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Host-Guest Chemistry Within Cellulose Nanocrystal Gel Receptors
- Source :
- Angewandte Chemie (International ed. in English). 59(12)
- Publication Year :
- 2019
-
Abstract
- Cellulose nanocrystals (CNCs) spontaneously assemble into gels when mixed with a polyionic organic or inorganic salt. Here, we have used this ion-induced gelation strategy to create functional CNC gels with a rigid tetracationic macrocycle, cyclobis(paraquat-p-phenylene) (CBPQT4+ ). Addition of [CBPQT]Cl4 to CNCs causes gelation and embeds an active host inside the material. The fabricated CNC gels can reversibly absorb guest molecules from solution then undergo molecular recognition processes that create colorful host-guest complexes. These materials have been implemented in gel chromatography (for guest exchange and separation), and as elements to encode 2- and 3-dimensional patterns. We anticipate that this concept might be extended to design a set of responsive and selective gel-like materials functioning as, for instance, water-pollutant scavengers, substrates for chiral separations, or molecular flasks.
- Subjects :
- chemistry.chemical_classification
010405 organic chemistry
Supramolecular chemistry
Salt (chemistry)
General Chemistry
010402 general chemistry
01 natural sciences
Catalysis
0104 chemical sciences
Gel permeation chromatography
chemistry.chemical_compound
Molecular recognition
chemistry
Chemical engineering
Nanocrystal
Molecule
Cellulose
Host–guest chemistry
Subjects
Details
- ISSN :
- 15213773
- Volume :
- 59
- Issue :
- 12
- Database :
- OpenAIRE
- Journal :
- Angewandte Chemie (International ed. in English)
- Accession number :
- edsair.doi.dedup.....cfca10ffa16ed56b3618ea47588876f4