Self-assembly of a new series of quadruply hydrogen bonded heterotrimers driven by the donor–acceptor interaction
摘要:
This paper describes the self-assembly of a new series of heterotrimers in chloroform-d by utilizing the cooperative interaction of hydrogen bonding and donor-acceptor interaction. Compounds 1 and 11, in which an 2-ureido-4[1H]-pyrimidinone unit is connected to 34-crown-10 or 36-crown-10, were used as donor monomer, and 2 and 19, in which an 2-ureido-4[1H]-pyrimidinone unit is connected to NDI, were used as acceptor monomer, while linear compound 4, which contains two diamido-1,8-naphthyridines, was used as template. A large tri-p-(t-butyl)phenylmethoxyl group was introduced to 19 in order to compare its assembling behavior with that of 2. Mixing 4 with dimer 1 (.) 2 caused 1 (.) 2 to fully decompose and to afford 55% of 'in-in'-oriented heterotrimer 1 (.) 4 (.) 2. Adding 4 to the solution of 2 (.) 11 or 11 (.) 19 in chloroform-d also led to full dissociation of the dimers. However, in these systems the 'in-in'-arranged heterotrimer 2 (.) 4 (.) 11 or 11 (.) 4 (.) 19 could be produced exclusively. (c) 2005 Elsevier Ltd. All rights reserved.
Self-assembly of a new series of quadruply hydrogen bonded heterotrimers driven by the donor–acceptor interaction
摘要:
This paper describes the self-assembly of a new series of heterotrimers in chloroform-d by utilizing the cooperative interaction of hydrogen bonding and donor-acceptor interaction. Compounds 1 and 11, in which an 2-ureido-4[1H]-pyrimidinone unit is connected to 34-crown-10 or 36-crown-10, were used as donor monomer, and 2 and 19, in which an 2-ureido-4[1H]-pyrimidinone unit is connected to NDI, were used as acceptor monomer, while linear compound 4, which contains two diamido-1,8-naphthyridines, was used as template. A large tri-p-(t-butyl)phenylmethoxyl group was introduced to 19 in order to compare its assembling behavior with that of 2. Mixing 4 with dimer 1 (.) 2 caused 1 (.) 2 to fully decompose and to afford 55% of 'in-in'-oriented heterotrimer 1 (.) 4 (.) 2. Adding 4 to the solution of 2 (.) 11 or 11 (.) 19 in chloroform-d also led to full dissociation of the dimers. However, in these systems the 'in-in'-arranged heterotrimer 2 (.) 4 (.) 11 or 11 (.) 4 (.) 19 could be produced exclusively. (c) 2005 Elsevier Ltd. All rights reserved.