Luminescent Behavior of Gels and Sols Comprised of Molecular Gelators

Abstract

We present a brief review of some important conceptual and practical aspects for the design and properties of molecular luminescent gelators and their gels. Topics considered include structural and dynamic aspects of the gels, including factors important to their ability to emit radiation from electronically excited states.

Gel scaffolds and emerging applications in biomedicine

“…3 (a) The properties of amphiphilic photoresponsive gelators for aromatic solvents (4). (b) Photo-controlled supramolecular assembly of azobenzene-based biscalix [4]arenes (5).…”

“…1). [3][4][5] Gel systems can be ne-tuned to incorporate chemically and physiologically active moieties. Furthermore, rational gels are designed at the molecular level and with multi-scale architecture control, resulting in signicantly better characteristics and functional applications.…”

Amino acid containing amphiphilic hydrogelators with antibacterial and antiparasitic activities

“…In recent years, low molecular weight gelators have been increasingly researched due to their interesting properties like self-association in a medium to form an inter-linked network structure for various applications. [1][2][3][4][5][6][7] These gelators can be assembled using various non-covalent interactions including hydrogen bonding, p-p stacking, van der Waals and other interactions to form gels under suitable conditions. 8 The micro-and nano-network structure of hydrogels leads to a highly porous structure, so they can easily entrap numerous water molecules in the gel cavities.…”

Molecular and Aggregate Structural, Thermal, Mechanical and Photophysical Properties of Long-Chain Amide Gelators Containing an α-Diketo Group in the Presence or Absence of a Tertiary Amine Group

“…Aggregation-induced emission enhancement (AIEE) in LMOGs containing a luminogen within their molecular structure is another area of growing interest [13]. Such systems can function, for example, as intermediates in the synthesis of fluorescent films [14], and to construct organic light-emitting devices, chemosensors and biosensors [15].…”

“…LMOG-based gels have been studied extensively for decades in order to understand their bulk structure-property relationships [7] and how they may be used, for example, in the remediation of oil-spills [8,9], for toxic dye removal [10], and as vehicles for delivery of cosmetics [11] and drugs, and to facilitate tissue engineering [12]. Aggregation-induced emission enhancement (AIEE) in LMOGs containing a luminogen within their molecular structure is another area of growing interest [13]. Such systems can function, for example, as intermediates in the synthesis of fluorescent films [14], and to construct organic light-emitting devices, chemosensors and biosensors [15].…”