Name: chemical vapor deposition of an organic magnet, vanadium tetracyanoethylene
Uploaded: 2015-07-03T16:00:00
Description: Watch this Scientific Journal Video about Chemical Vapor Deposition of an Organic Magnet, Vanadium Tetracyanoethylene at JoVE.com

Dette arbejde blev støttet af NSF Grant No. DMR-1207243, NSF MRSEC programmet (DMR-0.820.414), DOE Grant No. DE-FG02-03ER46054 og OSU-Instituttet for Materialeforskning. Forfatterne anerkender NanoSystems Laboratory ved Ohio State University, og teknisk bistand fra CY Kao og CY Chen.

1. Syntese og Udarbejdelse af prækursorer <ol><li> Fremstilling af [Et 4N] [V (CO) 6] 23 <ol><li> I en nitrogen handskerum, skåret 1,88 g natriummetal i ~ 40 stykker og blandes med 14,84 g anthracen i 320 ml vandfrit tetrahydrofuran (THF) i en 1 liters, tre-halset rundbundet kolbe. ADVARSEL: Både natrium metal og tetrahydrofuran er meget brandfarlige. </li><li> Opløsningen omrøres i 4,5 timer ved stuetemperatur under en nitrogenatmosfære, indtil en dybblå opløsning af NA...

<ol>
	<li>Yoo, J. W., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Spin+injection/detection+using+an+organic-based+magnetic+semiconductor.">Spin injection/detection using an organic-based magnetic semiconductor.</a> Nat. Mater. 9, 638-642 (2010).</li><li>Li, B., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Room-temperature+organic-based+spin+polarizer.">Room-temperature organic-based spin polarizer.</a> Appl. Phys. Lett. 99, 153503 (2011).</li><li>Li, B., Kao, C. Y., Yoo, J. W., Prigodin, V. N., Epstein, A. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Magnetoresistance+in+an+All-Organic-Based+Spin+Valve.">Magnetoresistance in an All-Organic-Based Spin Valve.</a> Adv. Mater. 23, 3382-3386 (2011).</li><li>Fang, L., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Electrical+Spin+Injection+from+an+Organic-Based+Ferrimagnet+in+a+Hybrid+Organic-Inorganic+Heterostructure.">Electrical Spin Injection from an Organic-Based Ferrimagnet in a Hybrid Organic-Inorganic Heterostructure.</a> Phys. Rev. Lett. 106, 156602 (2011).</li><li>Yu, H., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Ultra-narrow+ferromagnetic+resonance+in+organic-based+thin+films+grown+via+low+temperature+chemical+vapor+deposition.">Ultra-narrow ferromagnetic resonance in organic-based thin films grown via low temperature chemical vapor deposition.</a> Appl. Phys. Lett. 105, 012407 (2014).</li><li>Manriquez, J. M., Yee, G. T., McLean, R. S., Epstein, A. J., Miller, J. S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+Room-Temperature+Molecular+Organic+Based+Magnet.">A Room-Temperature Molecular Organic Based Magnet.</a> Science. 252, 1415-1417 (1991).</li><li>Pokhodnya, K. I., Epstein, A. J., Miller, J. S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=.">.</a> Thin-film V TCNE (x) magnets. Adv. Mater. 12, 410-413 (2000).</li><li>Carlegrim, E., Kanciurzewska, A., Nordblad, P., Fahlman, M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Air-stable+organic-based+semiconducting+room+temperature+thin+film+magnet+for+spintronics+applications.">Air-stable organic-based semiconducting room temperature thin film magnet for spintronics applications.</a> Appl. Phys. Lett. 92, 163308 (2008).</li><li>Kao, C. Y., Yoo, J. W., Min, Y., Epstein, A. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Molecular+Layer+Deposition+of+an+Organic-Based+Magnetic+Semiconducting+Laminate.">Molecular Layer Deposition of an Organic-Based Magnetic Semiconducting Laminate.</a> ACS Appl. Mater. Interfaces. 4, 137-141 (2012).</li><li>Miller, J. S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Oliver+Kahn+Lecture:+Composition+and+structure+of+the+V+TCNE+(x)+(TCNE+=+tetracyanoethylene)+room-temperature,+organic-based+magnet+-+A+personal+perspective.">Oliver Kahn Lecture: Composition and structure of the V TCNE (x) (TCNE = tetracyanoethylene) room-temperature, organic-based magnet - A personal perspective.</a> Polyhedron. 28, 1596-1605 (2009).</li><li>Haskel, D., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Local+structural+order+in+the+disordered+vanadium+tetracyanoethylene+room-temperature+molecule-based+magnet.">Local structural order in the disordered vanadium tetracyanoethylene room-temperature molecule-based magnet.</a> Phys. Rev. B. 70, 054422 (2004).</li><li>Prigodin, V. N., Raju, N. P., Pokhodnya, K. I., Miller, J. S., Epstein, A. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Spin-Driven+Resistance+in+Organic-Based+Magnetic+Semiconductor+V[TCNE]x.">Spin-Driven Resistance in Organic-Based Magnetic Semiconductor V[TCNE]x.</a> Adv. Mater. 14, 1230-1233 (2002).</li><li>Yoo, J. W., Edelstein, R. S., Lincoln, D. M., Raju, N. P., Epstein, A. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Photoinduced+magnetism+and+random+magnetic+anisotropy+in+organic-based+magnetic+semiconductor+V(TCNE)(x)+films,+for+x+similar+to+2.">Photoinduced magnetism and random magnetic anisotropy in organic-based magnetic semiconductor V(TCNE)(x) films, for x similar to 2.</a> Phys. Rev. Lett. 99 (15), 157205 (2007).</li><li>Cimpoesu, F., Frecus, B., Oprea, C. I., Panait, P., G&#238;r&#355;u, M. A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Disorder,+exchange+and+magnetic+anisotropy+in+the+room-temperature+molecular+magnet+V[TCNE]x+&#8211;+A+theoretical+study.">Disorder, exchange and magnetic anisotropy in the room-temperature molecular magnet V[TCNE]x &#8211; A theoretical study.</a> Computational Materials Science. 91, 320-328 (2014).</li><li>Raju, N. P., Prigodin, V. N., Pokhodnya, K. I., Miller, J. S., Epstein, A. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=High+field+linear+magnetoresistance+in+fully+spin-polarized+high-temperature+organic-based+ferrimagnetic+semiconductor+V(TCNE)(x)+films,+x+similar+to+2.">High field linear magnetoresistance in fully spin-polarized high-temperature organic-based ferrimagnetic semiconductor V(TCNE)(x) films, x similar to 2.</a> Synth. Met. 160, 307-310 (2010).</li><li>Raju, N. P., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Anomalous+magnetoresistance+in+high-temperature+organic-based+magnetic+semiconducting+V(TCNE)(x)+films.">Anomalous magnetoresistance in high-temperature organic-based magnetic semiconducting V(TCNE)(x) films.</a> J. Appl. Phys. 93, 6799-6801 (2003).</li><li>Yoo, J. W., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Multiple+photonic+responses+in+films+of+organic-based+magnetic+semiconductor+V(TCNE)(x),+x+similar+to+2.">Multiple photonic responses in films of organic-based magnetic semiconductor V(TCNE)(x), x similar to 2.</a> Phys. Rev. Lett. 97, 247205 (2006).</li><li>Yoo, J. W., Edelstein, R. S., Raju, N. P., Lincoln, D. M., Epstein, A. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Novel+mechanism+of+photoinduced+magnetism+in+organic-based+magnetic+semiconductor+V(TCNE)(x),+x+similar+to+2.">Novel mechanism of photoinduced magnetism in organic-based magnetic semiconductor V(TCNE)(x), x similar to 2.</a> J. Appl. Phys. 103, 07B912 (2008).</li><li>Caro, D., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=CVD-grown+thin+films+of+molecule-based+magnets.">CVD-grown thin films of molecule-based magnets.</a> Chem. Mat. 12, 587-589 (2000).</li><li>Erickson, P. K., Miller, J. S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Thin+film+Co+TCNE+(2)+and+VyCo1-y+TCNE+(2)+magnetic+materials.">Thin film Co TCNE (2) and VyCo1-y TCNE (2) magnetic materials.</a> J. Magn. Magn. Mater. 324 (2), 2218-2223 (2012).</li><li>Valade, L., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Thin+films+of+molecular+materials+grown+on+silicon+substrates+by+chemical+vapor+deposition+and+electrodeposition.">Thin films of molecular materials grown on silicon substrates by chemical vapor deposition and electrodeposition.</a> J. Low Temp. Phys. 142, 393-396 (2006).</li><li>Casellas, H., de Caro, D., Valade, L., Cassoux, P. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+new+chromium-based+molecular+magnet+grown+as+a+thin+film+by+CVD.">A new chromium-based molecular magnet grown as a thin film by CVD.</a> Chem. Vapor Depos. 8, 145-147 (2002).</li><li>Barybin, M. V., Pomije, M. K., Ellis, J. E. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Highly+reduced+organometallics+-+42.+A+new+method+for+the+syntheses+of+V(CO)(6)+(-)+and+V(PF3)(6)+(-)+involving+anthracenide+mediated+reductions+of+VCl3(THF)(3).">Highly reduced organometallics - 42. A new method for the syntheses of V(CO)(6) (-) and V(PF3)(6) (-) involving anthracenide mediated reductions of VCl3(THF)(3).</a> Inorg. Chim. Acta. 269, 58-62 (1998).</li><li>Froning, I. H. M., Lu, Y., Epstein, A. J., Johnston-Halperin, E. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Thin-film+Encapsulation+of+the+Air-Sensitive+Organic+Ferrimagnet+Vanadium+Tetracyanoethylene.">Thin-film Encapsulation of the Air-Sensitive Organic Ferrimagnet Vanadium Tetracyanoethylene.</a> Appl. Phys. Lett. 106, 122403 (2015).</li><li>Pokhodnya, K. I., Bonner, M., Miller, J. S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Parylene+protection+coatings+for+thin+film+V+TCNE+(x)+room+temperature+magnets.">Parylene protection coatings for thin film V TCNE (x) room temperature magnets.</a> Chem. Mat. 16, 5114-5119 (2004).</li><li>Shima Edelstein, R., Yoo, J. -. W., Raju, N. P., Bergeson, J. D., Pokhodnya, K. I., Miller, J. S., Epstein, A. J., Tessler, N., Arias, A. C., Burgi, L., Emerson, J. 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Electron Devices. 57, 153-156 (2010).</li><li>Lungenschmied, C., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Flexible,+long-lived,+large-area,+organic+solar+cells.">Flexible, long-lived, large-area, organic solar cells.</a> Solar Energy Materials and Solar Cells. 91, 379-384 (2007).</li><li>Lu, Y., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Thin-Film+Deposition+of+an+Organic+Magnet+Based+on+Vanadium+Methyl+Tricyanoethylenecarboxylate.">Thin-Film Deposition of an Organic Magnet Based on Vanadium Methyl Tricyanoethylenecarboxylate.</a> Adv. Mater. 26, 7632-7636 (2014).</li></ol>

De vigtigste parametre for V [TCNE] x ~ 2 deposition omfatter temperatur, bæregas flow, tryk og forholdet mellem forstadier. Fordi kemisk dampudfældning set-up er ikke kommercielt tilgængelig disse parametre skal være optimeret til hvert system. En tidligere undersøgelse af Shima et al. Viste, at temperaturen har den største indvirkning på sublimering satsen for TCNE precursor 26. Temperaturen kan ændres både med værdien indstillet på temperaturen controlleren og også ...

Den organiske baserede ferrimagnetiske halvleder vanadium tetracyanoethylen (V [TCNE] x, x ~ 2) udviser stuetemperatur magnetiske bestilling og lover fordelene ved økologiske materialer til magnetoelectronic applikationer, såsom fleksibilitet, lave produktionsomkostninger, og kemisk justerbarhed. Tidligere undersøgelser har påvist funktionalitet i spintronic enheder, herunder hybrid organisk / uorganisk 1,2 og alle-økologiske spin-ventiler 3, og som spin polarisator i en aktiv organisk / uorganisk halvleder heterostruktur 4. Derudover har V [TCNE] x ~ 2 viste lovende for optagelse i høj frekvens elektronik på grund af sin ekstremt smalt ferromagnetisk resonans linewidth 5. Der er fire forskellige metoder, som er blevet oprettet til at syntetisere V [TCNE] x ~ 06-09 februar. V [TCNE] x ~ 2 blev først syntetiseret som powder i dichlormethan via omsætning af TCNE og V (C6 H6) 6. Disse pulvere udviste den første rumtemperatur magnetiske bestilling observeret i et organisk materiale. Imidlertid pulverform af dette materiale er yderst følsom luft, hvilket begrænser dens anvendelse i tyndfilm-enheder. I 2000 en kemisk dampudfældning (CVD) metode blev etableret for at skabe V [TCNE] x ~ 2 tynde film 7. For nylig fysisk dampudfældning (PVD) 8 og molekylær lag udfældning (MLD) 9 er også blevet anvendt til at fabrikere tynde film. PVD metode kræver et system, ultrahøjt vakuum (UHV), og både PVD og MLD fremgangsmåder kræver meget lange gange for at vokse film tykkere end 100 nm, hvorimod CVD filmene let kan deponeres i tykkelser i området fra 30 nm til flere mikrometer. Ud af de mange forskellige tykkelser til rådighed med CVD-metoden, har omfattende undersøgelser kun givet optimerede film, der konsekvent viser høj qVALITET magnetiske egenskaber, herunder: smal ferromagnetisk resonans (FMR) linjebredde (1,5 g), høj Curie temperatur (600 K), og skarpe magnetisk skifte 5. Magnetisk bestilling i V [TCNE] x ~ 2 tynde film forløber via en utraditionel rute. SQUID magnetometri målinger viser stærk lokal magnetisk bestilling, men fraværet af røntgen- diffraktionstoppe og uden særlige træk transmissionselektronmikroskopi (TEM) 10 morfologi afslører en mangel på langtrækkende strukturel orden. , Udvidet X-ray absorption fin-struktur (EXAFS) studerer dog 11 viser, at hver vanadium ion er oktaedrisk koordineret med seks forskellige TCNE molekyler, hvilket indikerer en robust lokal strukturel orden med en vanadium-nitrogenbinding længde på 2,084 (5) Å. Magnetisme skyldes en antiferromagnetiske udveksling kobling mellem uparrede spin i TCNE - radikale anioner, som er fordelt over hele TCNE -molekylet, og de ​​spins på V 2 + -ioner, hvilket fører til en lokal ferrimagnetiske bestilling med T C ~ 600 K til optimerede film 5. Ud over at udstille stuetemperatur magnetisk bestilling, V [TCNE] x ~ 2 film halvledende med 0,5 eV båndgab 12. Andre egenskaber af note omfatter mulige sperimagnetism under en indefrysning temperatur på ~ 150 K 13,14, anomal positiv magnetisk resistans 12,15,16 og foto-induceret magnetisme 13,17,18. CVD fremgangsmåde til syntese af V [TCNE] x ~ 2 tynde film er kompatibel med en række substrater på grund af lav temperatur (&lt;60 ° C) og konform deposition. Tidligere undersøgelser har vist vellykkede aflejring af V [TCNE] x ~ 2 på begge stive og fleksible substrater 7. Endvidere er denne deposition teknik egner sig til tuning gennem ændring af prækursorer og growth parametre. 19-22 Mens protokollen her viste giver de mest optimerede film til dato, er der gjort betydelige fremskridt med at forbedre nogle af de filmegenskaberne siden opdagelsen af denne metode, og yderligere gevinster kan være muligt.

<table border="0" cellpadding="0" cellspacing="0">
	<tbody>
		<tr>
			<td></td>
			<td></td>
			<td></td>
			<td>Equipment</td>
		</tr>
		<tr>
			<td>Nitrogen Glovebox</td>
			<td>Vacuum Atmospheres</td>
			<td>Omni</td>
			<td>steps done in nitrogen glovebox can also be done in an argon glovebox</td>
		</tr>
		<tr>
			<td>1 L three-neck round bottom flask</td>
			<td>Corning</td>
			<td>4965A-1L</td>
			<td></td>
		</tr>
		<tr>
			<td>500 mL round bottom flask</td>
			<td>Sigma Aldrich</td>
			<td>64678</td>
			<td></td>
		</tr>
		<tr>
			<td>Turbo vacuum pumping station</td>
			<td>Agilent Varian</td>
			<td>G8701A-011-037</td>
			<td></td>
		</tr>
		<tr>
			<td>Glass Stopcock</td>
			<td>Kontes</td>
			<td>185000-2440</td>
			<td></td>
		</tr>
		<tr>
			<td>Glass two way connecting tube</td>
			<td>Corning</td>
			<td>8940-24</td>
			<td>Corning Pyrex(R) 105 degree Angled Tube Adapter with Two-Way 24/40 Standard Taper Joint</td>
		</tr>
		<tr>
			<td>Coldfinger</td>
			<td></td>
			<td></td>
			<td>Custom part made by OSU chemistry glass shop</td>
		</tr>
		<tr>
			<td>Argon Glovebox</td>
			<td>Vacuum Atmospheres</td>
			<td>Nexus I</td>
			<td></td>
		</tr>
		<tr>
			<td>Hot plate stirrer</td>
			<td>Corning</td>
			<td>6795</td>
			<td></td>
		</tr>
		<tr>
			<td>Thermoeletric cooler</td>
			<td>Advanced Thermoelectric</td>
			<td>TCP-50</td>
			<td></td>
		</tr>
		<tr>
			<td>Temperature controller</td>
			<td>Advanced Thermoelectric</td>
			<td>TLZ10</td>
			<td>for TE cooler</td>
		</tr>
		<tr>
			<td>Power supply</td>
			<td>Advanced Thermoelectric</td>
			<td>PS-145W-12V&#160;</td>
			<td>for TE cooler and temperature controller</td>
		</tr>
		<tr>
			<td>Temperature controller</td>
			<td>J-Kem&#160; Scientific</td>
			<td>Model 150</td>
			<td>For heating coil</td>
		</tr>
		<tr>
			<td>Heating wire</td>
			<td>Pelican Wire Company</td>
			<td>Nichrome 60</td>
			<td></td>
		</tr>
		<tr>
			<td>Custom glassware pieces</td>
			<td></td>
			<td></td>
			<td>Made by OSU Chemistry glass shop</td>
		</tr>
		<tr>
			<td>Vacuum pump</td>
			<td>BOC Edwards</td>
			<td>XDS-5</td>
			<td>Connected to the CVD set-up</td>
		</tr>
		<tr>
			<td>Flow meter</td>
			<td>Gilmont</td>
			<td>GF-2260</td>
			<td></td>
		</tr>
		<tr>
			<td>Micrometer valve</td>
			<td>Gilmont</td>
			<td>7300</td>
			<td>Controls flow of argon over TCNE</td>
		</tr>
		<tr>
			<td>Micrometer valve</td>
			<td>Gilmont</td>
			<td>7100</td>
			<td>Controls flow of argon over&#160; V(CO)6</td>
		</tr>
		<tr>
			<td>Tubing</td>
			<td>Tygon</td>
			<td>R3603</td>
			<td>1/8 in walls, connected between valves and meter</td>
		</tr>
		<tr>
			<td>3-way Stopcock</td>
			<td>Nalgene</td>
			<td>6470</td>
			<td>used to adjust the flow rates</td>
		</tr>
		<tr>
			<td>Pressure gauge</td>
			<td>Matheson</td>
			<td>63-4105</td>
			<td>connects to the top of Figure 1 part A</td>
		</tr>
		<tr>
			<td>SQUID magnetometer</td>
			<td>Quantum Design</td>
			<td>MPMS-XL</td>
			<td></td>
		</tr>
		<tr>
			<td>EPR</td>
			<td>Bruker</td>
			<td>Elexsys</td>
			<td></td>
		</tr>
		<tr>
			<td>PPMS</td>
			<td>Quantum Design</td>
			<td>14T PPMS</td>
			<td></td>
		</tr>
		<tr>
			<td>Sourcemeter</td>
			<td>Keithely&#160;</td>
			<td>2400</td>
			<td></td>
		</tr>
		<tr>
			<td></td>
			<td></td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td></td>
			<td></td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td></td>
			<td></td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td></td>
			<td></td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td></td>
			<td></td>
			<td></td>
			<td>Materials</td>
		</tr>
		<tr>
			<td>Sodium metal</td>
			<td>Sigma Aldrich</td>
			<td>262714</td>
			<td></td>
		</tr>
		<tr>
			<td>Anthracene</td>
			<td>Sigma Aldrich</td>
			<td>141062</td>
			<td></td>
		</tr>
		<tr>
			<td>Anhydrous tetrahydrofuran</td>
			<td>Sigma Aldrich</td>
			<td>186562</td>
			<td></td>
		</tr>
		<tr>
			<td>Vanadium(III) chloride tetrahydrofuran complex</td>
			<td>Sigma Aldrich</td>
			<td>395382</td>
			<td></td>
		</tr>
		<tr>
			<td>Carbon monoxide gas</td>
			<td>OSU stores</td>
			<td>98610</td>
			<td></td>
		</tr>
		<tr>
			<td>Tetraethylammonium bromide</td>
			<td>Sigma Aldrich</td>
			<td>241059</td>
			<td></td>
		</tr>
		<tr>
			<td>Phosphoric acid</td>
			<td>Sigma Aldrich</td>
			<td>79622</td>
			<td></td>
		</tr>
		<tr>
			<td>Methanol</td>
			<td>Sigma Aldrich</td>
			<td>14262</td>
			<td></td>
		</tr>
		<tr>
			<td>Silcone oil</td>
			<td>Sigma Aldrich</td>
			<td>146153</td>
			<td></td>
		</tr>
		<tr>
			<td>Copper pellets</td>
			<td></td>
			<td></td>
			<td>Cut from spare copper wire</td>
		</tr>
		<tr>
			<td>Tetracyanoethylene</td>
			<td>Sigma Aldrich</td>
			<td>T8809</td>
			<td></td>
		</tr>
		<tr>
			<td>Glass slides</td>
			<td>Gold Seal</td>
			<td>3010</td>
			<td></td>
		</tr>
		<tr>
			<td>Activated Charcoal</td>
			<td>Sigma Aldrich</td>
			<td>242276</td>
			<td></td>
		</tr>
	</tbody>
</table>

chemical vapor deposition of an organic magnet, vanadium tetracyanoethylene

Nylige fremskridt inden for organiske materialer har givet enheder såsom organiske lysdioder (OLED), som har fordele, som ikke findes i traditionelle materialer, herunder lave omkostninger og mekanisk fleksibilitet. På samme måde ville det være fordelagtigt at udvide brugen af ​​organiske i højfrekvente elektronik og afledte baserede elektronik. Dette arbejde præsenterer en syntetisk fremgangsmåde til væksten af tynde film af rumtemperaturen organiske ferrimagnet, vanadium tetracyanoethylen (V [TCNE] x, x ~ 2) ved lav temperatur deposition kemisk damp (CVD). Den tynde film dyrkes ved &lt;60 ° C, og kan rumme en lang række materialer, herunder, men ikke begrænset til, silicium, glas, teflon og fleksible substrater. Den konform deposition er befordrende for pre-mønstret og tredimensionale strukturer samt. Derudover kan denne teknik give film med tykkelser i området fra 30 nm til flere mikrometer. Nylige fremskridti optimering af vækst film skaber en film, hvis egenskaber, såsom højere Curie temperatur (600 K), forbedret magnetisk homogenitet, og smalle ferromagnetisk resonans line-bredde (1,5 G) viser lovende for en lang række applikationer i spintronik og mikrobølge elektronik.

Den første og letteste metode til at bestemme om en aflejring er vellykket, er at gøre en visuel inspektion af filmene. Filmen skal vises mørk lilla med et spejl finish, der er ens på tværs af substrater. Hvis der er pletter på overfladen af substratet, hvor der ikke er nogen V [TCNE] x ~ 2 eller det er lysere i farven, så er dette sandsynligvis på grund af tilstedeværelsen af opløsningsmidler eller andre urenheder på substratoverfladen. Derudover bør filmen være uigennemsigtig. Medmindr...

Watch this Scientific Journal Video about Chemical Vapor Deposition of an Organic Magnet, Vanadium Tetracyanoethylene at JoVE.com

Chemical Vapor Deposition of an Organic Magnet, Vanadium Tetracyanoethylene

Vi præsenterer syntesen af det organisk-baserede ferrimagnet vanadium tetracyanoethylen (V [TCNE] x, x ~ 2) via lav deposition temperatur kemisk damp (CVD). Denne optimerede opskrift giver en stigning i Curie temperatur fra 400 K til over 600 K og en dramatisk forbedring i magnetisk resonans egenskaber.

Kemisk Vapor Deposition af en organisk Magnet, Vanadium tetracyanoethylen

Recent progress in the field of organic materials has yielded devices such as organic light emitting diodes (OLEDs) which have advantages not found in ...

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Chemistry

Preparation of Hydrophobic Metal-Organic Frameworks via Plasma Enhanced Chemical Vapor Deposition of Perfluoroalkanes for the Removal of Ammonia

Udarbejdelse af Hydrofobe Metal-Organic Frameworks via Plasma Enhanced Chemical Vapor Deposition af perfluoralkaner til fjernelse af ammoniak

Plasma enhanced chemical vapor deposition (PECVD) of perfluoroalkanes has long been studied for tuning the wetting properties of surfaces. For high ...

High-pressure Sapphire Cell for Phase Equilibria Measurements of CO2/Organic/Water Systems

High-pressure Sapphire Cell for Phase Equilibria Measurements of CO2/Organic/Water Systems

Højtryks-Sapphire Cell til faseligevægte Målinger af CO<sub&gt; 2.</sub&gt; / Organiske / Water Systems

The high pressure sapphire cell apparatus was constructed to visually determine the composition of multiphase systems without physical sampling. ...

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Analyse af flygtige og oxidationsfølsomme Forbindelser med kold indsugningssystem og Electron Impact massespektrometri

This video presents a protocol for the mass spectrometrical analysis of volatile and oxidation sensitive compounds using electron impact ionization. The ...

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Udarbejdelse af Makroporøse Epitaksial Quartz Film på silicium af kemisk opløsning Deposition

This work describes the detailed protocol for preparing piezoelectric macroporous epitaxial quartz films on silicon(100) substrates. This is a three-step ...

Synthesis and Characterization of Supramolecular Colloids

Syntese og karakterisering af supramolekylære Colloids

Control over colloidal assembly is of utmost importance for the development of functional colloidal materials with tailored structural and mechanical ...

Epitaxial Growth of Perovskite Strontium Titanate on Germanium via Atomic Layer Deposition

Epitaksial dyrkning af Perovskite strontiumtitanat på Germanium via Atomic Layer Deposition

Atomic layer deposition (ALD) is a commercially utilized deposition method for electronic materials. ALD growth of thin films offers thickness control and ...

Fizzy Extraction of Volatile Organic Compounds Combined with Atmospheric Pressure Chemical Ionization Quadrupole Mass Spectrometry

Fizzy Ekstraktion af flygtige organiske forbindelser kombineret med atmosfærisk tryk kemisk ionisering Quadrupole massespektrometri

Chemical analysis of volatile and semivolatile compounds dissolved in liquid samples can be challenging. The dissolved components need to be brought to ...

Aerosol-assisted Chemical Vapor Deposition of Metal Oxide Structures: Zinc Oxide Rods

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Whilst columnar zinc oxide (ZnO) structures in the form of rods or wires have been synthesized previously by different liquid- or vapor-phase routes, ...

Controlled Photoredox Ring-Opening Polymerization of O-Carboxyanhydrides Mediated by Ni/Zn Complexes

Controlled Photoredox Ring-Opening Polymerization of O-Carboxyanhydrides Mediated by Ni/Zn Complexes

Kontrolleret Photoredox Ring-åbning polymerisering af O- Carboxyanhydrides medieret af Ni/Zn komplekser

Here, we describe an effective protocol that combines photoredox Ni/Ir catalysis with the use of a Zn-alkoxide for efficient ring-opening polymerization, ...