Abstract: A photon upconversion composition containing a naphthalene compound substituted with a substituent containing at least one selected from the group consisting of an alkynyl group, a substituted silyl group, a benzene ring, an heteroaromatic ring, a cyano group and a halogen atom can efficiently convert an excitation light into a UV light at a low excitation light intensity.

Abstract: The present invention provides a thermoelectric conversion material having a considerably increased Seebeck coefficient, and a thermoelectric conversion device, a thermo-electrochemical cell and a thermoelectric sensor which include the material. The thermoelectric conversion material of the present invention includes a redox pair and a capture compound which captures only one of the redox pair selectively at low temperature and releases at high temperature.

Abstract: Disclosed is a composition of a polarization source dispersed in an aqueous medium. Preferably, the polarization source forms a composite with a host. As the aqueous medium, a hydrogel is also usable in addition to water.

Abstract: Provided is a polarization source having high oxygen resistance and capable of stably transitioning the spin polarization of electron to nucleus even in an environment where oxygen exists. A polarization source for dynamic nuclear polarization containing a molecule represented by the following general formula. One to six of Z1 to Z10 each represent N, and the others each independently represent C—R. R represents a hydrogen atom or a substituent. n represents an integer of 1 to 4.

Abstract: A composition containing (1) a porous material and (2) a polarization source for dynamic nuclear polarization containing a molecule capable of being in an excited triplet state. According to the composition, a dynamic nuclear polarization system that has a long spin-lattice relaxation time and can readily introduce the polarization object thereto can be provided.

Abstract: The present invention provides a thermoelectric conversion material having a considerably increased Seebeck coefficient, and a thermoelectric conversion device, a thermo-electrochemical cell and a thermoelectric sensor which include the material. The thermoelectric conversion material of the present invention includes a redox pair and a capture compound which captures only one of the redox pair selectively at low temperature and releases at high temperature.

Abstract: A molecular-oriented polymer gel and its cast film obtained by self-assembly of a self-organizable amphiphilic compound and a monomer interacting with the amphiphilic compound, and then polymerizing the monomer, and their production methods.

Abstract: The invention provides a process for producing DNA nanocages, characterized by comprising a step of two-dimensionally assembling three types of oligonucleotides by hybridization to form tridirectionally branched double-strand DNA having self-complementary chains in the terminals, and a step of three-dimensionally self-organizing the resulting tridirectionally branched double-strand DNAs so as to consume all of the self-complementary terminals. Since the DNA nanocages according to the invention can easily be formed from DNAs by one-step procedure and include nanoparticles in the interior, the DNA nanocages are significantly effective for the development of functional materials using DNAs.

Abstract: A molecular-oriented polymer gel and its cast film obtained by self-assembly of a self-organizable amphiphilic compound and a monomer interacting with the amphiphilic compound, and then polymerizing the monomer, and their production methods.

Abstract: A ferrocene-containing, organic gelling compound represented by the following general formula (I): wherein R1 and R2 represent the same or different alkyl groups having 2 or more carbon atoms or alkyl groups containing at least one ether bond, X and Y independently represent a hydrogen atom or a substituent, and n represents an integer of 1 or 2, and a gel and a cast film using the compound.

Abstract: A ferrocene-containing, organic gelling compound represented by the following general formula (I): wherein R1 and R2 represent the same or different alkyl groups having 2 or more carbon atoms or alkyl groups containing at least one ether bond, X and Y independently represent a hydrogen atom or a substituent, and n represents an integer of 1 or 2, and a gel and a cast film using the compound.

Abstract: The invention provides a process for producing DNA nanocages, characterized by comprising a step of two-dimensionally assembling three types of oligonucleotides by hybridization to form tridirectionally branched double-strand DNA having self-complementary chains in the terminals, and a step of three-dimensionally self-organizing the resulting tridirectionally branched double-strand DNAs so as to consume all of the self-complementary terminals. Since the DNA nanocages according to the invention can easily be formed from DNAs by one-step procedure and include nanoparticles in the interior, the DNA nanocages are significantly effective for the development of functional materials using DNAs.

Abstract: A hydrogel formed by adding an anion having a molecular weight of 90 or more to an aqueous dispersion of a cationic amphiphile comprising a linear or branched alkyl group having 10 or less carbon atoms in a hydrophobic moiety. The hydrogel has a network having a bilayer-membrane, nano-fiber structure and undergoes a reversible gel-sol transformation.

Abstract: A hydrogel formed by adding an anion having a molecular weight of 90 or more to an aqueous dispersion of a cationic amphiphile comprising a linear or branched alkyl group having 10 or less carbon atoms in a hydrophobic moiety. The hydrogel has a network having a bilayer-membrane, nano-fiber structure and undergoes a reversible gel-sol transformation.