Fluorescent Molecular Scaffold-Building Mononuclear Iron(II) Complexes Display Synergistic Spin Crossover and Fluorescence Behaviors

IF 3.6 2区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Crystal Growth & Design Pub Date : 2026-10-07 Epub Date: 2026-09-25 DOI:10.1021/acs.cgd.6c00990

Xin-Xin Wang, Peng Chen, Shu-Man Gao, Xu Wang, Xue-Ru Wu, Zhi-Kun Liu, Feng Shao

{"title":"Fluorescent Molecular Scaffold-Building Mononuclear Iron(II) Complexes Display Synergistic Spin Crossover and Fluorescence Behaviors","authors":"Xin-Xin Wang, Peng Chen, Shu-Man Gao, Xu Wang, Xue-Ru Wu, Zhi-Kun Liu, Feng Shao","doi":"10.1021/acs.cgd.6c00990","DOIUrl":null,"url":null,"abstract":"Magnetic fluorescent bifunctional spin crossover (SCO) materials show switchable magnetic and optical properties and have attracted continuous research interest due to their potential application in magneto-optical switches and multi-sensors. Herein, we report two octahedral Fe(II) SCO complexes, namely, [Fe2(1-isoTQA)2(NCS)4]·CH2Cl2 (1·CH2Cl2) and its desolvated sample, Fe2(1-isoTQA)2(NCS)4 (1d), based on the fluorescent molecular scaffold ligand of tris(1-isoquinolylmethyl)amine (1-isoTQA). Magnetic studies revealed that 1·CH2Cl2 exhibits two-step SCO behavior, while 1d displays one-step, incomplete SCO behavior. Temperature-dependent fluorescence measurements indicated that the emission intensity of 1d can be observed to increase synchronously with the spin transition. Moreover, the temperature-dependent structural analyses and theoretical calculations confirmed that the emission intensity can be modulated by the spin state through the energy-transfer mechanism.","PeriodicalId":34,"journal":{"name":"Crystal Growth & Design","volume":"26 19","pages":"7830–7838"},"PeriodicalIF":3.6000,"publicationDate":"2026-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Crystal Growth & Design","FirstCategoryId":"92","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acs.cgd.6c00990","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2026/9/25 0:00:00","PubModel":"Epub","JCR":"Q2","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

Magnetic fluorescent bifunctional spin crossover (SCO) materials show switchable magnetic and optical properties and have attracted continuous research interest due to their potential application in magneto-optical switches and multi-sensors. Herein, we report two octahedral Fe(II) SCO complexes, namely, [Fe₂(1-isoTQA)₂(NCS)₄]·CH₂Cl₂ (1·CH₂Cl₂) and its desolvated sample, Fe₂(1-isoTQA)₂(NCS)₄ (1d), based on the fluorescent molecular scaffold ligand of tris(1-isoquinolylmethyl)amine (1-isoTQA). Magnetic studies revealed that 1·CH₂Cl₂ exhibits two-step SCO behavior, while 1d displays one-step, incomplete SCO behavior. Temperature-dependent fluorescence measurements indicated that the emission intensity of 1d can be observed to increase synchronously with the spin transition. Moreover, the temperature-dependent structural analyses and theoretical calculations confirmed that the emission intensity can be modulated by the spin state through the energy-transfer mechanism.

查看原文本刊更多论文

荧光分子构建支架单核铁（II）配合物显示协同自旋交叉和荧光行为

磁荧光双功能自旋交叉（SCO）材料具有可切换的磁性和光学特性，由于其在磁光开关和多传感器中的潜在应用而引起了人们的持续研究兴趣。本文报道了基于三（1-异喹啉甲基）胺（1- isotqa）荧光分子支架配体的两个八面体Fe(II) SCO配合物，即[Fe2(1- isotqa)2(NCS)4]·CH2Cl2（1·CH2Cl2）及其脱溶样品Fe2(1- isotqa)2(NCS)4 （1d）。磁性研究表明，1·CH2Cl2表现出两步SCO行为，而1d表现出一步不完全SCO行为。温度依赖性荧光测量表明，1d的发射强度随自旋跃迁同步增加。此外，温度相关的结构分析和理论计算证实了自旋态可以通过能量转移机制调节发射强度。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Crystal Growth & Design 化学-材料科学：综合

CiteScore

6.30

自引率

10.50%

发文量

650

审稿时长

1.9 months

期刊介绍： The aim of Crystal Growth & Design is to stimulate crossfertilization of knowledge among scientists and engineers working in the fields of crystal growth, crystal engineering, and the industrial application of crystalline materials. Crystal Growth & Design publishes theoretical and experimental studies of the physical, chemical, and biological phenomena and processes related to the design, growth, and application of crystalline materials. Synergistic approaches originating from different disciplines and technologies and integrating the fields of crystal growth, crystal engineering, intermolecular interactions, and industrial application are encouraged.