摘要:
Disclosed is a photographic element comprising a light-sensitive silver halide emulsion layer having associated therewith a bicyclic azole dye-forming coupler compound having Formula I: wherein: BA represents a bicyclic azole coupler nucleus with —(C(R1)(R2))P— bonded to a ring carbon in a non-coupling position of the coupler nucleus; p is 1 or 2, and each R1 and R2 is independently selected from H and a substituent group, provided that any two of R1 and R2 may join to form a ring; Ra and Rb are each independently selected from H and a substituent group, provided that substituent groups may join to form a ring; each Y is an independently selected substituent and m is 0-4; X is selected from the group consisting of —C(O)—, —S(O)2—, —S(O)—, and —P(O)(OH)—; W is a connecting group having a chain of up to four atoms between X and Z, and n=0 or 1; and a) when n=0, Z is —NHR5 where R5 is H or a substituent, and b) when n=1, Z is selected from —OH, —SO2NHR5, and —NHR6 where R5 is H or a substituent group and R6 is a substituent bonded to —NH— by an electron withdrawing group in R6; provided that the ClogP value of the coupler compound is at least 5.0. The element provides improved color rendition.
摘要:
Disclosed is a process for forming a 1H-pyrazolo (1,5-b)-[1,2,4]-triazole compound by ring closing a pyrazoloamidine compound comprising reacting the amidine with an oxidizing agent having a reduction potential vs Ag/AgCl that is more positive than −0.16V and less than +1.43V in the presence of a halogen atom. The invention also discloses certain triazole compounds that are successfully made by the conventional process. The process and compounds of the invention provide improved yields and reduce or eliminate unwanted side-reactions.
摘要:
An OLED device comprises an anode and a cathode and located there-between a light emitting layer containing a light emitting dopant and a host comprising a monoanthracene derivative.
摘要:
An electroluminescent device comprises a light emitting layer including an anthracene material bearing at least one aryl ring in the 2-position and having a hydrogen or an alkyl group in the 6-position and having up to 12 aromatic carbocyclic rings including at least one naphthalene group in the 9-position of the anthracene group and an aryl group in the 10-position, the anthracene material including among the rings only carbocyclic rings.
摘要:
Disclosed is an OLED device comprising an anode and a cathode and located there-between a light emitting layer containing a light emitting dopant and a host comprising a monoanthracene derivative of formula (I): wherein R1–R8 are H; R9 is not the same as R10; R9 is a biphenyl group containing no fused rings with aliphatic carbon ring members; R10 is an ortho-substituted- or meta monosubstituted phenyl group; provided that R9 and R10 are free of amines and sulfur compounds.
摘要翻译:公开了一种OLED器件,其包括阳极和阴极,并且位于包含发光掺杂剂的发光层和包含式(I)的单蒽衍生物的主体之间:其中R 1〜R 8是H; R 9不同于R 10; R 9是不含脂肪族碳环成员的稠环的联苯基; R 10是邻位取代或间位单取代的苯基; 条件是R 9和R 10不含胺和硫化合物。
摘要:
A heat transferable dye donor element includes a heat transferable dye and an N-oxyl radical light stabilizer that is derived from a hindered amine. The N-oxyl radical has the following formula, wherein R1, R2, R5, and R6 are each independently selected from a straight or branched C1-C6 alkyl, and R3 and R4 are each independently selected from H, OH, OR, COOH, or COOR, wherein R is a straight or branched C1-C6 alkyl or alkene, and has a molecular weight of 600 or less. The dye donor element includes a heat transferable material that can be in one or more sections or patches including heat transferable dye patches. The heat transferable material provides better dye image stability when applied to a thermal receiver element.
摘要:
A heat transferable material includes a heat transferable polymeric binder and a light stabilizer that is an N-oxyl radical derived from a hindered amine, the N-oxyl radical having the following formula, wherein R1, R2, R5, and R6 are each independently selected from a straight or branched C1-C6 alkyl, and R3 and R4 are each independently selected from H, OH, OR, COOH, or COOR, wherein R is a straight or branched C1-C6 alkyl or alkene, and having a molecular weight of 600 or less, is described. The heat transferable material can be in one or more sections or patches on a thermal donor element to provide a protective overcoat material. Optionally, a patch in the donor element can also include a dye. The heat transferable material provides better image stability and improved iridescence when applied to a thermal, inkjet, electophotographic, or silver halide receiver.
摘要:
An electroluminescent device includes a light-emitting layer containing a host material and: (a) a compound of Formula (1): X1—Ar1—C(R1)═C(R2)—Ar2 (1) wherein: Ar1 represents a divalent aromatic group; Ar2 represents an aromatic group; X1 represents at least one electron-donating group; R1 and R2 independently represent hydrogen or a substituent; and (b) a light-emitting boron complex having an absorption spectrum that overlaps with the emission spectrum of compound (1). The device serves to improve luminance efficiency while maintaining good color purity.
摘要翻译:电致发光器件包括含有主体材料的发光层,和:(a)式(1)的化合物:<?in-line-formula description =“In-line formula”end =“lead”→> -C(R 1)2 -C(R 2) - Ar 2 - (1)<?in-line-formula description =“In-line Formulas”end =“tail”?>其中:Ar 1表示二价芳族基团; Ar 2表示芳族基团; X 1表示至少一个给电子基团; R 1和R 2独立地表示氢或取代基; 和(b)具有与化合物(1)的发射光谱重叠的吸收光谱的发光硼络合物。 该装置用于提高发光效率,同时保持良好的色纯度。
摘要:
To assist transfer of toner images from a first transfer surface to a second transfer surface, the first transfer surface is actively cooled to prevent the toner sticking to it. Preferably, the cooling is accomplished by thermoelectric control device strips positioned in heat conducting relation with the first transfer surface. A thermoelectric control device can also be used to heat a second or receiving surface to which the toner is to be transferred to farther assist the transfer process.
摘要:
A small particle toner image is formed on a primary image member (21), such as a photoconductor; electrostatically transferred to an intermediate transfer member (42); and then electrostatically transferred to a receiving sheet. The intermediate transfer member (42) includes a substrate, a compliant blanket (19), and a thin, hard overcoat (80) sectioned into small, discreet segments (81).