Abstract:
A novel cyanine compound of general formula (I) showing thermal behaviors suitable for optical recording applications, an optical recording material containing the same, and an optical recording material containing the same. wherein ring A and ring B each represent a benzene or naphthalene ring that may be substituted; at least one of the pair of adjacent groups R1 and R2 and the pair of adjacent groups R3 and R4 represent a pair of benzyl groups, and the other paired groups each represent an alkyl group having 1 to 4 carbon atoms or are connected to each other to form a 3- to 6-membered ring; Y1 and Y2 each represent an organic group having 1 to 30 carbon atoms; An m- represents an m-valent anion; m represents an integer 1 or 2; and p represents a coefficient for maintaining the charge neutrality.
Abstract:
Provided are a nonaqueous electrolyte excellent in prevention of overcharge and capable of retaining a small internal resistance and a high electrical capacity even after charge/discharge cycles and a nonaqueous secondary battery using the same. Specifically, the nonaqueous electrolyte of the invention is a lithium salt solution in an organic solvent and contains at least one compound having general formula (1), and the nonaqueous secondary battery includes a negative electrode capable of intercalating and deintercalating lithium, a positive electrode containing a transition metal and lithium, and the nonaqueous electrolyte of the invention. The details of formula (1) are as described in the description.
Abstract:
Provided are a polymerizable liquid crystal composition, a coating material, a medium, and a polarizing device each produced using a Polymerizable liquid crystal compound and a colorant and each capable of producing polarized light suitable for polarizing devices, and also a novel naphtholactam derivative, a novel coumarin derivative, a novel Nile Red derivative, and a novel anthracene derivative each suitable for use as the colorant. Specifically provided are a polymerizable liquid crystal composition containing (A) at least one liquid crystal compound having a polymerizable functional group, (B) at least one colorant, and (C) a polymerization initiator, and a novel naphtholactam derivative of formula (IV'), a novel coumarin derivative of formula (VI'), a novel Nile Red derivative of formula (VII'), and a novel anthracene derivative of formula (VIII') each suitable for use as the colorant (B).
Abstract:
Problem Provided are an additive for an electrolytic composition which can suppress the decrease of a short-circuit current and improve an open circuit voltage as compared to the case when conventional 4-TBpy is used as an additive for an electrolytic composition, and an electrolytic composition using this additive and a dye-sensitized solar cell. Solution The additive for an electrolytic composition for use in a dye-sensitized solar cell according to the present invention contains a pyridine derivative having a pyridine ring into which an alkylsilyl group is introduced, and it is preferable that this pyridine derivative has an alkylsilyl group at the 4-position of the pyridine ring, and it is more preferable that the pyridine derivative is 4-(trimethylsilyl)pyridine.
Abstract:
An indolium compound represented by the following general formula (I): wherein the ring A represents a benzene or naphthalene ring; the ring B represents a 5- or 6-membered heterocyclic or an aromatic ring; Z represents an alkyl group having 1 to 8 carbon atoms which may be substituted with a halogen atom or may be interrupted by -O-, -CO-, -OCO-, or -COO-, a sulfonyl group having a hydrocarbyl group having 1 to 8 carbon atoms, a sulfinyl group having a hydrocarbyl group having 1 to 8 carbon atoms, an alkylamino group having an alkyl group having 1 to 8 carbon atoms, a dialkylamno group having alkyl groups having 1 to 8 carbon atoms, a cyano group, a nitro group, a hydroxyl group, or a halogen group; R 1 represents a group represented by the general formula (II) or (II'); R 2 represents an organic group having 1 to 30 carbon atoms or a group represented by the general formula (II), (II'), or (III); Y represents a group represented by the general formula (III); n represents an integer from 0 to 4; An m- represents an m-valent anion, where m is 1 or 2; p represents a coefficient to keep the charge neutral:
Abstract:
Cyanine compounds represented by the general formula (I) which exhibit decomposition behavior suitable for the optical recording material to be used in optical recording layers of optical recording media for high-speed recording: (I) wherein A and B are each an optionally substituted benzene or naphthalene ring; X is O, S, Se, CR3R4, or NY; at least either of R1 and R2 is a group represented by the general formula (II) or (III) and when only either is a group represented thereby, the other is an organic group having 1 to 30 carbon atoms; R3 and R4 are each an organic group having 1 to 30 carbon atoms; Y is hydrogen or an organic group having 1 to 30 carbon atoms; at least either of Y1 and Y2 is a group represented by the general formula (IV) and when only either is a group represented thereby, the other is hydrogen or an organic group having 1 to 30 carbon atoms; Z is hydrogen, halogeno, or cyano; Anm- is an m-valent anion; m is an integer of 1 or 2; and p is a coefficient capable of keeping the electric charge neutral.
Abstract:
This carrier system carries at least one type of sensitizing dye described in (A) below and at least one type of sensitizing dye described in (B) below: (A) a sensitizing dye having a À-conjugated group and at least one anchor group, wherein the À-conjugated group and every one of the anchor group(s) are connected by a spacer having at least one alkylene and having an atomicity of 5 to 20; and (B) a sensitizing dye having a À-conjugated group and at least one anchor group, wherein the À-conjugated group and at least one anchor group are connected by a direct bond or by a spacer having at least one alkylene and having an atomicity of 1 to 4. In (A) and (B), the spacer is composed of carbon atoms, or carbon atoms and oxygen atom(s) etc., under predetermined conditions (see Description), and may have a branched chain or a ring structure.