Solvent effects on the photochromic reactions of diarylethene derivatives

Irie, Masahiro; Sayo, Koichi

doi:10.1021/j100198a035

Cited by 199 publications

(184 citation statements)

References 3 publications

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“…For the typical structure (R 1 =R 2 =CH 3 ), we notice that the theoretical λ max (551 nm) correctly produces Irie's reference of 551 nm (in hexane) [25]. For R 1 =R 2 = CN, CH 3 , OCH 3 series, the trend is similar to the bathochromic effect experimentally observed [30].…”

Section: Substitution Effects On the Reactive Carbon Atomssupporting

confidence: 70%

“…Maleic anhydride DA derivatives ( Figure 1) have initially been synthesized by Irie's group [7,25,26]. In these works, absorption spectra (λ max values) of closed and open DA containing X 1,2 = Se, S, N-Me are reported, with some inconsistencies for the λ max of the open form.…”

Section: Resultsmentioning

confidence: 99%

“…In these works, absorption spectra (λ max values) of closed and open DA containing X 1,2 = Se, S, N-Me are reported, with some inconsistencies for the λ max of the open form. For instance, for the X 1,2 = S structure, the reference data maximum UV/visible wavelength may be attributed to the first (405 nm) [7] or to the second (331 nm) [25] dipole allowed transition. Direct comparisons might therefore be difficult as the selected experimental reference is not always clearly identified.…”

Section: Resultsmentioning

confidence: 99%

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Substitution effects on the optical spectra of diarylethene photochroms:ab initioinsights

Laurent¹,

Assfeld²,

Perpète³

et al. 2010

Molecular Simulation

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Section: Substitution Effects On the Reactive Carbon Atomssupporting

confidence: 70%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Substitution effects on the optical spectra of diarylethene photochroms:ab initioinsights

Laurent¹,

Assfeld²,

Perpète³

et al. 2010

Molecular Simulation

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“…Further measurements with shorter laser pulses are required for a more precise determination of the ring-closing time constant. We do not exclude that in solvents with different polarity CF5-TSC might display different time of cyclization reaction [15,35].…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, the cyclization reaction dynamics, which involves the process of π -π molecular orbitals (MO) redistribution within the photochromic core, may have quite different time scale. Moreover, such reaction may be sensitive to the pump wavelength [18] and solvent polarity [15,35].…”

Section: Resultsmentioning

confidence: 99%

Picosecond cyclization reaction dynamics of furan-based diarylethene with thiosemicarbazone side-chain groups

Khodko

Khomenko

Mamuta

et al. 2016

Molecular Crystals and Liquid Crystals

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Picosecond cyclization reaction dynamics of furan-based photochromic diarylethenes with thiosemicarbazone side-chains were studied by femtosecond transient absorption spectroscopy. The monitored ring-closing reaction in the time range of 0+1100 ps is characterized by two main stages. First stage proceeds during the first 1.1 ps and is associated mainly with redistribution of rr -rr molecular orbitals of excited open-ring molecules which consequently leads to the formation of excited closed-ring molecules. During the next 300 ps, a long-term relaxation via vibrational cooling of closed-ring form occurs. The obtained relaxation dynamics curve was fitted by an exponential decay function with 68 ps time constant.

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Information Storage Materials, Optical

Kämpf¹,

Mergel²

2000

Kirk-Othmer Encyclopedia of Chemical Technology

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In addition to the established magnetic mass storage media (floppy disk, hard disk, tape) optical mass storage media (CD‐ROM (compact disk‐read only memory), WORM (write once, read many times), EOD (erasable optical disk)) are increasingly used. Generally, magnetic and optical media do not compete, but complement each other due to their specific advantages. Progress in optical data storage technology is closely connected with the development of suitable materials. This article illustrates in detail the current state of the art and the ongoing development of materials for optical data storage. For the information layer of WORM disks, dyes with high ir absorption, low heat conductivity, and good solubility are required. Besides polymethine dyes, biaxially substituted silicon–naphthalocyanines are used; also combinations of metal complexes are employed. The magneto‐optical materials for EOD‐disks in MOR (magneto‐optical recording) technique are primarily ferrimagnetic ternary amorphous alloys of rare‐earth (RE) and transition‐metals (TM) (GdTbFe, TbFeCo, DyFeCo). Ferrites with spinel‐ or garnet‐structure, eg, rare‐earth iron‐garnets (RIG), are commercially unimportant mainly due to their high deposition temperature. Co/Pt‐multilayers (MLs) exhibit interesting properties, but are still waiting for commercial introduction. Research concentrates on exchange‐coupled RE‐TM layers, which permit a direct overwrite procedure. Phase‐change materials for EOD‐disks in PCR (phase‐change recording) technique are primarily ternary alloys (eg, GeSbTe, InSbTe). Research focuses on materials with fast crystallization in parallel with high stability even at numerous write/read/erase cycles. As substrate materials for CD‐ROM disks, end group‐modified bisphenol A–polycarbonate (BPA‐PC) is employed exclusively. For WORM and EOD disks mainly BPA‐PC and sometimes glass is applied.

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Solvent effects on the photochromic reactions of diarylethene derivatives

Cited by 199 publications

References 3 publications

Substitution effects on the optical spectra of diarylethene photochroms:ab initioinsights

Substitution effects on the optical spectra of diarylethene photochroms:ab initioinsights

Picosecond cyclization reaction dynamics of furan-based diarylethene with thiosemicarbazone side-chain groups

Information Storage Materials, Optical

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