Biodegradable aliphatic/aromatic copoly(ester-ether)s: the effect of poly(ethylene glycol) on physical properties and degradation behavior

Fluorescent chemosensor for pyridine based on N-doped carbon dots

“…Apparently, N mainly exists as doping element in the core of the N-CDs, contributing to increase its QY. The absorption of the carbonyl group (C@O) at 1630 cm À1 is weak, due to the minor oxidation of the N-CDs in the outer surface [48], which explains the presence of the band at 1070-1030 cm À1 , attributed to the CAOAC stretching mode in N-CDs [49].…”

Reactive poly(phosphoester)-telechelics

“…[ Di-(undec-10-en-1-yl) phenylphosphate (2) Di-(undec-10-en-1-yl) phenylphosphate 2 was synthesized as reported earlier. [10] 2 was obtained as a clear oil (yield: 80 %; R f : 0.5 (CH 2 Cl 2 )).…”

“…In recent years, the production of degradable macromolecules has become more and more attractive due to the long halflife times of commodity plastics in nature, [1,2] as well as due to potential for biomedical applications such as to ensure the complete removal of the polymer from the body after treatment in order to prevent body accumulation. [3] Beside the various synthetic approaches to synthesize functional (usually non degradable) polymers by controlled radical polymerization or by other means, [4,5] the synthetic protocols for multifunctional and degradable polymers are still limited.…”

Effect of hard segment length on the properties of poly(ether ester) elastomer prepared by one pot copolymerization of poly(ethylene glycol) and cyclic butylene terephthalate

“…The soft segments consist of polyethers, such as poly(tetramethylene oxide)s (PTMOs, also known as poly(tetrahydrofuran)s or PTHFs) and poly(ethylene glycol), have a lower glass transition temperature and provide flexibility to the material. While the hard segments are aromatic semicrystalline polyesters, such as poly(butylene terephthalate) (PBT) [1][2][3][4][5], poly(ethylene terephthalate) (PET) [6], poly(trimethylene terephthalate) (PTT) [7], etc. They bave a highe glass transition temperature and give strength to the materials.…”