A composition comprising a first infrared absorbing material which is a doped metal oxide comprising indium and/or tin; and a second infrared absorbing material which is a compound selected from: or a salt or polymer thereof, wherein —M is a metal selected from a group 3-10 (Group 1MB-VIII) element or a lanthanide; —R1 is selected from hydrogen, phosphonate, sulphonate, nitro, halo, cyano, thiocyano, thioalkyl, thioaryl, alkyl, alkoxy, aryl, aryloxy, amines, substituted amines and substituted aryl; —one of R2 and R3 is oxygen and the other of R2 and R3 is NO; —n is a number corresponding to half the co-ordination number of the metal M; —each L and L′ is independently a ligand complexed to the metal M; and —y is a number corresponding to the co-ordination number of the metal M.
一种组合物,包含第一种红外吸收材料,它是一种掺杂的金属氧化物,包括
铟和/或
锡;以及第二种红外吸收材料,它是一种选自以下物质的化合物:或其盐或聚合物,其中-M是选自第3-10族(第1MB-VIII族)元素或
镧系元素的
金属;-R1选自氢、
膦酸盐、
磺酸盐、硝基、卤素、
氰基、
硫氰基、
硫代烷基、
硫代芳基、烷基、烷氧基、芳基、芳氧基、胺、取代胺和取代芳基;-R2和R3中的一个是氧,R2和R3中的另一个是NO; -n是与
金属M的配位数的一半相对应的数字; -每个L和L′各自是与
金属M络合的
配体;以及 -y是与
金属M的配位数相对应的数字。