Negative area compressibility (NAC) and negative thermal expansion (NTE) are material behaviors raising high hope for applications such as ultrasensitive manometry and thermometry. However,the group of NAC materials is primarily limited to two-dimensional (2D) coordination compounds whose layered structure is prone to bidirectional compression when pressurized. Here,we report an alternative strategy that does not employ the formation of metal—organic systems but takes advantage of the pliability of hydrogen-bonded networks for searching materials with very rare NLC and NAC behaviors. Indeed,a strong NAC property,coupled with large NTE,has been identified for the hydrogen-bonded hydrochloride salt of L-arginine homologue (S)-2-amino-3-guanidinopropanoic acid monochloride — (HAmGP)Cl and its deuterated analogue -(DAmGP)Cl.
展开▼
