| Title: | Simultaneous Occurrence of Vapochromism and Vapoluminescence in Formaldehyde-Responsive Amino-Functionalized Copper(I) Polymorphic Coordination Polymers |
| Author(s): | Tunsrichon S; Chainok K; Promarak V; Nalaoh P; Youngme S; Boonmak J; |
| Address: | "Materials Chemistry Research Center, Department of Chemistry, Faculty of Science, Khon Kaen University, Muang, Khon Kaen 40002, Thailand. Thammasat University Research Unit in Multifunctional Crystalline Materials and Applications (TU-MCMA), Faculty of Science and Technology, Thammasat University, Pathum Thani 12121, Thailand. School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC), Wangchan 21210, Rayong, Thailand" |
| DOI: | 10.1021/acs.inorgchem.2c01421 |
| ISSN/ISBN: | 1520-510X (Electronic) 0020-1669 (Linking) |
| Abstract: | "The use of vapor-responsive chromic materials in sensing applications for the detection of harmful volatile organic chemicals is rapidly expanding. Herein, four new amino-functionalized Cu(I) coordination polymers of [CuI(pyt-NH(2))](n) (1) and (2) and [CuSCN(pyt-NH(2))](n) (3) and (4) (where pyt-NH(2) = 2-amino-5-(4-pyridinyl)-1,3,4-thiadiazole) were successfully synthesized. Single-crystal X-ray diffraction analysis reveals that 1 and 2 are iodo-based polymorphs, while 3 and 4 are thiocyanato-based polymorphs. They possess densely diverse crystalline architectures decorated by uncoordinated amino groups as a binding site. Also, 1-4 show a variety of color and luminescence based on the structural diversity. Remarkably, 1 and 2 undergo the change of color and naked-eye solid-state luminescence in response to formaldehyde (FA) vapor, demonstrating simultaneous vapochromism and vapoluminescence. The chromic Cu(I) coordination polymers in this work present for the first time dual-mode vapochromism and vapoluminescence in a highly selective response to FA vapor. The responsive mechanism has been clarified by Fourier transform infrared spectroscopy (FT-IR), electrospray ionization mass spectrometry (ESI-MS), (1)H nuclear magnetic resonance (NMR), powder X-ray diffraction (PXRD), and luminescence lifetime measurements, which reveal carbinolamine formation via the specific reaction between FA and the active amino groups of coordinated pyt-NH(2). The carbinolamine formation can trigger the structural transformation of 1 and 2, leading to the concurrently selective vapochromism and vapoluminescence induced by FA vapor" |
| Keywords: | "*Copper/chemistry Formaldehyde Polymers/chemistry Spectroscopy, Fourier Transform Infrared *Volatile Organic Compounds;" |
| Notes: | "MedlineTunsrichon, Sujitra Chainok, Kittipong Promarak, Vinich Nalaoh, Phattananawee Youngme, Sujittra Boonmak, Jaursup eng 2022/07/22 Inorg Chem. 2022 Aug 1; 61(30):11734-11745. doi: 10.1021/acs.inorgchem.2c01421. Epub 2022 Jul 21" |
