Evidence for diffusing atomic oxygen uncovered by separating reactants with a semi-permeable nanocapsule barrier
Evidence for diffusing atomic oxygen uncovered by separating reactants with a semi-permeable nanocapsule barrier
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DOI：
10.1039/c8cc06715e
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发表时间：
2019-02-11
影响因子：
4.9
通讯作者：
McCulla, Ryan D.
中科院分区：
文献类型：
--
作者：
Omlid, Sara M.;Dergunov, Sergey A.;McCulla, Ryan D.
基态原子氧[O（3 P）]是一种氧化剂，其在溶液中的形成被提出但从未被证实。聚合物纳米帽被用于物理分离二苯并噻吩S-氧化物（DBTO），O（3 P）的来源，从O（3 P）-接受分子。负载DBTO的聚合物纳米胶囊的辐照导致置于纳米胶囊外部的O（3 P）-受体的氧化。结果排除了直接氧原子转移机制，并与自由扩散O（3 P）作为氧化剂是一致的。
Ground-state atomic oxygen [O(3P)] is an oxidant whose formation in solution was proposed but never proven. Polymer nanocapsules were used to physically separate dibenzothiophene S-oxide (DBTO), a source of O(3P), from an O(3P)-accepting molecule. Irradiation of polymer nanocapsules loaded with DBTO resulted in oxidation of the O(3P)-acceptor placed outside nanocapsules. The results rule out a direct oxygen atom transfer mechanism and are consistent with freely diffusing O(3P) as the oxidant.