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Peer-reviewedCC BY-NC-ND 4.0ACS Omega

High-Pressure Carbon Dioxide Adsorption and Dynamic Breathing Behavior in a Flexible Zn2L2 Metallosupramolecular Mesocate

  • Chana Panyanon1
  • Raúl Díaz-Torres1
  • Pacharapon Jearanaiwiwat1
  • Sarute Ummartyotin1,2
  • Bunyarat Rungtaweevoranit3
  • Mongkol Sukwattanasinitt2
  • Kittipong Chainok1,2
  1. 1Thammasat University , , ,
  2. 2Chulalongkorn University , , ,
  3. 3National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA) , ,
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Abstract

A discrete M2L2 metallosupramolecular complex containing bis-bidentate pyridylimine Schiff base ligand (L), [Zn2(NCSe)4(L)2]·5MeOH (1), has been synthesized and characterized. The solid-state structure of 1 reveals a neutral double-strand dinuclear mesocate architecture, comprising two Zn(II) atoms in octahedral geometry that coordinate with two chelating ligands L positioned in a side-by-side arrangement. Complex 1 demonstrates stability in water and a variety of common organic solvents, maintaining a pH range from 3 to 13, and can endure temperatures up to 240 °C. The thermally activated 1 has been examined for CO2 adsorption at pressures up to 20 bar and temperatures ranging from 0 to 55 °C, showing notable CO2 adsorption characteristics affected by temperature-dependent sorption hysteresis. The binding mechanism of the CO2-mesocate complex 1 was examined via in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) at pressures up to 20 bar and a temperature of 35 °C. Notably, Hirshfeld surface analysis is employed to visualize and quantify intermolecular interactions, aiding in the identification and examination of active sites for the CO2 molecule. This study demonstrates the effectiveness of a supramolecular CO2 adsorption approach, utilizing flexible and low-symmetry mesocate components. The development of advanced carbon capture materials for both low- and high-pressure applications may benefit from this potentially promising approach.

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Cite

BibTeXRIS
BibTeX
@article{panyanon2026highpressure,
  title = {{High-Pressure Carbon Dioxide Adsorption and Dynamic Breathing Behavior in a Flexible Zn2L2 Metallosupramolecular Mesocate}},
  author = {Chana Panyanon and Raúl Díaz-Torres and Pacharapon Jearanaiwiwat and Sarute Ummartyotin and Bunyarat Rungtaweevoranit and Mongkol Sukwattanasinitt and Kittipong Chainok},
  journal = {ACS Omega},
  year = {2026},
  month = oct,
  doi = {10.1021/acsomega.6c06131},
  url = {https://pubs.acs.org/acsodf/article/11/42/64965/5451587/High-Pressure-Carbon-Dioxide-Adsorption-and},
  note = {CC BY-NC-ND 4.0},
}
RIS
TY  - JOUR
TI  - High-Pressure Carbon Dioxide Adsorption and Dynamic Breathing Behavior in a Flexible Zn2L2 Metallosupramolecular Mesocate
AU  - Chana Panyanon
AU  - Raúl Díaz-Torres
AU  - Pacharapon Jearanaiwiwat
AU  - Sarute Ummartyotin
AU  - Bunyarat Rungtaweevoranit
AU  - Mongkol Sukwattanasinitt
AU  - Kittipong Chainok
PY  - 2026
DA  - 2026/10/14
JO  - ACS Omega
DO  - 10.1021/acsomega.6c06131
UR  - https://pubs.acs.org/acsodf/article/11/42/64965/5451587/High-Pressure-Carbon-Dioxide-Adsorption-and
AB  - A discrete M2L2 metallosupramolecular complex containing bis-bidentate pyridylimine Schiff base ligand (L), [Zn2(NCSe)4(L)2]·5MeOH (1), has been synthesized and characterized. The solid-state structure of 1 reveals a neutral double-strand dinuclear mesocate architecture, comprising two Zn(II) atoms in octahedral geometry that coordinate with two chelating ligands L positioned in a side-by-side arrangement. Complex 1 demonstrates stability in water and a variety of common organic solvents, maintaining a pH range from 3 to 13, and can endure temperatures up to 240 °C. The thermally activated 1 has been examined for CO2 adsorption at pressures up to 20 bar and temperatures ranging from 0 to 55 °C, showing notable CO2 adsorption characteristics affected by temperature-dependent sorption hysteresis. The binding mechanism of the CO2-mesocate complex 1 was examined via in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) at pressures up to 20 bar and a temperature of 35 °C. Notably, Hirshfeld surface analysis is employed to visualize and quantify intermolecular interactions, aiding in the identification and examination of active sites for the CO2 molecule. This study demonstrates the effectiveness of a supramolecular CO2 adsorption approach, utilizing flexible and low-symmetry mesocate components. The development of advanced carbon capture materials for both low- and high-pressure applications may benefit from this potentially promising approach.
SN  - 2470-1343
ER  -