Issue 42, 2018

Different photochromic properties induced by lone pair–π interactions with varying strengths in two stereocontrolled self-assembly isomeric coordination polymers

Abstract

Two novel cadmium-based isomeric coordination polymers constructed from naphthalenediimide chromophoric components and aromatic dicarboxylic acids, [Cd(DPMNI)(m-BDC)]n (1) and [Cd(DPMNI)(p-BDC)]n (2) (DPMNI = N,N′-bis(4-pyridylmethyl)-1,4,5,8-naphthalenediimide, m-BDC2− = isophthalate, p-BDC2− = terephthalate) have been synthesized by solvothermal reactions and characterized systematically. Single-crystal X-ray diffraction analyses results indicate that compounds 1–2 possess the same basic building block, but show different 2D resultant constructions. The formation of non-covalent intermolecular interactions (CH–π, π–π, lone pair–π interactions) can not only generate 3D supramolecular structures, but also improve structural thermostabilities up to approximately 405 °C and 330 °C, according to their thermogravimetric analyses (TGA) results. Importantly, due to the stereocontrolled self-assembly of the isomeric coordination polymers, two kinds of lone pair–π interactions with varying strengths have been produced leading to different photochromic behaviors in 1–2. It is worth mentioning that the immediate photochromism of 1 is rare in NDI-based photochromic materials. Moreover, their photoluminescence properties have also been investigated to enrich the research on crystal photophysical properties.

Graphical abstract: Different photochromic properties induced by lone pair–π interactions with varying strengths in two stereocontrolled self-assembly isomeric coordination polymers

Supplementary files

Article information

Article type
Paper
Submitted
03 ذو الحجة 1439
Accepted
15 محرم 1440
First published
21 محرم 1440

CrystEngComm, 2018,20, 6821-6827

Different photochromic properties induced by lone pair–π interactions with varying strengths in two stereocontrolled self-assembly isomeric coordination polymers

C. Fu, G. Zhang, H. Wang, L. Li, J. Fu, Y. Sun and H. Zhang, CrystEngComm, 2018, 20, 6821 DOI: 10.1039/C8CE01367E

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements