One-pot cellulose etherification and self-crosslinking via a mild hydroxyl–yne click reaction in a homogeneous system

Abstract

Chemical modification of cellulose in sustainable way is highly desirable for high performance cellulose derivatives. Herein, a novel one-pot etherification and self-crosslinking of cellulose was first demonstrated by applying the...

Efficient preparation of fluorescent nanomaterials derived from chitin via a modification-first strategy assisted by click chemistry

“…28 For FChN prepared with DMAP, the new peaks at 120–140 ppm and 155 ppm were both weakened, indicating that the amino activity was inhibited after the addition of DMAP. However, according to our previous work, 34 the characteristic peaks of newly formed vinyl ether bonds (–C–O–CC–) and benzene ring structure formed by hydroxyl–yne click chemistry were also present at around 120–140 ppm, so it cannot be inferred whether the hydroxyl groups were involved in the reaction or not.…”

“…It was possible that the double bond formed after grafting PPK undergoes a dimerization effect under light irradiation increasing the crosslinking sites and leading to improved mechanical properties. 40 The modified FChN films with high grafting amount (FChN8 and FChN9) showed little difference in tensile strength and elongation at break compared with the original DEChN films, which were 127.06 ± 5.87 MPa and 156.21 MPa, 5.80 ± 0.85% and 4.91 ± 0.84%, respectively (Fig. 5c).…”

Facile Graphene Oxide Modification Method via Hydroxyl-yne Click Reaction for Ultrasensitive and Ultrawide Monitoring Pressure Sensors

“…After 5 h of reaction, a series of modified GO materials were successfully prepared, referred to as GO-P. GO-P1, GO-P2, and GO-P3 were prepared from dodecyl propiolate, mPEG 200 propiolate, and mPEG 5000 propiolate, respectively. According to reports, the reaction mechanism of this chemical process is illustrated in Scheme S2. , This process may generate byproduct related to propiolates, but it can be effectively suppressed through appropriate operational procedures. Additionally, residual impurities (such as propiolate, catalyst, and byproducts, etc.)…”

“…According to reports, the reaction mechanism of this chemical process is illustrated in Scheme S2 . 48 , 53 This process may generate byproduct related to propiolates, but it can be effectively suppressed through appropriate operational procedures. Additionally, residual impurities (such as propiolate, catalyst, and byproducts, etc.)…”

“…Subsequently, the hydroxyl-yne click reaction was developed into the field of polymers by Tang and co-workers . The efficient polymerization of aromatic and aliphatic diols with diynes at room temperature , and the etherification of cellulosic materials , under similar conditions have been sequentially documented, affirming the suitability of hydroxyl groups in polymers for the hydroxyl-yne click reaction. Given the abundance of multiple hydroxyl groups on GO, it holds significant potential for modifications through the hydroxyl-yne click reaction.…”