TY  - JOUR
AB  - In this work, we report a π-conjugated Pt(II) complex 1 that self-assembles in nonpolar medium into two competing supramolecular polymers with distinct molecular packing (slipped (A) vs pseudoparallel (B)) that do not interconvert over time in a period of at least six months at room temperature. Precise control of temperature, concentration, and cooling rate enabled us to ascertain the stability conditions of both species through a phase diagram. Extensive experimental studies and theoretical calculations allowed us to elucidate the packing modes of both supramolecular polymorphs A and B, which are stabilized by unconventional N−H···Cl−Pt and N−H···O-alkyl interactions, respectively. Under a controlled set of conditions of cooling rate and concentration, both polymorphs can be isolated concomitantly in the same solution without interconversion. Only if A is annealed at high temperature for prolonged time, does a slow transformation into B then take place via monomer formation. Our system, which in many respects bears close resemblance to concomitant packing polymorphism in crystals, should help bridge the gap between crystal engineering and supramolecular polymerization.
AU  - Langenstroer, Anja
AU  - Kartha, Kalathil K.
AU  - Dorca, Yeray
AU  - Droste, Jörn
AU  - Stepanenko, Vladimir
AU  - Albuquerque, Rodrigo Q.
AU  - Hansen, Michael Ryan
AU  - Sánchez, Luis
AU  - Fernández, Gustavo
DA  - 2019-02-20
DO  - 10.1021/jacs.8b11011
KW  - Polymorphismus
KW  - Pt(II)
KW  - Selbstassemblierung
KW  - OPE-basiert
KW  - supramolekulare Polymerisation
KW  - Polymorphism
KW  - self-assembles
KW  - OPE-based
KW  - supramolecular polymerization
LA  - eng
N1  - Journal of the American Chemical Society (2019) 141, 5192-5200
N1  - This work was supported by the European Commission (715923-SUPRACOP ERC-StG-2016), the MINECO of Spain (CTQ2017-82706-P) and the Comunidad de Madrid (NanoBIOCARGO, P2018/NMT-4389).
PY  - 2019-02-20
TI  - Unraveling Concomitant Packing Polymorphism in Metallosupramolecular Polymers
TT  - Entschlüsseln des begleitenden Verpackungspolymorphismus in Metallosupramolekulare Polymere
UR  - https://nbn-resolving.org/urn:nbn:de:hbz:6-30189488243
Y2  - 2024-12-27T10:03:08
ER  -