申请人:——
公开号:US20040110029A1
公开(公告)日:2004-06-10
Asymmetric dendrimers are disclosed. These are of two types (a) one which comprises a light emitting dendrimer having the formula: CORE-[DENDRITE
1
]
n
[DENDRITE
2
]
m
in which CORE represents an atom or group, n and m, which may be the same or different, each represent an integer of at least 1, each DENDRITE
1
, which may be the same or different when n is greater than 1, and each DENDRITE
1
, which may be the same or different when m is greater than 1, represent dendritic structures, at least one of said structures being fully conjugated and comprising aryl and/or heteroaryl groups and, optionally, vinyl and/or acetylenyl groups connected via sp
2
or sp hybridized carbon atoms of said ((hetero)aryl, vinyl and acetylenyl groups, and at least one branching point and/or link between the branching points in DENDRITE
1
being different from those in DENDRITE
2
, CORE terminating in the single bond which is connected to a sp
2
hybridized (ring) carbon atom of the first (hetero)aryl group to which more than one conjugated dendritic branch is attached, said ring carbon atom forming part of said fully conjugated DENDRITE
1
or DENDRITE
2
and CORE terminating at the single bond to the first branching point for the other of said DENDRITE
1
or DENDRITE
2
, at least one of the CORE, DENDRITE
1
and DENDRITE
2
being luminescent and (b) one which comprises a light emitting dendrimer having the formula: CORE-[DENDRITE]
n
in which CORE represents an atom or group, n represents an integer of at least 1, each DENDRITE, which may be the same or different, represents an inherently at least partially conjugated dendritic structure which comprises aryl and/or heteroaryl and, optionally, vinyl and/or acetylenyl groups, connected via sp
2
or sp hybridized carbon atoms of said (hetero)aryl, vinyl and acetylenyl groups, and wherein the links between at least one pair of adjacent branching points in said DENDRITE are different such that if two links are to be regarded as different then one said link must comprise at least one aryl, heteroaryl, vinyl or acetylenyl group which is not present in the other of said two links, CORE terminating in the single bond which is connected to a sp
2
hybridized (ring) carbon atom of the first (hetero)aryl group to which more than one dendritic branch is attached, said ring carbon atom forming part of said DENDRITE, the CORE and/or DENDRITE being luminescent.
本发明涉及非对称树状分子,包括两种类型:(a) 一种包括具有以下公式的发光树状分子:CORE-[DENDRITE1]n[DENDRITE2]m,其中CORE代表原子或基团,n和m分别表示至少为1的整数,且可以相同或不同,每个DENDRITE1表示树状结构,当n大于1时可以相同或不同,每个DENDRITE2表示树状结构,当m大于1时可以相同或不同,至少其中一个结构是完全共轭的,包括芳基和/或杂芳基和(或)乙烯基和/或乙炔基,通过所述((杂)芳基,乙烯基和乙炔基的sp2或sp杂化碳原子连接,并且DENDRITE1中至少有一个分支点和/或链接与DENDRITE2中的不同,CORE在连接到第一个连接了多个共轭树状分支的第一个(杂)芳基的sp2杂化(环)碳原子处终止,该环碳原子是完全共轭的DENDRITE1或DENDRITE2的一部分,并且CORE在连接到另一个DENDRITE1或DENDRITE2的第一个分支点的单键处终止,其中CORE、DENDRITE1和DENDRITE2中至少有一个是发光的;(b) 一种包括具有以下公式的发光树状分子:CORE-[DENDRITE]n,其中CORE代表原子或基团,n表示至少为1的整数,每个DENDRITE表示固有的至少部分共轭的树状结构,包括芳基和/或杂芳基和(或)乙烯基和/或乙炔基,通过所述(杂)芳基、乙烯基和乙炔基的sp2或sp杂化碳原子连接,并且所述DENDRITE中至少有一对相邻分支点之间的链接不同,因此如果要将两个链接视为不同,则其中一个链接必须包括另一个链接中不存在的至少一个芳基、杂芳基、乙烯基或乙炔基,CORE在连接到第一个连接了多个树状分支的第一个(杂)芳基的sp2杂化(环)碳原子处终止,该环碳原子是DENDRITE的一部分,CORE和/或DENDRITE是发光的。