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Volumn 63, Issue 21, 1998, Pages 7143-7150

Facile synthesis and nonlinear optical properties of push-pull 5,15 -diphenylporphyrins

Author keywords

[No Author keywords available]

Indexed keywords


EID: 0000599217     PISSN: 00223263     EISSN: None     Source Type: Journal    
DOI: 10.1021/jo971597c     Document Type: Article
Times cited : (108)

References (67)
  • 4
    • 0001368109 scopus 로고
    • and references therein
    • (a) Marder, S. R.; Perry, J. W. Adv. Mater. 1993, 5, 804 and references therein.
    • (1993) Adv. Mater. , vol.5 , pp. 804
    • Marder, S.R.1    Perry, J.W.2
  • 41
    • 0000469504 scopus 로고
    • Dolphin, D., Ed.; Academic Press: New York
    • Fuhrhop, J.-H. In The Porphyrins; Dolphin, D., Ed.; Academic Press: New York, 1978; Vol. 2, p 131.
    • (1978) The Porphyrins , vol.2 , pp. 131
    • Fuhrhop, J.-H.1
  • 54
    • 85034163306 scopus 로고    scopus 로고
    • note
    • Geometry optimizations for 7, 8, 7(Zn), and 8(Zn) were performed with the ESFF molecular mechanics force field, as implemented in the Insightll program (Version 95.0, Biosym/MSI, San Diego CA, 1995). Geometry optimizations for 7(Zn) and 8(Zn) were also performed using the AMI semiempirical method, as implemented in MOPAC [version 6.0, Quantum Chemistry Program Exchange (QCPE # 455), Department of Chemistry, Indiana University, Bloomington, Indiana]. The computed geometries obtained for 7(Zn) and 8(Zn) by both methods display good agreement.
  • 55
    • 85034194786 scopus 로고    scopus 로고
    • note
    • Frequency-dependent molecular hyperpolarizabilities were from the ESFF geometries for 7 and 8 using the ZINDO sum-over-states program (1907 nm, summed over the lowest 145 excited states using single pair excitations from the highest 11 occupied orbitals into the lowest 12 unoccupied orbitals) (ZINDO, version 96.0/4.0.0, Biosym/MSI, San Diego CA, 1996).
  • 56
    • 85034167300 scopus 로고    scopus 로고
    • note
    • Calculations using the ESFF force field readily confirmed that acceptor substituants are twisted out of conjugation with the porphyrin ring in the optimized geometries of 7 and 8. This is in agreement with the molecular structures of 8 and 21 determined by X-ray diffraction analyses.
  • 59
    • 85034189841 scopus 로고    scopus 로고
    • note
    • The computed dipole moments of 7 (9.5 D) vs 8 (8.7 D) reveal that the dicyanoethenyl-substituted compound is more polar than the formyl analogue. Given the fact that the acceptors in both 7 and 8 are twisted out of the plane of the porphyrin ring, the substituent effect on the dipole moment could arise via purely an inductive effect. Only by considering differences in the absorption spectra does one find evidence for a resonance contribution.
  • 67
    • 85034171348 scopus 로고    scopus 로고
    • note
    • The authors have deposited atomic coordinates for 8 and 21 with the Cambridge Crystallographic Data Centre. The coordinates can be obtained, on request, from the Director, Cambridge Crystallographic Data Centre, 12 Union Road, Cambridge, CB2 1EZ, UK.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.