Chiral Molecular Squares Based on Angular Bipyridines:  Self-Assembly, Characterization, and Photophysical Properties

2004 ◽  
Vol 43 (21) ◽  
pp. 6579-6588 ◽  
Author(s):  
Suk Joong Lee ◽  
Jason S. Kim ◽  
Wenbin Lin
Keyword(s):  
Self Assembly ◽  
Photophysical Properties ◽  
Molecular Squares

Self-assembling behaviour of a modified aromatic amino acid in competitive medium

Soft Matter ◽  
2020 ◽  
Vol 16 (28) ◽  
pp. 6599-6607 ◽  
Author(s):  
Pijush Singh ◽  
Souvik Misra ◽  
Nayim Sepay ◽  
Sanjoy Mondal ◽  
Debes Ray ◽  
...  
Keyword(s):  
Amino Acid ◽  
Self Assembly ◽  
Aromatic Amino Acid ◽  
Photophysical Properties ◽  
Solvent Mixture ◽  
The Self ◽  
Solvent Ratio ◽  
Self Assembling

The self-assembly and photophysical properties of 4-nitrophenylalanine (4NP) are changed with the alteration of solvent and final self-assembly state of 4NP in competitive solvent mixture and are dictated by the solvent ratio.

scholarly journals Luminescent Supramolecular Nano- or Microstructures Formed in Aqueous Media by Amphiphile-Noble Metal Complexes

2020 ◽  
Vol 2020 ◽  
pp. 1-24 ◽  
Author(s):  
Carmen Cretu ◽  
Loredana Maiuolo ◽  
Domenico Lombardo ◽  
Elisabeta I. Szerb ◽  
Pietro Calandra
Keyword(s):  
Noble Metal ◽  
Smart Materials ◽  
Self Assembly ◽  
Noble Metals ◽  
Photophysical Properties ◽  
Aqueous Media ◽  
Molecular Architecture ◽  
Stimuli Responsive ◽  
Panoramic View ◽  
Amphiphilic Molecules

The involvement of metal ions within the self-assembly spontaneously occurring in surfactant-based systems gives additional and interesting features. The electronic states of the metal, together with the bonds that can be established with the organic amphiphilic counterpart, are the factors triggering new photophysical properties. Moreover, the availability of stimuli-responsive supramolecular amphiphile assemblies, able to disassemble in a back-process, provides reversible switching particularly useful in novel approaches and applications giving rise to truly smart materials. In particular, small amphiphiles with an inner distribution, within their molecular architecture, of various polar and apolar functional groups, can give a wide variety of interactions and therefore enriched self-assemblies. If it is joined with the opportune presence and localization of noble metals, whose chemical and photophysical properties are undiscussed, then very interesting materials can be obtained. In this minireview, the basic concepts on self-assembly of small amphiphilic molecules with noble metals are shown with particular reference to the photophysical properties aiming at furnishing to the reader a panoramic view of these exciting problematics. In this respect, the following will be shown: (i) the principles of self-assembly of amphiphiles that involve noble metals, (ii) examples of amphiphiles and amphiphile-noble metal systems as representatives of systems with enhanced photophysical properties, and (iii) final comments and perspectives with some examples of modern applications.

Self-assembly and photophysical properties of lanthanide dinuclear triple-helical complexes

1993 ◽  
Vol 115 (18) ◽  
pp. 8197-8206 ◽  
Author(s):  
Claude Piguet ◽  
Jean Claude G. Buenzli ◽  
Gerald Bernardinelli ◽  
Gerard Hopfgartner ◽  
Alan F. Williams
Keyword(s):  
Self Assembly ◽  
Photophysical Properties

Heterometallic Molecular Squares and Polymers Based On Self-Assembly Reactions of Multiply Bonded Dirhenium Complexes

2004 ◽  
Vol 2004 (2) ◽  
pp. 368-375 ◽  
Author(s):  
Jitendra K. Bera ◽  
John Bacsa ◽  
Bradley W. Smucker ◽  
Kim R. Dunbar
Keyword(s):  
Self Assembly ◽  
Dirhenium Complexes ◽  
Multiply Bonded ◽  
Molecular Squares

scholarly journals Organic Nanoparticles Based on D-A-D Small Molecule: Self-Assembly, Photophysical Properties, and Synergistic Photodynamic/Photothermal Effects

Materials ◽  
2022 ◽  
Vol 15 (2) ◽  
pp. 502
Author(s):  
Liangliang Yue ◽  
Haolan Li ◽  
Qi Sun ◽  
Xiaogang Luo ◽  
Fengshou Wu ◽  
...  
Keyword(s):  
Self Assembly ◽  
Organic Molecule ◽  
High Efficiency ◽  
Photophysical Properties ◽  
Coupling Reaction ◽  
Ros Generation ◽  
Dead Cell ◽  
Minimal Invasiveness ◽  
Sonogashira Coupling Reaction ◽  
Potential Strategy

Cancer is one of the major diseases threatening human health. Traditional cancer treatments have notable side-effects as they can damage the immune system. Recently, phototherapy, as a potential strategy for clinical cancer therapy, has received wide attention due to its minimal invasiveness and high efficiency. Herein, a small organic molecule (PTA) with a D-A-D structure was prepared via a Sonogashira coupling reaction between the electron-withdrawing dibromo-perylenediimide and electron-donating 4-ethynyl-N,N-diphenylaniline. The amphiphilic organic molecule was then transformed into nanoparticles (PTA-NPs) through the self-assembling method. Upon laser irradiation at 635 nm, PTA-NPs displayed a high photothermal conversion efficiency (PCE = 43%) together with efficient reactive oxygen species (ROS) generation. The fluorescence images also indicated the production of ROS in cancer cells with PTA-NPs. In addition, the biocompatibility and photocytotoxicity of PTA-NPs were evaluated by 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay and live/dead cell co-staining test. Therefore, the as-prepared organic nanomaterials were demonstrated as promising nanomaterials for cancer phototherapy in the clinic.

Luminescent transition-metal-containing cyclophanes (“molecular squares”): covalent self-assembly, host-guest studies and preliminary nanoporous materials applications

1998 ◽  
Vol 171 ◽  
pp. 221-243 ◽  
Author(s):  
Robert V. Slone ◽  
Kurt D. Benkstein ◽  
Suzanne Bélanger ◽  
Joseph T. Hupp ◽  
Ilia A. Guzei ◽  
...  
Keyword(s):  
Transition Metal ◽  
Self Assembly ◽  
Nanoporous Materials ◽  
Molecular Squares

Bimodal self-assembly of an amphiphilic gelator into a hydrogel-nanocatalyst and an organogel with different morphologies and photophysical properties

2016 ◽  
Vol 52 (89) ◽  
pp. 13136-13139 ◽  
Author(s):  
Papri Sutar ◽  
Tapas Kumar Maji
Keyword(s):  
Charge Transfer ◽  
Self Assembly ◽  
Knoevenagel Condensation ◽  
Photophysical Properties ◽  
Condensation Reaction ◽  
Knoevenagel Condensation Reaction ◽  
A Charge

Solvent-dependent, bimodal self-assembly of a flexible, amphiphilic LMWG results in a charge-transfer hydrogel and an organogel with different nano-morphologies and the hydrogel is used as a nanocatalyst for Knoevenagel condensation reaction.

scholarly journals Heterometallic BODIPY-Based Molecular Squares Obtained by Self-Assembly: Synthesis and Biological Activities

ACS Omega ◽  
2019 ◽  
Vol 4 (8) ◽  
pp. 13200-13208 ◽  
Author(s):  
Gajendra Gupta ◽  
Yeji You ◽  
Rizky Hadiputra ◽  
Jaehoon Jung ◽  
Dong-Ku Kang ◽  
...  
Keyword(s):  
Self Assembly ◽  
Biological Activities ◽  
Molecular Squares
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