Phthalocyanine-based hybrid materials for chemosensing

In the present review, we show how the chemical variability of phthalocyanines allowed to synthesize a broad range of hybrid materials. The combination of phthalocyanines or related derivatives with polymers or carbonaceous materials led to efficient chemical sensors. It is shown how the incorporation of macrocyclic molecules in hybrid materials highly modifies the structural and morphological characteristics of the materials. Rugosity, specific surface and porosity being key parameters in the analyte-sensing material interactions, these modifications highly improve the performance of chemical sensors. This is the reason why they are particularly promising materials for the development of new chemical sensors, associated with electrochemical, conductometric or optical transducers.

Download Full-text

Lanthanide macrocyclic complexes: from molecules to materials and from materials to devices

Journal of Porphyrins and Phthalocyanines ◽

10.1142/s1088424613300048 ◽

2013 ◽

Vol 17 (08n09) ◽

pp. 628-635 ◽

Cited By ~ 28

Author(s):

Marcel Bouvet ◽

Pierre Gaudillat ◽

Jean-Moïse Suisse

Keyword(s):

Chemical Sensors ◽

Driving Force ◽

Electronic Devices ◽

Macrocyclic Complexes ◽

High Conductivity ◽

Present Review ◽

Wide Range ◽

Optical Transducers ◽

Molecular Semiconductors ◽

Very High

In the present review, we show how the chemistry of lanthanide macrocyclic complexes, which began almost 50 years ago in Russia, is still very active. Additionally to bisphthalocyanines complexes, triple-decker, but also quadruple- and quintuple-decker complexes have been synthesized via new chemical routes. The driving force for the development of this chemistry arises from the wide range of possible applications. Owing to their very high conductivity, compared to that of monophthalocyanines, LnPc2 and Ln2Pc3 complexes are used as molecular semiconductors in electronic devices. The radical nature of LnPc2 complexes makes them easily oxidized and reduced. This is the reason why they are particularly promising materials for the development of new chemical sensors, associated with both conductimetric and optical transducers.

Download Full-text

Inorganic-organic Hybrid materials from Layered Double Hydroxide structure and their subsequent carbonaceous repliqua

MRS Proceedings ◽

10.1557/proc-847-ee7.4 ◽

2004 ◽

Vol 847 ◽

Author(s):

Fabrice Leroux ◽

El Mostafa Moujahid ◽

Claudia Roland-Swanson ◽

Laetitia Vieille ◽

Christine Taviot-Guého ◽

...

Keyword(s):

Specific Surface ◽

Layered Double Hydroxide ◽

Hybrid Materials ◽

Acidic Medium ◽

Textural Properties ◽

Carbonaceous Materials ◽

Organic Hybrid ◽

Bet Method ◽

Initial Preparation ◽

Double Hydroxide

ABSTRACTInterleaved monomers and polymers between the sheets of layered double hydroxide (LDH) (hydrotalcite-type) materials are considered as carbonaceous source. After a charring process constituted of a carbonisation and a subsequent demineralisation, carbonaceous materials of interesting textural properties were obtained. The initial preparation of the polymer LDH hybrid phase was found to strongly orientate the textural characteristics, microporous volume and creation of mesoporosity. Several methods to assess the microporosity, t-plot, αs and Dubinin-Astakhov, are compared. Specific surface area as high as 2300 m2/g measured by BET method and microporous volume of 1.07 mL/g were obtained. The carbonaceous materials tested as supercapacitor in acidic medium present capacitances in the range 60 - 120 F/g associated to a good behavior in cycling.

Download Full-text

Hydrogel-clay Nanocomposites as Carriers for Controlled Release

Current Medicinal Chemistry ◽

10.2174/0929867325666180831151055 ◽

2020 ◽

Vol 27 (6) ◽

pp. 919-954 ◽

Cited By ~ 4

Author(s):

Raluca Ianchis ◽

Claudia Mihaela Ninciuleanu ◽

Ioana Catalina Gifu ◽

Elvira Alexandrescu ◽

Cristina Lavinia Nistor ◽

...

Keyword(s):

Drug Delivery ◽

Controlled Release ◽

Hybrid Materials ◽

Pharmaceutical Formulations ◽

Tree Of Life ◽

Present Review ◽

Clay Nanocomposites ◽

Delivery Platform ◽

Complex Hybrid

The present review aims to summarize the research efforts undertaken in the last few years in the development and testing of hydrogel-clay nanocomposites proposed as carriers for controlled release of diverse drugs. Their advantages, disadvantages and different compositions of polymers/biopolymers with diverse types of clays, as well as their interactions are discussed. Illustrative examples of studies regarding hydrogel-clay nanocomposites are detailed in order to underline the progressive researches on hydrogel-clay-drug pharmaceutical formulations able to respond to a series of demands for the most diverse applications. Brief descriptions of the different techniques used for the characterization of the obtained complex hybrid materials such as: swelling, TGA, DSC, FTIR, XRD, mechanical, SEM, TEM and biology tests, are also included. Enlightened by the presented data, we can suppose that hydrogel-clay nanocomposites will still be a challenging subject of global assiduous researches. We can dare to dream to an efficient drug delivery platform for the treatment of multiple affection concomitantly, these being undoubtedly like ”a tree of life” bearing different kinds of fruits and leaves proper for human healing.

Download Full-text

Chemical sensors based on nano-sized lanthanide-grafted periodic mesoporous organosilica hybrid materials

Journal of Materials Chemistry C ◽

10.1039/c9tc01328h ◽

2019 ◽

Vol 7 (26) ◽

pp. 8109-8119 ◽

Cited By ~ 8

Author(s):

Anna M. Kaczmarek ◽

Pascal Van Der Voort

Keyword(s):

Hybrid Materials ◽

Chemical Sensors ◽

Aprotic Solvent ◽

Periodic Mesoporous Organosilica ◽

Ion Sensing ◽

Mesoporous Organosilica

Nano-sized PMOs grafted with lanthanides show selective ion sensing for Pb2+ and Cr3+ and strong solvatochromism allowing their use as protic and aprotic solvent sensors.

Download Full-text

Titanium terephthalate (TT-1) hybrid materials with high specific surface area

Journal of Materials Chemistry ◽

10.1039/b601043a ◽

2006 ◽

Vol 16 (24) ◽

pp. 2354-2357 ◽

Cited By ~ 19

Author(s):

Michal Sabo ◽

Winfried Böhlmann ◽

Stefan Kaskel

Keyword(s):

Specific Surface ◽

Surface Area ◽

Specific Surface Area ◽

Hybrid Materials ◽

High Specific Surface Area

Download Full-text

Advances in Chirality Sensing with Macrocyclic Molecules

Chemosensors ◽

10.3390/chemosensors9100279 ◽

2021 ◽

Vol 9 (10) ◽

pp. 279

Author(s):

Xiaotong Liang ◽

Wenting Liang ◽

Pengyue Jin ◽

Hongtao Wang ◽

Wanhua Wu ◽

...

Keyword(s):

High Throughput ◽

Absolute Configuration ◽

Chemical Sensors ◽

Organic Molecules ◽

Macrocyclic Compounds ◽

Rapid Progress ◽

Molecular Chirality ◽

Supramolecular Chirality ◽

Signal Output ◽

Macrocyclic Molecules

The construction of chemical sensors that can distinguish molecular chirality has attracted increasing attention in recent years due to the significance of chiral organic molecules and the importance of detecting their absolute configuration and chiroptical purity. The supramolecular chirality sensing strategy has shown promising potential due to its advantages of high throughput, sensitivity, and fast chirality detection. This review focuses on chirality sensors based on macrocyclic compounds. Macrocyclic chirality sensors usually have inherent complexing ability towards certain chiral guests, which combined with the signal output components, could offer many unique advantages/properties compared to traditional chiral sensors. Chirality sensing based on macrocyclic sensors has shown rapid progress in recent years. This review summarizes recent advances in chirality sensing based on both achiral and chiral macrocyclic compounds, especially newly emerged macrocyclic molecules.

Download Full-text