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Volumn 105, Issue 3, 2001, Pages 537-543

Application of time-resolved linear dichroism spectroscopy: Relaxation of excited hexamethylbenzene/1,2,4,5-tetracyanobenzene charge-transfer complexes

Author keywords

[No Author keywords available]

Indexed keywords

ABSORPTION; BENZENE; DIFFUSION; ELECTRON TRANSITIONS; GROUND STATE; RELAXATION PROCESSES; SPECTROSCOPIC ANALYSIS; VECTORS;

EID: 0035134484     PISSN: 10895639     EISSN: None     Source Type: Journal    
DOI: 10.1021/jp002753d     Document Type: Article
Times cited : (15)

References (51)
  • 5
    • 33947459828 scopus 로고
    • (a) Mulliken, R. S. J. Am. Chem. Soc. 1950, 72, 600. (b) Mulliken, R. S. J. Am. Chem. Soc. 1950, 72, 4493. (c) Mulliken, R. S. J. Chem. Phys. 1951, 19, 514.
    • (1950) J. Am. Chem. Soc. , vol.72 , pp. 600
    • Mulliken, R.S.1
  • 40
    • 33645947498 scopus 로고
    • HyperChem is supplied by Hypercube Inc., 1115 NW 4th Street, Gainesville, FL 32601.
    • (1115) , vol.4 , pp. 32601
  • 43
    • 85037313876 scopus 로고    scopus 로고
    • The relaxation time for this complex was measured in acetonitrile, but the toluene/TCNB complex was studied in several solvents, including acetonitrile and DCLE (see ref 8). On the basis of the minor solvent dependence observed in the toluene complex, the HMB/TCNB complex relaxation time in DCLE can be estimated to be ca. 5 ps.
    • , vol.43 , pp. 8
  • 44
    • 85037291293 scopus 로고    scopus 로고
    • note
    • The interconversions between CRIP, SSRIP, and free radical ions require five parameters if the currently accepted model is used (see ref 42). The fact that the decay trace shown in Figure 3 was fit adequately to a single-exponential decay suggests that ion-pair separation is slow relative to back electron transfer. Thus, the rate of ion-pair decay can be equated with the back-electron-transfer rate from the CRIP.
  • 46
    • 85037297301 scopus 로고    scopus 로고
    • note
    • The rotation of HMB simply changes the degree of overlap between the combinations of Orbitals and therefore the identity of the specific Orbitals responsible for the observed absorption. Because this does not change the TMV direction within the molecular frame, it is not important in the context of the current discussion. However, under the assumption that the calculated structure is correct, the band at 425 nm would be due to the transition between the SHOMO and LUMO and the band at 345 nm would be due to the transition between HOMO and SLUMO. The other two possible transitions would not contribute significantly to the observed absorption.
  • 51
    • 85037312075 scopus 로고    scopus 로고
    • note
    • -1) where x, y, and z are the coordinates of the HMB center of mass.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.