✦ LIBER ✦

Optical Properties of Poly(Para-Phenylenes) under High Pressure

✍ Scribed by S. Guha; W. Graupner; S. Yang; M. Chandrasekhar; H. R. Chandrasekhar; G. Leising

Publisher: John Wiley and Sons
Year: 1999
Tongue: English
Weight: 262 KB
Volume: 211
Category: Article
ISSN: 0370-1972
DOI: 10.1002/(sici)1521-3951(199901)211:1<177::aid-pssb177>3.0.co;2-k

No coin nor oath required. For personal study only.

✦ Synopsis

We present optical studies using photoluminescence, absorption and Raman scattering on samples from two generic families, the polycrystalline para-phenylene oligomers and the amorphous paraphenylene polymers, under hydrostatic pressure. These studies have provided insight into the geometry of the molecules, and the fundamental properties of the ground and excited states of these materials. Using our measurements under pressure and a simple model we extract atmospheric pressure values for the shift in the configuration coordinate between ground and excited states and the ratio of force constants describing the potential wells that describe these states.

📜 SIMILAR VOLUMES

Optical Properties of Ga2Se3 under High

Optical Properties of Ga2Se3 under High Pressure

✍ M. Takumi; T. Ueda; Y. Koshio; H. Nishimura; K. Nagata 📂 Article 📅 2001 🏛 John Wiley and Sons 🌐 English ⚖ 107 KB 👁 2 views

The optical absorption spectrum of b-Ga 2 Se 3 has been measured at pressures up to 7 GPa using a diamond anvil cell. The exciton absorption is observed in the optical absorption spectrum at ambient pressure. With increasing pressure, the exciton line shifts to the higher energy region. From the shi

Optical Study of MnO under High Pressure

✍ Y. Mita; Y. Sakai; D. Izaki; M. Kobayashi; S. Endo; S. Mochizuki 📂 Article 📅 2001 🏛 John Wiley and Sons 🌐 English ⚖ 193 KB 👁 1 views

Optical-limiting property of cyclic phen

Optical-limiting property of cyclic phenylacetylene oligomer synthesized under high pressure

✍ Yoshitsugu Kojima; Takaaki Matsuoka; Hideroh Takahashi 📂 Article 📅 1996 🏛 John Wiley and Sons 🌐 English ⚖ 425 KB 👁 2 views

The optical-limiting property of a new cyclic phenylacetylene oligomer was investigated. Toluene solutions of the oligomer contained within a quartz cell were irradiated with the pulse from frequency doubled Nd : Yag laser a t 532 nm. At low input fluence, the transmittance of the toluene solution w

Study of Electronic and Optical Properti

Study of Electronic and Optical Properties of Fullerene Nanotube under High Pressure

✍ Yu.I. Prilutski; S. S. Durov; A. V. Nazarenko 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 105 KB 👁 1 views

Synthesis of an Optically Active Poly(pa

Synthesis of an Optically Active Poly(para-phenylene) Ladder Polymer

✍ Dr. Rainer Fiesel; Dr. Joachim Huber; Dr. Ullrich Scherf 📂 Article 📅 1996 🏛 John Wiley and Sons 🌐 English ⚖ 382 KB

## COMMUNICATIONS (595 nm, there is no exciton splitting), is 105, much higher than the value of around 3 shown by the simpler metal Schiff base complexes studied previously.[26b, 2 9 \* 301

Mechanical properties of polyethylene mi

Mechanical properties of polyethylene mixtures crystallized under high pressure

✍ Chitoshi Nakafuku; Keiko Nishimura 📂 Article 📅 2003 🏛 John Wiley and Sons 🌐 English ⚖ 123 KB