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Multistimuli-responsive multicolor solid-state luminescence tuned by NH-dependent switchable hydrogen bonds.

Rui Zhang1, Li-Hua He1, Sui-Jun Liu1

  • 1Jiangxi Provincial Key Laboratory of Functional Molecular Materials Chemistry, School of Chemistry and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, P.R. China. gzchenjinglin@126.com.

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This study reveals the mechanism behind multicolor luminescence in a new dicopper(I) complex. The material

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Area of Science:

  • Materials Science
  • Photochemistry
  • Coordination Chemistry

Background:

  • Stimuli-responsive luminescent materials are crucial for advanced applications.
  • Understanding their response mechanisms is key for rational design.
  • Multicolor luminescence offers enhanced functionality.

Purpose of the Study:

  • To investigate the multistimuli-responsive multicolor solid-state luminescence of a novel dicopper(I) complex.
  • To elucidate the underlying mechanisms of mechanochromism and vapochromism.
  • To provide insights for designing new stimuli-responsive luminescent materials.

Main Methods:

  • Synthesis and characterization of a dicopper(I) complex and its solvated forms.
  • Investigation of solid-state luminescence properties under different stimuli (grinding, heating, solvent vapor).
  • Analysis of structural changes and hydrogen bonding interactions using spectroscopic and crystallographic methods.

Main Results:

  • The dicopper(I) complex exhibits multistimuli-responsive multicolor luminescence.
  • Mechanochromism is linked to the disruption of hydrogen bonds between bmptzH-NH and perchlorate ions upon grinding.
  • Vapochromism results from the dynamic formation and breakage of hydrogen bonds involving dppa-NH and solvent molecules.

Conclusions:

  • The study clarifies the distinct mechanisms of mechanochromism and vapochromism in the dicopper(I) complex.
  • The findings highlight the role of switchable hydrogen bonds, particularly N-H groups, in controlling luminescence.
  • This work offers valuable guidance for the design of novel, tunable luminescent materials responsive to multiple stimuli.