Fabrication of high-resolution 4,8(2) -type archimedean nanolattices composed of solution processable spin cross-over Fe(II) metallosupramolecular polymers

• Published in: Macromolecular rapid communications. Vol. 36; no. 7; pp. 647 - 653
• Main Authors: Venkataramudu, Uppari, Chandrasekhar, Naisa, Basak, Supratim, Prasad, Muvva D, Chandrasekar, Rajadurai
• Format: Journal Article
• Language: English
• Published: Germany 01.04.2015
• Subjects: Crystallography, X-Ray; Ferrous Compounds - chemical synthesis; Ferrous Compounds - chemistry; Models, Molecular; Molecular Structure; Polymers - chemical synthesis; Polymers - chemistry; Temperature; Fe(II) ions; coordination polymers; lithography; nanopatterns; spin cross-over effects
• ISSN: 1521-3927
• DOI: 10.1002/marc.201400628

This paper presents the synthesis of two highly soluble Fe(II) metallosupramolecular polymers with two counter anions from a novel back-to-back coupled hybrid ligand. The spin cross-over (SCO) temperature of polymers with BF4 and ClO4 counter anions is T1/2 = 313 K and T1/2 = 326 K, respectively. By following the top-down approach, one of the polymers (with ClO4 counter anion) is successfully solution processed using a lithographically controlled wetting technique to create laser readable high-resolution Archimedean (4,8(2) ) nanolattices (consist of diamagnetic octagons and SCO squares). The thickness and top area of each SCO square are ≈75 nm and ≈2 × 2 μm(2) , respectively.