We report on the comparison of electronic and photophysical properties a series related donor–acceptor–donor oligomers incorporating previously known 2H-benzo[d][1,2,3]triazole (BTz) moiety as acceptor recently reported BTzTD acceptor, hybrid BTz 2,1,3-benzothiadiazole (BTD). Although often implied in polymer literature that has good character, we show this is best described weak acceptor. present electrochemical, computational, evidence supporting our assertion strong electron while...

Heteroannulated benzothiadizole acceptors in donor–acceptor polymers.

Herein we report the synthesis and characterization of light responsive metal organic framework (MOF) single crystals containing photochromic diarylethene 1,2-bis(2,5-dimethyl-thien-3-yl)perfluorocyclopentene. Polarized microscopy on indicates that photochrome is preferentially aligned along c-axis host.

Stabilization of unfavorable rotational isomers within the nanoporous crystalline matrix reduces useful lifetime this photo-switchable material.

The synthesis and characterization of novel photochromic diarylethene-based linkers for use in metal–organic frameworks is described including crystal structure analysis nearly all reaction intermediates.

Tailor-made additives, which are molecules that share the same molecular structure as a parent molecule with only slight structural variations, have previously been demonstrated useful means to control crystallization dynamics in solution. For example, tailor-made additives can be added solutions of crystallizing alter crystal growth rate, size, and shape. We apply this strategy predictably morphology bulk-heterojunction (BHJ) photovoltaic cells. Through use an asymmetric oligomer...

The effects of solution-state dielectric and intermolecular interactions on the degree charge separation in metastable spirooxazine photomerocyanines (PMCs) is investigated. We report first X-ray diffraction (XRD) analyses an open form, a photomerocyanine, class photochromic molecules two derivatives: spiro[azahomoadamantane-isoquinolinoxazine] (1) spiro[azahomoadamantane-phenanthrolinoxazine] (2). Using results XRD analysis photomerocyanine forms, conjunction with computation,...

Abstract Polymer photovoltaic devices commonly suffer from low power conversion efficiencies despite the potential for much higher performance. Here we apply a recently reported system creating chemically fixed polymer p‐i‐n junction to devices. Both single‐component and blended donor/acceptor are fabricated tested. We study during charging find that changes in light dark current characteristics consistent with formation of active material. While overall performance these systems need...

The single crystals of a closed form spirooxazine spiro[azahomoadamantane-isoquinolinoxazine] were found for the first time to undergo photocoloration processes consistent with photochromism in crystalline phase.

The chemistry of electron deficient π-acceptors offers unique challenges in the rational design and synthesis organic dyes for use solar cells. We have synthesized 2-cyano-2-(3-cyano-4-((E)-4-(dibutylamino)styryl)-5,5-dimethylfuran-2(5H)-ylidene)ethanoic acid (2), a dye containing an carboxylated version strongly withdrawing TCF group by way stepwise isolation 2,5-dihydro-2-imino-4,5,5-trimethylfuran-3-carbonitrile (5), previously only available as intermediate via microwave chemistry. this...

We report on the synthesis of a polyfluorene derivative, PFO(X), with furan pendant groups capable Diels–Alder crosslinking maleimide containing small molecule passive crosslinker (PC) and red emitting donor–acceptor–donor dopant molecule, bE-BTD(X). It was initially intended that blend these three components would afford system where concentration could be increased to point complete energy transfer from host polymer emissive achieved. Because such systems often suffer quenching shifts in...

We report the synthesis and characterization of 2,3-bis(5-iodo-2-methylthiophen-3-yl)naphthalene-1,4-dione its ring-closed isomer.

Abstract We report the synthesis of a 3‐ethylhexyloxy substituted poly( meta ‐phenylene), EHO‐PMP that shows absorption and solid state photoluminescence exclusively in UV region electromagnetic spectrum with an emission maximum 345 nm. Computational analysis model oligomers by DFT methods indicates is wide bandgap polymer HOMO being localized on dimeric (biphenyl) unit LUMO more delocalized. The energy LUMO, however, suggests inefficient electron injection would occur from currently...

Organic photochromic molecules including diarylethenes are of particular interest for their numerous potential applications high-density optical data storage and light-activated switches. In this report, we examined the temperature dependence light-drive photocyclization reaction in a classic diarylethene. The steady-state populations were monitored spectroscopically by dependent situ photocrystallography, latter being first reported example technique. observed decrease population with...

Diarylethene photochromes show promise for use in advanced organic electronic and photonic materials with burgeoning considerations biological applications; however, these compounds typically require UV light photoswitching at least one direction, thus limiting their appeal. We here introduce a naphthoquinone-based diarylethene that switches between open closed forms visible light. The synthesis of this quinone relies on Suzuki methodology, allowing the inclusion functional groups not...

Photochromic compounds have a lengthy history of study and profusion applications that stand to gain from these studies. Among the classes photochromic compounds, diarylethenes show desirable properties including high fatigue resistance thermal stability, thus meeting some most important criteria necessary enter realm practical applications. Recently, containing quinone functionalities demonstrated interesting optical solid-state properties. When properly interfaced with suitable electron...

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDissociation of molecular iodine by excited iodine(2P1/2) atomsD. Patel and David J. BenardCite this: Phys. Chem. 1985, 89, 15, 3274–3276Publication Date (Print):July 1, 1985Publication History Published online1 May 2002Published inissue 1 July 1985https://pubs.acs.org/doi/10.1021/j100261a021https://doi.org/10.1021/j100261a021research-articleACS PublicationsRequest reuse permissionsArticle Views114Altmetric-Citations4LEARN ABOUT THESE...

The title tri-phenyl-amine derivative, C24H17Cl2N, featuring a 3,5-di-chloro-1,1'-biphenyl moiety has been synthesized and structurally characterized. mol-ecular structure shows rotations of the phenyl rings in range 37-40° from amine plane. In crystal, mol-ecules inter-act by van der Waals inter-actions.

Organic photochromic molecules including diarylethenes are of particular interest for their potential applications in fields high density optical data storage and light-activated switches, among many others. However, one the limitations diarylethene-based systems has been low photoconversion observed neat single crystals which is often less than 20%. The conversion typically believed to be result screening effects photoisomerized at surface absorb incident light preventing full isomerization...