Crystal‐to‐Crystal Synthesis of Photocatalytic Metal–Organic Frameworks for Visible‐Light Reductive Coupling and Mechanistic Investigations
作者:Luis Gutiérrez、Suvendu Sekhar Mondal、Alberto Bucci、Noufal Kandoth、Eduardo C. Escudero‐Adán、Alexandr Shafir、Julio Lloret‐Fillol
DOI:10.1002/cssc.202000465
日期:2020.7.7
transformations for further characterization of the catalysts. In this regard, two new photocatalytic materials, MOF‐520‐PC1 and MOF‐520‐PC2, are straightforwardly obtained by the postfunctionalization of MOF‐520 with perylene‐3‐carboxylicacid (PC1) and perylene‐3‐butyric acid (PC2). The single crystal‐to‐crystal transformation yielded the X‐ray diffraction structure of catalytic MOF‐520‐PC2. The well‐defined
Evolving Fluorophores into Circularly Polarized Luminophores with a Chiral Naphthalene Tetramer: Proposal of Excimer Chirality Rule for Circularly Polarized Luminescence
作者:Kazuto Takaishi、Kazuhiro Iwachido、Ryosuke Takehana、Masanobu Uchiyama、Tadashi Ema
DOI:10.1021/jacs.9b02582
日期:2019.4.17
A versatile method for converting various fluorescent polycyclic aromatic hydrocarbons into circularly polarized luminescence (CPL) excimer dyes with high glum and ΦFL values is reported. This method involves the functionalization of a chiral quaternaphthyl with six fluorophores via ester linkages in the last step of the synthesis. The usefulness of this approach was demonstrated for 1-, 2-, and 4-pyrenyl
Chiral exciplex dyes showing circularly polarized luminescence: extension of the excimer chirality rule
作者:Kazuto Takaishi、Sho Murakami、Kazuhiro Iwachido、Tadashi Ema
DOI:10.1039/d1sc04403f
日期:——
axially chiral binaphthyls and quaternaphthyls possessing two kinds of aromatic fluorophores, such as pyrenyl, perylenyl, and 4-(dimethylamino)phenyl groups, arranged alternately were synthesized by a divergent method. In the excitedstate, the fluorophores selectively formed a unidirectionally twisted exciplex (excited heterodimer) by a cumulative steric effect and exhibited circularlypolarized luminescence
chiroptical properties of pyrene and perylene derivatives of inexpensive chiral scaffolds: isomannide and isosorbide. Low-intensity ECD spectra were obtained, suggesting the absence of chromophore interaction in the ground state, except in the case of isomannide bis-perylenecarboxylate, whose ECD spectrum showed a positive exciton couplet. All isomannide derivatives, with the only exception of the one containing
COLOR CONVERSION FILMS COMPRISING POLYMER-SUBSTITUTED ORGANIC FLUORESCENT DYES
申请人:Frauenrath Holger
公开号:US20120301724A1
公开(公告)日:2012-11-29
The present invention concerns a color conversion film comprising at least one active layer, said layer comprising an organic fluorescent dye containing a fluorescent core, wherein said dye is substituted with at least one polymer segment. It also concerns its method of preparation.