Porphyrins and phthalocyanines have outstanding chemical and thermal stability. The
macrocyclic structure and chemical reactivity of tetrapyrroles offers architectural flexibility …

Functional materials displaying large ultrafast third-order optical nonlinearities across a wide
spectral region and broad temporal domain are required for all-optical signal processing …

We present an experimental investigation on the photophysical properties of meso-tetra
(sulfonatophenyl) porphyrin (TPPS4) in its bi-protonated and deprotonated states in water …

The nonlinear optical properties of the polymeric carboxyl phthalocyanine with lanthanum
(LaPPc. COOH), holmium (HoPPc. COOH) and ytterbium (YbPPc. COOH) as centric atom …

The changing of the electronic and vibronic states due to the insertion of Zn (II), Cu (II), Ni (II)
or Co (II) ions in the meso-tetrakis (4-pyridyl) porphyrin ring center is investigated. The …

We present novel results on the free base 5, 10, 15, 20-meso-tetra (pyridyl)-21H, 23H-
porphyrin (H 2 TPyP). This molecule presents complex electronic and vibrational properties …

The present work employs a set of complementary techniques to investigate the influence of
outlying Ru (II) groups on the ground-and excited-state photophysical properties of free …

This work employs the Z-scan technique with 120 fs pulses to investigate the singlet excited
state absorption spectra of tetrapyridyl and tetrasulfonatophenyl porphyrins. We have used a …

The need to detect and monitor biomolecules, especially within cells, has led to the
emerging growth of fluorescent probes. One of the most commonly used labeling techniques …

This work presents a complete investigation on the excited-state absorption of a new
porphyrin derivative, the free-base 5, 10, 15, 20-tetrakis (1, 3-dimethylimidazolium-2-yl) …