Name: MALDI-ToF MS-methode voor de karakterisering van synthetische polymeren met variërende dispersiteit en eindgroepen (Video) | JoVE Journal
Uploaded: 2025-10-03T13:00:00.000+00:00
Duration: 6 min 16 s
Description: Leer synthetische polymeren karakteriseren met MALDI-ToF MS voor polymerchemie met variërende dispersiteit en eindgroepen. Dit protocol helpt onderzoekers bij nauwkeurige massaspectrometrische analyse.

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<table><tbody><tr><td>1-(3-Dimethylaminopropyl)-3-ethylcarbodiimide Hydrochloride</td><td>TCI chemicals</td><td>D1601</td><td>https://www.tcichemicals.com/US/en/p/D1601</td></tr><tr><td>1,1,1-Tris(hydroxymethyl)propaan</td><td>Millipore Sigma</td><td>148083</td><td>https://www.sigmaaldrich.com/US/en/product/aldrich/148083?srsltid=AfmBOoqaMzcy1xravp1h2QE 0myfY5gjuEBfOIv2o882Wb _xcB4Ol4CMW</td></tr><tr><td>1,5,7-Triazabicyclo[4.4.0]dec-5-een</td><td>Millipore Sigma</td><td>345571</td><td>https://www.sigmaaldrich.com/US/en/product/aldrich/345571?srsltid=AfmBOooLQXIhWaMnO63nE xu-Y5MJoJID6RJiby0NXyu DHOxXYjle_kMT</td></tr><tr><td>1,6-Hexanedithionol 98% (HDT)&nbsp;</td><td>TCI</td><td>H0334</td><td>https://www.tcichemicals.com/US/en/p/H0334</td></tr><tr><td>2-(4-hydroxyfenylazo)benzoëzuur) (HABA)</td><td>Millipore Sigma</td><td>H5126</td><td>https://www.sigmaaldrich.com/US/en/product/aldrich/h5126</td></tr><tr><td>2,2-Bis(hydroxymethyl)propaanzuur</td><td>Millipore Sigma</td><td>106615</td><td>https://www.sigmaaldrich.com/US/en/product/aldrich/106615?srsltid=AfmBOopCRoa1N_UiDK 56NKhDKdlAN8feUrMxVYhul Muz2en6NYEGIh4b</td></tr><tr><td>2,2-Dimethoxy-2-fenylacetofenon 99% (DMPA)&nbsp;</td><td>Sigma-Aldrich</td><td>196118</td><td>https://www.sigmaaldrich.com/US/en/product/aldrich/196118?srsltid=AfmBOoqVTif6KNwIr6A -bIgnXbkrvWKIUNH6qOsc RseQLNVKi0DMWPb-</td></tr><tr><td>2,5-Dihydroxybenzoëzuur (DHB)</td><td>Millipore Sigma</td><td>149357</td><td>https://www.sigmaaldrich.com/US/en/product/aldrich/149357</td></tr><tr><td>4-(Dimethylamino)pyridine</td><td>Millipore Sigma</td><td>522821</td><td>https://www.sigmaaldrich.com/US/en/search/522821?focus=products&amp;page=1&amp;perpage= 30&amp;sort=relevance&amp;term=522821 &amp;type=product&nbsp;</td></tr><tr><td>6-Bromohexaanzuur</td><td>Millipore Sigma</td><td>150452</td><td>https://www.sigmaaldrich.com/US/en/search/6-bromohexaanzuur?focus=products&amp;page=1 &amp;perpage=30&amp;sort=relevance&amp;term= 6-Bromohexaanzuur&amp;type=product&nbsp;</td></tr><tr><td>Benzaldehyde dimethylacetaal</td><td>Millipore Sigma</td><td>226076</td><td>https://www.sigmaaldrich.com/US/en/product/aldrich/226076?srsltid= AfmBOorbjP7zD9MO3g5Xk LL3rNZ02PhfkXoRfe3EjRK7 TrqJ-kEOrTCN</td></tr><tr><td>Benzoëzuur</td><td>Millipore Sigma</td><td>242381</td><td>https://www.sigmaaldrich.com/US/en/product/sial/242381?srsltid=AfmBOook_iIcMnwuB3e _j-KetQyyHJ6Qq86jSK8 ZVxC3BorQgkO8Xg5I&nbsp;</td></tr><tr><td>Bruker UltraFlextreme&nbsp;</td><td>Bruker Daltonics</td><td></td><td>https://www.bruker.com/en/products-and-solutions/mass-spectrometry/maldi-tof/ultraflextreme.html</td></tr><tr><td>Chloroform</td><td>Fisher Scientific</td><td>AA32614K7</td><td>https://www.fishersci.com/shop/products/chloroform-acs-99-8-thermo-scientific/AA32614K7 ?searchHijack=true&amp;searchTerm= chloroform-acs-99-8-thermo-scientific &amp;searchType=Rapid&amp;matchedCatNo =AA32614M6</td></tr><tr><td>Dithranol, BP, 98,5-101% (DT)</td><td>Fisher Scientific</td><td>18-602-270</td><td>https://www.fishersci.com/shop/products/dithranol-bp-98-5-101-spectrum-chemical/18602270</td></tr><tr><td>Ethylene brassylaat</td><td>Millipore Sigma</td><td>W354309</td><td>https://www.sigmaaldrich.com/US/en/product/aldrich/w354309?utm_source=google&amp;utm_medium= cpc&amp;utm_campaign=8692675663&amp;utm _content=86098110623&amp;gad_source= 1&amp;gclid=CjwKCAiApY-7BhBjEiwAQMr rEdJTcKN5TEFkP1uHvRlVign3lwg2cj5 _spBUCrfi6exZ3Ur5sJkARxoCfWsQ AvD_BwE&nbsp;</td></tr><tr><td>Galvinoxyl, vrij radicaal</td><td>Millipore Sigma</td><td>G307</td><td>https://www.sigmaaldrich.com/US/en/product/aldrich/g307?srsltid= AfmBOopoWGDMXtLk5Erf0rVyl 7j442uyg8rIWkfBjhHZ2z0dDktH3y8-</td></tr><tr><td>Methanol</td><td>Fisher Scientific</td><td>A456</td><td>https://www.fishersci.com/shop/products/methanol-optima-lc-ms-grade-thermo-scientific/A4564</td></tr><tr><td>Palladium, 10% op koolstof, Type 487, droog</td><td>Fisher Scientific</td><td>AAA1201206</td><td>https://www.fishersci.com/shop/products/palladium-10-carbon-type-487-dry-thermo-scientific-1/AAA1201206#?keyword=palladium%20on%20carbon</td></tr><tr><td>Poly(ethyleen&nbsp;glycol) monomethylether 350&nbsp;Mn&nbsp;(MeO-PEG-OH 360)&nbsp;</td><td>Fisher Scientific</td><td>AA4156022</td><td>https://www.fishersci.com/shop/products/polyethylene-glycol-monomethylether-350-thermo-scientific/AA4156022</td></tr><tr><td>Kaliumtrifluoracetaat (KTFA)</td><td>Millipore Sigma</td><td>

maldi-tof ms-methode voor de karakterisering van synthetische polymeren met variërende dispersiteit en eindgroepen

MALDI-ToF MS Method for the Characterization of Synthetic Polymers with Varying Dispersity and End Groups

MALDI-ToF MS-methode voor de karakterisering van synthetische polymeren met variërende dispersiteit en eindgroepen

Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-ToF MS) is an effective analytical tool for characterizing synthetic ...

maldi-tof-ms-method-for-characterization-synthetic-polymers-with

Research

JoVE Journal

Chemistry

Een snelle manier is beschreven om inzicht te krijgen in de structuur van de polysacchariden in een extracellulaire matrix. De methode maakt gebruik van de specificiteit van glycosylhydrolases en de gevoeligheid van massaspectrometrie waarmee minieme hoeveelheden van de materialen worden geanalyseerd. Deze techniek is aan te passen aan direct worden gebruikt op weefsel zelf.

Oligo Mass Profiling (Olimp) van extracellulaire polysacchariden

Dithranol (DT, 1,8-dihydroxy-9 ,10-dihydroanthracen-9-on) is eerder gerapporteerd als een MALDI matrix voor weefsel beeldvorming van kleine moleculen, protocollen voor het gebruik van DT voor de MALDI beeldvorming van endogene lipiden op de oppervlak van het weefsel secties door positieve-ion MALDI-MS op een ultrahoge resolutie quadrupool-FTICR instrument worden hier gegeven.

Dithranol als een matrix voor Matrix Assisted Laser desorptie / ionisatie Imaging op een Fourier transform ion cyclotron resonantie spectrometrie

Een protocol voor de synthese en karakterisering van diffuse beweging van cyclische polymeren op de single molecule-niveau wordt gepresenteerd.

Synthese van cyclische polymeren en karakterisering van hun Diffusive Motion in de Smelt staat bij de Single Molecule niveau

Er wordt een potentiële algemene methode gepresenteerd voor de synthese van in water oplosbare multimetallische peptidische arrays die een vooraf bepaalde sequentie van metaalcentra bevatten.

Synthese van een water-oplosbaar metaal-organisch complex Array

Hier presenteren we een protocol voor te bereiden en te visualiseren secundaire structuren (bijvoorbeeld vezels, toroïdale architecturen en nano- bolletjes) verkregen uit schroeflijnvormige polycarbodiimides. De morfologie gekenmerkt door zowel atomaire kracht microscopie (AFM) en scanning elektronenmicroscopie (SEM) bleek afhankelijk moleculaire structuur, de concentratie en het oplosmiddel van keuze.

Zelf monteren van morfologieën Verkregen uit rechte polycarbodiimide copolymeren en hun triazoolderivaten

Een protocol voor de laser matrix-bijgewoonde desorptie ionisatie tijd van de vlucht de karakterisering van de Spectrometrie van de massa (MALDI-TOF MS) van synthetische polymeren wordt beschreven, met inbegrip van de optimalisering van de bereiding van de monsters, spectrale acquisitie en data-analyse.

Karakterisering van synthetische polymeren via Matrix bijgestaan Laser desorptie ionisatie tijd van de Spectrometrie van de massa van de vlucht (MALDI-TOF)

Het doel van dit protocol is om polymerisatie te initiëren met behulp van dynamische zwavel bindingen in poly (S-divinylbenzeen) bij milde temperaturen (90 °C) zonder oplosmiddelen te gebruiken. Terpolymers worden gekenmerkt door GPC, DSC en 1H NMR, en getest op veranderingen in de oplosbaarheid.

Synthese van terpolymers bij milde temperaturen met dynamische zwavel bindingen in poly (S-divinylbenzeen)

Een protocol voor de synthese en karakterisering van zelfgeassembleerde metaal-organische raamwerkmonolagen wordt geleverd met behulp van polymeergeënte, metaal-organische raamwerk (MOF) kristallen. De procedure toont aan dat polymeer-geënte MOF-deeltjes zichzelf kunnen assembleren op een lucht-watergrensvlak, wat resulteert in goed gevormde, vrijstaande monolaagstructuren, zoals blijkt uit scanning-elektronenmicroscopiebeeldvorming.

Synthese en karakterisering van zelf-geassembleerde metaal-organische raamwerk monolagen met behulp van polymeer-gecoate deeltjes

Hier presenteren we een gedetailleerd protocol voor de afgifte van O-glycanen uit mucines en de daaropvolgende ontzouting, permethylering en analyse met behulp van MALDI-TOF-massaspectrometrie.

Profilering van gepermethyleerde mucine O-glycanen met behulp van matrix-geassisteerde laserdesorptie/ionisatie Time-of-flight massaspectrometrie

Nauwkeurige massa meting betekent een belangrijke stap tijdens het onderzoek van eiwitten. Matrix-geassisteerde laser desorptie / ionisatie (MALDI) massaspectrometrie (MS) kan worden gebruikt voor deze vaststelling en van zijn belangrijkste voordeel is de tolerantie voor zouten, detergentia en verontreinigingen. Hier tonen we een toegankelijke benadering voor de analyse van eiwitten groter dan 100 kDa door MALDI-MS.

Matrix-laserdesorptie / ionisatie Time of Flight (MALDI-TOF) massaspectrometrische analyse van intacte eiwitten groter dan 100 kDa

Leer synthetische polymeren karakteriseren met MALDI-ToF MS voor polymerchemie met variërende dispersiteit en eindgroepen. Dit protocol helpt onderzoekers bij nauwkeurige massaspectrometrische analyse.

MALDI-ToF MS-methode voor de karakterisering van synthetische polymeren met variërende dispersiteit en eindgroepen

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