Fluorene-based mononuclear gold(i) complexes: the effect of alkyl chain, aggregation-induced emission (AIE) and mechanochromism characteristics

RSC Advances ◽  
2016 ◽  
Vol 6 (77) ◽  
pp. 73933-73938 ◽  
Author(s):  
Zhao Chen ◽  
Yuting Nie ◽  
Sheng Hua Liu
Keyword(s):  
Alkyl Chain ◽  
Aggregation Induced Emission

Three gold(i) complexes were synthesized, and these gold(i) complexes exhibit AIE or alkyl chain-dependent mechanochromism characteristics.

9,10-Bis(N-alkylindole-3-yl-vinyl-2)anthracenes as a new series of alkyl length-dependent piezofluorochromic aggregation-induced emission homologues

RSC Advances ◽  
2015 ◽  
Vol 5 (89) ◽  
pp. 73046-73050 ◽  
Author(s):  
Q. K. Sun ◽  
W. Liu ◽  
S. A. Ying ◽  
L. L. Wang ◽  
S. F. Xue ◽  
...  
Keyword(s):  
Alkyl Chain ◽  
Aggregation Induced Emission ◽  
Spectral Shifts ◽  
Chain Lengths ◽  
Alkyl Length

AIE active 9,10-bis(N-alkylindole-3-yl-vinyl-2)anthracene homologues (IACn) could be facilely prepared and exhibit alkyl length-dependent piezofluorochromic properties whose spectral shifts increase with the decrease of N-alkyl chain lengths.

Synthesis, characterization and aggregation induced emission properties of anthracene based conjugated molecules

2016 ◽  
Vol 40 (6) ◽  
pp. 5099-5106 ◽  
Author(s):  
Rajendiran Balasaravanan ◽  
Ayyanar Siva
Keyword(s):  
Alkyl Chain ◽  
Conjugated Molecules ◽  
Aggregation Induced Emission ◽  
Emission Properties ◽  
Anthracene Derivatives ◽  
Optoelectronic Applications ◽  
Long Alkyl Chain

A series of long alkyl chain substituted linear and branched conjugated anthracene derivatives have aggregation-induced emission properties and also show PFC behavior, which can be useful for optoelectronic applications.

Cyano-Functionalized Diarylethene Derivatives with Aggregation-Induced Emission Enhancement and Piezofluorochromic Behaviours

2019 ◽  
Vol 72 (5) ◽  
pp. 369 ◽  
Author(s):  
Ying Liu ◽  
Yuqi Cao ◽  
Xue Li ◽  
Yang Li ◽  
Bowei Wang
Keyword(s):  
Photoluminescence Spectrum ◽  
Molecular Conformation ◽  
Alkyl Chain ◽  
Weak Interactions ◽  
Bathochromic Shift ◽  
Phenothiazine Derivatives ◽  
Aggregation Induced Emission ◽  
Emission Enhancement ◽  
Fluorescent Materials ◽  
Donor Acceptor

Four donor–acceptor (D-A) type phenothiazine derivatives were designed and synthesized and all of them exhibited an aggregation-induced emission enhancement (AIEE) effect and red-shifted piezofluorochromic (PFC) behaviour. Moreover, it was found that the compound containing a shorter alkyl chain displayed more remarkable PFC properties. This result was probably ascribed to highly twisted conformations which can lead to loose solid molecular packing with cavities and weak interactions. After they were pressed, the planarization of the molecular conformation increased and molecular conjugation degree enhanced, resulting in a red-shift in the photoluminescence spectrum. In addition, optimized geometric structures indicate that the compound with a longer alkyl chain has a more planer geometric structure, which leads to a smaller bathochromic shift upon grinding. In summary, we provide a new path to regulate the PFC behaviours of fluorescent materials by changing the length of their substituted alkyl chain.

Template mediated crystal engineering

1994 ◽  
Vol 52 ◽  
pp. 480-481
Author(s):  
Brigid R. Heywood ◽  
S. Champ
Keyword(s):  
Crystal Engineering ◽  
Electrostatic Interactions ◽  
Alkyl Chain ◽  
Crystallographic Axis ◽  
Two Dimensional ◽  
Engineering Process ◽  
Solution Interface ◽  
Extensive Program ◽  
Geometric Homology ◽  
Long Alkyl Chain

Recent work on the crystallisation of inorganic crystals under compressed monomolecular surfactant films has shown that two dimensional templates can be used to promote the oriented nucleation of solids. When a suitable long alkyl chain surfactant is cast on the crystallisation media a monodispersied population of crystals forms exclusively at the monolayer/solution interface. Each crystal is aligned with a specific crystallographic axis perpendicular to the plane of the monolayer suggesting that nucleation is facilitated by recognition events between the nascent inorganic solid and the organic template.For example, monolayers of the long alkyl chain surfactant, stearic acid will promote the oriented nucleation of the calcium carbonate polymorph, calcite, on the (100) face, whereas compressed monolayers of n-eicosyl sulphate will induce calcite nucleation on the (001) face, (Figure 1 & 2). An extensive program of research has confirmed the general principle that molecular recognition events at the interface (including electrostatic interactions, geometric homology, stereochemical complementarity) can be used to promote the crystal engineering process.

New tin (IV) fluoride complex with blue-shifted aggregation induced emission

2020 ◽  
Author(s):  
Wooseok Ki ◽  
Kathleen Ngo ◽  
Boris Averkiev ◽  
Phalguni Ghosh ◽  
GorDan T. Reeves ◽  
...  
Keyword(s):  
Aggregation Induced Emission ◽  
Fluoride Complex

Dispersibility Evaluation of Graphene Oxides with Alkyl Chain Groups by Using Optical Transparency

2015 ◽  
Vol E98.C (2) ◽  
pp. 127-128 ◽  
Author(s):  
Asami OHTAKE ◽  
Seiko UCHINO ◽  
Kunio AKEDO ◽  
Masanao ERA ◽  
Koichi SAKAGUCHI
Keyword(s):  
Alkyl Chain ◽  
Optical Transparency ◽  
Graphene Oxides
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