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Volumn 1, Issue 1-2, 2006, Pages 176-187

Mono- and di(dimethylamino)styryl-substituted borondipyrromethene and borondiindomethene dyes with intense near-infrared fluorescence

Author keywords

Borondipyrromethene; Dyes; Fluorescence; Indicators; Protonation

Indexed keywords


EID: 33748715174     PISSN: 18614728     EISSN: 1861471X     Source Type: Journal    
DOI: 10.1002/asia.200600042     Document Type: Article
Times cited : (146)

References (82)
  • 17
    • 33748711160 scopus 로고    scopus 로고
    • BDP labels are commercially available under their trademark name, bodipy, from Molecular Probes, http://probes.invitrogen.com/.
  • 29
    • 27544515494 scopus 로고    scopus 로고
    • Angew. Chem. Int. Ed. 2005, 44, 6943-6947;
    • (2005) Angew. Chem. Int. Ed. , vol.44 , pp. 6943-6947
  • 38
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    • Angew. Chem. Int. Ed. 2005, 44, 1677-1679.
    • (2005) Angew. Chem. Int. Ed. , vol.44 , pp. 1677-1679
  • 48
    • 84941384717 scopus 로고
    • O = Onsager cavity radius: E. Lippert, Z. Naturforsch. 1955, 10a, 541-545;
    • (1955) Z. Naturforsch. , vol.10 A , pp. 541-545
    • Lippert, E.1
  • 51
    • 33748705274 scopus 로고    scopus 로고
    • note
    • The dipole moments of 1-4 in the ground state were determined as 4.5, 4.3, 2.7, and 3.6 D for the optimized ground-state geometry by semiempirical AMI calculations.
  • 57
    • 33748708127 scopus 로고    scopus 로고
    • note
    • This assumption is considered to be valid, because excited-state processes such as photoisomerization or intersystem crossing do not play a prominent role in BDP and BDI photophysics.
  • 58
    • 33748699271 scopus 로고    scopus 로고
    • note
    • P(red)= -1620 mV for 2.
  • 59
    • 33748695656 scopus 로고    scopus 로고
    • note
    • 2 to MeCN/MeOH is thus not yet understood.
  • 64
    • 33748700745 scopus 로고    scopus 로고
    • note
    • 2+; see also references [20,33].
  • 66
    • 33748698573 scopus 로고    scopus 로고
    • note
    • To assess the generality of the effect of protonation, spectrophotometric and steady-state fluorometric pH titrations were also performed for 3. The neat dye displays a broad band with an absorption maximum at 743 nm in water, and the species in which both potential ICT donor sites are protonated (pH≈0) absorbs with a characteristically narrow, cyanine-like band at 645 nm. However, most probably due to the influence of the 8-hydroxyquinoline moiety under strongly acidic conditions, the typical mirror-image-shaped emission with a maximum at 657 nm is only rather weak. (The peculiarities of 8-hydroxyquinoline as a substituent in the meso position are discussed in a separate section below.) Nonetheless, we anticipate that an analogue of 3 with a phenyl group or, for instance, a benzocrown in the meso position should show similar proton-induced "light-up" features as 4 does.
  • 68
    • 33748685553 scopus 로고    scopus 로고
    • note
    • s values of both dimethylamino groups are apparently too similar in organic and mixed aqueous solutions to be unequivocally distinguished from one another, and the first protonation of 1 in such solvents or mixtures occurs statistically at both sites.
  • 69
    • 33748686116 scopus 로고    scopus 로고
    • note
    • Owing to the precipitation of this species, quantitative analyses of the changes in the aniline absorption band in the 5.5> pH >2.5 range did not yield very reliable results for the more basic pK values.
  • 73
    • 33748692159 scopus 로고    scopus 로고
    • note
    • max ≈ 495 nm) is strongly quenched owing to efficient energy transfer to the BDP. As 2 and 3 are also only weakly fluorescent in highly polar (protic) solvents, the yield of BDP emission upon excitation at 370 nm is also considerably low, and such molecules do not qualify as FRET (fluorescence resonant energy transfer) probes.
  • 75
    • 0004052880 scopus 로고    scopus 로고
    • (2000). Bruker AXS Inc., Madison, Wisconsin, USA
    • Bruker (2000). Smart, Saint, Sadabs and Shelxtl. Bruker AXS Inc., Madison, Wisconsin, USA, 2000.
    • (2000) Smart, Saint, Sadabs and Shelxtl


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.