Preparation of dicholesteryl-derivatives: The effect of spatial configuration upon gelation

Yan, Ni; Zhang, Helan; Xu, Zhiyan; Fang, Yu

doi:10.1007/s11434-012-5449-8

Cited by 3 publications

(2 citation statements)

References 52 publications

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“…46 For a given gelator, various networked structures could be obtained when different gelation solvents were used. [46][47][48][49][50][51] Fig. 6 and 7 show some typical porosity networks formed within some molecular gels.…”

Section: Sa-3d Fluorescent Sensing Filmsmentioning

confidence: 97%

Recent advances in fluorescent film sensing from the perspective of both molecular design and film engineering

Miao

Peng

Fang

2016

Mol. Syst. Des. Eng.

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Fluorescence is now a dominant technology and is used extensively in many fields owing to its incomparable properties. On account of its advantages, scientists and engineers have been investigating novel and powerful fluorescent sensors and sensor arrays for real-life applications, in which the construction of highperformance fluorescent films plays a prominent role. The appropriate immobilization of suitable fluorescent sensing elements onto a given substrate is an efficient way to construct usable fluorescent films. Molecular design and film fabrication are two key issues in the development of films because they determine the sensing performance of the films. Via the careful design and selection of sensing fluorophores, the development of convenient film fabrication strategies and the study of the relevant sensing dynamics, a variety of fluorescent sensing films with desirable sensing performance have been developed over at least the last ten years. This review describes recent progress in this important area of science, which combines surface and interface chemistry, photophysics and materials science.High-performance sensing films are the key to real-life usable fluorescent sensors. Different strategies have been developed to fabricate fluorescent sensing films during the previous decades, which mainly include physical coating, doping, single-layer chemistry and molecular gel-based fabrication. The asdeveloped films can be divided into disordered and generally densely packed physical films, 2-dimensional chemical films and 3-dimensional networked physical films. To enhance sensing performance, the structures of films should be optimized both at a molecular level and on a microscopic scale. Therefore, more factors are involved in the design of sensing molecules; in particular, some functional structures need to be introduced to obtain films with favorable adlayer structures. A molecular gel strategy possesses advantages in the fabrication of fluorescent sensing films: 1) increased surface density and effectiveness of sensing sites; 2) increased speed and reversibility of response; and 3) ease of scale-up. However, this strategy is still open to improvement. For example, a general method is urgently needed to increase the adhesive and mechanical strength of gel-based films. Films that were fabricated using the newly developed strategy have found important applications in the sensitive and fast detection of hidden explosives and illegal drugs.

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Section: Sa-3d Fluorescent Sensing Filmsmentioning

confidence: 97%

Recent advances in fluorescent film sensing from the perspective of both molecular design and film engineering

Miao

Peng

Fang

2016

Mol. Syst. Des. Eng.

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“…Meanwhile, it is noted that stretching vibration of OH in NBDCOOH showed obvious shift (from 3303 to 3416 cm −1 ) when NBDCOOH molecules were immobilized onto the surfaces of the porous particles, indicating interaction between them. [34]…”

Section: Characterization Of Porous Particlesmentioning

confidence: 99%

Porous Particle‐Based Inkjet Printing of Flexible Fluorescent Films: Enhanced Sensing Performance and Advanced Encryption

Liu

Shang

et al. 2019

Adv Materials Technologies

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Innovative design and fabrication of fluorescent films are key steps in the development of film‐based fluorescent sensors, where both sensing unit and substrate are crucial to the performance of the films. To improve sensing performance via increasing mass transfer, hierarchical porous particles are chosen as substrate. NBDCOOH is adopted as a representative sensing fluorophore, and is immobilized onto the particles via physical adsorption. Dispersing the fluorescent particles into a mixture of ethanol and glycerol results in a fluorescent ink. It is demonstrated that the fluorescence of the film obtained from this particle‐based ink is more than 45 times stronger than that from pure NBDCOOH solution. In addition, the particle‐based film shows much improved photochemical stability and enhanced sensing performance. Owing to its printability, it can be used to generate complex patterns, which can be used for advanced information encryption.

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Amino acid appended cholic acid–azobenzene dyad: an effective & smart phase selective gelator for aromatic solvents

et al. 2016

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Preparation of dicholesteryl-derivatives: The effect of spatial configuration upon gelation

Cited by 3 publications

References 52 publications

Recent advances in fluorescent film sensing from the perspective of both molecular design and film engineering

Recent advances in fluorescent film sensing from the perspective of both molecular design and film engineering

Porous Particle‐Based Inkjet Printing of Flexible Fluorescent Films: Enhanced Sensing Performance and Advanced Encryption

Amino acid appended cholic acid–azobenzene dyad: an effective & smart phase selective gelator for aromatic solvents

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