Bond Alternation in Halogen Substituted Polyacetylene: Possibility of C-F Bond Length Alternation in (CF)x

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Breakdown of the first hyperpolarizability/bond-length alternation parameter relationship.

We have investigated the dependence of the static first hyperpolarizability on the bond-length alternation (BLA) parameter. Our analysis indicates that the validity of the first hyperpolarizability/BLA parameter relationship is restricted to the no-field, vacuum, limit, while it successively breaks down along with increasing polarity of a surrounding medium, becoming invalid, for instance, in a...

متن کامل

Antiferromagnetic Spin Chain with Bond Alternation

i(1 − (−1)δ)Si · Si+1 by the density matrix renormalization group method recently proposed by Steven R. White (Phys. Rev. Lett. 69 (1993) 3844). We find a massless point at δc = 0.25 ± 0.01. We also find the edge states in the region δ < δc under the open boundary condition, which disappear in the region δ > δc. At the massless point, the spin wave velocity vs is 3.66 ± 0.10 and the central cha...

متن کامل

Bond alternation, polarizability, and resonance detuning in methine dyes.

We derive structure-property relationships for methine ("Brooker") dyes relating the color of the dye and its symmetric parents to its bond alternation in the ground state and also to the dipole properties associated with its low-lying charge-resonance (or charge-transfer) transition. We calibrate and test these relationships on an array of different protonation states of the green fluorescent ...

متن کامل

Primary Role of the Chromophore Bond Length Alternation in Reversible Photoconversion of Red Fluorescence Proteins

Rapid photobleaching of fluorescent proteins can limit their use in imaging applications. The underlying kinetics is multi-exponential and strongly depends on the local chromophore environment. The first, reversible, step may be attributed to a rotation around one of the two exocyclic C-C bonds bridging phenol and imidazolinone groups in the chromophore. However it is not clear how the protein ...

متن کامل

Magnetic properties of spin-1 antiferromagnetic chains with bond alternation

Magnetic properties of spin-1 antiferromagnetic chains with bond alternation Masayuki Hagiwara,∗1,∗2,∗3 Yasuo Narumi,∗3 Koichi Kindo,∗3 Masanori Kohno,∗4 Hiroki Nakano,∗5 Ryutaro Sato,∗6 and Minoru Takahashi∗7 ∗1Magnetic Materials Laboratory, RIKEN ∗2Faculty of Integrated Science, Yokohama City University ∗3Research Center for Materials Science at Extreme Conditions, Osaka University ∗4Mitsubis...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Progress of Theoretical Physics

سال: 1985

ISSN: 0033-068X,1347-4081

DOI: 10.1143/ptp.74.195