Citation: Xin De Tang, Xiao Chao Liang, Nian Feng Han. Y-shaped block copolymers of poly(ethylene glycol) and poly(N-isopropylacrylamide) synthesized by ATRP[J]. Chinese Chemical Letters, ;2009, 20(11): 1353-1356. doi: 10.1016/j.cclet.2009.06.007 shu

Y-shaped block copolymers of poly(ethylene glycol) and poly(N-isopropylacrylamide) synthesized by ATRP

a Institute of New Materials, Shandong Jiaotong University, Ji'nan 250023, China;
b College of Chemistry & Molecular Engineering, Peking University, Beijing 100871, China

Received Date: 19 March 2009

Fund Project: and the Science Research Fund of Shandong Jiaotong University of China (No. Z200802).the Visiting Scholar Project of Shandong Province of China (No. 20081001)The authors acknowledge financial support from the National Natural Science Foundation of China (No. 20134020)

Novel Y-shaped block copolymers of poly(ethylene glycol) and poly(N-isopropylacrylamide), PEG-b-(PNIPAM) ₂, were successfully synthesized through atom transfer radical polymerization (ATRP). A difunctional macroinitiator was prepared by esterification of 2,2-dichloroacetyl chloride with poly(ethylene glycol) monomethyl ether (PEG). The copolymers were obtained via the ATRP of N-isopropylacrylamide (NIPAM) at 30 ℃with CuCl/Me₆TREN as a catalyst system and DMF/H ₂ O (v/v=3:1)n mixture as solvent. The resulting copolymers were characterized by gel permeation chromatography (GPC) and ¹H NMR. These block copolymers show controllable molecular weights and narrow molecular weight distributions (PDI < 1.15). Their phase transition temperatures and the corresponding enthalpy changes in aqueous solution were measured by differential scanning calorimetry (DSC). As a result, the phase transition temperature of PEG ₄₅-b-(PNIPAM ₅₅) ₂ is higher than that of PNIPAM, however,the corresponding enthalpy change is much lower, indicating the significant influence of the macromolecular composition and architecture on the phase transition.
- Y-shaped,
- Block copolymer,
- Poly(ethylene glycol),
- Poly(N-isopropylacrylamide),
- Atom transfer radical polymerization (ATRP)
1. [1]
  Xinyu Liu , Jialin Yang , Zonglin He , Jiaoyan Ai , Lina Song , Baohua Liu . Linear polyurethanes with excellent comprehensive properties from poly(ethylene carbonate) diol. Chinese Chemical Letters, 2025, 36(1): 110236-. doi: 10.1016/j.cclet.2024.110236
2. [2]
  Xiaoxiao Huang , Zhi-Long He , Yangpeng Chen , Lei Li , Zhenyu Yang , Chunyang Zhai , Mingshan Zhu . Novel P-doping-tuned Pd nanoflowers/S,N-GQDs photo-electrocatalyst for high-efficient ethylene glycol oxidation. Chinese Chemical Letters, 2024, 35(6): 109271-. doi: 10.1016/j.cclet.2023.109271
3. [3]
  Yiwen Lin , Yijie Chen , Chunhui Deng , Nianrong Sun . Integration of resol/block-copolymer carbonization and machine learning: A convenient approach for precise monitoring of glycan-associated disorders. Chinese Chemical Letters, 2024, 35(12): 109813-. doi: 10.1016/j.cclet.2024.109813
4. [4]
  Yaxuan Jin , Chao Zhang , Guigang Zhang . Atomically dispersed low-valent Au on poly(heptazine imide) boosts photocatalytic hydroxyl radical production. Chinese Journal of Structural Chemistry, 2024, 43(12): 100414-100414. doi: 10.1016/j.cjsc.2024.100414
5. [5]
  Ming-Ming Gan , Zi-En Zhang , Xin Li , F. Ekkehardt Hahn , Ying-Feng Han . Hierarchical self-assembly of fluorinated poly-N-heterocyclic carbene pillarplexes with anions. Chinese Chemical Letters, 2025, 36(10): 110624-. doi: 10.1016/j.cclet.2024.110624
6. [6]
  Haojie Song , Laiyu Luo , Siyu Wang , Guo Zhang , Baojiang Jiang . Advances in poly(heptazine imide)/poly(triazine imide) photocatalyst. Chinese Chemical Letters, 2024, 35(10): 109347-. doi: 10.1016/j.cclet.2023.109347
7. [7]
  Jingfeng Yue , Zhenxin Tang , Yuxing Zhang , Zhongbao Jian . Oligomeric α-diimine nickel catalysts for enhanced ethylene polymerization. Chinese Chemical Letters, 2026, 37(1): 111930-. doi: 10.1016/j.cclet.2025.111930
8. [8]
  Mengjin Li , Tian Xia , Mengyu Wang , Yujie Peng , Sihan Zhang , Xueliang Jiang , Huan Yang . Biocarbon-Confined Bimetallic FeCo Metal-Organic Framework Orthogonal Nanosheet Arrays for Industry-level Ethylene Glycol Oxidation. Chinese Journal of Structural Chemistry, 2025, 44(8): 100627-100627. doi: 10.1016/j.cjsc.2025.100627
9. [9]
  Xiang Li , Beibei Zhang , Zhixiang Wang , Xiangyu Chen . Organocatalyzed iodine-mediated reversible-deactivation radical polymerization via photoinduced charge transfer complex catalysis. Chinese Chemical Letters, 2025, 36(6): 110383-. doi: 10.1016/j.cclet.2024.110383
10. [10]
  Hailong He , Wenbing Wang , Wenmin Pang , Chen Zou , Dan Peng . Double stimulus-responsive palladium catalysts for ethylene polymerization and copolymerization. Chinese Chemical Letters, 2024, 35(7): 109534-. doi: 10.1016/j.cclet.2024.109534
11. [11]
  Chong Liu , Ling Li , Jiahui Gao , Yanwei Li , Nazhen Zhang , Jing Zang , Cong Liu , Zhaopei Guo , Yanhui Li , Huayu Tian . The study of antibacterial activity of cationic poly(β-amino ester) regulating by amphiphilic balance. Chinese Chemical Letters, 2025, 36(2): 110118-. doi: 10.1016/j.cclet.2024.110118
12. [12]
  Yu-Yu Tan , Lin-Heng He , Wei-Min He . Copper-mediated assembly of SO₂F group via radical fluorine-atom transfer strategy. Chinese Chemical Letters, 2024, 35(9): 109986-. doi: 10.1016/j.cclet.2024.109986
13. [13]
  Weijian Zhang , Xianyu Deng , Liying Wang , Jian Wang , Xiuting Guo , Lianggui Huang , Xinyi Wang , Jun Wu , Linjia Jiang . Poly(ferulic acid) nanocarrier enhances chemotherapy sensitivity of acute myeloid leukemia by selectively targeting inflammatory macrophages. Chinese Chemical Letters, 2024, 35(9): 109422-. doi: 10.1016/j.cclet.2023.109422
14. [14]
  Chen Lian , Si-Han Zhao , Hai-Lou Li , Xinhua Cao . A giant Ce-containing poly(tungstobismuthate): Synthesis, structure and catalytic performance for the decontamination of a sulfur mustard simulant. Chinese Chemical Letters, 2024, 35(10): 109343-. doi: 10.1016/j.cclet.2023.109343
15. [15]
  Mengyuan Li , Xitong Ren , Yanmei Gao , Mengyao Mu , Shiping Zhu , Shufang Tian , Minghua Lu . Constructing bifunctional magnetic porous poly(divinylbenzene) polymer for high-efficient removal and sensitive detection of bisphenols. Chinese Chemical Letters, 2024, 35(12): 109699-. doi: 10.1016/j.cclet.2024.109699
16. [16]
  Haibo Ye , Qianyu Li , Juan Li , Didi Li , Zhimin Ao . Review on the abiotic degradation of biodegradable plastic poly(butylene adipate-terephthalate): Mechanisms and main factors of the degradation. Chinese Chemical Letters, 2025, 36(1): 109861-. doi: 10.1016/j.cclet.2024.109861
17. [17]
  Shuxin Liu , Jinjuan Ma , Aiguo Wang , Nan Zheng . Decomposable and sono-enzyme co-triggered poly(sonosensitizers) for precise and hypotoxic sonodynamic therapy. Chinese Chemical Letters, 2025, 36(4): 110032-. doi: 10.1016/j.cclet.2024.110032
18. [18]
  Qiang Luo , Jinfeng Sun , Zhibo Li , Bin Liu , Jianxun Ding . Thermo-sensitive poly(amino acid) hydrogel mediates cytoprotection through an antioxidant mechanism. Chinese Chemical Letters, 2025, 36(7): 110433-. doi: 10.1016/j.cclet.2024.110433
19. [19]
  Qi Wei , Hua Xin , Xiaolong Wang , Changjuan Qin , Yuanzhen Su , Di Li , Jianxun Ding . Unimolecular chiral poly(amino acid)s as adjuvants of nanovaccines for augmented cancer immunotherapy. Chinese Chemical Letters, 2025, 36(11): 111477-. doi: 10.1016/j.cclet.2025.111477
20. [20]
  Xiao Liu , Hangqi Liu , Qian Wang , Dandan Zheng , Sibo Wang , Masakazu Anpo , Guigang Zhang . Rational synthesis of poly(heptazine imides) nanorod in ternary LiCl/NaCl/KCl for visible light hydrogen production. Chinese Chemical Letters, 2025, 36(12): 111621-. doi: 10.1016/j.cclet.2025.111621

Get Citation

PDF

XML

Metrics

PDF Downloads(0)
Abstract views(1389)
HTML views(74)

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Address：Zhongguancun North First Street 2,100190 Beijing, PR China Tel: +86-010-82449177-888

DownLoad: Full-Size Img PowerPoint

Return