Selective monoformylation of naphthalene-fused propellanes for methylene-alternating copolymers

• Kenichi Kato,
• Tatsuki Hiroi,
• Seina Okada,
• Shunsuke Ohtani and
• Tomoki Ogoshi

Beilstein J. Org. Chem. 2025, 21, 1183–1191, doi:10.3762/bjoc.21.95

• followed by acid-mediated condensation. The linear copolymers show good solubility and carbon dioxide adsorption. Keywords: alternating copolymer; building block; formylation; gas adsorption; propellane; Introduction Combination of sp2- and sp3-hybridized atoms in core π-skeletons [1][2][3] is a key to

• transition and decomposition. Then, gas adsorption properties [46][69][70][71][72] were evaluated after the samples were activated in vacuo at 120 °C (Figure 3 and Figures S801 and S802 in Supporting Information File 1). Their chemical structures did not necessarily contain branched or ladder-type

• , the methylene-alternating copolymers displayed gas adsorption properties. Further studies are underway towards novel functional materials containing fully π-fused propellanes as flexible 3D building blocks. Chemical structures of fully π-fused propellanes and their typical reaction patterns toward

On the photoluminescence in triarylmethyl-centered mono-, di-, and multiradicals

• Daniel Straub,
• Markus Gross,
• Mona E. Arnold,
• Julia Zolg and
• Alexander J. C. Kuehne

Beilstein J. Org. Chem. 2025, 21, 964–998, doi:10.3762/bjoc.21.80

Factors influencing the performance of organocatalysts immobilised on solid supports: A review

• Zsuzsanna Fehér,
• Dóra Richter,
• Gyula Dargó and
• József Kupai

Beilstein J. Org. Chem. 2024, 20, 2129–2142, doi:10.3762/bjoc.20.183

• ] reactions. POFs [102] are hydrocarbon systems that contain pores, of which COFs are a subgroup. POFs are widely applied in the fields of gas adsorption and storage, the separation of gases, catalysis, energy storage, photocatalysis, etc., and have many different types, such as hyper-cross-linked polymers

Activated carbon as catalyst support: precursors, preparation, modification and characterization

• Melanie Iwanow,
• Tobias Gärtner,
• Volker Sieber and
• Burkhard König

Beilstein J. Org. Chem. 2020, 16, 1188–1202, doi:10.3762/bjoc.16.104

• be determined by gas adsorption–desorption measurements at 77 K. To obtain reproducible isotherms from the measurements, a controlled outgassing of the adsorbent with a defined temperature, change in pressure and residual pressure is necessary to remove all physisorbed species from the surface

Novel approach to hydroxy-group-containing porous organic polymers from bisphenol A

• Tao Wang,
• Yan-Chao Zhao,
• Li-Min Zhang,
• Yi Cui,
• Chang-Shan Zhang and
• Bao-Hang Han

Beilstein J. Org. Chem. 2017, 13, 2131–2137, doi:10.3762/bjoc.13.211

• 273 K and 1.0 bar. Meanwhile, the hydrogen and methane capacities are also investigated. Considering the gas adsorption properties, PPOPs may be a promising candidate for gas storage and separation materials. Results and Discussion Three multi-formyl compounds, i.e., two dialdehydes M1 and M2 [22] and

• 1.0 bar. These gas adsorption properties and high BET specific surface area may make the PPOPs appropriate candidates for materials for gas adsorption and storage. Experimental Preparation of PPOPs A mixture of BPA (50.0 mg, 0.22 mmol), terephthalaldehyde (59.0 mg, 0.44 mmol), and p-toluenesulfonic

• −1 for PPOP-2 and 200 cm3 g−1 for PPOP-3 for the purpose of clarity, respectively. (b) PSD profiles calculated by the original DFT method. The PSD profiles of PPOP-2 and PPOP-3 have been offset by 3 and 6 units for the purpose of clarity, respectively. Gravimetric gas adsorption isotherms for PPOP-1

Biomimetic molecular design tools that learn, evolve, and adapt

• David A Winkler

Beilstein J. Org. Chem. 2017, 13, 1288–1302, doi:10.3762/bjoc.13.125

• include, phosphor brightness, drug binding efficacy, toxicity, catalytic efficiency, ability of the material to support the growth of cells, efficiency of gas adsorption, and many others. The relationship between the materials genome and the fitness can be presented as a surface, commonly called the

• calculations. However, these are intractable for libraries of millions of porous materials. Thornton et al. recently showed how a combined artificial intelligence-based modelling paradigm could be combined with evolutionary algorithms to discover materials with superior gas-adsorption properties in a more

Supramolecular frameworks based on [60]fullerene hexakisadducts

• Andreas Kraft,
• Johannes Stangl,
• Ana-Maria Krause,
• Klaus Müller-Buschbaum and
• Florian Beuerle

Beilstein J. Org. Chem. 2017, 13, 1–9, doi:10.3762/bjoc.13.1

• °C. Sorption properties were determined for N2 and Ar gas adsorption via a BET study at 77 K. Therein, the framework shows Henry behavior and no microporosity with a surface area of 40 m2 g−1 for N2 and only 18 m2 g−1 for Ar (see Figure S14 in Supporting Information File 1). However, the measured N2

Robust C–C bonded porous networks with chemically designed functionalities for improved CO₂ capture from flue gas

• Damien Thirion,
• Joo S. Lee,
• Ercan Özdemir and
• Cafer T. Yavuz

Beilstein J. Org. Chem. 2016, 12, 2274–2279, doi:10.3762/bjoc.12.220

• cm−1), which loses intensity by the post-modification reactions. Gas adsorption (filled dots)-desorption (empty dots) isotherms and pore size distribution of COP-156 (black), COP-156-amine (blue) and COP-156-amidoxime (red). CO2 uptake under moist conditions at 40 °C of COP-156 (black) and COP-156

Carboxylated dithiafulvenes and tetrathiafulvalene vinylogues: synthesis, electronic properties, and complexation with zinc ions

• Yunfei Wang and
• Yuming Zhao

Beilstein J. Org. Chem. 2015, 11, 957–965, doi:10.3762/bjoc.11.107

• properties of the coordination polymer were investigated by infrared spectroscopy, cyclic voltammetry, powder X-ray diffraction, and differential scanning calorimetric analyses. Furthermore, the microscopic porosity and surface area of the Zn-TTFV coordination polymer were measured by nitrogen gas adsorption

• structures in the solid state with certain microscopic porosity. To assess the porous properties of Zn-TTFV 8, nitrogen gas adsorption analysis was conducted at 77 K. The adsorption isotherm shown in Figure 5A indicates a Type-II adsorption behaviour. Application of the Brunauer–Emmett–Teller (BET) model

• on the particles of 8 to show some kind of crystalline-like micromorphology. In line with the gas adsorption results, there were no relatively large pores on the micron scale observable in the particles (see the inset of Figure 5B). On the submicron scale, however, corrugated microporous features

Self-assembled organic–inorganic magnetic hybrid adsorbent ferrite based on cyclodextrin nanoparticles

• Ângelo M. L. Denadai,
• Frederico B. De Sousa,
• Joel J. Passos,
• Fernando C. Guatimosim,
• Kirla D. Barbosa,
• Ana E. Burgos,
• Fernando Castro de Oliveira,
• Jeann C. da Silva,
• Bernardo R. A. Neves,
• Nelcy D. S. Mohallem and
• Rubén D. Sinisterra

Beilstein J. Org. Chem. 2012, 8, 1867–1876, doi:10.3762/bjoc.8.215

• some discrepancy between the DLS and AFM particle size distributions has been observed, it has been previously reported in the literature for other systems [31][32]. Textural characterization by gas adsorption BET isotherms were carried out to investigate the free volume of the ferrites. Fe-Ni/Zn was

• and each one was obtained as the mean of 30 counts. Gas adsorption/desorption isotherm studies Textural characteristics of Fe-Ni/Zn or Fe-Ni/Zn/βCD samples were determined through nitrogen gas adsorption (Autosorb–Quantachrome Nova 1200) at liquid-nitrogen temperature. Nitrogen gas was used with a 25