摘要:
Using a compound represented by a general formula (A)m-L-(D)n, a light-emitting device having a high emission efficiency can be provided. L is an (m+n)-valent aromatic linking group; A is a group having a positive Hammett's σ p value; D is a group having a negative Hammett's σ p value; m is an integer of 1 or more; n is an integer of 2 or more. Two of plural D's differ in point of the substituent condition at specific aromatic rings.
摘要:
Using a compound that contains a structure where a carbazol-9-yl group substituted with a perfluoroalkyl group at the 2-position and the 7-position and a structural unit having a positive Hammett constant σ p (but excluding an aromatic hydrocarbon group) bond to each other directly or via a π-conjugated linking group, wherein at least a part of the carbazol-9-yl group and at least a part of the structural unit having a positive Hammett constant σ p and, if any, the π-conjugated linking group form a π-electron conjugated system, an organic light emitting device having a high emission efficiency can be provided.
摘要:
An organic-inorganic perovskite satisfying E T T1 and E S - E T ≤ 0.1 eV has a high emission efficiency. E S represents the excited singlet energy level in emission of an inorganic component, E T represents the excited triplet energy level in emission of an inorganic component, E T1 represents the excited triplet energy level in emission of an organic component.
摘要:
A compound represented by the following general formula is excellent in light emission properties. R 1 and R 2 each independently represent a fluorinated alkyl group, D represents a substituent in which Hammett's σ p value is negative, and A represents a substituent in which Hammett's σ p value is positive.
摘要:
An organic electroluminescent device containing a cathode, an anode, and one or more organic layers containing plural light emitting materials between the cathode and the anode, wherein the organic electroluminescent device is a multiple wavelength light emitting organic electroluminescent device emitting light from the plural light emitting materials, and which is designed so that light that has the shortest wavelength contains delayed fluorescent light can improve light emission efficiency of a short wavelength light and color tone and has a large degree of freedom in design and a simple structure.
摘要:
A compound represented by the general formula (1) is useful as a light-emitting material. In the general formula (1), from 0 to 1 of R 1 to R 5 represents a cyano group, from 1 to 5 of R 1 to R 5 represent a group represented by the general formula (2) etc., and the balance of R 1 to R 5 represent a hydrogen atom or a substituent other than above. R 11 to R 20 represent a hydrogen atom or a substituent, L 12 represents a substituted or unsubstituted arylene group or a substituted or unsubstituted heteroarylene group.
摘要翻译:由通式(1)表示的化合物可用作发光材料。 在通式(1)中,R 1〜R 5的0〜1表示氰基,R 1〜R 5的1〜5表示由通式(2)表示的基团等,余量 R 1〜R 5表示氢原子或除上述以外的取代基。 R 11〜R 20表示氢原子或取代基,L 12表示取代或未取代的亚芳基或取代或未取代的亚杂芳基。
摘要:
An organic electroluminescence element in which a compound represented by the general formula below is used in a light-emitting layer exhibits a high emission efficiency and is inexpensive to provide. At least one of R 1 to R 8 and R 17 represent an electron-donating group and the others represent a hydrogen atom; at least one of R 9 to R 16 represent an electron-withdrawing group that does not have an unshared electron pair at the ±-position thereof and the others represent a hydrogen atom; Z represents a single bond or >C=Y; Y represents O, S, C (CN) 2 or C(COOH) 2 ; provided that when Z is a single bond, then at least one of R 9 to R 16 is an electron-withdrawing group that does not have an unshared electron pair at the ±-position thereof.
摘要:
A compound represented by the general formula (1) is useful as a light-emitting material. R 1 , R 3 , and R 5 each represent a cyano group, or R 1 , R 2 , R 4 , and R 5 each represent a cyano group; and the others of R 1 to R 6 each represent a group represented by any one of the following general formula (4), etc.
摘要翻译:由通式(1)表示的化合物可用作发光材料。 R 1,R 3和R 5各自表示氰基,或者R 1,R 2,R 4和R 5各自表示氰基; R 1〜R 6中的任一个表示由下述通式(4)中的任一个表示的基团等。