TY  - JOUR
A1  - Lehnen, Anne-Catherine
A1  - Kurki, Jan A. M.
A1  - Hartlieb, Matthias
T1  - The difference between photo-iniferter and conventional RAFT polymerization
BT  - high livingness enables the straightforward synthesis of multiblock copolymers
JF  - Polymer Chemistry
N2  - Photo-iniferter (PI)-RAFT polymerization, the direct activation of chain transfer agents via light, is a fascinating polymerization technique, as it overcomes some restriction of conventional RAFT polymerization. 
As such, we elucidated the role of reversible deactivation in this context using a monomer-CTA pair with low chain transfer capabilities. 
Tests with varying targeted degrees of polymerization (DP) or monomer concentrations revealed no significant improvement of polymerization control using the PI-process. Control can however be achieved via slow monomer addition, increasing the number of activation/deactivation events per monomer addition. 
More importantly, the livingness of the polymerization was found to be extraordinarily high, enabling the straightforward and rapid synthesis of multiblock copolymers with up to 20 blocks and a high number of repeating units per block (DP = 25-100) maintaining an overall excellent definition (M-n = 90 300 g mol(-1), D = 1.29). 
This study highlights the enormous potential of PI-RAFT polymerization for the synthesis of polymeric materials.
Y1  - 2022
U6  - https://doi.org/10.1039/d1py01530c
SN  - 1759-9954
SN  - 1759-9962
VL  - 13
IS  - 11
SP  - 1537
EP  - 1546
PB  - Royal Society of Chemistry
CY  - Cambridge
ER  -