An electro-polarizable compound has the following general formula: ##STR00001## where Core1 is an aromatic polycyclic conjugated molecule having two-dimensional flat form and self-assembling by pi-pi stacking in a column-like supramolecule, which is tetrapirolic macro-cyclic fragment, R1 is an dopant group connected to Core1, m is number of R1 which is equal to 1, 2, 3 or 4, R2 is a substituent comprising one or more ionic groups, p is number of R2 which is equal to 0, 1, 2, 3 or 4. The fragment marked NLE containing the Core1 with at least one R1 has a nonlinear effect of polarization. Core2 is an electro-conductive oligomer self-assembling by pi-pi stacking in a column-like supramolecule, n is number of Core2 which is equal to 2, or 4, R3 is a substituent comprising one or more ionic groups, s is number of R3 which is equal to 0, 1, 2, 3 or 4. R4 is a non-polar resistive substituent, k is a number of R4 which is equal to 0, 1, 2, 3, 4, 5, 6, 7 or 8.

An electro-polarizable compound having the following formula (I): ##STR00001##
where Core1 is an aromatic polycyclic conjugated molecule having two-dimensional flat form and self-assembling by pi-pi stacking in a column-like supramolecule comprising one or more rylene fragments, R1 is an electron donor group connected to Core1 and R1 is an electron acceptor group connected to the Core1, m is number of acceptor group R1, m is a number of donor group R, m and m are equal to 0, 1, 2, 3, 4, 5 or 6, wherein m and m are not both equal to 0, R2 is a substituent comprising one or more ionic groups from a class of ionic compounds that form ionic liquids connected to the Core1-directly or via a connecting group, p is a number of ionic groups R2 which is equal to 0, 1, 2, 3 or 4; wherein the fragment marked NLE containing the Core1 with at least one group R1 and/or R1 has a nonlinear effect of polarization, wherein Core2 is an electro-conductive oligomer, n is a number equal to 0, 2, or 4, R3 is a substituent comprising one or more ionic groups from a class of ionic compounds that form ionic liquids connected to the Core2 directly or via a connecting group, s is a number of the ionic groups R3 which is equal to 0, 1, 2, 3 or 4; wherein R4 is a non-conjugate cyclic or polycyclic resistive substituent electrically insulating the column-like supramolecules from each other and connected to the aromatic polycyclic conjugated molecule (Core1) and/or to the Core2 directly or via a connecting group, k is a number of substituents R4 which is equal to 1, 2, 3, 4, 5, 6, 7 or 8.

The present invention relates generally to novel rhodamine dyes which upon conjugation with another molecule form single isomeric conjugation products. These novel rhodamine dyes contain only one single functional group on the rhodomine molecule for conjugation so that their conjugation products are single isomeric conjugation products.

The present invention relates generally to novel rhodamine dyes which upon conjugation with another molecule form single isomeric conjugation products. These novel rhodamine dyes contain only one single functional group on the rhodomine molecule for conjugation so that their conjugation products are single isomeric conjugation products.

The invention provides an anthracene-based organic dye and a preparation method thereof. The organic dye provided by the invention has a structure of formula (I) or formula (II), wherein R.sub.a, R.sub.b, and R.sub.2-1 to R.sub.2-4 are as defined herein. The organic dye provided by the invention is obtained by modifying an anthracene with R.sub.a and R.sub.b or modifying anthracene-based groups decorated with an aryl group or a heteroaryl group with R.sub.a and R.sub.b, thereby the power conversion efficiency of a dye sensitized solar cell is significantly improved when the organic dye prepared according to the present invention is applied in a dye-sensitized solar cell. Furthermore, the preparation method of the organic dye according to the present invention is quite simple together with abundant raw materials and low cost, making it possible to be commercialized.

The invention provides an anthracene-based organic dye and a preparation method thereof. The organic dye provided by the invention has a structure of formula (I) or formula (II), wherein R.sub.a, R.sub.b, and R.sub.2-1 to R.sub.2-4 are as defined herein. The organic dye provided by the invention is obtained by modifying an anthracene with R.sub.a and R.sub.b or modifying anthracene-based groups decorated with an aryl group or a heteroaryl group with R.sub.a and R.sub.b, thereby the power conversion efficiency of a dye sensitized solar cell is significantly improved when the organic dye prepared according to the present invention is applied in a dye-sensitized solar cell. Furthermore, the preparation method of the organic dye according to the present invention is quite simple together with abundant raw materials and low cost, making it possible to be commercialized.

The present invention relates generally to novel rhodamine dyes which upon conjugation with another molecule form single isomeric conjugation products. These novel rhodamine dyes contain only one single functional group on the rhodomine molecule for conjugation so that their conjugation products are single isomeric conjugation products.

The present invention relates generally to novel rhodamine dyes which upon conjugation with another molecule form single isomeric conjugation products. These novel rhodamine dyes contain only one single functional group on the rhodomine molecule for conjugation so that their conjugation products are single isomeric conjugation products.

An electro-polarizable compound has the following general formula:

##STR00001## where Core1 is an aromatic polycyclic conjugated molecule having two-dimensional flat form and self-assembling by pi-pi stacking in a column-like supramolecule, which is tetrapirolic macro-cyclic fragment, R1 is an dopant group connected to Core1, m is number of R1 which is equal to 1, 2, 3 or 4, R2 is a substituent comprising one or more ionic groups, p is number of R2 which is equal to 0, 1, 2, 3 or 4. The fragment marked NLE containing the Core1 with at least one R1 has a nonlinear effect of polarization. Core2 is an electro-conductive oligomer self-assembling by pi-pi stacking in a column-like supramolecule, n is number of Core2 which is equal to 2, or 4, R3 is a substituent comprising one or more ionic groups, s is number of R3 which is equal to 0, 1, 2, 3 or 4. R4 is a non-polar resistive substituent, k is a number of R4 which is equal to 0, 1, 2, 3, 4, 5, 6, 7 or 8.

The invention provides an anthracene-based organic dye and a preparation method thereof. The organic dye provided by the invention has a structure of formula (I) or formula (II), wherein R.sub.a, R.sub.b, and R.sub.2-1 to R.sub.2-4 are as defined herein. The organic dye provided by the invention is obtained by modifying an anthracene with R.sub.a and R.sub.b or modifying anthracene-based groups decorated with an aryl group or a heteroaryl group with R.sub.a and R.sub.b, thereby the power conversion efficiency of a dye sensitized solar cell is significantly improved when the organic dye prepared according to the present invention is applied in a dye-sensitized solar cell. Furthermore, the preparation method of the organic dye according to the present invention is quite simple together with abundant raw materials and low cost, making it possible to be commercialized.