RT Journal Article
T1 Nanostructured discotic Pd(II) metallomesogens as one-dimensional proton conductors
A1 Cuerva de Alaiz, Cristian
A1 Campo Santillana, José Antonio
A1 Cano Esquivel, María Mercedes
A1 Schmidt, Rainer
AB A novel family of square-planar Pd(II) complexes based on isoquinoline-functionalised pyrazolate ligands [Pd(pzR(n,n)iq)2] (R(n,n) = C6H3(OCnH2n+1)2, n = 4, 6, 8, 10, 12, 14, 16, 18) has been synthesised and characterised. The new complexes show mesomorphic properties and exhibit columnar mesophases that are highly-stable in exceptionally wide temperature ranges of up to 345 °C. The formation of nanochannels in the fluid liquid crystal phases generates continuous pathways for one-dimensional proton conduction on the basis of C–H⋯N proton transfer. The complex with an intermediate chain length (n = 12) shows the highest proton conductivity of 1.34 × 10−4 S m−1 at 269 °C in the hexagonal columnar mesophase, and an activation energy of 0.84 eV. The influence of both the terminal alkyl chain length and the mesophase columnar organisation on the proton conduction mechanism is demonstrated. The series of Pd(II) complexes investigated in this work constitutes one of the first examples of proton-conducting metallomesogens with potential applications in PEM fuel cells.
PB Royal Society of Chemistry
SN 1477-9226
YR 2017
FD 2017
LK https://hdl.handle.net/20.500.14352/92690
UL https://hdl.handle.net/20.500.14352/92690
LA eng
NO Cuerva C, Campo JA, Cano M, Schmidt R. Nanostructured discotic Pd(ii) metallomesogens as one-dimensional proton conductors. Dalton Trans., 2017,46, 96-105
NO Ministerio de Economía y Competitividad (España)
NO Universidad Complutense de Madrid
DS Docta Complutense
RD 23 ene 2026