Abstract:
The invention relates to a luminescence-based colorimetric sensor formulation and method of use thereof. The sensor formulation can be used to assess oxygen concentration, particularly in controlled oxygen atmospheres such as food packaging. In embodiments, the invention also relates to sensor-containing laminate films for food packaging, and methods of their preparation.
Abstract:
The present invention discloses a pyrene tetra boronic acid compound of formula (I) which is useful for permanent writing using water as an ink, glucose sensing and fluorescent labelling application The present application also discloses a process for preparation of said compound.
Abstract:
The present invention relates to a 1, 4 bidentate ligand comprising first and second ligand centres, wherein the first ligand centre is an sp 2 -hybridised carbon or a nitrogen atom; wherein the second ligand centre is a nitrogen atom in a five- or six-membered aromatic or hetero-aromatic ring, said ring having a substantially linear substituent T 1 meta or para to the nitrogen atom; wherein T 1 has the fomula (1) : -Ar 1 a -Y 1 b -Ar 2 -[Y 2 c -Ar 2 ] d -S-B and wherein T 1 is attached to the ring by X 1 , wherein X 1 is a bond, a methylene group, a substituted methylene group, an oxygen atom or a sulphur atom, wherein each Ar 1 and Ar 2 are independently selected from the group of C 6 to C 20 aromatic and C 4 to C 20 heteroaromatic groups, wherein Y 1 and each Y 2 is independently an optionally substituted C 2 or acetonitrile trans double-bond linking moiety, wherein a is 0, 1, 2 or 3, wherein b is 0, 1 or 2, wherein each c is independently 0, 1 or 2, wherein d is 0, 1,2, 3 or 4, S is a flexible spacer, and B represents a moiety having one or more cross-linkable functionalities.
Abstract:
Embodiments of the present disclosure pertain to methods of monitoring an environment for the presence of a solvent by: (i) exposing the environment to a luminescent compound, where the relative luminescence emission intensity of the luminescent compound changes upon interaction with the solvent; and (ii) monitoring a change in the relative luminescence emission intensity of the luminescent compound, where the absence of the change indicates the absence of the solvent from the environment, and where the presence of the change indicates the presence of the solvent in the environment. The luminescent compounds include a phosphorous atom with one or more carboxyl groups, where the carboxyl groups are coordinated with one or more metallic ions (e.g., lanthanide ions and yttrium ions). The present disclosure also pertains to sensors for monitoring an environment for the presence of a solvent, where the sensors include one or more of the aforementioned luminescent compounds.
Abstract:
The invention relates to electronically neutral metal complexes as luminescent labels. The positive charge of the metal ion in the complex is neutralized by the negatively charged groups that are covalently linked to the nitrogen-containing diimine ligands, such as 2,2- bipyridine, 1,10-phenanthroline and their derivatives. The electronic neutrality reduces the impact of the metal complexes on the biological and/or biochemical activities of the labeled biomolecules, while the intensity of luminescent emission under electrochemical excitation is enhanced. These luminescent metal complex labels are useful in bioanalytic methodology development, with luminescence as the signal modality, such as electrochemiluminescence.
Abstract:
The instant disclosure provides chemiluminescent light producing devices comprising a biodegradable polyhydroxyalkanoate composition, said biodegradable polyhydroxyalkanoate composition forming an outer containment device enclosing at least one inner frangible vial, said outer containment device and said vial containing a chemical light system, said outer containment device and said vial each containing one of at least one oxalate component and at least one peroxide component of said chemical light system, separately, said at least one oxalate component and said at least one peroxide component producing visible light when intermixed in said polyhydroxyalkanoate outer containment device.
Abstract:
A chemiluminescent, multiple-part marking system comprising at least one first reactant and at least one second reactant, wherein the at least one first reactant is chosen from a viscous oxalate composition, and wherein the at least one second reactant is chosen from a liquid activator. A chemiluminescent, multiple-part marking system comprising at least one first reactant and at least one second reactant, wherein the at least one first reactant is chosen from a liquid oxalate composition, and wherein the at least one second reactant is chosen from a viscous activator composition. A containment device comprising at least one first containment part comprising at least one first chemiluminescent reactant, at least one second containment part comprising at least one second chemiluminescent reactant, at least one barrier separating the at least one first containment part and the at least one second containment part, and at least one activation mechanism that, upon activation, allows fluid communication between the at least one first containment part and the at least one second containment part