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| 1 | Particle-size-dependent upconversion luminescence of NaYF4:Yb,Er nanoparticles in organic solvents and water at different excitation power densities显示文摘A systematic study of the luminescence properties of monodisperse β-NaYF4: 20%Yb^3+,2%Er^3+ upconversion nanoparticles (UCNPs)with sizes ranging from 12--43nm is presented utilizing steady-state and time-resolved fluorometry. Special emphasis was dedicated to the absolute quantification of size-and environment-induced quenching of upconversion luminescence (UCL)by highenergy O-H and C-H vibrations from solvent and ligand molecules at different excitation power densities (P).In this context,the still-debated population pathways of the 4F9/2 energy level of Er^3+ were examined.Our results highlight the potential of particle size and P value for color tuning based on the pronounced near-infrared emission of 12nm UCNPs,which outweighs the red Er^3+emission under 'strongly quenched'conditions and accounts for over 50% of total UCL in water.Because current rate equation models do not include such emissions,the suitability of these models for accurately simulating all (de)population pathways of small UCNPs must be critically assessed.Furthermore,we postulate population pathways for the 4F9/2energy level of Er3.,Which correlate with the size-,environment-,and P-dependent quenching states of the higher Er^3+ energy levels. | Marco Kraft Christian Würth Verena Muhr Thomas Hirsch Ute Resch-Genger | 2018 | Nano Research2018，11，12： | 8 |
| 2 | Solidification of M2 High Speed Steel显示文摘 | Barkalow R H Kraft R W Goldstein J I | 1972 | Metallurgical Transactions1972，，3： | 1 |
| 3 | The effects of mining in NorthernRomania on the heavy metal distributionin sediments of the rivers Szamos and Tisza (Hungary)显示文摘 | KRAFT C VON TUMPLING W ZACHMANN DW | | 0，，03： | 1 |
| 4 | Microstructure of unidirectionally solidified A1-CuAIz eutectic显示文摘 | KRAFT R W ALBRIGHT D L | 1961 | Trans of the Metallurgical Society of Aime1961，221，： | 1 |
| 5 | Eperythrozoonosis in a tiger cat, an ocelot and a fishing cat显示文摘 | KRAFT W | 1974 | Kleintier Praxis1974，19，8： | 1 |
| 6 | Effect of low-dose ( 100 krad) ramma radiation on the microflora of vacuum - packaged ground pork with and without added sodium phosphates 显示文摘 | EhiobaR M Kraft A A MolinsH W | 1987 | J of Food Sci1987，52，6： | 1 |
| 7 | Glomerular podocytopathy in patients with systemic lupus erythematosus显示文摘 | Kraft S W Schwartz M M Korbet S M | 2005 | J Am Soc Nephrol2005，16，1： | 1 |
| 8 | The pharmacokinetics of nebulized nanocrystal budesortide suspension in healthy volunteers 显示文摘 | KRAFT W K STEIGER B BEUSSINK D | 2004 | J Clin Pharmacol2004，44，1： | 1 |
| 9 | Identifying the health conscious consumer显示文摘 | Kraft F B Goodell P W | 1993 | Journal of Health Care Marketing1993，，13： | 1 |
| 10 | New mode of DNA binding of multi-zinc finger transcription factors: dehaEF1 family members bind with two hands to two target sites显示文摘 | Remacle JE Kraft H Lerchncr W | 1999 | EMBO J1999，18，18： | 1 |
| 11 | Structure and elevated-tem- perature mechanical behavior of unidirectionally solidified Ni-Ni3Nb eutectic alloy显示文摘 | R T Quinn R W Kraft R W Herzberg | 1969 | Trans of ASM1969，62，： | 1 |
| 12 | A simple touch-down polymerase chain reaction for the detection of canine parvovirus and feline panleukopenia virus in feces显示文摘 | Schunck B Kraft W Truyen U | 1995 | J Virol Methods1995，55，： | 1 |
| 13 | Cysteinyl leukotrienes in allergic inflammation : Strategic target for therapy显示文摘 | Busse W Kraft M | 2005 | Chest2005，127，4： | 1 |
| 14 | The pharmacokinetics of nebulized nanocrystal budesonide suspension in healthy volunteers显示文摘 | Kraft W K Steiger B Beussink D | 2004 | J Clin Pharmacol2004，44，1： | 1 |
| 15 | The pharmaco- kinetics of nebulized nanocrystal budesonide suspension in healthy volunteers 显示文摘 | KRAFT W K STEIGER B BEUSSINK D | 2004 | J Clin Pharmacol2004，44，1： | 1 |
| 16 | The role of the basal ganglia in bimanual coordination显示文摘 | KRAFT E ANTHONY W C ALICE W F | 2007 | Brain Res2007，1151，3： | 1 |
| 17 | Stochastic Weigh- ted Particle Methods for Population Balance Equations显示文摘 | PATYERSON R I A WAGNER W KRAFT M | 2011 | Journal of Computational Physics2011，230，19： | 1 |
| 18 | Three-dimensional shrinkage behavior of green tapes derived from spherical-shaped powders: Experimental studies and numerical simulations显示文摘 | Fu Z W Polfer P Kraft T | 2015 | Journal of the European Ceramic Society2015，35，： | 1 |
| 19 | An associative neural network alternative to backpropagation显示文摘 | T W Millerm F H Glanz L G Kraft | 1990 | Proceedings of IEEE1990，78，10： | 1 |
| 20 | Cysteingl leukotrienes in allergic inflammation: strategic target for therapy显示文摘 | Busse W Kraft M | 2005 | Chest2005，127，： | 1 |
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