Categories

Home page > Publications

Publications

Publications and Communications listed are related to TOPBIO’s research and authored by TOPBIO members.

4 July 2013

Redox Multiphoton Polymerization for 3D Nanofabrication

Abstract: We report for the first time on the redox multiphoton polymerization of an organic−inorganic composite material, in which one of the components, a vanadium metallo-organic complex, initiates the polymerization. The composite employs multiphoton absorption to self-generate radicals by photoinduced...

Read more

4 July 2013

Pre-osteoblastic cell response on three-dimensional, organic-inorganic hybrid material scaffolds for bone tissue engineering

Abstract: Engineering artificial scaffolds that enhance cell adhesion and growth in three dimensions is essential to successful bone tissue engineering. However, the fabrication of three-dimensional (3D) tissue scaffolds exhibiting complex micro- and nano-features still remains a challenge. Few materials can be...

Read more

21 March 2013

Dynamics of Intramolecular Excited State Proton Transfer in Emission Tunable, Highly Luminescent Imidazole Derivatives - J Phys. Chem. C, 2013, 117, 791-803

Abstract: The enol-keto excited state dynamics of a series of emission tunable imidazole derivatives undergoing excited state intramolecular proton transfer (ESIPT) has been determined by means of steady state and time resolved spectroscopic techniques in different solvents, at room temperature and at 77 K....

Read more

21 March 2013

Photoinduced electron transfer in an amine-corrole-perylene bisimide assembly: charge separation over terminal components favoured by solvent polarity - Chem. Eur. J. 2012, 18, 14845-14859

Abstract: An assembly consisting of four units: a meso-substituted corrole (C3), perylene bisimide (PI) and two electron-rich triphenylamine (DPA) units has been synthesised. PI is connected through a 1,4-phenylene bridge to C3, whereas the two DPA units are linked to C3 through a diphenyl ether linkage, which was...

Read more

3 September 2012

Singlet-Oxygen-Mediated Cell Death Using Spatially-Localized Two- Photon Excitation of an Extracellular Sensitizer

Abstract: Controlling and quantifying the photosensitized production of singlet oxygen are key aspects in mechanistic studies of oxygendependent photoinitiated cell death. In this regard, the commonly accepted practice of using intracellular photosensitizers is, unfortunately, plagued by problems that include the...

Read more

3 September 2012

Bright, emission tunable fluorescent dyes based on imidazole and p-expanded imidazole†

Received: 16th June 2012, Accepted 10th August 2012 Abstract: A diverse set of imidazole- and p-expanded imidazole derivatives displaying excited state intramolecular proton transfer (ESIPT) was designed and synthesized. The effect of structural variation on photophysical properties was studied in detail for nine...

Read more

12 June 2012

Single-pulse multiphoton fabrication of high aspect ratio structures with sub-micron features using vortex beams

Received: 30 January 2012 / Accepted: 5 April 2012 Abstract: Single ultra-short pulses from Gaussian and vortex beams have been used for the fabrication of complex micro-structures via multi-photon polymerization. The complexity of the resultant micro-structures stems from the modification of both transverse...

Read more

12 June 2012

Graphene-doped photo-patternable ionogels: tuning of conductivity and mechanical stability of 3D microstructures

Received 26th January 2012, Accepted 3rd April 2012 ABSTRACT: This work reports for the first time the development of enhanced-conductivity, graphene-doped photopatternable hybrid organic-inorganic ionogels and the effect of the subsequent materials condensation on the conductivity and mechanical stability of...

Read more

19 March 2012

Improving the Photoinduced Charge Separation Parameters in Corrole– Perylene Carboximide Dyads by Tuning the Redox and Spectroscopic Properties of the Components

ABSTRACT: A couple of corrole–perylene carboximide dyads (C2-PIa and C2- PIx) have been synthesized and their photoreactivity has been evaluated. We aimed at obtaining better performances for photoinduced charge separation, both in terms of efficiency and in terms of lifetime, with respect to formerly studied...

Read more

27 February 2012

Engineering conjugation in para-phenylene-bridged porphyrin tapes

ABSTRACT: We report the synthesis of 7 new para-phenylene-bridged zinc porphyrin dimers, five of which were characterized by single-crystal X-ray analysis. A variety of links were tested for holding the paraphenylene bridges in p-conjugation with the porphyrins, and the natures of these restraining links strongly...

Read more

0 | 10