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One‐Pot Preparation of 3D Nano‐ and Microaggregates via In Situ Nanoparticlization of Polyacetylene Diblock Copolymers Produced by ROMP
Author(s) -
Yoon KiYoung,
Shin Suyong,
Kim YongJae,
Kim Inhye,
Lee Eunji,
Choi TaeLim
Publication year - 2015
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.201400649
Subject(s) - polyacetylene , romp , copolymer , materials science , polymerization , cyclooctatetraene , metathesis , polymer chemistry , polymer , conjugated system , in situ polymerization , chemical engineering , chemistry , organic chemistry , composite material , molecule , engineering
Zero‐dimensional (0D) nanospheres, 1D nanocaterpillars, and 3D aggregates are produced from simple diblock copolymers containing polyacetylene (PA) via in situ nanoparticlization of conjugated polymers. The diblock copolymers are prepared by ring‐opening metathesis polymerization via one‐pot sequential addition of an endo ‐tricyclo[4.2.2.0]deca‐3,9‐diene (TD) and cyclooctatetraene. Initially, they spontaneously form nanospheres consisting of a PA core and PTD shell, and increasing the length of the PA block leads to the direct nanoparticlization of the higher‐dimensional structures such as 1D and 3D aggregates because of the decreased effective volume ratio of the rigid PTD shell to the solvophobic PA core.