4.6 Article

Enhanced Photosensitive Schottky Diode Behavior of Pyrazine over 2-Aminopyrimidine Ligand in Copper(II)-Phthalate MOFs: Experimental and Theoretical Rationalization

Journal

ACS OMEGA
Volume 3, Issue 8, Pages 9160-9171

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/acsomega.8b01111

Keywords

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Funding

  1. University Grants Commission (New Delhi)
  2. University Grants Commission, New Delhi
  3. SERB-DST [SB/OS/PDF-524/2015-16]
  4. Gobierno de Espana MINECO [CTQ2014-56295-R, CTQ2017-84319-P]
  5. Severo Ochoa Excellence Accreditation [2014-2018 SEV-2013-0319]
  6. FEDER funds
  7. Generalitat de Catalunya/CERCA Program
  8. AGAUR [2017 SGR 1123]
  9. MINECO/AEI of Spain [CTQ2014-57393-C2-1-P, CTQ2017-85821-R]

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Two novel Cu(II)-based metal-organic frameworks [C40H34Cu2N6O18 (1) and C20H18CuN2O10 (2)] have been synthesized using 2-ammopyrimidine or pyrazine ligands and phthalate ion and characterized spectroscopically and by X-ray single-crystal diffraction. Both 1 and 2 show electrical conductivity and photosensitivity, evidencing their potentiality in optoelectronic device applications. Experimental and theoretical investigations revealed that the electrical conductivity under irradiation of visible light increases compared to that under dark condition (photosensitive Schottky barrier diode behavior), especially in complex 2. Both 1 and 2 have been successfully applied in technologically challenging thin-film active devices.

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