Enhancing the intermolecular singlet fission efficiency by controlling the self-assembly of amphipathic tetracene derivatives in aqueous solution

2019 ◽  
Vol 7 (36) ◽  
pp. 11090-11098 ◽  
Author(s):  
Zhaofeng Tang ◽  
Sainan Zhou ◽  
Xiangyang Wang ◽  
Heyuan Liu ◽  
Xinyu Yan ◽  
...  

Introduction of the carboxyl group onto tetracene can change the singlet fission mechanism and increase the singlet fission yield in its nanoparticles.

Molecules ◽  
2021 ◽  
Vol 26 (12) ◽  
pp. 3598
Author(s):  
Nirmal K. Shee ◽  
Hee-Joon Kim

A series of porphyrin triads (1–6), based on the reaction of trans-dihydroxo-[5,15-bis(3-pyridyl)-10,20-bis(phenyl)porphyrinato]tin(IV) (SnP) with six different phenoxy Zn(II)-porphyrins (ZnLn), was synthesized. The cooperative metal–ligand coordination of 3-pyridyl nitrogens in the SnP with the phenoxy Zn(II)-porphyrins, followed by the self-assembly process, leads to the formation of nanostructures. The red-shifts and remarkable broadening of the absorption bands in the UV–vis spectra for the triads in CHCl3 indicate that nanoaggregates may be produced in the self-assembly process of these triads. The emission intensities of the triads were also significantly reduced due to the aggregation. Microscopic analyses of the nanostructures of the triads reveal differences due to the different substituents on the axial Zn(II)-porphyrin moieties. All these nanomaterials exhibited efficient photocatalytic performances in the degradation of rhodamine B (RhB) dye under visible light irradiation, and the degradation efficiencies of RhB in aqueous solution were observed to be 72~95% within 4 h. In addition, the efficiency of the catalyst was not impaired, showing excellent recyclability even after being applied for the degradation of RhB in up to five cycles.


Nanoscale ◽  
2021 ◽  
Vol 13 (1) ◽  
pp. 388-396
Author(s):  
Indra Memdi Khoris ◽  
Akhilesh Babu Ganganboina ◽  
Tetsuro Suzuki ◽  
Enoch Y. Park

Inspired by the self-assembly approach, in this work, the chromogen, 3,3′,5,5′-tetramethylbenzidine (TMB), was successfully co-precipitated in aqueous solution to form collective nanoparticles (NPs) of signal molecules (TMB-NPs).


ChemistryOpen ◽  
2017 ◽  
Vol 6 (2) ◽  
pp. 266-272 ◽  
Author(s):  
Jurgen Schill ◽  
Lech-Gustav Milroy ◽  
Jody A. M. Lugger ◽  
Albertus P. H. J. Schenning ◽  
Luc Brunsveld

2012 ◽  
Vol 41 (37) ◽  
pp. 11361 ◽  
Author(s):  
Zhong-Ling Lang ◽  
Wei Guan ◽  
Li-Kai Yan ◽  
Shi-Zheng Wen ◽  
Zhong-Min Su ◽  
...  

2008 ◽  
Vol 20 (8) ◽  
pp. 761-763 ◽  
Author(s):  
Lin Yang ◽  
Feng Ye ◽  
Ruimin Xing ◽  
Baofang Zhang ◽  
Qiushi Ren

Soft Matter ◽  
2015 ◽  
Vol 11 (4) ◽  
pp. 680-691 ◽  
Author(s):  
Anna Akinshina ◽  
Martin Walker ◽  
Mark R. Wilson ◽  
Gordon J. T. Tiddy ◽  
Andrew J. Masters ◽  
...  

Molecular dynamics simulations of non-ionic triphenylene-based chromonic liquid crystal molecules demonstrate self-assembly of the molecules into stacks and “quasi-isodesmic” aggregation behaviour.


1996 ◽  
Vol 432 ◽  
Author(s):  
San Yu ◽  
Shihai Kan ◽  
Guangtian Zou ◽  
Xiaogang Peng ◽  
Dongmei Li ◽  
...  

AbstractMonodisperse hematite cubes about 30nm in size have been prepared by aging a refluxing acidified aqueous solution of FeCl3 in an open vessel. The as grown nano cubes were determined to be single crystalline hematite in perfect cubic shapes using transmission electron microscope and electron diffraction. The nano cube is one of the equilibrium shapes of hematite, which is resumed to be formed by preferential growth in certain crystallographic directions through the species diffusion in the aqueous solutions.Some self-assembly prototypes have been observed, such as the short range ordered buildup consisting of several brick-like hematite nano cubes and the nano box consisted of square plates of hematite nanocrystals. The drive force for the formation of the above assemblies is assumed to be the unique magnetic feature of the single crystalline hematite nano cubes.The perfect shape and the self-assembly feature give a possibility to fabricate bulk ceramics orderly assembled using hematite nano cubes.


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