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Wang TT, Zhou YN, Luo ZH, Zhu S. Beauty of Explicit Dispersity ( Đ) Equations in Controlled Polymerizations. ACS Macro Lett 2023; 12:1423-1436. [PMID: 37812608 DOI: 10.1021/acsmacrolett.3c00484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/11/2023]
Abstract
Dispersity (Đ) as a critical parameter indicates the level of uniformity of the polymer molar mass or chain length. In the past several decades, the development of explicit equations for calculating Đ experiences a continual revolution. This viewpoint tracks the historical evolution of the explicit equations from living to reversible-deactivation polymerization systems. Emphasis is laid on displaying the charm of explicit Đ equations in batch reversible-deactivation radical polymerization (RDRP), with highlights of the relevant elegant mathematical manipulations. Some representative emerging applications enabled by the existing explicit equations are shown, involving nitroxide-mediated polymerization (NMP), atom transfer radical polymerization (ATRP), and reversible addition-fragmentation chain transfer (RAFT) polymerization systems. Stemming from the several outlined challenges and outlooks, sustained concerns about the explicit Đ equations are still highly deserved. It is expected that these equations will continue to play an important role not only in traditional polymerization kinetic simulation and design of experiments but also in modern intelligent manufacturing of precision polymers and classroom education.
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Affiliation(s)
- Tian-Tian Wang
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China
| | - Yin-Ning Zhou
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China
| | - Zheng-Hong Luo
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China
| | - Shiping Zhu
- School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen 518172, PR China
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2
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Meng XY, Li JJ, Liu P, Duan M, Wang J, Zhou YN, Xie Y, Luo ZH, Pan YX. Long-Term Stable Hydrogen Production from Water and Lactic Acid via Visible-Light-Driven Photocatalysis in a Porous Microreactor. Angew Chem Int Ed Engl 2023:e202307490. [PMID: 37318956 DOI: 10.1002/anie.202307490] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Revised: 06/14/2023] [Accepted: 06/15/2023] [Indexed: 06/17/2023]
Abstract
Photocatalytic hydrogen (H2) production is significant to overcome challenges like fossil fuel depletion and carbon dioxide emission, but its efficiency is still far below commercialization need. Herein we achieve long-term stable H2 bubbling production from water (H2O) and lactic acid via visible-light-driven photocatalysis in a porous microreactor (PP12) benefit for photocatalyst dispersion, charge separation, mass transfer and dissociation of O-H bonds of H2O. With the widely used platinum/cadmium-sulfide (Pt/CdS) as photocatalyst, PP12 leads to a H2 bubbling production rate of 602.5 mmol h-1 m-2, which is 1000 times higher than that in traditional reactor. Even when amplifying PP12 into a flat-plate reactor with an area as large as 1 m2 and elongating reaction time to 100 h, H2 bubbling production rate still remains at around 600.0 mmol h-1 m-2, offering a great potential for commercialization.
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Affiliation(s)
- Xin-Yu Meng
- Shanghai Jiao Tong University, Department of Chemistry and Chemical Engineering, CHINA
| | - Jin-Jin Li
- East China University of Science and Technology, School of Chemical Engineering, CHINA
| | - Peng Liu
- Shanghai Jiao Tong University, Department of Chemistry and Chemical Engineering, CHINA
| | - Mingyu Duan
- Peking University, Department of Advanced Manufacturing and Robotics, CHINA
| | - Jing Wang
- Institute of Process Engineering Chinese Academy of Sciences, Chemistry & Chemical Engineering Data Center, CHINA
| | - Yin-Ning Zhou
- Shanghai Jiao Tong University, Department of Chemistry and Chemical Engineering, CHINA
| | - Yongbing Xie
- Institute of Process Engineering Chinese Academy of Sciences, Chemistry & Chemical Engineering Data Center, CHINA
| | - Zheng-Hong Luo
- Shanghai Jiao Tong University, Department of Chemistry and Chemical Engineering, CHINA
| | - Yun-Xiang Pan
- Shanghai Jiao Tong University, Department of Instrument Science and Engineering, No. 800 Dongchuan Road, 200240, Shanghai, CHINA
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3
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Yu M, Shi Y, Jia Q, Wang Q, Luo ZH, Yan F, Zhou YN. Ring Repeating Unit: An Upgraded Structure Representation of Linear Condensation Polymers for Property Prediction. J Chem Inf Model 2023; 63:1177-1187. [PMID: 36651860 DOI: 10.1021/acs.jcim.2c01389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Unique structure representation of polymers plays a crucial role in developing models for polymer property prediction and polymer design by data-centric approaches. Currently, monomer and repeating unit (RU) approximations are widely used to represent polymer structures for generating feature descriptors in the modeling of quantitative structure-property relationships (QSPR). However, such conventional structure representations may not uniquely approximate heterochain polymers due to the diversity of monomer combinations and the potential multi-RUs. In this study, the so-called ring repeating unit (RRU) method that can uniquely represent polymers with a broad range of structure diversity is proposed for the first time. As a proof of concept, an RRU-based QSPR model was developed to predict the associated glass transition temperature (Tg) of polyimides (PIs) with deterministic values. Comprehensive model validations including external, internal, and Y-random validations were performed. Also, an RU-based QSPR model developed based on the same large database of 1321 PIs provides nonunique prediction results, which further prove the necessity of RRU-based structure representation. Promising results obtained by the application of the RRU-based model confirm that the as-developed RRU method provides an effective representation that accurately captures the sequence of repeat units and thus realizes reliable polymer property prediction by data-driven approaches.
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Affiliation(s)
- Mengxian Yu
- School of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin300457, P. R. China
| | - Yajuan Shi
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai200240, P. R. China
| | - Qingzhu Jia
- School of Marine and Environmental Science, Tianjin University of Science and Technology, Tianjin300457, P. R. China
| | - Qiang Wang
- School of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin300457, P. R. China
| | - Zheng-Hong Luo
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai200240, P. R. China
| | - Fangyou Yan
- School of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin300457, P. R. China
| | - Yin-Ning Zhou
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai200240, P. R. China
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4
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Wang TT, Luo ZH, Zhou YN. On the Precise Determination of Molar Mass and Dispersity in Controlled Chain-Growth Polymerization: A Distribution Function-Based Strategy. Macromolecules 2023. [DOI: 10.1021/acs.macromol.2c01861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Tian-Tian Wang
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai200240, PR China
| | - Zheng-Hong Luo
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai200240, PR China
| | - Yin-Ning Zhou
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai200240, PR China
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Shi Y, Yu M, Liu J, Yan F, Luo ZH, Zhou YN. Quantitative Structure–Property Relationship Model for Predicting the Propagation Rate Coefficient in Free-Radical Polymerization. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c01449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yajuan Shi
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, PR China
| | - Mengxian Yu
- School of Chemical Engineering and Material Science, Tianjin University of Science and Technology, Tianjin 300457, PR China
| | - Jie Liu
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, PR China
| | - Fangyou Yan
- School of Chemical Engineering and Material Science, Tianjin University of Science and Technology, Tianjin 300457, PR China
| | - Zheng-Hong Luo
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, PR China
| | - Yin-Ning Zhou
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, PR China
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Shi Y, Li JJ, Wang Q, Jia Q, Yan F, Luo ZH, Zhou YN. Computer-aided estimation of kinetic rate constant for degradation of volatile organic compounds by hydroxyl radical: An improved model using quantum chemical and norm descriptors. Chem Eng Sci 2022. [DOI: 10.1016/j.ces.2021.117244] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Shi Y, Wang J, Wang Q, Jia Q, Yan F, Luo ZH, Zhou YN. Supervised Machine Learning Algorithms for Predicting Rate Constants of Ozone Reaction with Micropollutants. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.1c04697] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Yajuan Shi
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Jiang Wang
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Qiang Wang
- School of Chemical Engineering and Material Science, Tianjin University of Science and Technology, Tianjin, 300457, P. R. China
| | - Qingzhu Jia
- School of Marine and Environmental Science, Tianjin University of Science and Technology, Tianjin, 300457, P. R. China
| | - Fangyou Yan
- School of Chemical Engineering and Material Science, Tianjin University of Science and Technology, Tianjin, 300457, P. R. China
| | - Zheng-Hong Luo
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Yin-Ning Zhou
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
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8
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Zhou Y, Zhou YN, Liu SX, Wang J, Ji R, Yan X. Effects of PIM3 in prognosis of colon cancer. Clin Transl Oncol 2021; 23:2163-2170. [PMID: 33928496 DOI: 10.1007/s12094-021-02624-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Accepted: 04/13/2021] [Indexed: 11/29/2022]
Abstract
PURPOSE PIM kinase is called proto-oncogene, but there are less research on PIM family in colon cancer. This study was designed to explore the prognosis of PIM3 in colon cancer. METHODS In this study, we downloaded RNA-seq and clinical information of colon cancer from the Gene Expression Omnibus (GEO) database. Kaplan-Meier method was used for analyzing the impact of PIM3 on the survival of patients with colon cancer. Single-factor and multi-factor cox regression analysis were used for verifying the prognostic value of PIM3. Spearman correlation analysis was used for screening PIM3 related genes. Functional enrichment analysis was used for analyzing the biological functions and pathways in which PIM3 related genes may be involved. STRING online tools were used for building a co-expression network. Cytoscape was used for co-expression network visualization. RESULTS Compared with the low expression group, the patients in the PIM3 high expression group lived longer time. Single-factor and multi-factor cox regression analysis indicated that PIM3 was an independent prognostic factor for colon cancer. Sixty-two PIM3 related genes were screened, and GO and KEGG enrichment analyses suggested that PIM3 related genes might be involved in the MAPK and WNT pathways. The co-expression network showed a strong correlation between PIM3 and MLKL, MYL5, PPP3R1 and other genes. CONCLUSIONS PIM3 is an independent prognostic factor of colon cancer and may be a target for the diagnosis and treatment of colon cancer.
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Affiliation(s)
- Y Zhou
- Department of Geriatrics (II), The First Hospital of Lanzhou University, Lanzhou, 730000, People's Republic of China
| | - Y N Zhou
- Department of Gastroenterology, The First Hospital of Lanzhou University, No.1 Donggangxi Road, Chengguan District, Lanzhou, 730000, People's Republic of China.
| | - S X Liu
- Department of Geriatrics (II), The First Hospital of Lanzhou University, Lanzhou, 730000, People's Republic of China
| | - J Wang
- Department of Geriatrics (II), The First Hospital of Lanzhou University, Lanzhou, 730000, People's Republic of China
| | - R Ji
- Department of Gastroenterology, The First Hospital of Lanzhou University, No.1 Donggangxi Road, Chengguan District, Lanzhou, 730000, People's Republic of China
| | - X Yan
- Department of Geriatrics (II), The First Hospital of Lanzhou University, Lanzhou, 730000, People's Republic of China
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9
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Figueira FL, Wu YY, Zhou YN, Luo ZH, Van Steenberge PHM, D'hooge DR. Coupled matrix kinetic Monte Carlo simulations applied for advanced understanding of polymer grafting kinetics. REACT CHEM ENG 2021. [DOI: 10.1039/d0re00407c] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
An innovative coupled matrix-based Monte Carlo (CMMC) concept has been applied to successfully assess the detailed description of the molecular build-up of linear and non-linear chains in the free-radical induced grafting of linear precursors chains.
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Affiliation(s)
| | - Yi-Yang Wu
- Department of Chemical Engineering
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Metal Matrix Composites
- Shanghai Jiao Tong University
- Shanghai 200240
| | - Yin-Ning Zhou
- Department of Chemical Engineering
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Metal Matrix Composites
- Shanghai Jiao Tong University
- Shanghai 200240
| | - Zheng-Hong Luo
- Department of Chemical Engineering
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Metal Matrix Composites
- Shanghai Jiao Tong University
- Shanghai 200240
| | | | - Dagmar R. D'hooge
- Laboratory for Chemical Technology (LCT)
- Ghent University
- Belgium
- Centre for Textile Science and Engineering (CTSE)
- Ghent University
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10
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Wang TT, Wu YY, Luo ZH, Zhou YN. “Living” Polymer Dispersity Quantification for Nitroxide-Mediated Polymerization Systems by Mimicking a Monodispersed Polymer Blending Strategy. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c02029] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Tian-Tian Wang
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Yi-Yang Wu
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Zheng-Hong Luo
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Yin-Ning Zhou
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
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11
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Chen YL, Wang H, Zhou YN, Lu ZH, Peng M, Sun F, Huang YH. [Epidemiological characteristics of COVID-19 in Wuchang district of Wuhan]. Zhonghua Liu Xing Bing Xue Za Zhi 2020; 41:1616-1622. [PMID: 33297617 DOI: 10.3760/cma.j.cn112338-20200412-00565] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To analyzes epidemiological characteristics of COVID-19 and provide evidence for adjustment for COVID-19 prevention and control strategies. Methods: The data of COVID-19 cases in Wuchang district reported as of 19 March, 2020 were obtained from National Notifiable Disease Report System of Chinese Disease Prevention and Control Information System. The software's of Excel 2010, SPSSS 22.0, Arc GIS10.2 and Joinpoint regression program 4.8.0.0 were used for statistical analysis. Results: A total of 7547 COVID-19 cases had been reported as of 19 March, 2020 in Wuchang district, including 5 448 confirmed cases (72.19%), 2009 clinical diagnosed cases (26.62%) and 90 asymptomatic cases case (1.19%). The age of the cases was (56.65±16.25) years and age ranged from 2 days to 105 years among confirmed cases, 2634 were males (48.35%) and 2814 were females (51.65%), 2 492 were retirees (45.74%). A total of 545 health workers were infected with SARS-CoV-2 (7.22% of all cases) including 365 confirmed cases and 5 cases have died. A total of 430 cases of death were reported with case fatality rate of 7.89% (430/5 448), case fatality rate of males (10.9%, 266/2 634) was higher than that of females (5.82%, 164/2 814). The first phase of epidemic peak was from January 24 to January 26, the second phase of epidemic peak was from February 1 to February 5 and there was no one of new confirmed case in one day for the first time on March 18. The first four Streets with the highest incidence rates of confirmed cases were Huanghelou Street (1 043.77/100 000), Ziyang Street (627.97/100 000), Yangyuan Street (503.67/100 000) and Shuiguohu Street (486.02/100 000). Compared with females, aged ≤50 years and mild cases of clinical classification respectively, males (RR=0.690, 95%CI: 0.322-1.478), aged >50 years (RR=11.745, 95%CI: 6.878-20.058), severe cases (RR=2.317, 95%CI: 1.789-3.000) and critical cases of clinical classification (RR=10.794, 95%CI: 7.997-14.569), and gender time-dependent covariate (RR=1.392, 95%CI: 1.053-1.840) were major influencing factors of prognosis of COVID-19 confirmed cases. Conclusions: The gender, ages and occupation of distribution were wide among COVID-19 cases in Wuchang district. Males, aged >50 years, severe cases and critical cases of clinical classification were influencing factors of prognosis of COVID-19 confirmed cases. The standardized management of discharged cases, asymptomatic infected cases and close contact persons were main measures to reduce incidence rates of COVID-19 cases.
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Affiliation(s)
- Y L Chen
- Jiyuqiao Street Community Health Service Center of Wuchang District of Wuhan, Wuhan 430071, China
| | - H Wang
- Wuhan Wuchang District Health Bureau, Wuhan 430071, China
| | - Y N Zhou
- Hubei Provincial Hospital of Traditional Chinese Medicine, Wuhan 430071, China
| | - Z H Lu
- Renmin Hospital of Wuhan University, Wuhan 430071, China
| | - M Peng
- Hubei Provincial Hospital of Traditional Chinese Medicine, Wuhan 430071, China
| | - F Sun
- Hubei Provincial Hospital of Traditional Chinese Medicine, Wuhan 430071, China
| | - Y H Huang
- Hubei Provincial Hospital of Traditional Chinese Medicine, Wuhan 430071, China
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12
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Wang HY, Zeng X, Bai SY, Pu K, Zheng Y, Ji R, Guo QH, Guan QL, Wang YP, Zhou YN. The safety and efficacy of endoscopic submucosal dissection for treating early oesophageal carcinoma: a meta-analysis. Ann R Coll Surg Engl 2020; 102:702-711. [PMID: 32820658 DOI: 10.1308/rcsann.2020.0177] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
INTRODUCTION Oesophageal carcinoma is the sixth most lethal cancer in the world. At present, the choice of specific surgical methods is controversial. This study compares the safety and efficacy of endoscopic submucosal dissection and endoscopic mucosal resection in treating early oesophageal carcinoma. METHODS We carried out a search of online databases including the Web of Science, PubMed, Embase and the Cochrane Library with no language restrictions. The inclusion criteria were patients with early oesophageal carcinoma who accepted the treatment of endoscopic submucosal dissection compared with endoscopic mucosal resection. FINDINGS A total of 1,462 patients with 1,650 lesions from nine studies were included in the meta-analysis. When compared with the endoscopic mucosal resection group, the en bloc resection (endoscopic submucosal dissection 67.94% vs endoscopic mucosal resection 52.78%; odds ratio 19.79, p = 0.000) and complete resection (endoscopic submucosal dissection 75.57% vs endoscopic mucosal resection 59.47%; odds ratio 16.10, p = 0.000) rates were significantly higher in the endoscopic submucosal dissection group, while the local recurrence rate was significantly lower in the endoscopic submucosal dissection group (endoscopic submucosal dissection 0.08% vs endoscopic mucosal resection 2.66%; odds ratio 0.08, p = 0.000). The incidence of complications and procedural time were also tested.
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Affiliation(s)
- H Y Wang
- Department of Gastroenterology, First Hospital of Lanzhou University, Lanzhou, Gansu, China.,Key Laboratory for Gastrointestinal Diseases of Gansu Province, Lanzhou University, Lanzhou, Gansu, China
| | - X Zeng
- Department of Gastroenterology, First Hospital of Lanzhou University, Lanzhou, Gansu, China.,Key Laboratory for Gastrointestinal Diseases of Gansu Province, Lanzhou University, Lanzhou, Gansu, China
| | - S Y Bai
- Department of Gastroenterology, First Hospital of Lanzhou University, Lanzhou, Gansu, China.,Key Laboratory for Gastrointestinal Diseases of Gansu Province, Lanzhou University, Lanzhou, Gansu, China
| | - K Pu
- Department of Gastroenterology, First Hospital of Lanzhou University, Lanzhou, Gansu, China.,Key Laboratory for Gastrointestinal Diseases of Gansu Province, Lanzhou University, Lanzhou, Gansu, China
| | - Y Zheng
- Department of Gastroenterology, First Hospital of Lanzhou University, Lanzhou, Gansu, China.,Key Laboratory for Gastrointestinal Diseases of Gansu Province, Lanzhou University, Lanzhou, Gansu, China
| | - R Ji
- Department of Gastroenterology, First Hospital of Lanzhou University, Lanzhou, Gansu, China.,Key Laboratory for Gastrointestinal Diseases of Gansu Province, Lanzhou University, Lanzhou, Gansu, China
| | - Q H Guo
- Department of Gastroenterology, First Hospital of Lanzhou University, Lanzhou, Gansu, China.,Key Laboratory for Gastrointestinal Diseases of Gansu Province, Lanzhou University, Lanzhou, Gansu, China
| | - Q L Guan
- Department of Oncological Surgery, First Hospital of Lanzhou University, Lanzhou, Gansu, China
| | - Y P Wang
- Department of Gastroenterology, First Hospital of Lanzhou University, Lanzhou, Gansu, China.,Key Laboratory for Gastrointestinal Diseases of Gansu Province, Lanzhou University, Lanzhou, Gansu, China
| | - Y N Zhou
- Department of Gastroenterology, First Hospital of Lanzhou University, Lanzhou, Gansu, China.,Key Laboratory for Gastrointestinal Diseases of Gansu Province, Lanzhou University, Lanzhou, Gansu, China
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13
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Liu YX, Bian C, Zhou YN, Li JJ, Luo ZH. Kinetic Study on Ultraviolet Light-Induced Solution Atom Transfer Radical Polymerization of Methyl Acrylate Using TiO 2. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c01534] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yuan-Xing Liu
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Chao Bian
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Yin-Ning Zhou
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Jin-Jin Li
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Zheng-Hong Luo
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
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14
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Abstract
The past decades have witnessed an increasing interest in developing advanced polymerization techniques subjected to external fields. Various physical modulations, such as temperature, light, electricity, magnetic field, ultrasound, and microwave irradiation, are noninvasive means, having superb but distinct abilities to regulate polymerizations in terms of process intensification and spatial and temporal controls. Gas as an emerging regulator plays a distinctive role in controlling polymerization and resembles a physical regulator in some cases. This review provides a systematic overview of seven types of external-field-regulated polymerizations, ranging from chain-growth to step-growth polymerization. A detailed account of the relevant mechanism and kinetics is provided to better understand the role of each external field in polymerization. In addition, given the crucial role of modeling and simulation in mechanisms and kinetics investigation, an overview of model construction and typical numerical methods used in this field as well as highlights of the interaction between experiment and simulation toward kinetics in the existing systems are given. At the end, limitations and future perspectives for this field are critically discussed. This state-of-the-art research progress not only provides the fundamental principles underlying external-field-regulated polymerizations but also stimulates new development of advanced polymerization methods.
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Affiliation(s)
- Yin-Ning Zhou
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Jin-Jin Li
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Yi-Yang Wu
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Zheng-Hong Luo
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
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15
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Zhao RH, Zhou YN, Li H, Li R, Zhang WJ, Zong H. [Influence of apatinib and VEGFR2-906T>C polymorphism on clinical outcomes of advanced non-small cell lung cancer patients]. Zhonghua Yi Xue Za Zhi 2019; 99:105-110. [PMID: 30669747 DOI: 10.3760/cma.j.issn.0376-2491.2019.02.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the clinical outcomes of advanced non-small cell lung cancer (NSCLC) treated by apatinib regimens and the influence of VEGFR2-906T>C polymorphism. Methods: A total of 109 patients with advanced NSCLC who were treated by apatinib after three and more lines from March 2015 to December 2017 in the Department of Oncology of the First Affiliated Hospital of Zhengzhou University were included in this study. Overall response rates were evaluated after 2 cycles, then progression free survival (PFS) and overall survival (OS) were investigated, and safety data were recorded. Additionally, peripheral blood and the biopsy tissue specimens of some NSCLC patients were collected for the genotyping of genetic variation and VEGFR2 gene mRNA expression, respectively. The association between genotype and other characteristics and VEGFR2 gene mRNA expression were analyzed. The univariate analysis of genotypes and prognosis was carried out by Kaplan-Meier survival analysis, and multivariate analysis were adjusted by Cox regression analysis. Results: The treatment effect could be evaluated in all the 109 patients, among them, complete remission (CR) 0 case, partial remission (PR) 19 case, stable disease (SD) 58 case, progression disease (PD) 32 case. Overall response rate (ORR) was 17.43%, disease control rate (DCR) was 70.64%, median PFS was 4.35 months, median OS was 8.35 months. Of the polymorphisms analyzed, only -906T>C was of clinical significance. The prevalence of -906T>C in VEGFR2 among the study population were as follows: TT genotype 64 cases (58.72%), TC genotype 37 cases (33.94%), CC genotype 8 cases (7.34%), minor allele frequency of -906T>C was 0.24. The distribution of three genotypes was in accordance with Hardy-Weinberg Equilibrium (P=0.418). CC and TC genotype patients were merged in the comparison of clinical outcomes. The analysis of patients with different genotypes found that the ORR of CC/TC genotypes and TT genotypes were 13.33% and 20.31% (P=0.377), respectively. And the median PFS of patients with CC/TC genotype and TT genotype were 3.25 and 5.35 months, respectively, which was statistically significant (P=0.007). In terms of OS, the median OS of the two genotypes were 7.35 and 9.15 (P=0.014), respectively. Adjusted in multivariate Cox regression analysis of PFS, TC/CC genotypes were an independent factor for PFS (OR=1.83, P=0.015). The correlation between -906T>C and adverse reactions was not found in the safety analysis. Additionally, of the 69 biopsy tissue specimens, gene expression analysis was conducted. And the results show that the mRNA expression of VEGFR2 in cancer tissues of the patients with CC/TC genotypes were significantly higher than those of the TT genotype patients (P<0.001). Conclusions: Apatinib is safe and effective for patients with advanced non-small cell in multiline therapy. VEGFR2 -906T>C CC/TC genotype has a worse effect on apatinib multiline treatment in patients with advanced NSCLC.
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Affiliation(s)
- R H Zhao
- Department of Oncology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
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16
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Li JJ, Zhou YN, Luo ZH, Zhu S. A polyelectrolyte-containing copolymer with a gas-switchable lower critical solution temperature-type phase transition. Polym Chem 2019. [DOI: 10.1039/c8py01265b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A polyelectrolyte-containing copolymer with a CO2/N2-switchable cloud point, resulting from the gas-induced alternation of hydrophilicity, was prepared.
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Affiliation(s)
- Jin-Jin Li
- Department of Chemical Engineering
- McMaster University
- Hamilton
- Canada
- Department of Chemical Engineering
| | - Yin-Ning Zhou
- Department of Chemical Engineering
- McMaster University
- Hamilton
- Canada
- Department of Chemical Engineering
| | - Zheng-Hong Luo
- Department of Chemical Engineering
- School of Chemistry and Chemical Engineering
- Shanghai Jiao Tong University
- Shanghai
- China
| | - Shiping Zhu
- Department of Chemical Engineering
- McMaster University
- Hamilton
- Canada
- School of Science and Engineering
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17
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18
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Shi P, Qiu QS, Zhuang G, Gao L, Zhou YN, Zhou CX. Measurement of density fluctuation propagation direction via the far-forward collective scattering diagnostic based on polarimeter-interferometer. Rev Sci Instrum 2018; 89:10C110. [PMID: 30399876 DOI: 10.1063/1.5038845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2018] [Accepted: 08/06/2018] [Indexed: 06/08/2023]
Abstract
Previously, the 17-channel three-wave polarimeter-interferometer system (POLARIS) on the J-TEXT tokamak has been implemented to measure far-forward collective scattering (FFCS) from electron density fluctuations. Recently, this system has been exploited to measure the propagation direction of density fluctuation. After considering the refraction of the laser probe beam passing through plasma, the ray tracing result shows that the detector of POLARIS may receive asymmetric far-forward scattering beams. Thus, the heterodyne detection of FFCS is available to identify the propagation direction of density fluctuation by resolving the asymmetric scattering spectrum. Experimentally, the transform of the heterodyne scattering spectrum from symmetry to asymmetry has been observed, while the refraction effect becomes strong demonstrating the capacity of measuring the propagation direction of fluctuation. Furthermore, by changing the plasma potential through the use of an applied positive electrode biasing, the reverse of frequency shift for the heterodyne scattering spectrum is identified, confirming the validity of direction discrimination of density fluctuation.
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Affiliation(s)
- P Shi
- International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics, State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Q S Qiu
- International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics, State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - G Zhuang
- International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics, State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - L Gao
- International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics, State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Y N Zhou
- International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics, State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - C X Zhou
- International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics, State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
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19
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Zhou YN, Li JJ, Ljubic D, Luo ZH, Zhu S. Mechanically Mediated Atom Transfer Radical Polymerization: Exploring Its Potential at High Conversions. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b01153] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Yin-Ning Zhou
- Department of Chemical Engineering, McMaster University, Hamilton, ON, Canada L8S 4L7
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, China 200240
| | - Jin-Jin Li
- Department of Chemical Engineering, McMaster University, Hamilton, ON, Canada L8S 4L7
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, China 200240
| | - Darko Ljubic
- Department of Chemical Engineering, McMaster University, Hamilton, ON, Canada L8S 4L7
| | - Zheng-Hong Luo
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, China 200240
| | - Shiping Zhu
- Department of Chemical Engineering, McMaster University, Hamilton, ON, Canada L8S 4L7
- School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen, China 518172
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20
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Bian C, Zhou YN, Guo JK, Luo ZH. Aqueous Metal-Free Atom Transfer Radical Polymerization: Experiments and Model-Based Approach for Mechanistic Understanding. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b00348] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Chao Bian
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Yin-Ning Zhou
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Jun-Kang Guo
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Zheng-Hong Luo
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
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21
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Affiliation(s)
- Yin-Ning Zhou
- Department
of Chemical Engineering, McMaster University, Hamilton, ON, Canada L8S 4L7
- Department
of Chemical Engineering, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, China 200240
| | - Lei Lei
- Department
of Chemical Engineering, McMaster University, Hamilton, ON, Canada L8S 4L7
| | - Zheng-Hong Luo
- Department
of Chemical Engineering, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, China 200240
| | - Shiping Zhu
- Department
of Chemical Engineering, McMaster University, Hamilton, ON, Canada L8S 4L7
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22
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Affiliation(s)
- Jun-Kang Guo
- Dept. of Chemical Engineering, School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites; Shanghai Jiao Tong University; Shanghai 200240 P.R. China
| | - Yin-Ning Zhou
- Dept. of Chemical Engineering, School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites; Shanghai Jiao Tong University; Shanghai 200240 P.R. China
| | - Zheng-Hong Luo
- Dept. of Chemical Engineering, School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites; Shanghai Jiao Tong University; Shanghai 200240 P.R. China
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23
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Zhou YN, Luo ZH. Assessment of kinetics of photoinduced Fe-based atom transfer radical polymerization under conditions using modeling approach. AIChE J 2017. [DOI: 10.1002/aic.15850] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Yin-Ning Zhou
- Dept. of Chemical Engineering; School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University; Shanghai 200240 P.R. China
| | - Zheng-Hong Luo
- Dept. of Chemical Engineering; School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University; Shanghai 200240 P.R. China
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24
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Affiliation(s)
- Chao Bian
- Department of Chemical Engineering,
School of Chemistry and Chemical Engineering, State Key Laboratory
of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Yin-Ning Zhou
- Department of Chemical Engineering,
School of Chemistry and Chemical Engineering, State Key Laboratory
of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Jun-Kang Guo
- Department of Chemical Engineering,
School of Chemistry and Chemical Engineering, State Key Laboratory
of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Zheng-Hong Luo
- Department of Chemical Engineering,
School of Chemistry and Chemical Engineering, State Key Laboratory
of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
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25
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Abstract
Photoinduced atom transfer radical polymerization with an Fe catalyst was successfully performed in aqueous media for the first time.
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Affiliation(s)
- Chao Bian
- Department of Chemical Engineering
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Metal Matrix Composites
- Shanghai Jiao Tong University
- Shanghai 200240
| | - Yin-Ning Zhou
- Department of Chemical Engineering
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Metal Matrix Composites
- Shanghai Jiao Tong University
- Shanghai 200240
| | - Jun-Kang Guo
- Department of Chemical Engineering
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Metal Matrix Composites
- Shanghai Jiao Tong University
- Shanghai 200240
| | - Zheng-Hong Luo
- Department of Chemical Engineering
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Metal Matrix Composites
- Shanghai Jiao Tong University
- Shanghai 200240
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26
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Li JJ, Zhou YN, Jiang ZD, Luo ZH. Electrospun Fibrous Mat with pH-Switchable Superwettability That Can Separate Layered Oil/Water Mixtures. Langmuir 2016; 32:13358-13366. [PMID: 27993022 DOI: 10.1021/acs.langmuir.6b03627] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Oil/water separation has inspired much research interest because of the damages caused to our natural environment due to oily wastewater. As a leader of advanced separation materials, electrospun polymeric fibrous mats having the properties of special surface wettability, high specific surface area, and high porosity will be a good membrane material for the separation of oily wastewater. Herein, we first prepared pH-responsive polymer poly(dimethylsiloxane)-block-poly(4-vinylpyridine) (PDMS-b-P4VP) mat using electrospinning technology. The PDMS-b-P4VP fibrous mat with a thickness of around 250 μm exhibits good pH-switchable oil/water wettability and is able to effectively separate oil or water from layered oil/water mixtures by gravity driven through adjusting the pH value. Stemming from its porous structure and pH-switchable superwettability, the electrospun PDMS-b-P4VP fibrous mat achieved controllable separations with high fluxes of approximately 9000 L h-1 m-2 for oil (hexane) and 27 000 L h-1 m-2 for water. In addition, extended studies on the polymer/silica nanoparticulate (silica NP) composite fibrous mats show that the addition of an inorganic component improves the thermal stability, pH-switchable wettability, and separation performance of the fibrous mats (approximately 9000 L h-1 m-2 for hexane and 32 000 L h-1 m-2 for water). It can be concluded from the results that both polymer fibrous mats and silica-filled composite fibrous mats are good candidates for on-demand layered oil/water mixture separation.
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Affiliation(s)
- Jin-Jin Li
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University , Shanghai 200240, P. R. China
| | - Yin-Ning Zhou
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University , Shanghai 200240, P. R. China
| | - Zhi-Dong Jiang
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University , Shanghai 200240, P. R. China
| | - Zheng-Hong Luo
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University , Shanghai 200240, P. R. China
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27
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Shi P, Chen J, Gao L, Liu Y, Liu H, Zhou YN, Zhuang G. Far-forward collective scattering measurements by FIR polarimeter-interferometer on J-TEXT tokamak. Rev Sci Instrum 2016; 87:11E110. [PMID: 27910372 DOI: 10.1063/1.4960067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The multi-channel three-wave polarimeter-interferometer system on J-TEXT tokamak has been exploited to measure far-forward collective scattering from electron density fluctuations. The diagnostic utilizes far infrared lasers operated at 432 μm with 17-channel vertical chords (3 cm chord spacing), covering the entire cross section of plasma. Scattering laser power is measured using a high-sensitivity Schottky planar diode mixer which can also detect polarimetric and interferometric phase simultaneously. The system provides a line-integrated measurement of density fluctuations with maximum measurable wave number: k⊥max ≤ 2 cm-1 and time response up to 350 kHz. Feasibility of the diagnostic has been tested, showing higher sensitivity to detect fluctuation than interferometric measurement. Capability of providing spatial-resolved information of fluctuation has also been demonstrated in preliminary experimental applications.
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Affiliation(s)
- P Shi
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - J Chen
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - L Gao
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Y Liu
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - H Liu
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Y N Zhou
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - G Zhuang
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
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28
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Chen ZC, Zhu BC, Li JJ, Zhou YN, Luo ZH. Dual-responsive copolymer poly(2,2,3,4,4,4-hexafluorobutyl methacrylate)-block-poly[2-(dimethylamino)ethyl methacrylate] synthesized via photoATRP for surface with tunable wettability. ACTA ACUST UNITED AC 2016. [DOI: 10.1002/pola.28357] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Zhi-Chao Chen
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering; Shanghai Jiao Tong University; Shanghai 200240 People's Republic of China
| | - Bo-Chao Zhu
- Lanzhou Petrochemical Research Center; PetroChina Petrochemical Research Institute; Lanzhou 730060 People's Republic of China
| | - Jin-Jin Li
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering; Shanghai Jiao Tong University; Shanghai 200240 People's Republic of China
| | - Yin-Ning Zhou
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering; Shanghai Jiao Tong University; Shanghai 200240 People's Republic of China
| | - Zheng-Hong Luo
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering; Shanghai Jiao Tong University; Shanghai 200240 People's Republic of China
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29
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Zhou YN, Guo JK, Li JJ, Luo ZH. Photoinduced Iron(III)-Mediated Atom Transfer Radical Polymerization with In Situ Generated Initiator: Mechanism and Kinetics Studies. Ind Eng Chem Res 2016. [DOI: 10.1021/acs.iecr.6b02846] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yin-Ning Zhou
- Department of
Chemical Engineering, School
of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Jun-Kang Guo
- Department of
Chemical Engineering, School
of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Jin-Jin Li
- Department of
Chemical Engineering, School
of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Zheng-Hong Luo
- Department of
Chemical Engineering, School
of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
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30
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Guo JK, Zhou YN, Luo ZH. Kinetic Insights into the Iron-Based Electrochemically Mediated Atom Transfer Radical Polymerization of Methyl Methacrylate. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b01022] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Jun-Kang Guo
- Department of Chemical Engineering,
School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Yin-Ning Zhou
- Department of Chemical Engineering,
School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Zheng-Hong Luo
- Department of Chemical Engineering,
School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
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31
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Zhou YN, Luo ZH. State-of-the-Art and Progress in Method of Moments for the Model-Based Reversible-Deactivation Radical Polymerization. MACROMOL REACT ENG 2016. [DOI: 10.1002/mren.201500080] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Yin-Ning Zhou
- Department of Chemical Engineering; School of Chemistry and Chemical Engineering; Shanghai Jiao Tong University; Shanghai 200240 P. R. China
| | - Zheng-Hong Luo
- Department of Chemical Engineering; School of Chemistry and Chemical Engineering; Shanghai Jiao Tong University; Shanghai 200240 P. R. China
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32
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Zhou YN, Li JJ, Luo ZH. Toward efficient water/oil separation material: Effect of copolymer composition on pH-responsive wettability and separation performance. AIChE J 2016. [DOI: 10.1002/aic.15145] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Yin-Ning Zhou
- Dept. of Chemical Engineering, School of Chemistry and Chemical Engineering; Shanghai Jiao Tong University; Shanghai 200240 P.R. China
| | - Jin-Jin Li
- Dept. of Chemical Engineering, School of Chemistry and Chemical Engineering; Shanghai Jiao Tong University; Shanghai 200240 P.R. China
| | - Zheng-Hong Luo
- Dept. of Chemical Engineering, School of Chemistry and Chemical Engineering; Shanghai Jiao Tong University; Shanghai 200240 P.R. China
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33
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Affiliation(s)
- Yin-Ning Zhou
- Department of Chemical Engineering,
School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Jin-Jin Li
- Department of Chemical Engineering,
School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Zheng-Hong Luo
- Department of Chemical Engineering,
School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
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34
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Abstract
Wastewater contaminated with oil or organic compounds poses threats to the environment and humans. Efficient separation of oil and water are highly desired yet still challenging. This paper reports the fabrication of a smart fiber membrane by depositing pH-responsive copolymer fibers on a stainless steel mesh through electrospinning. The cost-effective precursor material poly(methyl methacrylate)-block-poly(4-vinylpyridine) (PMMA-b-P4VP) was synthesized using copper(0)-mediated reversible-deactivation radical polymerization. The pH-responsive P4VP and the underwater oleophilic/hydrophilic PMMA confer the as-prepared membrane with switchable surface wettability toward water and oil. The three-dimensional network structure of the fibers considerably strengthens the oil/water wetting property of the membrane, which is highly desirable in the separation of oil and water mixtures. The as-prepared fiber membrane accomplishes gravity-driven pH-controllable oil/water separations. Oil selectively passes through the membrane, whereas water remains at the initial state; after the membrane is wetted with acidic water (pH 3), a reverse separation is realized. Both separations are highly efficient, and the membrane also exhibits switchable wettability after numerous cycles of the separation process. This cost-effective and easily mass-produced smart fiber membrane with excellent oil-fouling repellency has significant potential in practical applications, such as water purification and oil recovery.
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Affiliation(s)
- Jin-Jin Li
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University , Shanghai 200240, P. R. China
| | - Yin-Ning Zhou
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University , Shanghai 200240, P. R. China
| | - Zheng-Hong Luo
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University , Shanghai 200240, P. R. China
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35
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Affiliation(s)
- Jun-Kang Guo
- Dept. of Chemical Engineering, School of Chemistry and Chemical Engineering; Shanghai Jiao Tong University; Shanghai 200240 P.R. China
| | - Yin-Ning Zhou
- Dept. of Chemical Engineering, School of Chemistry and Chemical Engineering; Shanghai Jiao Tong University; Shanghai 200240 P.R. China
| | - Zheng-Hong Luo
- Dept. of Chemical Engineering, School of Chemistry and Chemical Engineering; Shanghai Jiao Tong University; Shanghai 200240 P.R. China
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36
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Affiliation(s)
- Yin-Ning Zhou
- Dept. of Chemical Engineering; School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University; Shanghai 200240 P.R. China
| | - Zheng-Hong Luo
- Dept. of Chemical Engineering; School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University; Shanghai 200240 P.R. China
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37
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Wang W, Zhou YN, Luo ZH. Modeling of the ATRcoP Processes of Methyl Methacrylate and 2-(Trimethylsilyl) Ethyl Methacrylate in Continuous Reactors: From CSTR to PFR. MACROMOL REACT ENG 2015. [DOI: 10.1002/mren.201400056] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Wei Wang
- Department of Chemical Engineering; School of Chemistry and Chemical Engineering; Shanghai Jiao Tong University; Shanghai 200240, P. R. China
| | - Yin-Ning Zhou
- Department of Chemical Engineering; School of Chemistry and Chemical Engineering; Shanghai Jiao Tong University; Shanghai 200240, P. R. China
| | - Zheng-Hong Luo
- Department of Chemical Engineering; School of Chemistry and Chemical Engineering; Shanghai Jiao Tong University; Shanghai 200240, P. R. China
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38
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39
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Affiliation(s)
- Jin-Jin Li
- Department of
Chemical Engineering, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Yin-Ning Zhou
- Department of
Chemical Engineering, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Zheng-Hong Luo
- Department of
Chemical Engineering, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
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40
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Zhou YN, Chen ZC, Wei C, Luo ZH. A Tandem Controlled Radical Polymerization Technique for the Synthesis of Poly(4-vinylpyridine) Block Copolymers: Successive ATRP, SET-NRC, and NMP. MACROMOL CHEM PHYS 2014. [DOI: 10.1002/macp.201400483] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Yin-Ning Zhou
- Department of Chemical Engineering; School of Chemistry and Chemical Engineering; Shanghai Jiao Tong University; Shanghai 200240 PR China
| | - Zhi-Chao Chen
- Department of Chemical Engineering; School of Chemistry and Chemical Engineering; Shanghai Jiao Tong University; Shanghai 200240 PR China
| | - Chuan Wei
- Skshu Paint Co., Ltd.; 518 North Liyuan Avenue, Licheng District Putian Fujian 351100 PR China
| | - Zheng-Hong Luo
- Department of Chemical Engineering; School of Chemistry and Chemical Engineering; Shanghai Jiao Tong University; Shanghai 200240 PR China
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41
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Chen J, Zhuang G, Li Q, Liu Y, Gao L, Zhou YN, Jian X, Xiong CY, Wang ZJ, Brower DL, Ding WX. High resolution polarimeter-interferometer system for fast equilibrium dynamics and MHD instability studies on Joint-TEXT tokamak (invited). Rev Sci Instrum 2014; 85:11D303. [PMID: 25430163 DOI: 10.1063/1.4891603] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A high-performance Faraday-effect polarimeter-interferometer system has been developed for the J-TEXT tokamak. This system has time response up to 1 μs, phase resolution < 0.1° and minimum spatial resolution ∼15 mm. High resolution permits investigation of fast equilibrium dynamics as well as magnetic and density perturbations associated with intrinsic Magneto-Hydro-Dynamic (MHD) instabilities and external coil-induced Resonant Magnetic Perturbations (RMP). The 3-wave technique, in which the line-integrated Faraday angle and electron density are measured simultaneously by three laser beams with specific polarizations and frequency offsets, is used. In order to achieve optimum resolution, three frequency-stabilized HCOOH lasers (694 GHz, >35 mW per cavity) and sensitive Planar Schottky Diode mixers are used, providing stable intermediate-frequency signals (0.5-3 MHz) with S/N > 50. The collinear R- and L-wave probe beams, which propagate through the plasma poloidal cross section (a = 0.25-0.27 m) vertically, are expanded using parabolic mirrors to cover the entire plasma column. Sources of systematic errors, e.g., stemming from mechanical vibration, beam non-collinearity, and beam polarization distortion are individually examined and minimized to ensure measurement accuracy. Simultaneous density and Faraday measurements have been successfully achieved for 14 chords. Based on measurements, temporal evolution of safety factor profile, current density profile, and electron density profile are resolved. Core magnetic and density perturbations associated with MHD tearing instabilities are clearly detected. Effects of non-axisymmetric 3D RMP in ohmically heated plasmas are directly observed by polarimetry for the first time.
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Affiliation(s)
- J Chen
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - G Zhuang
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Q Li
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Y Liu
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - L Gao
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Y N Zhou
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - X Jian
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - C Y Xiong
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Z J Wang
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - D L Brower
- Department of Physics and Astronomy, University of California Los Angeles, Los Angeles, California 90095, USA
| | - W X Ding
- Department of Physics and Astronomy, University of California Los Angeles, Los Angeles, California 90095, USA
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42
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Zhou YN, Li JJ, Zhang Q, Luo ZH. Light-responsive smart surface with controllable wettability and excellent stability. Langmuir 2014; 30:12236-12242. [PMID: 25262829 DOI: 10.1021/la501907w] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Novel fluorinated gradient copolymer was designed for smart surface with light-responsive controllable wettability and excellent stability. The switchable mechanism and physicochemical characteristics of the as-prepared surface decorated by designed polymeric material were investigated by ultraviolet-visible (UV-vis) spectrum, scanning electron microscope (SEM), atomic force microscope (AFM), and X-ray photoelectron spectroscopy (XPS). Thanks to the functional film and surface roughening, etched silicon surface fabricated by copolymer involving spiropyran (Sp) moieties possesses a fairly large variation range of WCA (28.1°) and achieves the transformation between hydrophilicity (95.2° < 109.2°) and hydrophobicity (123.3° > 109.2°) relative to blank sample (109.2°). The synthetic strategy and developed smart surface offer a promising application in coating with controllable wettability, which bridge the gap between chemical structure and material properties.
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Affiliation(s)
- Yin-Ning Zhou
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University , Shanghai 200240, People's Republic of China
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43
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Affiliation(s)
- Yin-Ning Zhou
- Dept. of Chemical Engineering, School of Chemistry and Chemical Engineering; Shanghai Jiao Tong University; Shanghai 200240 P.R. China
| | - Jin-Jin Li
- Dept. of Chemical Engineering, School of Chemistry and Chemical Engineering; Shanghai Jiao Tong University; Shanghai 200240 P.R. China
| | - Qing Zhang
- Dept. of Chemical Engineering, School of Chemistry and Chemical Engineering; Shanghai Jiao Tong University; Shanghai 200240 P.R. China
| | - Zheng-Hong Luo
- Dept. of Chemical Engineering, School of Chemistry and Chemical Engineering; Shanghai Jiao Tong University; Shanghai 200240 P.R. China
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44
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Affiliation(s)
- Yin-Ning Zhou
- Department
of Chemical Engineering,
School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Zheng-Hong Luo
- Department
of Chemical Engineering,
School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
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45
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Wang W, Zhou YN, Luo ZH. Modeling of the Atom Transfer Radical Copolymerization Processes of Methyl Methacrylate and 2-(Trimethylsilyl) Ethyl Methacrylate under Batch, Semibatch, and Continuous Feeding: A Chemical Reactor Engineering Viewpoint. Ind Eng Chem Res 2014. [DOI: 10.1021/ie501467g] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Wei Wang
- Department
of Chemical Engineering, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Yin-Ning Zhou
- Department
of Chemical Engineering, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Zheng-Hong Luo
- Department
of Chemical Engineering, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
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46
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Wang W, Zhou YN, Shi L, Luo ZH. Kinetic modeling of atom transfer radical copolymerization of methyl methacrylate and 2-(trimethylsilyl) ethyl methacrylate in a train of continuous stirred-tank reactors. POLYM ENG SCI 2014. [DOI: 10.1002/pen.23972] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Wei Wang
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering; Shanghai Jiao Tong University; Shanghai 200240 People's Republic of China
| | - Yin-Ning Zhou
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering; Shanghai Jiao Tong University; Shanghai 200240 People's Republic of China
| | - Lan Shi
- Research Institute of Petroleum and Chemical Industry; , China National Petroleum Corporation (CNPC); Beijing 100195 People's Republic of China
| | - Zheng-Hong Luo
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering; Shanghai Jiao Tong University; Shanghai 200240 People's Republic of China
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47
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Zhou YN, Luo ZH. Insight into the ATRP rate controlling ability of initiator structure: Micromolecular, macromolecular, and immobilized initiators. ACTA ACUST UNITED AC 2014. [DOI: 10.1002/pola.27249] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Yin-Ning Zhou
- Department of Chemical Engineering; School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University; Shanghai 200240 People's Republic of China
| | - Zheng-Hong Luo
- Department of Chemical Engineering; School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University; Shanghai 200240 People's Republic of China
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48
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Zhou YN, Zhang Q, Luo ZH. A light and pH dual-stimuli-responsive block copolymer synthesized by copper(0)-mediated living radical polymerization: solvatochromic, isomerization, and "schizophrenic" behaviors. Langmuir 2014; 30:1489-1499. [PMID: 24472031 DOI: 10.1021/la402948s] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A "schizophrenic" block copolymer (poly[1'-(2-methacryloxyethyl)-3',3'-dimethyl-6-nitrospiro-(2H-1-benzopyran-2,2'-indoline)]-b-poly(acrylic acid) (PSPMA-b-PAA)) was synthesized by sequential copper(0)-mediated living radical polymerization (Cu(0)-mediated LRP) at 30 °C in an oxygen-tolerant system followed by hydrolysis of the resulting polymer. The solvatechromic behaviors of the PSPMA10-b-poly(t-butyl acrylate)40 (PSPMA10-b-PtBA40) and PSPMA10-b-PAA40 block copolymers in organic solvents were investigated by UV-vis spectroscopy. The PSPMA10-b-PtBA40 stabilizes the nonpolar photoisomer and is not sensitive to the polarity of the solvent, while the PSPMA10-b-PAA40 stabilizes the planar zwitterionic form without irradiation. Furthermore, light-induced isomerization of spiropyran (Sp) moieties from Sp to merocyanine (Mc) was demonstrated. Finally, the "schizophrenic" micellization behavior of as-prepared copolymer in aqueous solution regulated by light and pH stimuli was vividly demonstrated, and the reversibility of micellization processes performed in this study was also examined. The large compound micelles can bring out a gradually extended and even transformed conformation with increasing deprotonation degree at pH > pKa.
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Affiliation(s)
- Yin-Ning Zhou
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University , Shanghai 200240, P. R. China
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49
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Li JJ, Wang JJ, Zhou YN, Luo ZH. Synthesis and characterization of polyfluorene-based photoelectric materials: the effect of coil segment on the spectral stability. RSC Adv 2014. [DOI: 10.1039/c4ra01616e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The spectral stability of polyfluorene-based copolymers could be improved through incorporating an appropriate coil segment.
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Affiliation(s)
- Jin-Jin Li
- Department of Chemical Engineering
- School of Chemistry and Chemical Engineering
- Shanghai Jiao Tong University
- Shanghai 200240, P.R. China
| | - Jian-Jian Wang
- Department of Chemical and Biochemical Engineering
- College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen 361005, P.R. China
| | - Yin-Ning Zhou
- Department of Chemical Engineering
- School of Chemistry and Chemical Engineering
- Shanghai Jiao Tong University
- Shanghai 200240, P.R. China
| | - Zheng-Hong Luo
- Department of Chemical Engineering
- School of Chemistry and Chemical Engineering
- Shanghai Jiao Tong University
- Shanghai 200240, P.R. China
- Department of Chemical and Biochemical Engineering
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50
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Wang P, Zhou YN, Luo JS, Luo ZH. Poly(ionic liquid)s-based nanocomposite polyelectrolytes with tunable ionic conductivity prepared via SI-ATRP. Polym Chem 2014. [DOI: 10.1039/c3py01025b] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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