Results 61 to 70 of about 6,902 (225)

Spiropyran-Modified Cellulose for Dual Solvent and Acid/Base Vapor Sensing

open access: yesChemosensors
Stimuli-responsive materials based on renewable biopolymers are highly attractive for developing sustainable chemical sensors. Here, two spiropyran derivatives (SP1 and SP2) were synthesized and covalently grafted onto cellulose, yielding the functional ...
Daniel D. S. de Sá   +7 more
doaj   +1 more source

MXene‐Based Flexible Memory and Neuromorphic Devices

open access: yesSmall, EarlyView.
The unique two‐dimensional structure, excellent electrical conductivity, and diverse surface groups of MXenes have garnered significant attention. Coupled with their exceptional flexibility, MXene‐based devices hold immense potential for flexible memory and neuromorphic systems. This review comprehensively discusses the fundamentals of flexible devices,
Yan Li   +13 more
wiley   +1 more source

Spectroscopic Determination of Binding Constants of Modified β-cyclodextrins with Brooker’s Merocyanine [PDF]

open access: yes, 2013
Host-guest complexation occurs when a guest molecule is held inside a host molecule through weak molecular forces. β-cyclodextrin, a host molecule, has a variety of uses and is often applied in pharmaceuticals.
Hanson, Carly
core   +2 more sources

Carbon nanotubes as substrates for molecular spiropyran-based switches [PDF]

open access: yes, 2012
We present a joint theory–experiment study investigating the excitonic absorption of spiropyran-functionalized carbon nanotubes. The functionalization is promising for engineering switches on a molecular level, since spiropyrans can be reversibly ...
Blümmel, Pascal   +6 more
core   +1 more source

A clusteroluminescent supramolecular polymer network constructed by pillararene and its application in information encryption

open access: yesAggregate
Clusterization‐triggered emissive (CTE) materials have attracted great attention in recent years. The regulation of the emission property of materials with CTE property through supramolecular interactions is an excellent strategy for the construction of ...
Meiru Zhang   +7 more
doaj   +1 more source

New Triphenylphosphonium Salts of Spiropyrans: Synthesis and Photochromic Properties

open access: yesMolecules
The most important area of modern pharmacology is the targeted delivery of drugs, and one of the most promising classes of chemical compounds for creating drugs of this kind are the photochromic spiropyrans, capable of light-controlled biological ...
Artur A. Khuzin   +3 more
doaj   +1 more source

High‐performance electro‐optic materials featuring enhanced thermal stability through dual‐donor structural crosslinking engineering

open access: yesSmart Molecules, EarlyView.
A groundbreaking dual‐donor crosslinking strategy was reported to significantly enhance the thermal stability, achieving remarkable EO coefficients (257–301 pm/V), glass transition temperatures (Tg) ranging from 107–187°C, and ultrahigh chromophore densities (3.73–4.26 × 10²⁰ molecules/cm³) with exceptional long‐term stability after 500 h at 85°C ...
Yu Zhang   +7 more
wiley   +1 more source

Photophysics and Inverted Solvatochromism of 7,7,8,8-Tetracyanoquinodimethane (TCNQ) [PDF]

open access: yes, 2019
We report the absorption, fluorescence, and Raman spectroscopy of 7,7,8,8- tetracyanoquinodimethane (TCNQ) in a variety of solvents. The fluorescence quantum yields (QYs) of linear alkane solutions are similar to one another, but QY is shown to acutely ...
IIMORI Toshifumi   +4 more
core   +2 more sources

Photoactivatable 1,2-dioxetane chemiluminophores

open access: yesResults in Chemistry, 2021
Photochemical control of molecules has provided chemists with the ability to establish high spatiotemporal control of chemical configuration and activity.
Lucas S. Ryan   +2 more
doaj   +1 more source

Thermally Bistable Stiff Stilbene Photoswitches and Polymer Applications

open access: yesThe Chemical Record, EarlyView.
Thermally stable photoswitches offer new opportunities for controlling polymer structures and functions under nonequilibrium conditions. This Personal Account highlights stiff stilbene (SS) and sterically hindered stiff stilbene (HSS) photoswitches, which combine large structural changes with exceptional thermal bistability.
Keiichi Imato
wiley   +1 more source

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