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 editorsDonato, Loïc; Atoini, Youssef; Prasetyanto, Eko Adi; Chen, Pengkun; Rosticher, Céline; Bizzarri, Claudia; Rissanen, Kari; De Cola, Luisa

Journal or seriesHelvetica Chimica Acta

ISSN0018-019X

eISSN1522-2675

Publication year2018

Volume101

Issue number2

Pages rangee1700273

PublisherWiley-VCH

Publication countrySwitzerland

Publication languageEnglish

DOIhttps://doi.org/10.1002/hlca.201700273

Publication open accessNot 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%.


Keywordsluminescencenanoparticlessilicon

Free keywordscopper complex; silica; encapsulation; polymorph


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Ministry reportingYes

Reporting Year2018

JUFO rating1


Last updated on 2024-11-05 at 19:27