In this study, we report a diaminomaleonitrile-functionalized dimethoxynaphthalene molecule (N-MN), with intramolecular charge transfer and aggregation-induced emission properties. Moreover, N-MN is a remarkable blue-shifted mechanochromic luminescent (ML) material. Upon external mechanical force, the orange emissive N-MN crystal is changed to yellow emission, accompanying with a blue-shifted fluorescence of 39 nm (from 607 to 568 nm). Single-crystal X-ray diffraction analysis indicates that the initial crystal of N-MN has a tight antiparallel packing mode with abundant intermolecular interactions. External mechanical force destroys the intermolecular interactions and partly changes the packing mode, resulting in the blue-shifted emission. This study provides further understanding of the relationship between intermolecular interactions, molecular packing mode and the blue-shifted emission properties.

在这项研究中，我们报告了一种二氨基马来腈官能化的二甲氧基萘分子（N-MN），具有分子内电荷转移和聚集诱导的发射特性。此外，N-MN是一种出色的蓝移机械变色发光（ML）材料。在外力作用下，橙色的N-MN发射晶体变为黄色发射，伴随着39 nm的蓝移荧光（从607到568 nm）。X射线单晶衍射分析表明，N-MN的初始晶体具有紧密的反平行堆积模式和丰富的分子间相互作用。外部机械力破坏了分子间的相互作用，并部分改变了堆积模式，从而导致发射蓝移。这项研究进一步了解了分子间相互作用，分子堆积模式和蓝移发射特性之间的关系。