私密直播全婐app免费大渔直播,国产av成人无码免费视频,男女同房做爰全过程高潮,国产精品自产拍在线观看

相關(guān)鏈接
聯(lián)系方式
  • 通信地址:南京東南大學(xué)九龍湖校區(qū)化工樓418室
  • 郵編:211189
  • 電話:025-52090196
  • 傳真:
  • Email:yangh@seu.edu.cn
當(dāng)前位置:> 首頁 > 論文著作 > 正文
(Angew. Chem. Int. Ed.) Ring-Opening Metathesis Polymerization of a Macrobicyclic Olefin bearing a Sacrificial Silyloxide Bridge
作者:Yu, Z.; Wang, M.; Chen, X.; Huang, S.; Yang, H.*
關(guān)鍵字:Ring-Opening Metathesis Polymerization
論文來源:期刊
具體來源:Angewandte Chemie International Edition, 2022, 61, e202112526.
發(fā)表時(shí)間:2022年

Ring-opening metathesis polymerization (ROMP)

has been regarded as a powerful tool for sequence-controlled

polymerization. However, the traditional entropy-driven

ROMP of macrocyclic olefins suffers from the lack of ring

strain and poor regioselectivity, whereas the relay-ring-closing

metathesis polymerization inevitably brings some unnecessary

auxiliary structure into each monomeric unit. We developed

a macrobicyclic olefin system bearing a sacrificial silyloxide

bridge on the a,b’-positions of the double bond as a new class

of sequence-defined monomer for regioselective ROMP. The

monomeric sequence information is implanted in the macroring,

while the small ring, a 3-substituted cyclooctene structure

with substantial ring tension, can provide not only narrow

polydispersity, but also high regio-/stereospecificity. Besides,

the silyloxide bridge can be sacrificially cleaved by desilylation

and deoxygenation reactions to provide clean-structured, nonauxiliaried

polymers.

主站蜘蛛池模板: 芒康县| 林周县| 三河市| 宁化县| 朝阳市| 凤翔县| 襄垣县| 普陀区| 黄石市| 肇庆市| 彭州市| 柳州市| 新津县| 榆林市| 沁水县| 合阳县| 大厂| 贡山| 古田县| 石楼县| 麦盖提县| 恩施市| 瑞丽市| 双流县| 江西省| 彭阳县| 汾阳市| 祁阳县| 杭州市| 贺兰县| 邹城市| 涿州市| 和平区| 元朗区| 玉山县| 陵水| 博湖县| 湘潭县| 河池市| 仙桃市| 陇川县|