Synthesis and structure of push–pull merocyanines based on barbituric and thiobarbituric acid
Two compounds, 1,3-diethyl-5-{(2E,4E)-6-[(E)-1,3,3-trimethylindolin-2-ylidene]hexa-2,4-dien-1-ylidene}pyrimidine-2,4,6(1H,3H,5H)-trione or TMI, C25H29N3O3, and 1,3-diethyl-2-sulfanylidene-5-[2-(1,3,3-trimethylindolin-2-ylidene)ethylidene ...
Georgii Bogdanov +3 more
doaj +1 more source
Optimizing the second-order optical nonlinearities of organic molecules: asymmetric cyanines and highly polarized polyenes [PDF]
e recently reported that there is an optimal combination of donor and acceptor strengths for a given molecular length and bridge structure that maximizes (beta) .
Cheng, Lap-Tak A. +3 more
core +1 more source
Spiropyran polymeric microcapillary coatings for photodetection of solvent polarity [PDF]
Fused silica micro-capillaries were functionalised with spiropyran-polymer brushes using surface-initiated ring-opening metathesis polymerisation. Based on the inherited spiropyran properties, the functionalised capillaries were successfully used to ...
Benito-Lopez, Fernando +3 more
core +1 more source
La dégénérescence mésomérique des colorants polyméthiniques
Toute matière colorée organique est représentée par des formules électromères limites caractérisées par l’ensemble d’un groupe donneur d’électrons, d’un groupe polarisable et d’un groupe capteur d’électrons. La structure réelle de cette substance est un
A. van Dormael
doaj +1 more source
Новые анионные полиметины флуоренового ряда [PDF]
Синтезирован винилогический ряд анионных полиметиновых красителей на основе трис(2,2,3,3,4,4,5,5- октафторпентил)-9H-флуорен-2,4,7-трисульфоната. Показано, что в отличие от аналогичных красителей производных полинитрофлуоренов у них наиболее интенсивным
Ищенко, А.А. +2 more
core +1 more source
Transient absorption spectroscopy on spiropyran monolayers using nanosecond pump–probe Brewster angle reflectometry [PDF]
Self-assembled monolayers of 11-(3’,3’-dimethyl-6,8-dinitrospiro[chromene-2,2’-indoline]-1’-yl) undecanoic acid (amphiphilic spiropyran) at the air–water interface are studied using Brewster angle reflectometry.
Aarts +40 more
core +1 more source
Photo-responsive graphene and carbon nanotubes to control and tackle biological systems [PDF]
Photo-responsive multifunctional nanomaterials are receiving considerable attention for biological applications because of their unique properties. The functionalization of the surface of carbon nanotubes (CNTs) and graphene, among other carbon based ...
Cardano, Francesca +2 more
core +1 more source
The Synthesis and Spectral Properties of Merocyanine Dyes Based on 9H‑Fluorene-2,7-Dicarbonitrile
Di-, tetra-, and hexamethine merocyanine dyes bearing donor heterocyclic end groups of different electron-donating abilities and the 9H-fluorene-2,7-dicarbonitrile moiety as the acceptor end group have been synthesized.
Iryna V. Kurdiukova +2 more
doaj +1 more source
Exciton coupling between organic dyes is important for opto-electronic and photovoltaic devices and it is well-known that strong coupling occurs between equal chromophores.
David Bialas +4 more
doaj +1 more source
Photoswitching Conduction in Framework Materials
This mini‐review summarizes recent advances in state‐of‐the‐art proton and electron conduction in framework materials that can be remotely and reversibly switched on and off by light. It discusses the various photoswitching conduction mechanisms and the strategies employed to enhance photoswitched conductivity.
Helmy Pacheco Hernandez +4 more
wiley +1 more source

