Lightwave Logic

[mc67]

https://pubs.acs.org/doi/10.1021/acs.accounts.9b00077

Abstract

Conspectus
Materials with large nonlinear optical (NLO) response have the ability to manipulate the frequency and phase of incident light and exhibit phenomena that form the basis of modern telecommunication systems.

In molecule-based materials, the second- and third-order NLO performance is related to the hyperpolarizability (ß) and second hyperpolarizability (?) of the constituent molecules.

The search for higher ß materials is driven by the desire to keep pace with expanding demand for high speed data transmission, while discovery of high ? chromophores is crucial for the development of emergent photonic technologies reliant on manipulation of “light-with-light”.

For decades, it was believed that for highest performance, organic NLO materials must be composed of planar p-system chromophores, and much exploratory research focused on subtle molecular modifications, which generally yielded incremental increases in µß, where µ is the molecular dipole moment.

The surprising recent discovery that twisted p-system chromophores can exhibit dramatically higher ß values than their planar analogues has revealed a new design paradigm and stimulated the development of high performance twisted intramolecular charge transfer (TICT) chromophores, which are composed of electron-donating and electron-accepting p-substituents joined by a sterically constrained twisted biaryl fragment.

In such chromophores, the twisting of the p-system enforces charge separation in the electronic ground state, leading to large dipole moments and low-lying charge-transfer excitations.

This unique electronic structure forms the basis for enhanced NLO response, with an archetypal TICT chromophore, TMC-2, exhibiting very large second- (µß = 24?000 × 10–48 esu) and third-order (? = 1.4 × 10–33 esu) metrics in dilute low-polarity solutions.

This Account summarizes several approaches to enhance µß in various environments, including (1) manipulating the biaryl torsional angle, (2) modifying the electron accepting fragment, (3) extending conjugation, (4) adding multiple twisted fragments, (5) modifying chromophore side chains, and (6) tuning the chromophore environment.

Another set of modifications is explored to enhance ?, including (1) coupling to a cyanine dye to hybridize the cyanine and TICT orbitals, (2) manipulating the donor and acceptor group identity.

The extensive modifications described above yield a detailed understanding of TICT chromophore molecular NLO response and unambiguous evidence that such chromophores have the potential to revolutionize organic electro-optics.

[inversor86]

Steve, would you like to try to move everyone here? Maybe with a mass private message during ihub happy hour?

[mc67]

..said while working for Intel he was in charge of investing in smaller companies.. so he knows the deal.. I also saw a taken aback reaction when the guy asked about smaller companies getting funded,, etc and that may have been the same reaction people saw at the shareholder meeting that they took as a negative.. but from what I got is that his reaction was whoa big question and so open-ended with many possible outcomes.. let me collect myself to answer this.. that's what I saw.. not an inability to answer the question like a few assumed. 14:50

..this interview lets us know he absolutely knows about the financial aspect of LWLG .. an angle some a very worried about.. or use to instill fear..

[mc67]

A clear vision of the future data center in 2020 http://bit.ly/2IoSGfz via @datacentertt


4 Insights on the future of data centers - Dataconomy http://dataconomy.com/2017/10/4-insights-future-data-centers/ via @DataconomyMedia

[pineyhill]

Post meeting, nice to see increased volume.

[pineyhill]

Cautiously excited is how I'd describe the presentation today.

[SteveSchiets]

Sorry pineyhill, haven't thought about him in a long time. I guess the man is enjoying his pension?

[pineyhill]

Steve, to the best of your knowledge whatever did happen to Terry Turpin?

[SteveSchiets]

Im going to sit here and pretent the other board doesnt exist. ??

[SteveSchiets]

Thx pineyhill, hope so too. It's such a drag over there.

[pineyhill]

Alright Steve, Lightwave powered by the speed of light!! Nice I agree let's have fun and ignore the "nattering nabobs of negativity".

[SteveSchiets]

Greetings longterm Lightwavians. I created a new board hoping we can have a little bit of fun again. Let's not talk about the PPS on a day to day basis. Good luck