Solid-solid phase change aromatic azo compounds, method of manufacture, and use for thermal energy storage and release

Abstract

A compound of Formula (I) for energy storage, wherein each of R5 and R6 is independently C1-6 alkyl, C1-6 alkoxy, halogen, trihalomethyl, or cyano; G is a C2-36 hydrocarbon, preferably a cyclic hydrocarbon; Q is —C(O)O—, —C(S)O—, —C(O)NH—, —C(O)S—, —C(S)NH—, —NHC(O)NH—, —NHC(S)NH—, or —C(O)NHC(O)—; X is a bond or a C1-30 straight- or branched-chain, saturated or unsaturated hydrocarbon; are each independently aryl or heteroaryl 5- or 6-membered rings; each of R1, R2, R3, and R4 is in an ortho position to the azo group, and is independently halogen, C1-6 alkoxy, C1-6 alkylthio, halomethyl, dihalomethyl, trihalomethyl, or di(C1-6 alkyl)amino; r is 0 to 6; and p is 1 to 10, or 2 to 8, or 2 to 6, or 4 to 6, provided that r+p does not exceed the valence of G.

Dependencies are inferred from the claim text.