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US 12,384,875 B2Granted
High-performance ladder polymers for membrane gas separation
AssigneesThe Board of Trustees of the Leland Stanford Junior University, Massachusetts Institute of Technology
InventorsHolden Wan Hong Lai, Jun Myun Ahn, Yan Xia, Zachary P. Smith, Francesco M. Benedetti
Life of this patent
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Abstract
Disclosed herein are ladder polymers comprising fused aromatic and non-aromatic rings. Also disclosed are the manufacture and use of these ladder polymers, e.g., in separation membranes, such as membrane for gas separation.
Claims15
A ladder polymer comprising at least one unit having a structure selected from:
- wherein X is selected from alkylene groups, —[O]—, —[S]—, nitrogen-containing groups, and cyclic groups,
- wherein Y1 and Y2 are independently selected from alkyl groups,
- wherein R1, R2, R3, R4, R5, and R6 are independently selected from hydride group, alkyl groups, aryl groups, heterocyclic groups, halogen groups, groups including a —O— moiety, groups including a —O(CO)— moiety, groups including a —O(CO)O— moiety, groups including a —O(CO)N< moiety), groups including a —S— moiety, groups including a —B< moiety, —NO2, groups including a —N< moiety, groups including a —P< moiety, groups including a —(PO)< moiety, —CHO, groups including a —(CO)— moiety, groups including a —(CO)O— moiety, groups including a —(CO)N< moiety, and groups including a —Si≡ moiety, and
- wherein X1 is selected from —[O]—, —[S]—, —[B(O)Ra]—, —[NRa]—, —[P(O)Ra]—, —[(PO)(O)Ra]—, —[CO]—, —[CRaRb]—, —[C(O)Ra(O)Rb]—, and —[Si(O)Ra(O)Rb]—, and Ra and Rb are independently selected from hydride group, alkyl groups, aryl groups, and heterocyclic groups.
1 more element
A ladder polymer comprising at least one unit having a structure selected from:
- wherein Y1 and Y2 are independently selected from alkyl groups;
- wherein R1, R2, and R3 are independently selected from hydride group, alkyl groups, aryl groups, heterocyclic groups, halogen groups, groups including a —O— moiety, groups including a —O(CO)— moiety, groups including a —O(CO)O— moiety, groups including a —O(CO)N< moiety), groups including a —S— moiety, groups including a —B< moiety, —NO2, groups including a —N< moiety, groups including a —P< moiety, groups including a —(PO)< moiety, —CHO, groups including a —(CO)— moiety, groups including a —(CO)O— moiety, groups including a —(CO)N< moiety, and groups including a —Si≡ moiety, and
- wherein X1 is selected from —[O]—, —[S]—, —[B(O)Ra]—, —[NRa]—, —[P(O)Ra]—, —[(PO)(O)Ra]—, —[CO]—, —[CRaRb]—, —[C(O)Ra(O)Rb]—, and —[Si(O)Ra(O)Rb]—, and Ra and Rb are independently selected from hydride group, alkyl groups, aryl groups, and heterocyclic groups.
A ladder polymer comprising at least one unit having a structure selected from:
- wherein Y1 and Y2 are independently selected from alkyl groups,
- wherein R1, R2, R5, and R6 are independently selected from hydride group, alkyl groups, aryl groups, heterocyclic groups, halogen groups, groups including a —O— moiety, groups including a —O(CO)— moiety, groups including a —O(CO)O— moiety, groups including a —O(CO)N< moiety), groups including a —S— moiety, groups including a —B< moiety, —NO2, groups including a —N< moiety, groups including a —P< moiety, groups including a —(PO)< moiety, —CHO, groups including a —(CO)— moiety, groups including a —(CO)O— moiety, groups including a —(CO)N< moiety, and groups including a —Si≡ moiety, and
- wherein X1 and X2 are independently selected from —[O]—, —[S]—, —[B(O)Ra]—, —[NRa]—, —[P(O)Ra]—, —[(PO)(O)Ra]—, —[CO]—, —[CRaRb]—, —[C(O)Ra(O)Rb]—, and —[Si(O)Ra(O)Rb]—, and Ra and Rb are independently selected from hydride group, alkyl groups, aryl groups, and heterocyclic groups.
Dependencies are inferred from the claim text.