Soft Matter Photonics: Interplay of Soft Matter and Light

ACS Nano, Год журнала: 2025, Номер unknown

Опубликована: Март 20, 2025

The light-soft matter interaction and its applications form the foundation of Soft Matter Photonics, here termed "Soft Mattonics", positioning it as fertile ground for developing next-generation photonic technologies. Over past few decades, this rapidly evolving field has achieved significant advancements, leading to successful across a wide range disciplines, including optoelectronics, photonics, information technology, material science, robotics, biomedicine, astronomy. In Perspective, we provide an overview Mattonics, highlighting recent developments in light-controlled soft their light manipulating. Additionally, offer insights into future research directions with emphasis on both foundational practical that will drive continued growth innovation field.

Язык: Английский

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Distinguishing packing configurations of molecular dimers using excited-state absorption peaks in two-dimensional electronic spectra

The Journal of Chemical Physics, Год журнала: 2025, Номер 162(17)

Опубликована: Май 1, 2025

Packing conformations of molecular aggregates are known to strongly influence the locations and intensities spectral peaks. Here, we develop third-order nonlinear spectroscopy signals for a purely electronic model dimer, which is prototype aggregate system. The model-which focuses on excited-state absorption (ESA) pathways in two-dimensional spectra-reveals that orientational averaging leads diagnostic ESA peak H- J-dimers. We constructed DNA-templated dimers cyanine molecules as representative systems used ultrabroadband measurements support predicted signatures arising from theoretical model. Fitting steady-state spectra supports assigned packing conformations. results elucidate how peaks can be conformation. This work lays foundation future studies include complicating effects vibronic states additional levels.

Язык: Английский

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Characterizing Absolute Orientations in DNA Self-Assembly of Single Molecules

The Journal of Physical Chemistry B, Год журнала: 2025, Номер unknown

Опубликована: Май 14, 2025

DNA self-assembly of single molecules (i.e., dyes) with deterministic orientations is a powerful approach for engineering molecular excitons. However, current determination methods the dye orientation relative to do not account plane, which missing degree freedom needed define absolute three-dimensional orientations. In this work, we combine fluorescence-detected linear dichroism, defocused dipole imaging, and point accumulation imaging in nanoscale topography (DNA-PAINT) super-resolution microscopy determine Cy5 dyes host duplexes, includes plane orientation. The data revealed that absorption emission dipoles are perpendicular duplex, mean parallel bases, supports notion intercalate between base pairs. presented methodology will inspire investigation controlling arrangement configurations beyond spontaneous π-stacking as well achieving novel dye-DNA arrangements.

Язык: Английский

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Excitonically Coupled Cyanine Dye Dimers as Optical Energy Transfer Relays on DNA Templates

ACS Applied Optical Materials, Год журнала: 2024, Номер unknown

Опубликована: Апрель 8, 2024

An attractive strategy to improve the energy transfer properties of synthetic dye networks is optimize excitonic coupling between dyes increase rates. To explore this possibility, we investigated use J-like cyanine dimers (Cy3 and Cy5 dimers) on DNA duplexes as relays in molecular photonic wires. This approach based collective emission dipole a J-dimer enhance FRET rate dimer relay remote acceptor dye. Experimentally, find that room temperature aqueous buffer conditions, provided no benefit quantum yield relative simple monomer relay. Further investigation led us determine enhanced nonradiative relaxation, non-ideal orientation within dimer, unfavorable limit through We hypothesized relaxation was largest factor demonstrated by placing sample viscous solvent or cooling sample, which dramatically improved Similar how formation DNA-templated has improved, practical efficiency will require improvements ability control reach its full potential.

Язык: Английский

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Unveiling photoinduced electron transfer in cobalt(iii)-R-pyridine complexes anchored to anatase nanocrystals: photoluminescence and magnetic studies

RSC Advances, Год журнала: 2024, Номер 14(24), С. 17218 - 17233

Опубликована: Янв. 1, 2024

This article demonstrates the synthesis of mixed ligand complexes cis -[Co(tn) 2 (Rpy)Br]Br via a mechanochemical approach. Their ferromagnetic properties and efficient electron transfer to Co( iii ) using TiO under UV light are confirmed.

Язык: Английский

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Tunability of exciton delocalization in DNA Holliday junction-templated indodicarbocyanine 5 (Cy5) dye derivative heterodimers

Nanoscale Horizons, Год журнала: 2024, Номер 9(12), С. 2334 - 2348

Опубликована: Янв. 1, 2024

We studied the exciton delocalization of indodicarbocyanine 5 dye derivative (Cy5-R) heterodimers templated by a DNA Holliday junction (HJ), which was quantified hopping parameter J m , n .

Язык: Английский

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Multiplexed DNA and Protease Detection with Orthogonal Energy Transfer on a Single Quantum Dot Scaffolded Biosensor

ACS Sensors, Год журнала: 2023, Номер 9(1), С. 157 - 170

Опубликована: Дек. 31, 2023

Almost all pathogens, whether viral or bacterial, utilize key proteolytic steps in their pathogenesis. The ability to detect a pathogen's genomic material along with its activity represents one approach identifying the pathogen and providing initial evidence of viability. Here, we report on prototype biosensor design assembled around single semiconductor quantum dot (QD) scaffold that is capable detecting both nucleic acid sequences by using orthogonal energy transfer (ET) processes. sensor consists central QD via peptidyl-PNA linkers multiple DNA encode complements originating from Ebola, Influenza, COVID-19 viruses, which use as surrogate targets. These are hybridized complement strands labeled terbium (Tb) chelate, AlexaFluor647 (AF647), Cy5.5 dyes, giving rise two potential FRET cascades: first includes Tb → AF647 (→ = ET step), detected time-gated modality, Cy5.5, direct excitation. DNA-displaying construct then further RuII-modified peptide, quenches photoluminescence charge recognized protease yield full biosensor. Each DNAs peptides can be ratiometrically controllable manner tune each pathways. Addition given target displaces QD, disrupting channel, while addition disrupts quenching boosts relay capabilities. Along characterizing pathways verifying biosensing individual multiplexed formats, also demonstrate this function molecular logic perform Boolean operations; highlights construct's discriminate transduce signals between different inputs pathogens. application space for such device discussed.

Язык: Английский

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Boosting Excited‐State Energy Transfer by Anchoring Dipole Orientation in Binary Thermally Activated Delayed Fluorescence/J‐Aggregate Assemblies

Chemistry - A European Journal, Год журнала: 2024, Номер 30(34)

Опубликована: Апрель 15, 2024

Förster resonance energy transfer (FRET) has been widely applied in fluorescence imaging, sensing and so on, while developing useful strategy of boosting FRET efficiency becomes a key issue that limits the application. Except optimizing spectral properties, promoting orientation factor (κ

Язык: Английский

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Bioinspired Photonic Systems Directed by Designer DNA Nanostructures

ACS Applied Optical Materials, Год журнала: 2024, Номер unknown

Опубликована: Июль 23, 2024

Язык: Английский

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A mean-field theory for characterizing the closing rates of DNA origami hinges

The Journal of Chemical Physics, Год журнала: 2024, Номер 161(7)

Опубликована: Авг. 15, 2024

The evolution of dynamic DNA nanostructures has propelled nanotechnology into a robust and versatile field, offering groundbreaking applications in nanoscale communication, drug delivery, molecular computing. Yet, the full potential this technology awaits further enhancement through optimization kinetic properties governing conformational changes. In work, we introduce mean-field theory to characterize behavior origami hinge where each arm bears complementary single-stranded overhangs different lengths, which can latch at closed conformation. This device is currently being investigated for multiple applications, particular interest development DNA-based rapid diagnostic tests coronavirus. Drawing from classical statistical mechanics theories, derive analytical expressions mean binding time these within constant hinge. analysis then extended flexible hinges, angle diffuses predetermined energy landscape. We validate our model by comparing it with experimental measurements closing rates nanocalipers landscapes overhang demonstrating excellent agreement suggesting fast angular relaxation relative binding. These findings offer insights that guide devices specific state lifetimes. Moreover, framework introduced here lays groundwork advancements modeling kinetics nanostructures.

Язык: Английский

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