Optical properties of free-base tetraphenylporphyrin embedded in fluorinated polyimides and their ethanol and water vapours sensing capabilities

Carturan, S.; Tonezzer, M.; Quaranta, A.; Maggioni, G.; Buffa, M.; Milan, Riccardo

doi:10.1016/j.snb.2008.10.053

Cited by 26 publications

(13 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The PTCDI-C5 molecule has two absorption maxima like in the Soret (B) and Q bands in the literature. [52,61,64,66] The so-called Q-band is comparatively low and occurs in the visible (V) region and at lower photon energies. [84] In the visible region (from 1.59 to 3.26 eV), there are five Figure 2.…”

Section: Resultsmentioning

confidence: 99%

Investigation of the spectral, optical and surface morphology properties of theN,N′-Dipentyl-3,4,9,10-perylenedicarboximide small molecule for optoelectronic applications

Gündüz

2015

Polym. Adv. Technol.

View full text Add to dashboard Cite

Investigation of the spectral, optical and surface morphology properties of the N,N′-Dipentyl-3,4,9,10-perylenedicarboximide small molecule for optoelectronic applications † Bayram Gündüz* The spectral and optical properties of the solutions of the N,N′-Dipentyl-3,4,9,10-perylenedicarboximide (PTCDI-C5) small molecule for different molarities were investigated in detail. The significant spectral parameters such as molar/mass extinction coefficients, absorption coefficient, electric dipole line strength, and oscillator strength of the PTCDI-C5 molecule were calculated. The absorption bands of PTCDI-C5 show vibronic structures with seven peaks at 2.08, 2.35, 2.53, 2.70, 2.86, 3.32, and 3.86 eV, respectively. The electronic spectra of the PTCDI-C5 can be characterized by two basic regions as visible and Soret band. Effects of the molarities on the significant many optical parameters were investigated in detail. The direct and indirect allowed optical band gaps of the PTCDI-C5 decrease with increasing molarity. Then, surface morphology properties were investigated and calculated roughness parameters of the PTCDI-C5 film. Finally, we discussed for optoelectronic applications of these parameters, and this study was compared with the similar and related studies in the literature.

show abstract

Section: Resultsmentioning

confidence: 99%

Investigation of the spectral, optical and surface morphology properties of theN,N′-Dipentyl-3,4,9,10-perylenedicarboximide small molecule for optoelectronic applications

Gündüz

2015

Polym. Adv. Technol.

View full text Add to dashboard Cite

show abstract

“…Compared with the detection in solution phase, solid‐phase optical sensors offer an enhancement in stability, reversibility, and portability. In most solid‐phase sensing designs, a sensing element is embedded in a polymer matrix such as polyvinyl alcohol, polyvinyl chloride (PVC), polyimides, polysilane, and cellulose acetate . Monitoring iron traces in food and water samples is of great interest as high levels of ferric ion may induce various biological disorders and become toxic for organisms.…”

Section: Introductionmentioning

confidence: 99%

Enhancing performance of optical sensor through the introduction of polystyrene and porous structures

Panawong

Pandhumas

Youngme

et al. 2014

J of Applied Polymer Sci

View full text Add to dashboard Cite

Simple and promising approaches for developing high‐performance Fe3+ sensors were proposed. Polyvinyl chloride (PVC) membrane containing pyrene as a fluorescent indicator was prepared via solvent‐cast method. Upon immersion into 1.0 mM Fe3+ solution, the fluorescence emission of the membrane decreased with the ratio of fluorescence intensities before and after (F0/F) immersion of 1.25. The sensitivity enhancement was achieved through the introduction of polystyrene (PS) onto PVC and the introduction of porous structures. Polyvinyl chloride‐graft‐polystyrene copolymers (PVC‐g‐PS) were synthesized via Atom Transfer Radical Polymerization using PVC as macroinitiator. The grafting percentages of PS on PVC calculated from Nuclear Magnetic Resonance Spectroscopy were 17 and 41. The membrane prepared from low molecular weight copolymer showed higher sensing ability than that from PVC with the F0/F value of 1.39. The increase in PS chain length did not significantly affect the fluorescence quenching. A Stern–Volmer quenching relationship was found with Ksv of 3.96 × 102 M−1. The effect of porous structures on fluorescence quenching was studied by introducing Triton X‐100 as a porogen to PVC/pyrene solution. Attenuated total reflection Fourier transform infrared spectroscopy and Scanning Electron Microscopy analyses confirmed a complete removal of Triton X‐100 after 3 days of immersion in water. The porous membrane demonstrated an enhanced sensing performance with the F0/F value of 1.46. PVC‐g‐PS/pyrene membrane exhibited highly sensitive and selective responses toward Fe3+ over Cu2+, Mg2+, Co2+, Zn2+, Ni2+, and Ag+. In addition, a good reversibility after five cycles of quenching and regeneration was obtained. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 41759.

show abstract

“…While electrostatically deposited thin films have demonstrated predictable and selective sensing upon the initial exposure of the sensor to an analyte, electrostatic attractions are easily overcome by exposing films to a suitable solvent, potentially resulting in film dissolution or reduced efficacy over repeated use, and a limited choice of analytes due to solubility concerns. Recently, several reports have focused on generating more structurally robust materials by using non-electrostatic deposition techniques including physical deposition methods [12,13], incorporation of the sensor in a polymeric matrix [14,15] and covalent bonding of monolayers to substrates [16].…”

Section: Introductionmentioning

confidence: 99%

Interfacially polymerized metalloporphyrin thin films for colorimetric sensing of organic vapors

Paske

Earl

O’Donnell

2011

Sensors and Actuators B: Chemical

View full text Add to dashboard Cite

Optical properties of free-base tetraphenylporphyrin embedded in fluorinated polyimides and their ethanol and water vapours sensing capabilities

Cited by 26 publications

References 36 publications

Investigation of the spectral, optical and surface morphology properties of theN,N′-Dipentyl-3,4,9,10-perylenedicarboximide small molecule for optoelectronic applications

Investigation of the spectral, optical and surface morphology properties of theN,N′-Dipentyl-3,4,9,10-perylenedicarboximide small molecule for optoelectronic applications

Enhancing performance of optical sensor through the introduction of polystyrene and porous structures

Interfacially polymerized metalloporphyrin thin films for colorimetric sensing of organic vapors

Contact Info

Product

Resources

About