Light Propagation in High‐Spin Organic Microtubes Self‐Assembled from Shape Persistent Macrocycles Carrying Oxo‐Verdazyl Biradicals

Hui, Pramiti; Chandrasekar, Rajadurai

doi:10.1002/adma.201300540

Cited by 69 publications

(73 citation statements)

References 45 publications

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“…In such a case the excitation of guided modes can be attributed to unpredictable, noncontrollable scattering of the incident beam from the waveguide irregularities, such as ends or edges of the peptide guiding core. This coupling/waveguiding/out‐coupling mechanism has been experimentally demonstrated in several studies for various organic waveguiding structures …”

Section: Peptide Integrated Opticsmentioning

confidence: 71%

Peptide Nanophotonics: From Optical Waveguiding to Precise Medicine and Multifunctional Biochips

Apter

Lapshina

Handelman

et al. 2018

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Optical waveguiding phenomena found in bioinspired chemically synthesized peptide nanostructures are a new paradigm which can revolutionize emerging fields of precise medicine and health monitoring. A unique combination of their intrinsic biocompatibility with remarkable multifunctional optical properties and developed nanotechnology of large peptide wafers makes them highly promising for new biomedical light therapy tools and implantable optical biochips. This Review highlights a new field of peptide nanophotonics. It covers peptide nanotechnology and the fabrication process of peptide integrated optical circuits, basic studies of linear and nonlinear optical phenomena in biological and bioinspired nanostructures, and their passive and active optical waveguiding. It is shown that the optical properties of this generation of bio-optical materials are governed by fundamental biological processes. Refolding the peptide secondary structure is followed by wideband optical absorption and visible tunable fluorescence. In peptide optical waveguides, such a bio-optical effect leads to switching from passive waveguiding mode in native α-helical phase to an active one in the β-sheet phase. The found active waveguiding effect in β-sheet fiber structures below optical diffraction limit opens an avenue for the future development of new bionanophotonics in ultrathin peptide/protein fibrillar structures toward advanced biomedical nanotechnology.

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Section: Peptide Integrated Opticsmentioning

confidence: 71%

Peptide Nanophotonics: From Optical Waveguiding to Precise Medicine and Multifunctional Biochips

Apter

Lapshina

Handelman

et al. 2018

Small

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“…110 The same group also reported paramagnetic hexagonal organic micro-tubes self-assembled from shape-persistent macrocycles 56 and 57, which guided laser light from one end to the other. 159 …”

Section: Wave-guiding Nanomaterialsmentioning

confidence: 99%

The btp [2,6-bis(1,2,3-triazol-4-yl)pyridine] binding motif: a new versatile terdentate ligand for supramolecular and coordination chemistry

2014

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Ligands containing the btp [2,6-bis(1,2,3-triazol-4-yl)pyridine] motif have appeared with increasing regularity over the last decade. This class of ligands, formed in a one pot 'click' reaction, has been studied for various purposes, such as for generating d and f metal coordination complexes and supramolecular self-assemblies, and in the formation of dendritic and polymeric networks, etc. This review article introduces btp as a novel and highly versatile terdentate building block with huge potential in inorganic supramolecular chemistry. We will focus on the coordination chemistry of btp ligands with a wide range of metals, and how it compares with other classical pyridyl and polypyridyl based ligands, and then present a selection of applications including use in catalysis, enzyme inhibition, photochemistry, molecular logic and materials, e.g. polymers, dendrimers and gels. The photovoltaic potential of triazolium derivatives of btp and its interactions with anions will also be discussed.

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“…In general, organic optical waveguide in its active form produce photoluminescence (PL) and (self) guide the PL within a fixed bandwidth depending upon the optical bandwidth of the molecular constituents so‐called active organic waveguides . On the contrary, passive optical waveguide transmits the coupled light (excitation source) directly to its output and produce weak Raman scattered photons as well –. For practical applications, integration of two chemically (ideally with two different optical bandwidths) and geometrically (one‐ or two‐dimension) different optical waveguides to form a micro‐hetero‐structures (MHS) is desirable.…”

Section: Methodsmentioning

confidence: 99%

Vapour‐Phase Epitaxial Growth of Dual‐Colour‐Emitting DCM‐Perylene Micro‐Heterostructure Optical Waveguides

Pradeep

Annadhasan

Chandrasekar

2019

Chemistry An Asian Journal

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Organicm icro-heterostructures (MHS) with dual optical emissions are essential to produce miniaturized optical waveguidesf or wavelength divisionm ultiplexing technologies. The bimolecular MHS produced by solutionbased bottom-up self-assembly technique often leads to poor surface smoothness, edge imperfection, defects, and unwanted thin films deposits. Conversely,s equential sublimation technique at ambient pressure facilitates effective integration of a-perylene micro-square with dicyanomethylene-2-methyl-6-(p-dimethylaminostyryl) 4H-pyran (DCM) microrods in an epitaxial manner to produce MHS. The obtained DCM/perylene MHS act as optical waveguides to produce red (l max % 670 nm) or/and yellow (l max % 607 nm) dual optical outputs via an energy transfer mechanism depending upon the heterostructures geometry and optical excitation positions. The presented dualcolor emitting MHS opticalw aveguidesa re essential for the integratedn ano-photonic and optoelectronic device structures.Nano-and micro-scaleo rganic devices tructures are rapidly emerging as an alternative to inorganic ones. [1] Mainly,b ecause of the electronic properties of organic molecules are easily tunable via custom-made synthesis, andv ariousf lexible device structure can be fabricated by either solution-or physical vapor deposition techniques. [1] Direct applications of organic molecule-based materials include solid-state lasers, [2] lightemitting diodes and transistors, [3] photovoltaic cells, [4] and miniaturize photonic devices. [2] The micro-/nano-scale photonic device structures comprise of components such as optical waveguides, [5,6] modulators, [5d] filters, [7] cavities, [8] and lasers. [9] The above-mentioned photonic device structures are futuristic and are vital to the development of photon-based quantum information-processing, communication as well as integratedc ircuits. [10] One of the prime requirements for the implementation [a] V. V. Pradeep, Dr.M.A nnadhasan, Prof. R. Chandrasekar

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Light Propagation in High‐Spin Organic Microtubes Self‐Assembled from Shape Persistent Macrocycles Carrying Oxo‐Verdazyl Biradicals

Abstract: A 1D paramagnetic organic tube self‐assembled from a “clicked” shape‐persistent macrocycle carrying high‐spin oxoverdazyl biradicals shows optical wave guiding behavior.

Cited by 69 publications

References 45 publications

Peptide Nanophotonics: From Optical Waveguiding to Precise Medicine and Multifunctional Biochips

Peptide Nanophotonics: From Optical Waveguiding to Precise Medicine and Multifunctional Biochips

The btp [2,6-bis(1,2,3-triazol-4-yl)pyridine] binding motif: a new versatile terdentate ligand for supramolecular and coordination chemistry

Vapour‐Phase Epitaxial Growth of Dual‐Colour‐Emitting DCM‐Perylene Micro‐Heterostructure Optical Waveguides

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