High-pressure, high-temperature synthesis of nanostructured polydiphenylbutadiyne confined in the 1-dimensional pores of single crystal AlPO4-54

Marco Fabbiani (1) , Sebastiano Romi (2) , Frederico Alabarse (3) , Anna Celeste (4) , Francesco Capitani (4) , Ferenc Borondics (4) , Christophe Sandt (4) , Sylvie Contreras (5) , Leszek Konczewicz (5, 6) , Jérôme Rouquette (1) , Mario Santoro (2, 7) , Julien Haines (1)

1 ICGM - Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier
2 LENS - European Laboratory for Non-Linear Spectroscopy
3 Elettra Sincrotrone Trieste
4 SSOLEIL - Synchrotron SOLEIL
5 L2C - Laboratoire Charles Coulomb
6 IHPP - Institute of High Pressure Physics [Warsaw]
7 INO - Istituto Nazionale di Ottica

The π-conjugated polymer polydiphenylbutadiyne was prepared at the nanoscale confined inside the 1.2 nm 1-D pores of the aluminophosphate AlPO4-54. Molten 1,4-diphenyl-1,3-dibutadiyne (DPB) was inserted in the pores of AlPO4-54 at pressures below 0.3 GPa as confirmed by X-ray diffraction. Heating to 190 °C under a pressure of 0.4 GPa induced polymerization of DPB in the pores. Infrared microscopy indicates full polymerization in the pores and the presence of characteristic saturated C–H defects common to other nanostructured PDPB materials exhibiting important photocatalytic properties. This nanostructured PDPB confined in the hygroscopic AlPO4-54 host could be of interest for applications in gas sensing, photocatalysis and hydrogen generation.

Domaines: Polymères

Marco Fabbiani, Sebastiano Romi, Frederico Alabarse, Anna Celeste, Francesco Capitani, et al.. High-pressure, high-temperature synthesis of nanostructured polydiphenylbutadiyne confined in the 1-dimensional pores of single crystal AlPO4-54. CrystEngComm, 2022, 24 (40), pp.7109-7117. ⟨10.1039/d2ce00938b⟩. ⟨hal-04266804⟩