A luminescent compound has a structure represented by a general formula (1),

##STR00001##

wherein R represents a luminescent dye skeleton, X represents an ionic substituent, and L represents a single bond, an oxygen atom, a sulfur atom, a selenium atom, or an NH group.

The present invention provides fluorogenic compounds for the detection of target metal ions wherein the compounds exhibit a Stokes shift greater than 50 nm and the detectable signal is modulated by photoinduced electron transfer (PET). The present compounds consist of three functional elements, the ion sensing moiety (chelating moiety), the reporter moiety (fluorophore or fluorescent protein) and spacer or linker between the sensing and reporter moieties of the present compound that allows for PET upon binding of a metal ion and excitation by an appropriate wavelength.

The present invention provides fluorogenic compounds for the detection of target metal ions wherein the compounds exhibit a Stokes shift greater than 50 nm and the detectable signal is modulated by photoinduced electron transfer (PET). The present compounds consist of three functional elements, the ion sensing moiety (chelating moiety), the reporter moiety (fluorophore or fluorescent protein) and spacer or linker between the sensing and reporter moieties of the present compound that allows for PET upon binding of a metal ion and excitation by an appropriate wavelength.

Provided are processes for producing fluorescent naphthalimide diesters of Formula (I), useful as fluorescent tracer dyes for fluid system leak detection, wherein each of R.sup.1 and R.sup.2 is, independently of the other, a saturated, linear hydrocarbon chain having from 2 to 10 carbon atoms; and each of Z.sup.1 and Z.sup.2 is, independently of the other, a fatty acid moiety having a saturated or unsaturated, linear or branched, hydrocarbon chain having from 8 to 24 carbon atoms, and from 0 to 4 double bonds. Also provided are compositions of the aforesaid diesters of Formula (I). ##STR00001##

Provided are processes for producing fluorescent naphthalimide diesters of Formula (I), useful as fluorescent tracer dyes for fluid system leak detection, wherein each of R.sup.1 and R.sup.2 is, independently of the other, a saturated, linear hydrocarbon chain having from 2 to 10 carbon atoms; and each of Z.sup.1 and Z.sup.2 is, independently of the other, a fatty acid moiety having a saturated or unsaturated, linear or branched, hydrocarbon chain having from 8 to 24 carbon atoms, and from 0 to 4 double bonds. Also provided are compositions of the aforesaid diesters of Formula (I). ##STR00001##

Compounds useful as fluorescent or colored dyes are disclosed. The compounds have the following structure (I):

##STR00001##

including stereoisomers, salts and tautomers thereof, wherein R.sup.1, R.sup.2, R.sup.3, L.sup.1, L.sup.2, L.sup.3, L.sup.4, L.sup.5, L.sup.6, M.sup.1, M.sup.2, A, q, w and n are as defined herein. Methods associated with preparation and use of such compounds are also provided.

Compounds useful as fluorescent or colored dyes are disclosed. The compounds have the following structure (I):

##STR00001##

including stereoisomers, salts and tautomers thereof, wherein R.sup.1, R.sup.2, R.sup.3, L.sup.1, L.sup.2, L.sup.3, L.sup.4, L.sup.5, L.sup.6, M.sup.1, M.sup.2, A, q, w and n are as defined herein. Methods associated with preparation and use of such compounds are also provided.

Provided is a 4-oxoquinoline compounds of the formula (I) (I) wherein A is selected from diradicals of the formulae (A.1), (A.2), (A.3), (A.4), (A.5) and (A.6), (A.1) (A.2) (A.3) (A.4) (A.5) (A.6) wherein R.sup.1, R.sup.2a, R.sup.2b, R.sup.3, R.sup.3a, if present R.sup.4a, R.sup.4b, R.sup.5a, R.sup.5b, R.sup.6a, R.sup.6b, R.sup.6c, R.sup.6d, R.sup.n1, R.sup.n2, R.sup.n3, R.sup.n4, R.sup.m5, R.sup.m6, R.sup.m7, R.sup.m8, R.sup.7, R.sup.8a, R.sup.9 and R.sup.9a are as defined in the claims and in the description. Also provided is a method for their preparation and their use.

##STR00001## ##STR00002##

A 4-hydroxquinoline compound has the formula (I)

##STR00001## wherein A is selected from diradicals of the formulae (A.1), (A.2), (A.3), (A.4), (A.5), and (A.6) wherein R.sup.1, R.sup.2a, R.sup.2b, R.sup.3, if present R.sup.4a, R.sup.4b, R.sup.5a, R.sup.5b, R.sup.6a, R.sup.6b, R.sup.6c, R.sup.6d, R.sup.n1, R.sup.n2, R.sup.n3, R.sup.n4, R.sup.m5, R.sup.m6, R.sup.m7, R.sup.m8, R.sup.7, R.sup.8a, R.sup.9 are as defined in the description.

An electro-polarizable compound has the following general formula:

##STR00001##

Core1 is an aromatic polycyclic conjugated molecule having two-dimensional flat form and self-assembling by pi-pi stacking in a column-like supramolecule. R1 are electron donor groups connected to Core1 and R1′ are electron acceptor groups connected to Core1, m is number of acceptor groups R1, m′ is a number of donor groups R′. The numbers m and m′ are equal to 0, 1, 2, 3, 4, 5 or 6, but both m and m′ are not both equal to 0. R2 is a substituent comprising one or more ionic groups connected to Core1 directly or via a connecting group; a number p of ionic groups R2 is 0, 1, 2, 3 or 4. The fragment marked NLE has a nonlinear effect of polarization. Core2 is a self-assembling electro-conductive oligomer, a number n of the such oligomers is 0, 2, or 4. R3 is a substituent comprising one or more ionic groups connected to Core2; a number s of the ionic groups R3 is 0, 1, 2, 3 or 4. R4 is a resistive substituent providing solubility of the compound in a solvent and electrically insulating the column-like supramolecules from each other. A number k of substituents R4 is 0, 1, 2, 3, 4, 5, 6, 7 or 8.