MALDI Recipes Results Page

Synthetic Polymer MALDI Recipes Results

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Record 1 of 3

Record #:

284

Class ID:

2.1

Class Name:

acrylic polymer

Polymer:

poly(butyl acrylate)

Matrix:

trans-2-[3-(4-tert-butylphenyl)-2-methyl-2-propenylidene]malononitrile (2-[(2E)-3-(4-tert-Butylphenyl)-2-methylprop-2-enylidene]malononitrile (DCTB)) (300364-84-5)

Salt:

sodium trifluoracetate (NaTFA)

Solvent:

tetrahydrofuran (THF)

Recipe

DCTB (trans-2-[3-(4-tert-butylphenyl)-2-methyl-2-propenylidene]malononitrile) was chosen as the matrix. Sodium trifluoracetate (Aldrich, 98%) was added as the cationic ionization agent. The matrix was dissolved in THF at a concentration of 40 mg/mL. Sodium trifluoracetate was added to THF at a concentration of 1 mg/mL. The dissolved polymer concentration in THF was approximately 1 mg/mL. In a typical MALDI-TOF-MS experiment, the matrix, salt, and polymer solutions were premixed in the ratio 5 µL sample:5 µL matrix:0.5 µL salt. Approximately 0.5 µL of the obtained mixture was hand-spotted on the target plate.

Venkatesh, R.; Staal, B.B.P.; Klumperman, B.; Monteiro, M.J., Characterization of 3- and 4-Arm Stars from Reactions of Poly(Butyl Acrylate) RAFT and ATRP Precursors, Macromolecules, 37, 21, 2004, 7906.

doi:10.1021/ma049460t

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Record 2 of 3

Record #:

1120

Class ID:

2.1

Class Name:

acrylic polymer

Polymer:

poly(butylacrylate)

Matrix:

trans-2-[3-(4-tert-butylphenyl)-2-methyl-2-propenylidene]malononitrile (300364-84-5)

Salt:

Solvent:

methanol

Recipe

For MALDI-MS analysis of untreated polymers, PEO or PBA solutions (4.0 mg mL−1 in THF) were mixed with DCTB (11.1 mg mL−1 in THF) and NaI (0.5 mg mL−1 in methanol) or KI (0.5 mg mL−1 in methanol) at a matrix/polymer/salt molar ratio of 2000:1:100. PS solutions (4.0 mg mL−1 in THF) were mixed with DCTB (11.1 mg mL−1 in THF) and AgTFA (10.1 mg mL−1 in THF) at a matrix/polymer/salt molar ratio of 1000:1:100. MALDI samples were prepared using the dried droplet method, where a 1 μL aliquot of the liquid mixture was deposited onto the sample plate and allowed to air-dry.

Barrere, C.; Chendo, C.; Phan, T.N.T.; Monnier, V.; Trimaille, T.; Humbel, S.; Viel, S.; Gigmes, D.; Charles, L., Successful MALDI-MS Analysis of Synthetic Polymers with Labile End-Groups: the Case of Nitroxide-Mediated Polymerization Using the Mama-Sg1 Alkoxyamine, Chemistry-A European Journal, 18, 25, 2012, 7916-7924.

doi:10.1002/chem.201200239

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Record 3 of 3

Record #:

1137

Class ID:

2.1

Class Name:

acrylic polymer

Polymer:

poly(butyl acrylate)

Matrix:

dithranol (1143-38-0)

Salt:

N/A

Solvent:

tetrahydrofuran

Recipe

THF solutions of 20 mg mL−1 dithranol and 2 mg mL−1 polymer were prepared, ultrasonicated to disperse the particles, and mixed in the ratio 15 μL:15 μL

Chirowodza, H.; Hartmann, P.C.; Pasch, H., MALDI-TOF MS Analysis of the Grafting of Clay Nanoparticles with Poly(Butyl Acrylate), Macromolecular Chemistry and Physics, 213, 8, 2012, 847-857.

doi:10.1002/macp.201100671

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