A compound having formula (Ph
3
C)
m
Ar(R
1
)
j
(OR
2
)
n
, wherein Ph represents a phenyl group, Ar is an aromatic ring system having from six to twenty carbon atoms, R
1
and R
2
independently are C
1
-C
18
alkyl or C
4
-C
18
heteroalkyl, m is one or two, j is an integer from one to four and n is an integer from one to three.
化合物的
化学式为(Ph3C)mAr(R1)j(OR2)n,其中Ph代表苯基,Ar是具有六到二十个碳原子的芳香环系统,R1和R2分别独立地为C1-C18烷基或C4-C18杂烷基,m为一或二,j为1至4的整数,n为1至3的整数。