Tunable Crystalline Phases in UV-Curable PEG-Grafted Ladder-Structured Silsesquioxane/Polyimide Composites

Kim, Ryung Il; Shin, Jong-Il; Lee, Jong Suk; Lee, Jung Hyun; Lee, Albert S.; Hwang, Seung Sang

doi:10.3390/ma13102295

Cited by 5 publications

(2 citation statements)

References 42 publications

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“…The slightly hydrophobic character of tailor-made membranes Ultem [ 50 ], 6FDA-DAM:DABA [ 51 ], and Matrimid [ 52 ] was earlier reported. The surface modification with GO [ 53 ] and TS-1 showed ability to increase the hydrophobicity [ 54 ].…”

Section: Methodsmentioning

confidence: 82%

Removal of Ibuprofen from Water by Different Types Membranes

et al. 2021

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Ibuprofen separation from water by adsorption and pertraction processes has been studied, comparing 16 different membranes. Tailor-made membranes based on Matrimid, Ultem, and diaminobenzene/diaminobenzoic acid with various contents of zeolite and graphene oxide, have been compared to the commercial polystyrene, polypropylene, and polydimethylsiloxane polymeric membranes. Experimental results revealed lower ibuprofen adsorption onto commercial membranes than onto tailor-made membranes (10–15% compared to 50–70%). However, the mechanical stability of commercial membranes allowed the pertraction process application, which displayed a superior quantity of ibuprofen eliminated. Additionally, the saturation of the best-performing commercial membrane, polydimethylsiloxane, was notably prevented by atomic layer deposition of (3-aminopropyl)triethoxysilane.

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Section: Methodsmentioning

confidence: 82%

Removal of Ibuprofen from Water by Different Types Membranes

et al. 2021

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“…Following the literature [ 41 ], PEG 1000 MW (10.000 g, 10 mmol, 1 eq.) was added to a 3-necked round-bottom flask and flushed with nitrogen, to which THF (100 mL) was added and stirred until dissolved.…”

Section: Methodsmentioning

confidence: 99%

Expanding Glycomic Investigations through Thiol-Derivatized Glycans

2023

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N-(2-thioethyl)-2-aminobenzamide (TEAB), a novel glycan auxiliary, was synthesized and its utility was evaluated. The auxiliary was conjugated to glycans by reductive amination with the water-stable reagent 2-picoline borane complex. Glycan products, which ranged from 1 to 7 linked hexoses, were all isolated in yields ranging from 60% to 90% after purification by reverse-phase chromatography. The novel conjugate introduces a convenient, shelf-stable thiol directly onto the desired free glycans with purification advantages and direct modification with efficient reactions through alkenes, halides, epoxides, disulfides, and carboxylates in yields of 49% to 93%. Subsequently, a thiol-selective modification of the BSA protein was used to generate a neoglycoprotein with a bifunctional PEG–maleimide linker. To further illustrate the utility of a thiol motif, 2-thiopyridine activation of a thiol-containing support facilitated the covalent chromatographic purification of labeled glycans in yields up to 63%. Finally, initial proof of concept of implementation in a light printed microarray was explored and validated through FITC-labeled concanavalin A binding. In conclusion, the thiol-functionalized glycans produced greatly expand the diversity of bioconjugation tools that can be developed with glycans and enable a variety of biological investigations.

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