PMID- 34170665
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20211129
LR  - 20211129
IS  - 1520-5126 (Electronic)
IS  - 0002-7863 (Linking)
VI  - 143
IP  - 26
DP  - 2021 Jul 7
TI  - Light-Mediated Synthesis and Reprocessing of Dynamic Bottlebrush Elastomers under 
      Ambient Conditions.
PG  - 9866-9871
LID - 10.1021/jacs.1c03686 [doi]
AB  - We introduce a novel grafting-through polymerization strategy to synthesize 
      dynamic bottlebrush polymers and elastomers in one step using light to construct 
      a disulfide-containing backbone. The key starting material-alpha-lipoic acid (LA)-is 
      commercially available, inexpensive, and biocompatible. When installed on the 
      chain end(s) of poly(dimethylsiloxane) (PDMS), the cyclic disulfide unit derived 
      from LA polymerizes under ultraviolet (UV) light in ambient conditions. 
      Significantly, no additives such as initiator, solvent, or catalyst are required 
      for efficient gelation. Formulations that include bis-LA-functionalized 
      cross-linker yield bottlebrush elastomers with high gel fractions (83-98%) and 
      tunable, supersoft shear moduli in the  approximately 20-200 kPa range. An added advantage of 
      these materials is the dynamic disulfide bonds along each bottlebrush backbone, 
      which allow for light-mediated self-healing and on-demand chemical degradation. 
      These results highlight the potential of simple and scalable synthetic routes to 
      generate unique bottlebrush polymers and elastomers based on PDMS.
FAU - Choi, Chungryong
AU  - Choi C
FAU - Self, Jeffrey L
AU  - Self JL
FAU - Okayama, Yoichi
AU  - Okayama Y
FAU - Levi, Adam E
AU  - Levi AE
FAU - Gerst, Matthias
AU  - Gerst M
AD  - BASF SE, Polymers for Adhesives, Carl-Bosch-Strasse 38, 67056 Ludwigshafen am 
      Rhein, Germany.
FAU - Speros, Joshua C
AU  - Speros JC
AD  - BASF Corporation California Research Alliance, Berkeley, California 94720, United 
      States.
FAU - Hawker, Craig J
AU  - Hawker CJ
AUID- ORCID: 0000-0001-9951-851X
FAU - Read de Alaniz, Javier
AU  - Read de Alaniz J
AUID- ORCID: 0000-0003-2770-9477
FAU - Bates, Christopher M
AU  - Bates CM
AUID- ORCID: 0000-0002-1598-794X
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PT  - Research Support, U.S. Gov't, Non-P.H.S.
DEP - 20210625
PL  - United States
TA  - J Am Chem Soc
JT  - Journal of the American Chemical Society
JID - 7503056
SB  - IM
EDAT- 2021/06/26 06:00
MHDA- 2021/06/26 06:01
CRDT- 2021/06/25 17:09
PHST- 2021/06/26 06:00 [pubmed]
PHST- 2021/06/26 06:01 [medline]
PHST- 2021/06/25 17:09 [entrez]
AID - 10.1021/jacs.1c03686 [doi]
PST - ppublish
SO  - J Am Chem Soc. 2021 Jul 7;143(26):9866-9871. doi: 10.1021/jacs.1c03686. Epub 2021 
      Jun 25.