Abstract: A chelate and associated security feature including a lanthanide metal and a ligand of formula (1), formula (2), or formula (3), where each of R1-R7 in formula (1) is independently selected from the group consisting of H, OH, NH2, Cl, F, OMe, OAr, OCF3, CF3, alkyl, aryl, phenyl, OPh, and heteroaromatic, where each of R1-R5 in formula (2) is independently selected from the group consisting of H, OH, NH2, Cl, F, OMe, OAr, OCF3, CF3, NMe2, CN, alkyl, aryl, phenyl, OPh, and heteroaromatic, and where R6 in formula (2) is selected from the group consisting of H, NH2, Cl, F, OMe, OAr, OCF3, CF3, NMe2, CN, alkyl, aryl, phenyl, OPh, and heteroaromatic, and where each of R1-R5 in formula (3) is independently selected from the group consisting of H, OH, NH2, Cl, F, OMe, OAr, OCF3, CF3, alkyl, aryl, phenyl, OPh, and heteroaromatic.

Abstract: A chelate and associated security feature including a lanthanide metal and a ligand of formula (1), formula (2), or formula (3), where each of R1-R7 in formula (1) is independently selected from the group consisting of H, OH, NH2, Cl, F, OMe, OAr, OCF3, CF3, alkyl, aryl, phenyl, OPh, and heteroaromatic, where each of R1-R5 in formula (2) is independently selected from the group consisting of H, OH, NH2, Cl, F, OMe, OAr, OCF3, CF3, NMe2, CN, alkyl, aryl, phenyl, OPh, and heteroaromatic, and where R6 in formula (2) is selected from the group consisting of H, NH2, Cl, F, OMe, OAr, OCF3, CF3, NMe2, CN, alkyl, aryl, phenyl, OPh, and heteroaromatic, and where each of R1-R5 in formula (3) is independently selected from the group consisting of H, OH, NH2, Cl, F, OMe, OAr, OCF3, CF3, alkyl, aryl, phenyl, OPh, and heteroaromatic.

Abstract: An aerated compost and waste collection bin is disclosed. The bin includes a body portion having a bottom, at least one sidewall from the bottom, and an open top forming a container. A perforated tube extends upwards from the bottom of the body portion. At least one lateral vent tube is connected to the perforated tube and the sidewall of the body portion. The lateral vent tube allows air to circulate from outside the body portion of the bin through to the perforated tube.