5384-21-4Relevant articles and documents
Cycloaddition of bis-cyclohexa-2,4-dienones: Synthesis of novel carbocycles
Singh, Deepak,Deota, Pradeep T.
, p. 292 - 300 (2013)
Syntheses of novel carbocycles (4) and (5) based on cycloaddition of bis-cyclohexa-2,4-dienone (3) and cyclopentadiene is reported. An improved method for the preparation of tetramethyl bisphenol-F (2), a precursor of bis-cyclohexa-2,4-dienone (3), is also presented.
Synthesis, oxidation and crosslinking of tetramethyl bisphenol F (TMBPF)-based polymers for oxygen/nitrogen gas separations
Sundell, Benjamin J.,Shaver, Andrew T.,Liu, Qiang,Nebipasagil, Ali,Pisipati, Priya,Mecham, Sue J.,Riffle, Judy S.,Freeman, Benny D.,McGrath, James E.
, p. 5623 - 5634 (2014)
Amorphous, high glass transition, crosslinkable poly(arylene ether)s for gas purification membranes have been synthesized. The polymers include a moiety capable of several oxidation reactions and UV crosslinking. Structural identification was confirmed by 1H NMR and IR spectroscopy and molecular weights were determined by SEC. Two oxidation reactions of the polymers were identified, one by chemical treatment using Oxone and KBr and one by elevated thermal treatment in air. DSC and TGA were used for thermal characterization, and TGA, 1H NMR and ATR-FTIR revealed the progress of the thermal oxidation reactions. Both polymers produced tough, ductile films and gas transport properties of the non-crosslinked linear polymers and crosslinked polymer are compared. The O2 permeability of one exemplary non-crosslinked poly(arylene ether) was 2.8 Barrer, with an O2/N2 selectivity of 5.4. Following UV crosslinking, the O2 permeability decreased to 1.8 Barrer, and the O2/N2 selectivity increased to 6.2.
Eco-friendly Solvent-free Route to Alkyl- and Aryl-Bisphenols Catalyzed by Perchloric Acid-Silica
Deota, Pradeep T.,Singh, Deepak
, p. 1 - 7 (2020/07/21)
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Surface-accessible detection units in self-immolative polymers enable translation of selective molecular detection events into amplified responses in macroscopic, solid-state plastics
Yeung, Kimy,Kim, Hyungwoo,Mohapatra, Hemakesh,Phillips, Scott T.
supporting information, p. 5324 - 5327 (2015/05/13)
This Communication describes a strategy for incorporating detection units onto each repeating unit of self-immolative CDr polymers. This strategy enables macroscopic plastics to respond quickly to specific applied molecular signals that react with the plastic at the solid-liquid interface between the plastic and surrounding fluid. The response is a signal-induced depolymerization reaction that is continuous and complete from the site of the reacted detection unit to the end of the polymer. Thus, this strategy retains the ability of CDr polymers to provide amplified responses via depolymerization while simultaneously enhancing the rate of response of CDr-based macroscopic plastics to specific applied signals. Depolymerizable poly(benzyl ethers) were used to demonstrate the strategy and now are capable of depolymerizing in the context of rigid, solid-state polymeric materials.
