Porosity induced rigidochromism in platinum(ii) terpyridyl luminophores immobilized at silica composites

Autor(es)

Norton, Amie E. ^{[1, 2]} ; Zanoni, Kassio P. S. ^{[3, 4]} ; Dourges, Marie-Anne ^[5] ; Ravaro, Leandro P. ^[3] ; Abdolmaleki, Mahmood K. ^{[1, 6]} ; de Camargo, Andrea S. S. ^[3] ; Toupance, Thierry ^[5] ; Connick, William B. ^[1] ; Chatterjee, Sayandev ^[7]

Afiliação do(s) autor(es)

^[1] Univ Cincinnati, Dept Chem, Cincinnati, OH 45220 - USA

^[2] USDA ARS, Grain Qual & Struct, 1515 Coll Ave, Manhattan, KS 66503 - USA

^[3] Univ Sao Paulo, Inst Fis Sao Carlos, Lab Espectroscopia Mat Func LEMAF, BR-13566590 Sao Carlos, SP - Brazil

^[4] Univ Valencia, Mol Optoelect Devices MOED, Inst Ciencia Mol, Parque Cient, Paterna 46980 - Spain

^[5] Univ Bordeaux, CNRS, UMR 5255, Inst Mol Sci, 351 Cours Liberat, F-33405 Talence - France

^[6] Texas A&M Int Univ, Dept Biol & Chem, Laredo, TX 78041 - USA

^[7] ESSENCE Diagnost LLC, Livingston, NJ 07039 - USA

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF MATERIALS CHEMISTRY C; v. 9, n. 19 APR 2021.
• Citações Web of Science: 0

Resumo

Stimuli responsive composites consisting of inorganic or organometallic coordination substrates supported on porous platforms that integrate and improve the key features of both the substrate and platform, open the doorway to advanced multifunctional materials. This work presents a new class of stimuli responsive multifunctional materials based on platinum(ii) terpyridyl luminophores@silica composites. Presented here is how the intercalation of Pt(ii) salts with a planar architecture and sterically permitting terpyridyl ligands within meso or microporous silica support impacts Pt(ii) spectroscopies. The photophysics and luminescence properties of square-planar Pt(ii) salts are dictated by their intermolecular, non-covalent PtMIDLINE HORIZONTAL ELLIPSISPt interactions between the individual Pt(ii) units; a feature that has been explored in designing stimuli responsive materials. This work explores a novel methodology where the electronic structure and luminescence behavior of such salts are systematically varied through their intercalation within rigid silica frameworks. The intercalation of Pt(ii) complexes with varied degrees of non-covalent PtMIDLINE HORIZONTAL ELLIPSISPt interactions in the virgin form within meso-macroporous silica supports generates materials that show marked variation in their electronic structure and luminescence behavior compared to their virgin salts. Further, the spectroscopies show a systematic dependance on the mean pore size of the silica support. The X-ray powder diffraction and microscopy studies reveal these behaviors to be related to the perturbations in their long-range structural order, that gets reflected in their microcrystalline dimensions and particle morphologies. (AU)

• Processo FAPESP: 18/05152-7 - Camadas transportadoras de carga processáveis via métodos úmidos para aumento da eficiência de células solares de perovskitas
• Beneficiário: Kassio Papi da Silva Zanoni
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Pós-Doutorado
• Processo FAPESP: 16/07706-4 - Materiais luminescentes nanocristalinos: novas concepções químicas para conversão de energia e sustentabilidade
• Beneficiário: Kassio Papi da Silva Zanoni
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 13/07793-6 - CEPIV - Centro de Ensino, Pesquisa e Inovação em Vidros
• Beneficiário: Edgar Dutra Zanotto
• Modalidade de apoio: Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs