Fe-terpyridyl complex based multiple switches for application in molecular logic gates and circuits

Abstract

The Fe(ii)-terpyridyl binary complex is used as a molecular switch upon external chemical stimuli. The stability of different switching states, their reversibility upon further chemical stimulus, prompted construction of solution based molecular logic gates and circuits.

Nanometric Assembly of Functional Terpyridyl Complexes on Transparent and Conductive Oxide Substrates: Structure, Properties, and Applications

“…36 Additionally, such entities often act as external chemical triggers, either in solution or solid phase, for altering molecular properties to yield multiple, different molecular states leading to molecular switches and allowing them to create molecular logic via a bottom-up approach, thereby, mimicking Boolean logic. 37 The latter is particularly interesting in view of its emerging applications including as a photosensitizer 38 and its involvement in paper-based molecular logic as well as other endeavors. 39 We tested the OsPT/Cu/RuPT/Cu/FePT triad film in this context.…”

Opto-Electroactive Amino- and Pyridyl-Terminated Monolayers of RuII–Terpyridyl Complexes and Their Usage as Hg2+ Sensors

“…4,5 Accordingly, the solubility, stability, redox potential and kinetics, and optical characteristics of metal− polypyridyl complexes can be controlled and manipulated in a desired way. For these reasons, functional polypyridyl complexes have found great utility in the design of metallosupramolecular architectures 6 as well as active elements in photodynamic therapy, 7,8 catalysts, 9,10 sensing modules, 11,12 components of nonvolatile memory devices, 13,14 photochromic or electrochromic elements in solid-state devices, 15,16 and media for charge and spin transport. 17,18 Most of these applications rely on covalent or noncovalent assembly of polypyridyl complexes on suitably functionalized solid substrates, which provide aligned and densely packed nanometric architectures, with a much better control over molecular orientation, integrity, and functionality compared to the liquid media case.…”

“…Metal–polypyridyl complexes are potentially useful for a variety of photophysical, electrochemical, and spectro-electrochemical applications. − Particular beneficial aspects of these systems are their structural tunability and flexible choice of metal ions, which also affect the positions of the highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) states as well as the respective energy gap. , Accordingly, the solubility, stability, redox potential and kinetics, and optical characteristics of metal–polypyridyl complexes can be controlled and manipulated in a desired way. For these reasons, functional polypyridyl complexes have found great utility in the design of metallo-supramolecular architectures as well as active elements in photodynamic therapy, , catalysts, , sensing modules, , components of nonvolatile memory devices, , photochromic or electrochromic elements in solid-state devices, , and media for charge and spin transport. , Most of these applications rely on covalent or noncovalent assembly of polypyridyl complexes on suitably functionalized solid substrates, which provide aligned and densely packed nanometric architectures, with a much better control over molecular orientation, integrity, and functionality compared to the liquid media case. , Such molecular assemblies can also serve as a basis for creating application-oriented novel multifunctional materials and also act as a versatile tool box for discerning structure–property relationship, which is an essential requirement for modeling a variety of interfacial phenomena.…”

Photoinduced electron transfer as a design concept for luminescent redox indicators

“…18,19 A classic example is the metal-organic complex of 1,10-phenanthroline iron(II) 1, otherwise known as ferroin, which in solution is coloured pale blue in the oxidized form and deep red in the reduced form. Using multiple analytes, a Fe(II)-terpyridyl complex with an absorbance peak of 569 nm in acetonitrile was demonstrated as a combinatorial logic gate 20 as well as a redox-active component of films on Si(111) and glass. 21 Another metal-organic complex is 2,2′-bypyridine ruthenium(II) 2 (Fig.…”