Red-Emitting Hybrid Based on Eu3+-dbm Complex Anchored on Silica Nanoparticles Surface by Carboxylic Acid for Biomarker Application
Abstract
:1. Introduction
2. Materials and Methods
2.1. Materials
2.2. Synthesis of Silica Nanoparticles
2.3. Amino-Functionalization
2.4. Carboxyl-Functionalization
2.5. Coordination of Eu3+ to -COO− Groups
2.6. Displacement of Coordination Water Molecules by dbm− Ligands
2.7. Instrumentation
3. Results and Discussion
3.1. Structure and Morphology
3.2. Luminescence
4. Conclusions
Supplementary Materials
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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S1 Sample | S1N Sample | |
---|---|---|
Groups | Group Quantity in mol% | Group Quantity in mol% |
Q4 | 68.04 ± 0.25 | 70.27 ± 0.40 |
Q3 | 27.99 ± 0.34 | 24.05 ± 0.63 |
Q2 | 3.97 ± 0.24 | 3.55 ± 0.43 |
T3 | - | 0.25 ± 0.06 |
T2 | - | 1.87 ± 0.17 |
Sample | τ/ms | Arad/s−1 | Anrad/s−1 | ||
---|---|---|---|---|---|
S1-[Eu] | 0.28 | 398 | 3225 | 11 | 3.5 |
S1-[Eu(dbm)] | 0.44 | 864 | 1387 | 38 | 1.6 |
System | [ref] | Ligands | Host | |
---|---|---|---|---|
Phen-Eu-DBM-SiO2/ZnO | [59] | dbm− and phen | ZnO/SiO2 | 55.3 |
Eu–DBM–SiO2/ZnO | [59] | dbm− | ZnO/SiO2 | 22.6 |
Sil2N-EDTAEu-dbm | [60] | EDTA modified and dbm− | Silica Gel (commercial) | 52.3 |
SiO2-APTES-cpa-Eu(DBM)3 | [61] | dbm− | Mesoporous silica | 41.1 |
Sample C | [62] | dbm− | ORMOSILs | 39.2 |
Eu(DBMSi-SBA-15)3phen | [63] | dbm− and phen | Mesoporous silica | 32.7 |
bpy-Eu-DBM-S16 | [64] | dbm− and 2,2′-bipyridine | Mesoporous silica | 7.7 |
SiO2-[Eu(SB)(dbm)y] | [12] | Schiff base and dbm− | Dense silica | 32.0 |
Eu(DBM-SBA-15)3PMAA | [65] | dbm− and PMAA2 polymer | Mesoporous silica | 10.5 |
SiO2@Eu-DBM | [66] | dbm− | Mesoporous silica | 14.0 |
Eu(ZnO-MAA-PHEMA-SBA-15)(DBM)3 | [67] | dbm− and silylated polymer | Mesoporous silica | 22.3 |
Fe3O4|SiO2|1NEu | [68] | EDTA modified and dbm− | Fe3O4@SiO2 | 36.0 |
Eu(Dbm-Si)3 Phen/SiO2 | [69] | dbm− and phen | Silica | 9.0 |
S1-[Eu(dbm)] | This study | dbm− and carboxylic acid | Dense silica | 38.4 |
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Santos, J.A.O.; Mutti, A.M.G.; Bispo-Jr, A.G.; Pires, A.M.; Lima, S.A.M. Red-Emitting Hybrid Based on Eu3+-dbm Complex Anchored on Silica Nanoparticles Surface by Carboxylic Acid for Biomarker Application. Materials 2020, 13, 5494. https://doi.org/10.3390/ma13235494
Santos JAO, Mutti AMG, Bispo-Jr AG, Pires AM, Lima SAM. Red-Emitting Hybrid Based on Eu3+-dbm Complex Anchored on Silica Nanoparticles Surface by Carboxylic Acid for Biomarker Application. Materials. 2020; 13(23):5494. https://doi.org/10.3390/ma13235494
Chicago/Turabian StyleSantos, João A. O., Alessandra M. G. Mutti, Airton G. Bispo-Jr, Ana M. Pires, and Sergio A. M. Lima. 2020. "Red-Emitting Hybrid Based on Eu3+-dbm Complex Anchored on Silica Nanoparticles Surface by Carboxylic Acid for Biomarker Application" Materials 13, no. 23: 5494. https://doi.org/10.3390/ma13235494