Nanocalorimetry study of the evolution of melting characteristics of single layer silver alkanethiolate lamella: Fast heating/cooling and electrical annealing
Ye, Z.[Zichao], de la Rama, L. P.[Lito P.], Hu, L.[Liang], Efremov, M. Y.[Mikhail Y.], Allen, L. H.[Leslie H.]
Nanocalorimetry (NanoDSC) is applied to measure the melting characteristics of single layer silver pentadecanethiolate (AgSC15) crystals. Its attribute of high sensitivity enables the characterization of single layer species. The fast heating ( 50,000 K/s) and cooling ( 104 K/s) rates employed allow an in situ study of lamella layer evolution. By controlling the maximum temperature (Tmax) achieved during heating/cooling cycles, the samples can be either melted or annealed. If Tmax is larger than sample melting point (Tm), the first NanoDSC pulse shows the melting behavior of the as-synthesized crystal. The following rapid cooling (quenching) causes crystallinity loss. If Tmax is smaller than Tm, electrical annealing takes place and partially recovers the quenched layered structure, but the melting enthalpy never reaches that of the first pulse.
Compounds
#
Formula
Name
1
C15H31AgS
silver(I) pentadecane-1-thiolate
Datasets
The table above is generated from the ThermoML associated json file (link above).
POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied;
the numbers refer to the table of compounds on the left.
Type
Compound-#
Property
Variable
Constraint
Phase
Method
#Points
POMD
1
Normal melting temperature, K ; Crystal
Crystal
Liquid
Air at 1 atmosphere
DTA
1
POMD
1
Molar enthalpy of transition or fusion, kJ/mol ; Crystal