stability, can offer a promising designer protocol for developing highly stable Li–S batteries by introducing well-designed fine architectures to the separator.