Citation: Huan GAO, Guo Chang WANG, Bing Lin HE. Critical Transitions of Microviscosity in Concentrated Polystyrene Solutions Revealed by Excimer Formation of Pyrenyl Probes[J]. Chinese Chemical Letters, ;1997, 8(6): 543-546. shu

Critical Transitions of Microviscosity in Concentrated Polystyrene Solutions Revealed by Excimer Formation of Pyrenyl Probes

The State Key Laboratory of Functional Polymer Materials for Adsorption and Separation and Institute of Polymer Chemistry, Nankai University, Tianjin 300071

Received Date: 17 December 1996

Excimer formation of pyrene and benzyl 4-(1-pyrenyl) butanoate was used to study the microviscosity of polystyrene/toluene solutions over the entire concentration range.Two critical concentrations (C_PS~0.32,0.82g/ml) have been observed from the log-log plot of I_E/I_M vs C_PS.The results are explained in terms of the onset of cohesional interaction and the glass transition of the polymer chains,respectively.
1. [1]
  Dong Lv , Xuelei Liu , Wei Li , Qiang Zhang , Xinhong Yu , Yanchun Han . Single droplet formation by controlling the viscoelasticity of polymer solutions during inkjet printing. Chinese Chemical Letters, 2024, 35(6): 109401-. doi: 10.1016/j.cclet.2023.109401
2. [2]
  Xinwen Li , Lili Li , Junqiu Jiang , Wangyang Mei , Zhaoxia Wang , Qingwei Gao , Huimin Zhou , Liangliang Wei , Qingliang Zhao . Seeking breakthroughs in advanced oxidation processes for waste activated sludge dewatering: A critical review of developments, bibliometrics and sustainable solutions. Chinese Chemical Letters, 2025, 36(11): 110847-. doi: 10.1016/j.cclet.2025.110847
3. [3]
  Haoting Wang , Mengfan Luo , Yuzhong Wang , Jialong Yin , Heng Zhang , Jia Zhao , Bo Lai . Mn(Ⅱ) enhanced permanganate oxidation of trace organic pollutants in water: Critical role of in situ formation of colloidal MnO₂. Chinese Chemical Letters, 2025, 36(6): 110348-. doi: 10.1016/j.cclet.2024.110348
4. [4]
  Qiangwei Wang , Huijiao Liu , Mengjie Wang , Haojie Zhang , Jianda Xie , Xuanwei Hu , Shiming Zhou , Weitai Wu . Observation of high ionic conductivity of polyelectrolyte microgels in salt-free solutions. Chinese Chemical Letters, 2024, 35(4): 108743-. doi: 10.1016/j.cclet.2023.108743
5. [5]
  Chuan-Zhi Ni , Ruo-Ming Li , Fang-Qi Zhang , Qu-Ao-Wei Li , Yuan-Yuan Zhu , Jie Zeng , Shuang-Xi Gu . A chiral fluorescent probe for molecular recognition of basic amino acids in solutions and cells. Chinese Chemical Letters, 2024, 35(10): 109862-. doi: 10.1016/j.cclet.2024.109862
6. [6]
  Shifang Song , Chenyu Wu , Li Zhang , Dezhi Yang , Yang Lu , Zhengzheng Zhou . Unpacking phase transitions in multi-component drug systems: A case study. Chinese Chemical Letters, 2025, 36(7): 110911-. doi: 10.1016/j.cclet.2025.110911
7. [7]
  Chang LIU , Chao ZHANG , Tongbu LU . Small-size Au nanoparticles anchored on pyrenyl-graphdiyne for N₂ electroreduction. Chinese Journal of Inorganic Chemistry, 2025, 41(1): 174-182. doi: 10.11862/CJIC.20240305
8. [8]
  Long-Qi Yang , Xiao-Ming Jiang , Fa-Kun Zheng , Guo-Cong Guo . Unconventional configuration of excimer in luminescent aggregates uncovered by in situ photo-difference electron density. Chinese Journal of Structural Chemistry, 2026, 45(4): 100846-100846. doi: 10.1016/j.cjsc.2025.100846
9. [9]
  Xiangjun Zhang , Xiaodi Yang , Yan Wang , Zhongping Xu , Sisi Yi , Tao Guo , Yue Liao , Xiyu Tang , Jianxiang Zhang , Ruibing Wang . A supramolecular nanoprodrug for prevention of gallstone formation. Chinese Chemical Letters, 2025, 36(2): 109854-. doi: 10.1016/j.cclet.2024.109854
10. [10]
  Jian-Rong Li , Jieying Hu , Lai-Hon Chung , Jilong Zhou , Parijat Borah , Zhiqing Lin , Yuan-Hui Zhong , Hua-Qun Zhou , Xianghua Yang , Zhengtao Xu , Jun He . Insight into stable, concentrated radicals from sulfur-functionalized alkyne-rich crystalline frameworks and application in solar-to-vapor conversion. Chinese Journal of Structural Chemistry, 2024, 43(8): 100380-100380. doi: 10.1016/j.cjsc.2024.100380
11. [11]
  Kun Song , Lijia Zhang , Yunhui Meng , Jiantong Ding , Xiaobai Li , Yongpeng Liu , Hongwei Ma . Recent development in fluorescent probes for monitoring organophosphorus pollutants. Chinese Chemical Letters, 2026, 37(5): 111902-. doi: 10.1016/j.cclet.2025.111902
12. [12]
  Chong Liu , Nanthi Bolan , Anushka Upamali Rajapaksha , Hailong Wang , Paramasivan Balasubramanian , Pengyan Zhang , Xuan Cuong Nguyen , Fayong Li . Critical review of biochar for the removal of emerging inorganic pollutants from wastewater. Chinese Chemical Letters, 2025, 36(2): 109960-. doi: 10.1016/j.cclet.2024.109960
13. [13]
  Weiyan Hou , Zonglin Yi , Hongtao Yu , Wanru Jia , Liqin Dai , Junjie Yang , Jingpeng Chen , Lijing Xie , Fangyuan Su , Cheng-Meng Chen . Fractal dimension revealed from SAXS as a descriptor of structural disorder in hard carbon anodes of sodium ion battery. Chinese Chemical Letters, 2026, 37(7): 111124-. doi: 10.1016/j.cclet.2025.111124
14. [14]
  Shengyu Zhao , Qinhao Shi , Wuliang Feng , Yang Liu , Xinxin Yang , Xingli Zou , Xionggang Lu , Yufeng Zhao . Suppression of multistep phase transitions of O3-type cathode for sodium-ion batteries. Chinese Chemical Letters, 2024, 35(5): 108606-. doi: 10.1016/j.cclet.2023.108606
15. [15]
  Jinhui Xu , Yanting Zhang , Kecheng Wen , Xinyu Wang , Zhiwei Yang , Yuan Huang , Guozhong Zheng , Lupeng Huang , Jing Zhang . Enhanced removal of polystyrene nanoplastics by air flotation modified by dodecyltrimethylammonium chloride: Performance and mechanism. Chinese Chemical Letters, 2025, 36(5): 110240-. doi: 10.1016/j.cclet.2024.110240
16. [16]
  Chengyao Zhao , Jingyuan Liao , Yuxiang Zhu , Yiying Zhang , Lianjie Zhai , Junrong Huang , Hengzhi You . Polystyrene-supported phosphoric-acid catalyzed atroposelective construction of axially chiral N-aryl benzimidazoles. Chinese Chemical Letters, 2025, 36(6): 110337-. doi: 10.1016/j.cclet.2024.110337
17. [17]
  Xiao Yang , Wenjing Liu , Jiarui Kong , Xiangcheng Shan , Qiupei Lei , Zhipeng Yin , Runzeng Liu , Min Zhang , Qingzhe Zhang , Yongguang Yin , Chuanyong Jing , Yong Cai . Synthesis of amine-functionalized polystyrene resin-based globular adsorbents for efficient and selective removal of As and Sb species. Chinese Chemical Letters, 2025, 36(11): 110856-. doi: 10.1016/j.cclet.2025.110856
18. [18]
  Chao Jia , Min Ren , Yingdi Jin , Xingxing Li . Hydrogen migration induced magnetic phase transitions in two-dimensional Fe-porphyrinoid metal-organic frameworks. Chinese Journal of Structural Chemistry, 2026, 45(2): 100801-100801. doi: 10.1016/j.cjsc.2025.100801
19. [19]
  Tian Feng , Shu-Yi Gu , Lu-Fei Shi , Yao-Hua Gu , Bi-Feng Yuan . Mass spectrometry analysis reveals changes in patterns and correlations of nucleic acid epigenetic modifications in mouse tissues exposed to polystyrene microplastics. Chinese Chemical Letters, 2026, 37(3): 111546-. doi: 10.1016/j.cclet.2025.111546
20. [20]
  Zijian Zhang , Fangxin Du , Lijia Liu , Yixiang Sun , Jie Xue , Hanshen Xin . 1-Azaazulene constructs: Overcoming the weak fluorescence of azulene derivatives via S₁-S₀ transitions. Chinese Chemical Letters, 2026, 37(6): 111987-. doi: 10.1016/j.cclet.2025.111987

Get Citation

PDF

XML

Metrics

PDF Downloads(0)
Abstract views(1483)
HTML views(59)

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