Alkyl Alcohol Chain-length Mediated Steric Hindrance at Support Surface in Heterogeneous <italic style="font-style: italic">α</italic>-Diimine Ni Catalysts for Modulating Ethylene Polymerization

Fan Yu; Bin Dai; Ning Liu; Bin-Yuan Liu; Chen Zou

doi:10.1007/s10118-025-3501-9

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Alkyl Alcohol Chain-length Mediated Steric Hindrance at Support Surface in Heterogeneous α-Diimine Ni Catalysts for Modulating Ethylene Polymerization

RESEARCH ARTICLE | Updated：2026-01-30

- Alkyl Alcohol Chain-length Mediated Steric Hindrance at Support Surface in Heterogeneous α-Diimine Ni Catalysts for Modulating Ethylene Polymerization
- Chinese Journal of Polymer Science Vol. 44, Issue 2, Pages: 331-340(2026)
- Affiliations：
  
  a.School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Shihezi University, Shihezi 832003, China
  b.State Key Laboratory of Precision and Intelligent Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China
  c.Hebei Key Laboratory of Functional Polymer, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300401, China
- Author bio：
  
  byliu@hebut.edu.cn (B.Y.L.)
  chen1215@ustc.edu.cn (C.Z.)
- Funds：
- DOI：10.1007/s10118-025-3501-9
  CLC：
- Received：11 October 2025，
  
  Accepted：13 November 2025，
  
  Online First：16 January 2026，
  
  Published：05 February 2026
- Accepted：
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Yu, F.; Dai, B.; Liu, N.; Liu, B. Y.; Zou, C. Alkyl alcohol chain-length mediated steric hindrance at support surface in heterogeneous α-diimine Ni catalysts for modulating ethylene polymerization. Chinese J. Polym. Sci. 2026, 44, 331–340

Fan Yu, Bin Dai, Ning Liu, et al. Alkyl Alcohol Chain-length Mediated Steric Hindrance at Support Surface in Heterogeneous α-Diimine Ni Catalysts for Modulating Ethylene Polymerization[J]. Chinese Journal of Polymer Science, 2026, 44(2): 331-340. DOI: 10.1007/s10118-025-3501-9.
Yu, F.; Dai, B.; Liu, N.; Liu, B. Y.; Zou, C. Alkyl alcohol chain-length mediated steric hindrance at support surface in heterogeneous α-diimine Ni catalysts for modulating ethylene polymerization. Chinese J. Polym. Sci. 2026, 44, 331–340 DOI： 10.1007/s10118-025-3501-9.

Fan Yu, Bin Dai, Ning Liu, et al. Alkyl Alcohol Chain-length Mediated Steric Hindrance at Support Surface in Heterogeneous α-Diimine Ni Catalysts for Modulating Ethylene Polymerization[J]. Chinese Journal of Polymer Science, 2026, 44(2): 331-340. DOI: 10.1007/s10118-025-3501-9. DOI：

摘要

This work investigates supported

-diimine nickel catalysts for ethylene polymerization. By tuning the length of alkyl alcohol chains attached to the ligand

the distance between the nickel center and the MgCl

support surface is controlled. This modulation effectively regulates support-induced steric hindrance

influencing catalyst behavior.

Abstract

Heterogeneous polymerization represents a widely employed method in the polyolefin industry. In recent years

various heterogenization strategies for late transition metal catalysts have been developed

enabling effective control of polymer morphology and optimization of catalytic performance.

However

while most studies have focused on designing anchoring groups and advancing support approaches

systematic investigations into how the support influences the catalytic behavior of the late transition metal catalysts. In this work

we fabricated supported

-diimine nickel catalysts by functionalizing the ligand with alkyl alcohol chains of varying lengths and supporting them onto MgCl

supports. The ethylene polymerization behavior of these catalysts was then investigated. By precisely adjusting the alkyl alcohol chain length

the distance between the catalytically active metal center and the support surface was modulated. This approach demonstrates that support-induced steric hindrance effect can be effectively regulated by controlling the separation distance between the metal center and the support surface.

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Alkyl Alcohol Chain-length Mediated Steric Hindrance at Support Surface in Heterogeneous α-Diimine Ni Catalysts for Modulating Ethylene Polymerization

DOI：10.1007/s10118-025-3501-9

摘要

Abstract

关键词

Keywords

references