Recommanded Product: 56-17-7. In 2020.0 POLYM CHEM-UK published article about TRANSFER RADICAL POLYMERIZATION; SELF-ASSEMBLY BEHAVIOR; BLOCK-COPOLYMERS; STAR POLYMERS; THERMORESPONSIVE POLYMERS; UNIMOLECULAR MICELLES; GENE DELIVERY; DRUG; TEMPERATURE; PDMAEMA in [Zou, Hui; Wu, Qiliang; Li, Qianwei; Zhou, Li; Hou, Xiao-Hua] Hefei Univ Technol, Sch Chem & Chem Engn, Dept Polymer Sci & Engn, Hefei 230009, Anhui, Peoples R China; [Zou, Hui; Wu, Qiliang; Li, Qianwei; Zhou, Li; Hou, Xiao-Hua] Hefei Univ Technol, Anhui Key Lab Adv Catalyt Mat & React Engn, Hefei 230009, Anhui, Peoples R China; [Wang, Chunyao; Yuan, Weizhong] Tongji Univ, Sch Mat Sci & Engn, Shanghai 201804, Peoples R China in 2020.0, Cited 64.0. The Name is 2,2′-Disulfanediyldiethanamine dihydrochloride. Through research, I have a further understanding and discovery of 56-17-7.
A dumbbell-shaped copolymer (PDMAEMA)(4)-PCL-SS-PCL-(PDMAEMA)(4) with a lower critical solution temperature (LCST) and redox responses was first synthesized by the combination of ring opening polymerization (ROP), click chemistry and atom transfer radical polymerization (ATRP). Then a dumbbell-shaped copolymer (PDMAPS)(4)-PCL-SS-PCL-(PDMAPS)(4) with an upper critical solution temperature (UCST) and redox responses was obtained through the quaternization reaction between DMAEMA and excess 1,3-propane sultone. Both (PDMAEMA)(4)-PCL-SS-PCL-(PDMAEMA)(4) and (PDMAPS)(4)-PCL-SS-PCL-(PDMAPS)(4) were amphiphilic, and they could self-assemble into spherical micelles under certain conditions. Benefitting from the LCST-type thermoresponse of PDMAEMA and UCST-type thermoresponse of PDMAPS, both dumbbell-shaped copolymers (PDMAEMA)(4)-PCL-SS-PCL-(PDMAEMA)(4) and (PDMAPS)(4)-PCL-SS-PCL-(PDMAPS)(4) presented temperature-responsive properties. The morphology and size of their assemblies would be changed when the temperature is altered. Meanwhile, due to the redox-response of disulfide bonds, both (PDMAEMA)(4)-PCL-SS-PCL-(PDMAEMA)(4) and (PDMAPS)(4)-PCL-SS-PCL-(PDMAPS)(4) showed redox-responsive properties. When dl-dithiothreitol (DTT) was added into the systems, disulfide bonds were broken, causing the change of (PDMAEMA)(4)-PCL-SS-PCL-(PDMAEMA)(4) to PCL-(PDMAEMA)(4), while (PDMAPS)(4)-PCL-SS-PCL-(PDMAPS)(4) changed into PCL-(PDMAPS)(4). The distributions of R-h for both (PDMAEMA)(4)-PCL-SS-PCL-(PDMAEMA)(4) and (PDMAPS)(4)-PCL-SS-PCL-(PDMAPS)(4) assemblies broadened with asymmetric peaks, giving rise to curves with double peaks. After 24 h, DLS curves became symmetric with a single peak, and the R-h was about half that of the original assemblies. In the meantime, dispersed spherical micelles could be observed by TEM.
Recommanded Product: 56-17-7. About 2,2′-Disulfanediyldiethanamine dihydrochloride, If you have any questions, you can contact Zou, H; Wu, QL; Li, QW; Wang, CY; Zhou, L; Hou, XH; Yuan, WZ or concate me.
Reference:
Thiazine – an overview | ScienceDirect Topics,
,Thiazine | C4H5NS – PubChem