“…[6][7][8] However, the discoveries of anionic 9 and cationic 10 polymerisation as well as controlled radical polymerisation methodologies including atom transfer radical polymerisation (ATRP), 11,12 reversible addition-fragmentation chain-transfer (RAFT) polymerisation 13 and nitroxide mediated polymerisation (NMP) 14 have enabled the synthesis of well-dened macromolecules with controlled molecular weight, architecture, end-group delity and dispersity. [15][16][17][18][19][20][21][22][23] In fact, the high end-group delity and the controlled nature of the polymerisation is typically conrmed by low dispersity values and as such dispersities in the range of Đ z 1.01-1.20 are routinely targeted. [24][25][26][27][28][29][30][31][32] Conversely, broader molecular weight distributions (Đ > 1.4) are oen considered to be a sign of uncontrolled or "failed" polymerisation and necessitate additional optimisation to reduce the dispersity.…”