A1 Journal article (refereed)
Selective encapsulation and enhancement of the emission properties of a luminescent Cu(I) complex in mesoporous silica (2018)
Donato, L., Atoini, Y., Prasetyanto, E. A., Chen, P., Rosticher, C., Bizzarri, C., Rissanen, K., & De Cola, L. (2018). Selective encapsulation and enhancement of the emission properties of a luminescent Cu(I) complex in mesoporous silica. Helvetica Chimica Acta, 101(2), e1700273. https://doi.org/10.1002/hlca.201700273
JYU authors or editors
Publication details
All authors or editors: Donato, Loïc; Atoini, Youssef; Prasetyanto, Eko Adi; Chen, Pengkun; Rosticher, Céline; Bizzarri, Claudia; Rissanen, Kari; De Cola, Luisa
Journal or series: Helvetica Chimica Acta
ISSN: 0018-019X
eISSN: 1522-2675
Publication year: 2018
Volume: 101
Issue number: 2
Pages range: e1700273
Publisher: Wiley-VCH
Publication country: Switzerland
Publication language: English
DOI: https://doi.org/10.1002/hlca.201700273
Publication open access: Not open
Publication channel open access:
Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/57192
Abstract
We describe a synthetic approach to prepare new luminescent silica‐based materials through the encapsulation of a neutral copper(I) complex inside the pores of mesoporous silica nanoparticles (MSN). The copper(I) complex is present, in the solid state, as two polymorphs, blue and yellow emissive, and in solution it shows a pale yellow color that is also mirrored by an emission in the yellow‐orange region of the electromagnetic spectrum. The X‐ray structures of single crystals have been obtained for both polymorphs. The complex encapsulation in MSN is achieved by its entrapment inside micelles followed by condensation of the silica source. Interestingly, the entrapment leads to the isolation of only one species. Indeed, the compound inside the MSN exhibits remarkable photophysical properties, showing an intense blue emission in solution and in the solid state. Powder X‐ray diffraction of the hybrid materials proves that the complex entrapped in MSN is indeed the blue polymorph. The confinement provides not only a method to isolate only one form of the complex, but also a certain rigidity, more stability of the system by protection of the complex from undesirable oxidation, leading to a highly emissive material possessing a photoluminescence quantum yield of 65%.
Keywords: luminescence; nanoparticles; silicon
Free keywords: copper complex; silica; encapsulation; polymorph
Contributing organizations
Related projects
- Weak Interactions as Structural Elements in Self-assembling Molecular Systems
- Rissanen, Kari
- Research Council of Finland
- Weak Interactions as Structural Elements in Self-assembling Molecular Systems (research costs)
- Rissanen, Kari
- Research Council of Finland
Ministry reporting: Yes
VIRTA submission year: 2018
JUFO rating: 1