TY - JOUR
T1 - Combination of photoinduced ATRP and click processes for the synthesis of triblock copolymers
AU - Yilmaz, Gorkem
N1 - Publisher Copyright:
© 2018, Turkish Chemical Society. All rights reserved.
PY - 2018
Y1 - 2018
N2 - ABA type triblock copolymers possessing polystyrene as middle segment and poly(ε-caprolactone) (PCL) and poly(ethylene glycol) (PEG) as side segments were synthesized by combining two photochemical strategies, namely photoinduced atom transfer radical polymerization (ATRP) and click processes. For this purpose, α,ω-diazido functional polystyrene (N3-PS-N3) was synthesized by photoinduced ATRP using a bifunctional initiator, followed by a simple substitution of the chain end halides. Parallel to this, the alkyne-PCL was synthesized by ring opening polymerization of ε-caprolactone, employing propargyl alcohol as initiator. For the synthesis of alkyne-PEG, industrially available PEG was functionalized by a simple esterification reaction using 5-pentynoic acid. After the syntheses of these alkyne functional polymers as clickable counterparts, they were reacted with N3-PS-N3 by photoinduced click reactions to prepare the desired triblock copolymers. All polymers were characterized by NMR, FTIR, and GPC analyses.
AB - ABA type triblock copolymers possessing polystyrene as middle segment and poly(ε-caprolactone) (PCL) and poly(ethylene glycol) (PEG) as side segments were synthesized by combining two photochemical strategies, namely photoinduced atom transfer radical polymerization (ATRP) and click processes. For this purpose, α,ω-diazido functional polystyrene (N3-PS-N3) was synthesized by photoinduced ATRP using a bifunctional initiator, followed by a simple substitution of the chain end halides. Parallel to this, the alkyne-PCL was synthesized by ring opening polymerization of ε-caprolactone, employing propargyl alcohol as initiator. For the synthesis of alkyne-PEG, industrially available PEG was functionalized by a simple esterification reaction using 5-pentynoic acid. After the syntheses of these alkyne functional polymers as clickable counterparts, they were reacted with N3-PS-N3 by photoinduced click reactions to prepare the desired triblock copolymers. All polymers were characterized by NMR, FTIR, and GPC analyses.
KW - Atom transfer radical polymerization
KW - Block copolymers
KW - Copper-catalyzed azide-alkyne cycloaddition
KW - Photochemistry
UR - http://www.scopus.com/inward/record.url?scp=85051285867&partnerID=8YFLogxK
U2 - 10.18596/jotcsa.414060
DO - 10.18596/jotcsa.414060
M3 - Article
AN - SCOPUS:85051285867
SN - 2149-0120
VL - 5
SP - 727
EP - 736
JO - Journal of the Turkish Chemical Society, Section A: Chemistry
JF - Journal of the Turkish Chemical Society, Section A: Chemistry
IS - 2
ER -