16578-60-2Relevant articles and documents
Multistimuli-responsive hydrogel particles prepared via the self-assembly of PEG-based hyperbranched polymers
Chen, Qian-Bao,You, Ye-Zi
, p. 677 - 679 (2015)
Generally, it is very difficult to obtain multistimuli-responsive hydrogel particles. Here, we introduce a novel method for the preparation of multistimuli-responsive hydrogel particles by adding water into the poly(ethylene glycol) (PEG)-based hyperbranched polymers. The produced PEG-base polymers via reversible addition-fragmentation chain transfer (RAFT) polymerization become temperature-sensitive and less soluble when heated above the lower critical solution temperature (LCST) after directly adding water. Subsequently, the hydrogel particles can be formed via hyperbranch-hyperbranch coupling through disulfide exchange. The resulting hydrogel particles are temperature-, photo-, and redox-responsive.
Photodegradable bridged silane and preparation method thereof
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Paragraph 0065; 0068; 0072-0074; 0077; 0080-0082; 0085; 0088, (2020/12/29)
The invention relates to photodegradable bridged silane and a preparation method thereof. The photodegradable bridged silane has a structure as shown in a formula I which is described in the specification. The method comprises the following steps: taking 1, 3-dimethyl-2-nitrobenzene as a raw material, carrying out oxidation reaction to obtain 2-nitro 1, 3-phthalic acid, carrying out reduction reaction on a carboxylic acid group to obtain 2-nitro-1, 3-benzenedimethanol, carrying out acylation reaction on the 2-nitro-1, 3-benzenedimethanol and chloroacetyl chloride to obtain 2-nitro-1, 3-benzenedichloroacetate, and finally carrying out substitution reaction on the 2-nitro-1, 3-benzenedichloroacetate and amino-containing silane to obtain the photodegradable bridged silane containing 2-nitrobenzyl. The photodegradable bridged silane obtained in the invention has good photoresponse performance, can be used for designing and preparing photoresponsive functional materials, and has important application value. The synthesis process is simple, raw materials are easy to obtain, reaction conditions are mild, and operability is high.
Programmed photodegradation of polymeric/oligomeric materials derived from renewable bioresources
Rajendran, Saravanakumar,Raghunathan, Ramya,Hevus, Ivan,Krishnan, Retheesh,Ugrinov, Angel,Sibi, Mukund P.,Webster, Dean C.,Sivaguru, Jayaraman
supporting information, p. 1159 - 1163 (2015/01/30)
Renewable polymeric materials derived from biomass with built-in phototriggers were synthesized and evaluated for degradation under irradiation of UV light. Complete decomposition of the polymeric materials was observed with recovery of the monomer that was used to resynthesize the polymers.