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Volumn 47, Issue 12, 2008, Pages 2283-2286

Product selection through photon flux: Laser-specific lactone synthesis

Author keywords

Lactones; Laser chemistry; Photochemistry; Photon flux; Reaction control

Indexed keywords

CHEMICAL REACTIONS; IRRADIATION; KETONES; LASERS; LIGHT; LIGHT SOURCES; LIGHTING; PHOTONS; SYNTHESIS (CHEMICAL);

EID: 41049087610     PISSN: 14337851     EISSN: None     Source Type: Journal    
DOI: 10.1002/anie.200704816     Document Type: Article
Times cited : (19)

References (71)
  • 20
    • 21244506722 scopus 로고    scopus 로고
    • J.-ya Kohno, F. Mafuné, T. Kondow, Bull. Chem. Soc. Jpn. 2005, 78, 957;
    • g) J.-ya Kohno, F. Mafuné, T. Kondow, Bull. Chem. Soc. Jpn. 2005, 78, 957;
  • 27
    • 53549098284 scopus 로고    scopus 로고
    • The terminology photon flux is interchangable with photon irradiance (IUPAC).
    • The terminology "photon flux" is interchangable with "photon irradiance" (IUPAC).
  • 51
    • 53549086478 scopus 로고    scopus 로고
    • From the direct output of the YAG laser at 266 and 355 nm the diameter of the beam was 0.6-0.8 cm (200-500 mW). The output from the dye laser was typically of smaller diameter, for example, 0.3 cm at 320 and 294 nm (100 mW).
    • From the direct output of the YAG laser at 266 and 355 nm the diameter of the beam was 0.6-0.8 cm (200-500 mW). The output from the dye laser was typically of smaller diameter, for example, 0.3 cm at 320 and 294 nm (100 mW).
  • 52
    • 53549083307 scopus 로고    scopus 로고
    • A Surelite Continuum Nd:YAG laser was used with an output power of 350 mW, approximately 10-ns pulse length, 20 Hz repetition rate.
    • A Surelite Continuum Nd:YAG laser was used with an output power of 350 mW, approximately 10-ns pulse length, 20 Hz repetition rate.
  • 56
    • 53549110576 scopus 로고    scopus 로고
    • -1.
    • -1.
  • 58
    • 53549123647 scopus 로고    scopus 로고
    • Quenching in this case refers to decay of an excited state by processes such as fluorescence, internal conversion, and vibrational relaxation where appropriate. The competing ISC is generally known to be an efficient process with aromatic ketones (reference [1]).
    • Quenching in this case refers to decay of an excited state by processes such as fluorescence, internal conversion, and vibrational relaxation where appropriate. The competing ISC is generally known to be an efficient process with aromatic ketones (reference [1]).
  • 59
    • 53549110321 scopus 로고    scopus 로고
    • Under the conditions of the lamp/isoprene experiments, we were unable to detect any 2. This finding is a consequence of the very low type I quantum yield and the short irradiation times used for product-ratio determinations. However, as one referee suggests, in the presence of a quencher, synthetically useful quantities of type I products may be produced on prolonged irradiation with very high power (excimer) lamps.
    • Under the conditions of the lamp/isoprene experiments, we were unable to detect any 2. This finding is a consequence of the very low type I quantum yield and the short irradiation times used for product-ratio determinations. However, as one referee suggests, in the presence of a quencher, synthetically useful quantities of type I products may be produced on prolonged irradiation with very high power (excimer) lamps.
  • 71
    • 53549084661 scopus 로고    scopus 로고
    • Further spectroscopic and kinetic studies are in progress to try to unravel further the excited states that are involved in the competing pathways for Norrish type I and II photochemistry in these indandiones
    • Further spectroscopic and kinetic studies are in progress to try to unravel further the excited states that are involved in the competing pathways for Norrish type I and II photochemistry in these indandiones.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.