摘要:
A polymer compound comprising at least one repeating unit selected from the group of repeating units shown by formula (1) or formula (2), wherein Ar1 to Ar4 represent an arylene group etc.; E1, E2, and E3 represent an aryl group (A) having three or more substituents, or a heterocyclic group (B) having one or more substituents, and the total number of substituents and hetero atoms of the heterocyclic ring is three or more; a and b represent 0 or 1, and 0
摘要翻译:包含至少一种选自式(1)或式(2)所示重复单元的重复单元的聚合物化合物,其中Ar 1至Ar 4表示亚芳基等; E1,E2和E3表示具有三个或更多个取代基的芳基(A)或具有一个或多个取代基的杂环基(B),并且杂环的取代基和杂原子的总数为三个或更多个; a和b表示0或1,0 <= a + b <= 1,其中Ar5至Ar10和Ar11表示亚芳基等; E4〜E9表示芳基或1价杂环基; l,m和n表示0〜2; o和p表示0或1,l + m + n + o + p为2以上。
摘要:
A polymer compound comprising as repeating units an optionally substituted fluorenediyl group and a phenylene group having one or more substituents, and comprising a repeating unit of the following formula (1) and/or a group of the following formula (2): (in the formula (1), Ar1 and Ar2 represent an arylene group or di-valent aromatic heterocyclic group, and Ar1 and may be the same or different.) (in the formula (2), Ar1 represents the same meaning as described above. Ar3 represents an aryl group or mono-valent aromatic heterocyclic group.).
摘要:
Provided is a polymer material comprising a conjugated polymer and a dendrimer, which can give a light-emitting device excellent in practical utilities such as a capability of driving at lower voltage and the like when it is used for a light-emitting layer of a device.
摘要:
A polymer light emitting material which contains a polymer compound comprising a repeating unit of the following formula (1) or (2) and having a polystyrene-reduced number-average molecular weight of 103 to 108, and which exhibits light emission from the triplet excited state. [wherein Ar1 and Ar2 each independently represent a trivalent aromatic hydrocarbon group or a trivalent heterocyclic group. X1 and X2 each independently represent O, S, C(═O), S(═O), SO2, C(R1)(R2), Si(R3)(R4), N(R5), B(R6), P(R7) or P(═O)(R8). X1 and Ar2 bond to adjacent carbon atoms in the aromatic ring of Ar1; and X2 and Ar1 bond to adjacent carbon atoms in the aromatic ring of Ar2]; [wherein Ar3 and Ar4 each independently represent a trivalent aromatic hydrocarbon group or a trivalent heterocyclic group. X3 and X4 each independently represent N, B, P, C(R9) or Si(R10). X3 and Ar4 bond to adjacent carbon atoms in the aromatic ring of Ar3; and X4 and Ar3 bond to adjacent carbon atoms in the aromatic ring of Ar4].
摘要:
A polymer characterized by comprising repeating units represented by the following formula (1) and having a number-average molecular weight, in terms of polystyrene, of 103 to 108. (In the formula, R1 represents hydrogen, alkyl, alkoxy, alkylthio, aryl, aryloxy, arylthio, arylalkyl, arylalkoxy, arylalkylthio, arylalkenyl, arylalkynyl, amino, substituted amino, silyl, substituted silyl, silyloxy, substituted silyloxy, monovalent heterocyclic group, or halogeno; and rings D and E each represents an optionally substituted aromatic ring.)
摘要:
A ferroelectric chiral smectic liquid crystal mixture comprising at least one compound of the formula (I): wherein R11 and R12 represent, independently each other, a C1-C20 alkyl, alkoxy or alkoxyalkyl group which may be substituted by at least one halogen atom and may have an unsaturated bond; A11, A12 and A13 represent, independently each other, a phenylene group which may be substituted by a fluorine atom, or the like; * indicates an asymmetric carbon atom; Z is a hydrogen atom or a fluorine atom; n is an integer of 0 to 10; r, s, t and u are each 0 or 1, provided that when u is 1, the compound (I) is a trans-olefin, and at least one compound of the formula (II): wherein R21 is a saturated or unsaturated C3-C20 alkyl group or a saturated or unsaturated C3-C20 alkoxyalkyl group; A21, A22 and A23 represent, independently each other, a phenylene group which may be substituted by a fluorine atom or the like; X2 is —C≡C— or the like; Z is a hydrogen atom or a fluorine atom; n is an integer of 1 to 10; m is 0 or 1; and * indicates an asymmetric carbon atom, which liquid crystal mixture has a high response speed and a small dependency of &tgr;-Vmin characteristic on temperature and a wide temperature driving margin.
摘要:
Provide is a novel phenylacetylene compound (1) which has a large anisotropy of refractive index, tends to be mixed with other liquid crystals, and is more advantageous in stability to light, a liquid crystal composition and a liquid crystal element usable for an optical shutter, a display element, ##STR1## A.sup.1 to A.sup.12 each independently represent a hydrogen atom, a fluorine atom, or an alkyl group having 1 to 10 carbon atoms, and at least one is an alkyl group.
摘要:
A fluorine-containing optically active compound represented by the formula (1): ##STR1## wherein R.sub.1 is a saturated or unsaturated C.sub.3 -C.sub.20 alkyl group or a saturated or unsaturated C.sub.3 -C.sub.20 alkoxyalkyl group; A.sup.1, A.sup.2 and A.sup.3 independently represent one of the following groups: ##STR2## provided that, when A.sup.1 is a condensed ring group, a sum of p and q is 0 or 1 and A.sup.2 and A.sup.3 are both monocyclic groups, or when A.sup.1 is a monocyclic group, a sum of p and q is 1 or 2 with the proviso that when the sum of p and q is 2, A.sup.2 and A.sup.3 are both monocyclic groups; X is --CH.sub.2 CH.sub.2 --, --CH.dbd.CH-- or --C.tbd.C--; W is a fluorine atom or a hydrogen atom; n is an integer of 1 to 10; m, p and q are each 0 or 1; u and w are each an integer of 0 to 3; and * indicates an asymmetric carbon atom, which is useful as a component of a liquid crystal mixture.
摘要:
Optically active biphenyl derivatives including optically active biphenyl carboxylic acid derivative, hydroxybiphenyl derivative, alkoxybiphenylalkanol derivative and alkoxybiphenylalkanol derivative have the following structural formula: ##STR1## wherein R.sup.1 represents an alkyl group of 3-20 carbon atoms, R.sup.2 represents an alkyl group or alkoxyalkyl group of 1-20 carbon atoms which may optionally be substituted with at least one halogen atom. X represents --O--, --COO-- or --OCO--, m represents 0 or 1, n represents an integer of 1-6 and p represents 0 or 1, and the * mark represents an asymmetric carbon atom. These optically active biphenyl derivatives are useful as a ferroelectric liquid crystal material or its component having a sufficient spontaneous polarization and by which a high speed response is possible and which further exhibits a ferroelectric liquid crystal phase in a temperature region around room temperature.
摘要:
Disclosed in this invention are the phenylpyrimidine derivatives represented by the general formula I: ##STR1## the alcohols represented by the formula: ##STR2## usable as starting material for the preparation of the phenylpyrimidine derivatives, and the processes for preparing such derivatives. The phenylpyrimidine derivatives of the formula I according to the present invention have very excellent properties as a liquid crystal compound and can be utilized effectively for the production of liquid crystal elements.