Reverse Engineering of Conjugated Microporous Polymers: Defect Structures of Tetrakis(4-ethynylphenyl)stannane Networks

Andrea C Uptmoor; Jan Freudenberg; S Thimon Schwäbel; Fabian Paulus; Frank Rominger; Felix Hinkel; Uwe H F Bunz

doi:10.1002/anie.201506905

Reverse Engineering of Conjugated Microporous Polymers: Defect Structures of Tetrakis(4-ethynylphenyl)stannane Networks

Angew Chem Int Ed Engl. 2015 Dec 1;54(49):14673-6. doi: 10.1002/anie.201506905. Epub 2015 Oct 16.

Authors

Andrea C Uptmoor¹, Jan Freudenberg¹, S Thimon Schwäbel¹, Fabian Paulus¹, Frank Rominger¹, Felix Hinkel², Uwe H F Bunz^{3

4}

Affiliations

¹ Organisch-Chemisches Institut, Ruprecht-Karls-Universität, Im Neuenheimer Feld 270, 69120 Heidelberg (Germany).
² Centre of Advanced Materials (CAM), Ruprecht-Karls-Universität, Im Neuenheimer Feld 225, 69120 Heidelberg (Germany).
³ Organisch-Chemisches Institut, Ruprecht-Karls-Universität, Im Neuenheimer Feld 270, 69120 Heidelberg (Germany). [email protected].
⁴ Centre of Advanced Materials (CAM), Ruprecht-Karls-Universität, Im Neuenheimer Feld 225, 69120 Heidelberg (Germany). [email protected].

PMID: 26474306
DOI: 10.1002/anie.201506905

Abstract

Two different conjugated microporous polymers (CMPs) based on tetrakis(4-ethynylphenyl)stannane as the repeating unit were synthesized and their BET surfaces and thermal properties were investigated. The first direct method to elucidate the molecular structure of the organic linkers between the tin centers by digestion of the CMP is described. Selective cleavage of the tin-carbon bonds with chloroacetic acid afforded the isolated bridging units and provided insight into the surprisingly varied chemical composition of these networks.

Keywords: defect structures; homocoupling; microporous materials; polymers; structure elucidation.