PMID- 35801397 OWN - NLM STAT- MEDLINE DCOM- 20220719 LR - 20220818 IS - 2576-6422 (Electronic) IS - 2576-6422 (Linking) VI - 5 IP - 7 DP - 2022 Jul 18 TI - Gas Cluster Ion Beams as a Versatile Soft-Landing Tool for the Controlled Construction of Thin (Bio)Films. PG - 3180-3192 LID - 10.1021/acsabm.2c00169 [doi] AB - Surface biofunctionalization with proteins is the key to many biomedical applications. In this study, a solvent-free method for the controlled construction of protein thin films is reported. Using large argon gas cluster ion beams, proteins are sputtered from a target (a pool of pure proteins), and collected on a chosen substrate, being nearly any solid material. Time-of-flight secondary ion mass spectrometry (ToF-SIMS) revealed the presence of intact protein molecules on the collectors. Furthermore, lowering the energy per atom in the cluster projectiles down to 1 eV/atom allowed more than 60% of bradykinin molecules to be transferred intact. This protein deposition method offers a precise control of the film thickness as the transferred protein quantity is proportional to the argon clusters ion dose reached for the transfer. This major feature enables building protein films from (sub)mono- to multilayers, without upper limitation of the thickness. A procedure was developed to measure the film thickness in situ the ToF-SIMS instrument. The versatility and potential of this soft-landing alternative for further applications is demonstrated on the one hand by building a protein thin film at the surface of paper, a substrate hardly compatible with solution-based adsorption methods. On the other hand, the possibility to achieve alternated multilayer buildup is demonstrated with the construction of a bilayer composed of bradykinin and Irganox, with the two layers well separated. These results lay the first stone toward original and complex multilayers that could previously not be considered with solution-based adsorption methods, and this regardless of the substrate nature. FAU - Delmez, Vincent AU - Delmez V AUID- ORCID: 0000-0002-9203-9919 AD - Institute of Condensed Matter and Nanosciences - Bio & Soft Matter, Universite catholique de Louvain, Place Louis Pasteur, 1 bte L4.01.10, B-1348 Louvain-la-Neuve, Belgium. FAU - Tomasetti, Benjamin AU - Tomasetti B AD - Institute of Condensed Matter and Nanosciences - Bio & Soft Matter, Universite catholique de Louvain, Place Louis Pasteur, 1 bte L4.01.10, B-1348 Louvain-la-Neuve, Belgium. FAU - Daphnis, Thomas AU - Daphnis T AD - Institute of Condensed Matter and Nanosciences - Bio & Soft Matter, Universite catholique de Louvain, Place Louis Pasteur, 1 bte L4.01.10, B-1348 Louvain-la-Neuve, Belgium. FAU - Poleunis, Claude AU - Poleunis C AD - Institute of Condensed Matter and Nanosciences - Bio & Soft Matter, Universite catholique de Louvain, Place Louis Pasteur, 1 bte L4.01.10, B-1348 Louvain-la-Neuve, Belgium. FAU - Lauzin, Clement AU - Lauzin C AUID- ORCID: 0000-0001-5044-5137 AD - Institute of Condensed Matter and Nanosciences - Bio & Soft Matter, Universite catholique de Louvain, Place Louis Pasteur, 1 bte L4.01.10, B-1348 Louvain-la-Neuve, Belgium. FAU - Dupont-Gillain, Christine AU - Dupont-Gillain C AUID- ORCID: 0000-0002-6153-4044 AD - Institute of Condensed Matter and Nanosciences - Bio & Soft Matter, Universite catholique de Louvain, Place Louis Pasteur, 1 bte L4.01.10, B-1348 Louvain-la-Neuve, Belgium. FAU - Delcorte, Arnaud AU - Delcorte A AUID- ORCID: 0000-0003-4127-8650 AD - Institute of Condensed Matter and Nanosciences - Bio & Soft Matter, Universite catholique de Louvain, Place Louis Pasteur, 1 bte L4.01.10, B-1348 Louvain-la-Neuve, Belgium. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20220708 PL - United States TA - ACS Appl Bio Mater JT - ACS applied bio materials JID - 101729147 RN - 67XQY1V3KH (Argon) RN - S8TIM42R2W (Bradykinin) SB - IM MH - Argon/chemistry MH - *Bradykinin MH - *Spectrometry, Mass, Secondary Ion/methods OTO - NOTNLM OT - (bio)functionalization OT - ToF-SIMS OT - gas cluster ion beam (GCIB) OT - multilayers OT - proteins OT - solvent-free deposition OT - thin films EDAT- 2022/07/09 06:00 MHDA- 2022/07/20 06:00 CRDT- 2022/07/08 04:23 PHST- 2022/07/09 06:00 [pubmed] PHST- 2022/07/20 06:00 [medline] PHST- 2022/07/08 04:23 [entrez] AID - 10.1021/acsabm.2c00169 [doi] PST - ppublish SO - ACS Appl Bio Mater. 2022 Jul 18;5(7):3180-3192. doi: 10.1021/acsabm.2c00169. Epub 2022 Jul 8.