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In this work, complex of Ni-modified graphene oxide was prepared and characterized using FT-IR spectroscopy, SEM, XRD, TGA and ICP-OES techniques. This compound used as an efficient and recoverable catalyst for the C–S coupling reaction using sulfur-transfer reagents (S₈ or thiourea). The catalyst was easily separated using a simple filtration and reusable without significant loss of their catalytic efficiency.

Complex of Ni-Modified Graphene Oxide was prepared and characterized using FT-IR spectroscopy, SEM, XRD, TGA and ICP-OES techniques. This compound used as an efficient and recoverable catalyst for the C–S coupling reaction using sulfur-transfer reagents (S₈ or thiourea).

The synthesis of highly microporous, epoxy-functionalized porous organic polymers (ep-POPs) by a one-pot, catalyst-free Diels–Alder cycloaddition polymerization is reported. The high oxygen content of ep-POPs offer efficient hydrogen-bonding sites for water molecules, thus leading to high water-uptake capacities up to 39.2–42.4 wt % under a wide temperature range of 5–45 °C, which covers the span of climatic conditions and manufacturing applications in which such materials might be used. Importantly, ep-POPs demonstrated regeneration temperatures as low as 55 °C, as well as excellent water stability, recyclability, and high specific surface areas up to 852 m² g⁻¹.

Thirsty polymers: Porous organic polymers incorporating epoxy moieties were synthesized by a one-pot, catalyst-free Diels–Alder cycloaddition polymerization. The hydrogen bonding between epoxy groups and water molecules optimizes binding affinity, thus balancing between high water uptake and low regeneration temperature.

The first general protocol for the direct reductive N-functionalization of aliphatic nitro compounds is presented. The nitro group is partially reduced to a nitrenoid, with a mild and readily available combination of B₂pin₂ and zinc organyls. Thereby, the formation of an unstable nitroso intermediate is avoided, which has so far severely limited reductive transformations of aliphatic nitro compounds. The reaction is concluded by an electrophilic amination of zinc organyls.

No N=O! The first general protocol for a direct reductive N-functionalization of aliphatic nitro compounds is presented. This type of transformation was so far limited to nitro compounds devoid of α-protons, due to the fast nitroso-oxime tautomerization. N-functionalization is enabled by an alternative reaction path via a more stable nitrenoid intermediate.

An environmentally friendly copper-based catalyst supported on 2-Methoxy-1-phenylethanone functionalized MCM-41 was prepared and characterized by FT-IR, FE-SEM, TEM, XRD, EDX, BET and ICP techniques. The catalyst was applied for the C−S cross-coupling reaction of aryl halides with thiourea. Corresponding products were produced in good yields in aerobic conditions. The catalyst could be recovered and recycled for several times.

Cu(II)-2-MPE@MCM-41 was prepared for the C–S cross-coupling reaction of aryl halides with thiourea and corresponding products were produced in good yields.

A poly(styrenesulfonic acid)-carboxymethylcellulose (PSSA-CMC) blend catalytic membrane was prepared for ethyl lactate production in a pervaporation-aided membrane reactor. The effects of PSSA/CMC concentration, initial molar ratio, and temperature on acid conversion were evaluated. Additionally, the separation performance of membrane was investigated as a function of flux and separation factor. Increasing the temperature enhanced lactic acid conversion at constant alcohol:acid ratio.

In order to achieve high lactic acid conversion associated with a high-purity final product without the need of a further purification step, a reactive and functional poly(styrenesulfonic acid)-carboxymethylcellulose blend catalytic membrane was developed and applied in a pervaporation-aided membrane reactor for ethyl lactate production. Excellent acid conversion could be realized.

“Paper” has greatly contributed to the development and spread of civilization. Even in today's “digitalized” world, paper continues to play a key role in socioeconomic growth, as is evidenced by the growth in global paper consumption. Unfortunately, the use of paper has its cost in terms of the exhaustion of world's natural resources. Consequently, new, cost-effective technologies that preserve natural resources are required for this purpose. Functional materials have revolutionized the way people think about developing new technologies. Especially important in this regard are “smart reactive materials,” which are capable of actively responding to external stimuli such as heat, light, mechanical stress, and specific molecular orientations. Moreover, functionalized chromogenic materials, which undergo reversible color switching upon external stimulation, have attracted great attention in the context of developing rewritable paper. Here, investigations of various materials and systems that are devised for use as rewritable paper are reviewed with the hope that the coverage will stimulate and guide future studies in this area.

“Rewritable Paper” functions as an alternate medium of documenting and can be reused multiple times based on a “write–erase–write” concept. This approach appears to be ideal for reducing paper-related negative environmental consequences. In this context, advantage of functional materials to perform design-driven reversible chromism has been explored to design rewritable papers.