Zobrazeno 1 - 10
of 99
pro vyhledávání: '"K.R. Cromack"'
Publikováno v:
Chemical Physics Letters. 218:485-491
We have observed quadricyclane and norbornadiene radical cations in different pentasil type zeolites by EPR spectroscopy after 4 K in situ electron beam irradiation of samples in the EPR spectrometer. We report the first evidence for matrix isolation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::790bf71a2babd97493ed1879dd91f0cb
https://doi.org/10.1016/0009-2614(94)00026-3
https://doi.org/10.1016/0009-2614(94)00026-3
Autor:
K.R. Cromack, R. P. McCall, Alan G. MacDiarmid, A. J. Epstein, J. M. Leng, Sanjeev K. Manohar, Y. Sun
Publikováno v:
Physical Review B. 48:15719-15731
observed by pumping into the Peierls gap were found, except the intensity of each of the features in- creased by a factor of 4. The LE features are short lived with a lifetime on the millisecond time scale and have associated short-lived infrared vib
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e2b03bc8f8209ef9838c7dda8f928676
https://doi.org/10.1103/physrevb.48.15719
https://doi.org/10.1103/physrevb.48.15719
Publikováno v:
Synthetic Metals. 55:648-653
High resolution ESR measurements of solutions of pernigraniline base (PNB) form of polyaniline reveal direct evidence of neutral solitons as the origin of unpaired spins. Our ESR spectra show for the first time rich hyperfine structure from which the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::841a6c448c2e913b3033ea4fbc8bce89
https://doi.org/10.1016/0379-6779(93)91006-n
https://doi.org/10.1016/0379-6779(93)91006-n
Autor:
M. E. Jozefowicz, C. Li, J. M. Ginder, K. Kim, J. M. Leng, R. P. McCall, K.R. Cromack, Arthur J. Epstein, G. Du
Publikováno v:
Macromolecules. 24:4157-4161
It is demonstrated that emeraldine base polymer films can be processed to form strong oriented materials by maintaining the polymer under stress while the temperature is raised toward the glass transition temperature. After the orientation process, t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::df7d57942fce785737fbbadbbd664568
https://doi.org/10.1021/ma00014a031
https://doi.org/10.1021/ma00014a031
Publikováno v:
Synthetic Metals. 41:1225-1229
Light induced electron spin resonance (LESR) and photoinduced absorption (PA) are reported for poly(3-methylthiophene) (P3MT). The LESR is composed of a single line at g≅2 whose position, width and intensity are dependent on the exciting photon ene
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0bb59bbafbc43eac67493a3cccdc4263
https://doi.org/10.1016/0379-6779(91)91593-y
https://doi.org/10.1016/0379-6779(91)91593-y
Autor:
E.M. Scherr, A.G. MacDiarmid, S.K. Manohar, J.G. Masters, Y. Sun, X. Tang, M.A. Druy, P.J. Glatkowski, V.B. Cajipe, J.E. Fischer, K.R. Cromack, M.E. Jozefowicz, J.M. Ginder, R.P. McCall, A.J. Epstein
Publikováno v:
Synthetic Metals. 41:735-738
The dependency of the conductivity of polyaniline (emeraldine oxidation state) on its molecular weight has been determined. Uni- and biaxially oriented films and uniaxially oriented fibers of emeraldine base have been studied and the dependency of th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4e778f6bd05d6051ac9a4a0ef4f7574b
https://doi.org/10.1016/0379-6779(91)91173-8
https://doi.org/10.1016/0379-6779(91)91173-8
Publikováno v:
Synthetic Metals. 41:641-644
Light induced electron spin resonance (LESR) is reported for members of the polyaniline family of polymers. The LESR is composed of a single line at g≈2 whose width and intensity are dependent on the time of exposure and temperature. The LESR line
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4a97e68f8a7aa884e1a7d9ff49bf7243
https://doi.org/10.1016/0379-6779(91)91148-4
https://doi.org/10.1016/0379-6779(91)91148-4
Publikováno v:
Synthetic Metals. 62:287-289
A new electron spin resonance solution spectrum for intrinsic paramagnetic defects in pernigraniline base (PNB) is reported. Our previously reported ( Synth. Met. , 55–57 (1993) 648) solution spectra for PNB were found to correspond to a nitroxyl r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9d53f00c77d44d27b2df93e1b6a266e7
https://doi.org/10.1016/0379-6779(94)90219-4
https://doi.org/10.1016/0379-6779(94)90219-4
Autor:
S. Bowes, S.E. Burke, M.A. Jorgenson, V. O'Byrne, K.R. Cromack, J.L. Toner, G. Smits, L.B. Schwartz
Publikováno v:
Cardiovascular Revascularization Medicine. 7:114-115
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7f1d601fbe6883cd293969658afe2454
https://doi.org/10.1016/j.carrev.2006.03.073
https://doi.org/10.1016/j.carrev.2006.03.073
Autor:
J. M. Ginder, Alan G. MacDiarmid, K.R. Cromack, J. M. Leng, Sanjeev K. Manohar, A. J. Epstein, Y. Sun, R. P. McCall, H. J. Ye
Publikováno v:
Physical review letters. 68(8)
We report the first near-steady-state and long time photoinduced- absorption spectroscopies of pernigraniline base, a novel Peierls ground state polymer with multiple order parameters. Two kinds of defects have been observed and distinguished by diff
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7efd42755839c6bef6977e2e933d05fc
https://pubmed.ncbi.nlm.nih.gov/10046101
https://pubmed.ncbi.nlm.nih.gov/10046101