Ultra-high Seebeck coefficient of a thermal sensor through entropic optimisation of ligand length of Fe(ii) spin-crossover (SCO) materials.

ABSTRACT: In this work, we present a spin-crossover (SCO) complex molecular formulation [Fe(L ⁿ )₂](BF₄)₂ in an electrochemical single couple solution. A Seebeck voltage arises when an electrochemical single couple solution is subjected to a temperature difference, resulting in a single couple reaction at either terminal of the electrochemical cell. The ultrahigh Seebeck coefficients were obtained due to a number of molecular optimisation strategies. The [Fe(L¹⁶)₂](BF₄)₂ complex demonstrated a maximum Seebeck coefficient of 8.67 mV K^-1, achieved through a six-pronged approach to maximise entropy during the transition from low spin (LS) to high spin (HS) through: (i) a change in spin state, (ii)

SUBMITTER: Che Hassan H 

PROVIDER: S-EPMC9034036 | biostudies-literature | 2021 Jun

REPOSITORIES: biostudies-literature