Fluorescent Films Based on Molecular-Gel Networks and Their Sensing Performances

Liu, Ke; Liu, Taihong; Chen, Xiangli; Sun, Xiaohuan; Fang, Yu

doi:10.1021/am4030774

Cited by 38 publications

(32 citation statements)

References 41 publications

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“…S3A †). As is the case with previously reported terthiophene-based fluorophores, 41 the green fluorescence of Ce-1b was strongly quenched when an aromatic nitro compound, such as NB, was added to the Ce-1b solution (Fig. S3B †).…”

Section: Chiroptical Propertiessupporting

confidence: 82%

Chiral fluorescent sensors based on cellulose derivatives bearing terthienyl pendants

et al. 2016

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Chiral fluorescent sensors were designed and synthesized from naturally occurring optically active cellulose, in which a terthienyl moiety was used as a fluorescent signaling unit, and their chiral recognition abilities were investigated on the basis of an enantioselective fluorescence response to aromatic nitro compounds as quenchers. A cellulose phenylcarbamate derivative (Ce-1b) exhibited an apparent enantioselectivity for various types of aromatic nitro compounds containing either central or axial chirality. Considering the fact that a corresponding monosaccharide derivative showed almost no enantioselectivity, the chiral recognition ability of the cellulose-based fluorescence sensor is attributed to its regular higherorder structures, probably a one-handed helical conformation. The resolution ability of Ce-1b as a chiral stationary phase for high-performance liquid chromatography was basically higher than that of the previously reported cellulose tris( phenylcarbamate), revealing that the terthienyl-based pendant provides attractive chiral recognition sites along the helical backbone as well as the fluorescent functionality. † Electronic supplementary information (ESI) available. See

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Section: Chiroptical Propertiessupporting

confidence: 82%

Chiral fluorescent sensors based on cellulose derivatives bearing terthienyl pendants

et al. 2016

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“…121,122 For example, the fluorescence-active compound CholG-3T-Py was dipped onto Chol-Ph-Chol-based moleculargel films to fabricate uniform luminescent films with a rich network of structures. Recently, a lowmolecular-mass gelator with self-assembly properties was introduced for the fabrication of a network thin film by Fang's group.…”

Section: Chao Lumentioning

confidence: 99%

Luminescent films for chemo- and biosensing

et al. 2015

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Luminescent films have received great interest for chemo-/bio-sensing applications due to their distinct advantages over solution-based probes, such as good stability and portability, tunable shape and size, non-invasion, real-time detection, extensive suitability in gas/vapor sensing, and recycling. On the other hand, they can achieve selective and sensitive detection of chemical/biological species using special luminophores with a recognition moiety or the assembly of common luminophores and functional materials. Nowadays, the extensively used assembly techniques include drop-casting/spin-coating, Langmuir-Blodgett (LB), self-assembled monolayers (SAMs), layer-by-layer (LBL), and electrospinning. Therefore, this review summarizes the recent advances in luminescent films with these assembly techniques and their applications in chemo-/bio-sensing. We mainly focused on the discussion of the relationship between the sensing properties of the films and their architecture. Furthermore, we discussed some critical challenges existing in this field and possible solutions that have been or are being developed to overcome these challenges.

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“…52,53 Hamachi et al developed several supramolecular hydrogel hybrid systems for fluorescent sensing of polyanions or polyamines. 52,53 Hamachi et al developed several supramolecular hydrogel hybrid systems for fluorescent sensing of polyanions or polyamines.…”

Section: Sa-3d Fluorescent Sensing Filmsmentioning

confidence: 99%

“…In detail, the combination of derivatives of organic fluorophores such as terthiophene, 58,59 perylenebisimide (PBI), 26,60,61 BPEB, 27,62 nitrobenzoxadiazole (NBD), 25,52,[63][64][65] or pyrene (Py) 47,53,66 together with cholesterol or glucose resulted in a variety of potential low-molecular-mass fluorescent gelators. Specially designed gelators are the basis of the construction of SA-3D fluorescent films via a molecular gel strategy.…”

Section: Sa-3d Fluorescent Sensing Filmsmentioning

confidence: 99%

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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Fluorescent Films Based on Molecular-Gel Networks and Their Sensing Performances

Cited by 38 publications

References 41 publications

Chiral fluorescent sensors based on cellulose derivatives bearing terthienyl pendants

Chiral fluorescent sensors based on cellulose derivatives bearing terthienyl pendants

Luminescent films for chemo- and biosensing

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

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