Infrared and Raman spectra of the disordered phase of the anthracene- and perdeuterioanthracene-tetracyanobenzene charge transfer complexes

Umemura, Junzo; Haley, L. V.; Cameron, David G.; Murphy, William F.; Ingold, C.F.; Williams, D. F.

doi:10.1016/0584-8539(81)80001-3

Cited by 12 publications

(8 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When the growth direction of cocrystal is perpendicular to the laser polarization, the collected intensity of the two Raman modes (2244 and 1370 cm −1 ) shows a maximum, while the corresponding anisotropic ratio r 2244 = 5.81 and r 1370 = 1.61 is different, as a result of light–lattice interactions . In contrast, examining the Fourier transform infrared (FTIR) spectroscopy (Figure S8, Supporting Information) result carefully, we find the 3048 cm −1 band (CH str) of TCNB is slightly shifted to 3046 cm −1 , while the 3114 cm −1 band (CH str) is shifted to 3109 cm −1 in NTCs, which is quite similar to a previous report . These changes imply that the D–A interactions might be experimentally determined, encouraging us to further confirm whether the CT exists or not.…”

mentioning

confidence: 92%

Deepening Insights of Charge Transfer and Photophysics in a Novel Donor–Acceptor Cocrystal for Waveguide Couplers and Photonic Logic Computation

Zhu,

Zou

et al. 2016

Advanced Materials

112

121

View full text Add to dashboard Cite

The charge transfer and photophysics in a new light-emitting cocrystal with ribbon-like morphology are revealed in-depth. These cocrystals can serve as an efficient 1D optical waveguide, and the cocrystal waveguide couplers fabricated by a probe-assisted crystal-moving technique exhibit interfacial white emission and can function as basic photonic logic gates, showing potential for future integrated photonics.

show abstract

mentioning

confidence: 92%

Deepening Insights of Charge Transfer and Photophysics in a Novel Donor–Acceptor Cocrystal for Waveguide Couplers and Photonic Logic Computation

Zhu,

Zou

et al. 2016

Advanced Materials

112

121

View full text Add to dashboard Cite

show abstract

“…The principal C–H stretching bands (3047 and 3113 cm –1 ) in free TCNB were downshifted (Figure S4) upon formation of the adduct ( 2 , 3088 and 3024 cm –1 , respectively; 4 , 3098 and 3033 cm –1 , respectively), which is attributed to the formation of close intermolecular contacts [C(sp 2 )–H···N–C(sp 2 )] between TCNB molecules lying parallel on the crystallographic c axis. Similar C–H stretching band shifts can be observed in TCNB complexes with condensed aromatic hydrocarbons. , …”

Section: Resultsmentioning

confidence: 99%

“…Similar C−H stretching band shifts can be observed in TCNB complexes with condensed aromatic hydrocarbons. 39,40 Nuclear Magnetic Resonance (NMR) and Electronic Spectra. Complex 2 exhibits dynamic behavior in solution.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Dual Reactivity of 3a,6a-Diaza-1,4-diphosphapentalene: π-Donor versus n-Donor

et al. 2020

View full text Add to dashboard Cite

Herein, we present the synthesis, single-crystal X-ray structures, and spectroscopic properties for the 1:1 donor−acceptor complexes of 1,2,4,5-tetracyanobenzene (TCNB) with annelated 3a,6a-diaza-1,4-diphosphapentalenes (DDPs) based on cyclohexanone azine (2) and tetralone azine (4). These are the first complexes of an organic π-acceptor with donor phosphorus heterocycles. According to the X-ray study, the DDPs and TCNB molecules are alternately stacked with interplanar distances of 3.335 and 3.404 Å for 2 and 4, respectively, which are suitable for intermolecular π•••π interactions. The bond lengths and angles in the component molecules agree with values for neutral species, and the infrared spectra indicate a very slight degree of ionicity. The estimated HOMO−LUMO gap from the onset of optical absorption (1.40 eV) is in agreement with the band gap estimated from the density functional theory calculations for 2 (1.47 eV). By contrast, in a reaction with the related electron acceptor, tetrachloroterephthalonitrile, the DDPs proved to be donors of lone electron pairs in a nucleophilic aromatic substitution reaction of chlorine atoms demonstrating the duality of their electronic nature.

show abstract

“…The two apparently degenerate modes, namely b 2u and b 3u , in the D 2h space group of TCNB become discriminated in the C 2h space group of a TCNB molecules where two cyano groups in para positions are different from the two others 16,21 . Both vibrations are b u modes, but correspond to elongations towards the H-bonds direction and along the direction of cyano groups not involved in H-bonds, respectively (Fig.…”

Section: Infrared and Raman Spectroscopymentioning

confidence: 99%

Series of charge transfer complexes obtained as crystals in a confined environment

et al. 2021

View full text Add to dashboard Cite

show abstract

Infrared and Raman spectra of the disordered phase of the anthracene- and perdeuterioanthracene-tetracyanobenzene charge transfer complexes

Cited by 12 publications

References 18 publications

Deepening Insights of Charge Transfer and Photophysics in a Novel Donor–Acceptor Cocrystal for Waveguide Couplers and Photonic Logic Computation

Deepening Insights of Charge Transfer and Photophysics in a Novel Donor–Acceptor Cocrystal for Waveguide Couplers and Photonic Logic Computation

Dual Reactivity of 3a,6a-Diaza-1,4-diphosphapentalene: π-Donor versus n-Donor

Series of charge transfer complexes obtained as crystals in a confined environment

Contact Info

Product

Resources

About