Introduction of [2]Catenanes into Langmuir Films and Langmuir−Blodgett Multilayers. A Possible Strategy for Molecular Information Storage Materials

Langmuir ◽  
2000 ◽  
Vol 16 (4) ◽  
pp. 1924-1930 ◽  
Author(s):  
Christopher L. Brown ◽  
Ulrich Jonas ◽  
Jon A. Preece ◽  
Helmut Ringsdorf ◽  
Markus Seitz ◽  
...  
Keyword(s):  
Information Storage ◽  
Langmuir Films ◽  
Langmuir Blodgett ◽  
Storage Materials ◽  
Molecular Information

Photo-induced variation of magnetism in coordination polymers with ligand-based electron transfer

2021 ◽  
Author(s):  
Yan-Lei Lu ◽  
Wen-Long Lan ◽  
Wei Shi ◽  
Qionghua Jin ◽  
Peng Cheng
Keyword(s):  
Electron Transfer ◽  
Coordination Polymers ◽  
Optical Memory ◽  
High Density ◽  
Information Storage ◽  
Memory Devices ◽  
Storage Materials ◽  
Potential Applications ◽  
Induced Variation

Photo-induced variation of magnetism from ligand-based electron transfer have been extensively studied because of their potential applications in magneto-optical memory devices, light-responsive switches, and high-density information storage materials. In this...

Protonation-induced rearrangements in Langmuir films and redox properties of Langmuir–Blodgett films of 2-(n-alkyl)fulleropyrrolidines

2002 ◽  
Vol 130 (3) ◽  
pp. 221-227 ◽  
Author(s):  
Krzysztof Noworyta ◽  
Wlodzimierz Kutner ◽  
Gollapalli R Deviprasad ◽  
Francis D’Souza
Keyword(s):  
Redox Properties ◽  
Langmuir Films ◽  
Langmuir Blodgett ◽  
Langmuir Blodgett Films

Study on the life test of optical information storage materials

2021 ◽  
Author(s):  
Guangwei Zhang ◽  
Jihong Zheng ◽  
Zhaoxia Han ◽  
Chunxian Tao
Keyword(s):  
Information Storage ◽  
Optical Information ◽  
Life Test ◽  
Storage Materials ◽  
Optical Information Storage

Synthesis, Spectroscopic Characterization and Thin Film Deposition of Three Novel Amphiphilic Porphyrins

1999 ◽  
Vol 03 (07) ◽  
pp. 569-584 ◽  
Author(s):  
COLIN L. HONEYBOURNE ◽  
KEVIN J. BARRELL
Keyword(s):  
Methyl Esters ◽  
Action Spectrum ◽  
Spectroscopic Characterization ◽  
Thin Film Deposition ◽  
Poor Quality ◽  
Film Deposition ◽  
Langmuir Films ◽  
Langmuir Blodgett ◽  
Lb Film ◽  
Cadmium Stearate

The synthesis of three novel porphyrins (that are models for mesoporphyrin) requires the synthesis of eight new pyrroles, one new alkyl-3-oxohexanoate and two new dipyrromethanes. The new porphyrin free bases have hydrophobic substitution patterns different from that in mesoporphyrin. We are seeking amphilic porphyrins that will form Langmuir–Blodgett (LB) multilayers without recourse to either long-chain alkyl substituents or fatty acid additives. In this way the influence of the conjugated tetrapyrrole unit on the properties of the multilayer films can be maximized. We report multilayer deposition for porphyrins having the following substituents: CH 3, C 2 H 5, n- C 3 H 7, ( CH 2)2 COOMe ; no additives such as stearic acid, cadmium stearate or mesitylene are required, Y-type deposition being exhibited by the simply substituted pure methyl esters. The variations in proton NMR chemical shift with concentration are reported and the action spectrum of an LB film of a porphyrinato- Zn (II) complex is described. Our observations and conclusions are in sharp (and optimistic) contrast with those of H. Chou et al. (J. Phys. Chem. 98, 383 (1994)), who found that in the absence of steric constraints from bulky aliphatic chains the Langmuir films are so rigid that either no multilayers or multilayers of poor quality are given. We obtain good-quality multilayers (60 layers) for porphyrins bearing eight small substituents.

Electrochemical switching of zwitterviologen: A mechanism for molecular information storage

1991 ◽  
Vol 43 (1-2) ◽  
pp. 2853-2858 ◽  
Author(s):  
A Grupp ◽  
W Zweygart ◽  
M Mehring
Keyword(s):  
Information Storage ◽  
Molecular Information

Information storage materials: nanoscale characterisation by three-dimensional atom probe analysis

2004 ◽  
Vol 52 (10) ◽  
pp. 2847-2862 ◽  
Author(s):  
D.J. Larson ◽  
A.K. Petford-Long ◽  
Y.Q Ma ◽  
A. Cerezo
Keyword(s):  
Three Dimensional ◽  
Atom Probe ◽  
Information Storage ◽  
Storage Materials ◽  
Probe Analysis ◽  
Atom Probe Analysis
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