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Article Dans Une Revue Polymer Chemistry Année : 2019

Manganese phosphinocarbodithioate for RAFT polymerisation with sunlight-induced chain end post-treatment

Dmitry A. Valyaev
Eric Manoury
Rinaldo Poli

Résumé

A new manganese RAFT agent of the formula Cp(CO)(2)MnP(Ph)(2)C(?S)SCH(CH3)Ph was synthesized in a good overall yield by a three-step reaction from cymantrene and diphenylphosphine as the main starting materials. This complex proved to be efficient for the control of RAFT polymerisation of St, n-BA and DMAAm. The reaction course could be conveniently monitored by P-31 NMR spectroscopy. The controlled character of these polymerisations and the integrity of the polymer chain ends were demonstrated by the synthesis of diblock copolymers of St and n-BA. In the case of long polymerisation times (i.e. for PSt), photo-induced polymer chain coupling reactions were detected. Importantly, removal of the Mn-RAFT--chain end by visible light irradiation led to the formation of a monomodal SH-terminated PSt. These phenomena were evidenced by IR spectroscopy, SEC with RI and UV detection modes and by ESI mass spectrometry.
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Dates et versions

hal-02134244 , version 1 (17-11-2020)

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Ihor Kulai, Andrii Karpus, Liubov Soroka, Dmitry A. Valyaev, Valérie Bourdon, et al.. Manganese phosphinocarbodithioate for RAFT polymerisation with sunlight-induced chain end post-treatment. Polymer Chemistry, 2019, 10 (2), pp.267-277. ⟨10.1039/c8py01279b⟩. ⟨hal-02134244⟩
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